The SAGE-Spec Spitzer Legacy Program: The Life Cycle of Dust and Gas in the Large Magellanic Cloud

The SAGE-Spec Spitzer Legacy program is a spectroscopic follow-up to the SAGE-LMC photometric survey of the Large Magellanic Cloud carried out with the Spitzer Space Telescope. We present an overview of SAGE-Spec and some of its first results. The SAGE-Spec program aims to study the life cycle of gas and dust in the Large Magellanic Cloud and to provide information essential to the classification of the point sources observed in the earlier SAGE-LMC photometric survey. We acquired 224.6 h of observations using the infrared spectrograph and the spectral energy distribution (SED) mode of the Multiband Imaging Photometer for Spitzer. The SAGE-Spec data, along with archival Spitzer spectroscopy of objects in the Large Magellanic Cloud, are reduced and delivered to the community. We discuss the observing strategy, the specific data-reduction pipelines applied, and the dissemination of data products to the scientific community. Initial science results include the first detection of an extragalactic 21 μm feature toward an evolved star and elucidation of the nature of disks around RV Tauri stars in the Large Magellanic Cloud. Toward some young stars, ice features are observed in absorption. We also serendipitously observed a background quasar, at a redshift of z ≈ 0.14, which appears to be hostless.

[1]  D. Welch,et al.  The ongoing pursuit of R Coronae Borealis stars: the ASAS-3 survey strikes again , 2012, 1211.2475.

[2]  A. Zijlstra,et al.  Carbon enrichment of the evolved stars in the Sagittarius dwarf spheroidal , 2012, 1209.2563.

[3]  A. Zijlstra,et al.  On the metallicity dependence of crystalline silicates in oxygen-rich asymptotic giant branch stars and red supergiants , 2012, 1208.4950.

[4]  L. Decin,et al.  Observational evidence for composite grains in an AGB outflow. MgS in the extreme carbon star LL Pegasi , 2012, 1207.1606.

[5]  M. Meixner,et al.  Identifying young stellar objects in nine Large Magellanic Cloud star-forming regions , 2012 .

[6]  S. Srinivasan,et al.  THE MASS-LOSS RETURN FROM EVOLVED STARS TO THE LARGE MAGELLANIC CLOUD. VI. LUMINOSITIES AND MASS-LOSS RATES ON POPULATION SCALES , 2012, 1205.0280.

[7]  Kathryn F. Neugent,et al.  YELLOW AND RED SUPERGIANTS IN THE LARGE MAGELLANIC CLOUD , 2012, 1202.4225.

[8]  S. Bloemen,et al.  The Spitzer spectroscopic survey of S-type stars , 2012, 1202.2290.

[9]  Pavlos Protopapas,et al.  A REFINED QSO SELECTION METHOD USING DIAGNOSTICS TESTS: 663 QSO CANDIDATES IN THE LARGE MAGELLANIC CLOUD , 2011, 1110.5632.

[10]  J. Bernard-Salas,et al.  THE RICH CIRCUMSTELLAR CHEMISTRY OF SMP LMC 11 , 2011, 1111.2533.

[11]  S. Kwok,et al.  Mixed aromatic–aliphatic organic nanoparticles as carriers of unidentified infrared emission features , 2011, Nature.

[12]  Pavlos Protopapas,et al.  A Refined QSO Selection Method Using Diagnostics , 2011, Proceedings of the International Astronomical Union.

[13]  J. Bernard-Salas,et al.  CASSIS: THE CORNELL ATLAS OF SPITZER/INFRARED SPECTROGRAPH SOURCES. II. HIGH-RESOLUTION OBSERVATIONS , 2011, 1108.3507.

[14]  H. Winckel,et al.  Silicate features in Galactic and extragalactic post-AGB discs , 2011, 1108.0796.

[15]  R. Gruendl,et al.  DISCOVERY AND ANALYSIS OF 21 μm FEATURE SOURCES IN THE MAGELLANIC CLOUDS , 2011 .

[16]  M. Sauvage,et al.  Herschel Detects a Massive Dust Reservoir in Supernova 1987A , 2011, Science.

[17]  D. Lambert,et al.  DUST AROUND R CORONAE BOREALIS STARS. I. SPITZER/INFRARED SPECTROGRAPH OBSERVATIONS , 2011, 1107.1185.

[18]  R. Indebetouw,et al.  SURVEYING THE AGENTS OF GALAXY EVOLUTION IN THE TIDALLY STRIPPED, LOW METALLICITY SMALL MAGELLANIC CLOUD (SAGE-SMC). II. COOL EVOLVED STARS , 2011, 1106.5026.

[19]  S. Srinivasan,et al.  The mass-loss return from evolved stars to the Large Magellanic Cloud - V. The GRAMS carbon-star model grid , 2011, 1106.3256.

[20]  M. Wolff,et al.  THE DUST PROPERTIES OF TWO HOT R CORONAE BOREALIS STARS AND A WOLF–RAYET CENTRAL STAR OF A PLANETARY NEBULA: IN SEARCH OF A POSSIBLE LINK , 2011, 1106.0563.

[21]  R. Indebetouw,et al.  The Spitzer discovery of a galaxy with infrared emission solely due to AGN activity , 2011, 1105.2492.

[22]  A. Zijlstra,et al.  Carbon chemistry in Galactic bulge planetary nebulae , 2011, 1102.4581.

[23]  E. Josselin,et al.  The mass-loss rates of red supergiants and the de Jager prescription , 2010, 1010.5369.

[24]  J. Pel,et al.  The High Road to Astronomical Photometric Precision: Differential Photometry , 2011 .

[25]  S. Srinivasan,et al.  THE MASS-LOSS RETURN FROM EVOLVED STARS TO THE LARGE MAGELLANIC CLOUD. IV. CONSTRUCTION AND VALIDATION OF A GRID OF MODELS FOR OXYGEN-RICH AGB STARS, RED SUPERGIANTS, AND EXTREME AGB STARS , 2014, 1407.8452.

[26]  R. Gruendl,et al.  THE EVOLUTION OF MASSIVE YOUNG STELLAR OBJECTS IN THE LARGE MAGELLANIC CLOUD. II. THERMAL PROCESSING OF CIRCUMSTELLAR ICES , 2011 .

[27]  J. Simon,et al.  Ice chemistry in massive young stellar objects: the role of metallicity , 2010, 1011.2786.

[28]  R. Indebetouw,et al.  YOUNG STELLAR OBJECTS IN THE LARGE MAGELLANIC CLOUD STAR-FORMING REGION N206 , 2010 .

[29]  R. Gruendl,et al.  SPITZER VIEW OF YOUNG MASSIVE STARS IN THE LARGE MAGELLANIC CLOUD H ii COMPLEXES. II. N 159 , 2010, 1007.5326.

[30]  R. Indebetouw,et al.  THE MASS-LOSS RETURN FROM EVOLVED STARS TO THE LARGE MAGELLANIC CLOUD. II. DUST PROPERTIES FOR OXYGEN-RICH ASYMPTOTIC GIANT BRANCH STARS , 2010, 1009.2681.

[31]  T. Henning,et al.  SPITZER'S VIEW ON AROMATIC AND ALIPHATIC HYDROCARBON EMISSION IN HERBIG Ae STARS , 2010, 1006.1130.

[32]  M. Fernandes,et al.  Neutral material around the B[e] supergiant star LHA 115-S 65 - An outflowing disk or a detached Keplerian rotating disk? , 2010, 1005.4511.

[33]  J. Bernard-Salas,et al.  RUSTY OLD STARS: A SOURCE OF THE MISSING INTERSTELLAR IRON? , 2010, 1005.3489.

[34]  R. Sahai,et al.  THE DUSTY CIRCUMSTELLAR DISKS OF B[e] SUPERGIANTS IN THE MAGELLANIC CLOUDS , 2010 .

[35]  D. Burrows,et al.  FIVE YEARS OF MID-INFRARED EVOLUTION OF THE REMNANT OF SN 1987A: THE ENCOUNTER BETWEEN THE BLAST WAVE AND THE DUSTY EQUATORIAL RING , 2010, 1004.0928.

[36]  R. Indebetouw,et al.  SPITZER SAGE-SMC INFRARED PHOTOMETRY OF MASSIVE STARS IN THE SMALL MAGELLANIC CLOUD , 2010, 1004.0949.

[37]  Hidehiro Kaneda,et al.  Spectroscopic observations of ices around embedded young stellar objects in the Large Magellanic Cloud with AKARI , 2010, 1004.0049.

[38]  D. Maoz,et al.  On the size distribution of supernova remnants in the Magellanic Clouds , 2010, 1003.3030.

[39]  Munetaka Ueno,et al.  The AKARI/IRC mid-infrared all-sky survey , 2010, 1003.0270.

[40]  R. Indebetouw,et al.  IS DUST FORMING ON THE RED GIANT BRANCH IN 47 Tuc? , 2010, 1002.1348.

[41]  Joana M. Oliveira,et al.  ICE CHEMISTRY IN EMBEDDED YOUNG STELLAR OBJECTS IN THE LARGE MAGELLANIC CLOUD , 2009, 0911.0532.

[42]  R. Indebetouw,et al.  Chemical depletion in the Large Magellanic Cloud: RV Tauri stars and the photospheric feedback from their dusty discs. ? , 2009, 0910.5624.

[43]  Joana M. Oliveira,et al.  A SPITZER SPACE TELESCOPE FAR-INFRARED SPECTRAL ATLAS OF COMPACT SOURCES IN THE MAGELLANIC CLOUDS. I. THE LARGE MAGELLANIC CLOUD , 2009, 0910.3339.

[44]  R. Sahai,et al.  SPITZER IRS SPECTRA OF LUMINOUS 8 μm SOURCES IN THE LARGE MAGELLANIC CLOUD: TESTING COLOR-BASED CLASSIFICATIONS , 2009, 0909.4986.

[45]  M. Groenewegen,et al.  Luminosities and mass-loss rates of SMC and LMC AGB stars and red supergiants , 2009, 0908.3087.

[46]  R. Gruendl,et al.  HIGH- AND INTERMEDIATE-MASS YOUNG STELLAR OBJECTS IN THE LARGE MAGELLANIC CLOUD , 2009, 0908.0347.

[47]  Aigen Li,et al.  ON MAGNESIUM SULFIDE AS THE CARRIER OF THE 30 μm EMISSION FEATURE IN EVOLVED STARS , 2009, 0907.1037.

[48]  B. Skiff,et al.  VizieR Online Data Catalog , 2009 .

[49]  G. Raskin,et al.  Post-AGB stars with hot circumstellar dust: binarity of the low-amplitude pulsators , 2009, 0906.4482.

[50]  R. Grijs,et al.  The low-mass stellar-mass functions of rich, compact clusters in the Large Magellanic Cloud , 2009, 0905.3698.

[51]  Linda J. Smith,et al.  SPITZER SAGE INFRARED PHOTOMETRY OF MASSIVE STARS IN THE LARGE MAGELLANIC CLOUD , 2009, 0905.1328.

[52]  E. Peeters,et al.  UNUSUAL DUST EMISSION FROM PLANETARY NEBULAE IN THE MAGELLANIC CLOUDS , 2009, 0905.1124.

[53]  R. Gruendl,et al.  THE EVOLUTION OF MASSIVE YOUNG STELLAR OBJECTS IN THE LARGE MAGELLANIC CLOUD. I. IDENTIFICATION AND SPECTRAL CLASSIFICATION , 2009, 0904.1825.

[54]  Ireland,et al.  THE SPITZER SURVEY OF INTERSTELLAR CLOUDS IN THE GOULD BELT. II. THE CEPHEUS FLARE OBSERVED WITH IRAC AND MIPS , 2009, 0903.4063.

[55]  K. Olsen,et al.  THE PHYSICAL PROPERTIES OF THE RED SUPERGIANT WOH G64: THE LARGEST STAR KNOWN? , 2009, 0903.2260.

[56]  C. Leitherer,et al.  THE MASS LOSS RETURN FROM EVOLVED STARS TO THE LARGE MAGELLANIC CLOUD: EMPIRICAL RELATIONS FOR EXCESS EMISSION AT 8 AND 24 μm , 2009, 0903.1661.

[57]  M. Barlow,et al.  The global gas and dust budget of the Large Magellanic Cloud: AGB stars and supernovae, and the impact on the ISM evolution , 2009, 0903.1123.

[58]  S. Kwok,et al.  A SPITZER STUDY OF 21 AND 30 μm EMISSION IN SEVERAL GALACTIC CARBON-RICH PROTOPLANETARY NEBULAE , 2009, 0902.0077.

[59]  R. Gruendl,et al.  SPITZER VIEW OF YOUNG MASSIVE STARS IN THE LARGE MAGELLANIC CLOUD H ii COMPLEX N 44 , 2009, 0901.1328.

[60]  T. Verhoelst,et al.  The dust condensation sequence in red supergiant stars , 2009, 0901.1262.

[61]  C. Leitherer,et al.  VARIABLE EVOLVED STARS AND YOUNG STELLAR OBJECTS DISCOVERED IN THE LARGE MAGELLANIC CLOUD USING THE SAGE SURVEY , 2008, 0811.0408.

[62]  A. Speck,et al.  SILICON CARBIDE ABSORPTION FEATURES: DUST FORMATION IN THE OUTFLOWS OF EXTREME CARBON STARS , 2008, 0810.2599.

[63]  A. Dupree,et al.  Giants in the globular cluster ω Centauri: dust production, mass-loss and distance , 2008, 0812.0326.

[64]  University College London,et al.  Discovery of Extreme Carbon Stars in the Large Magellanic Cloud , 2008, 0809.5107.

[65]  H. Winckel,et al.  SPITZER survey of dust grain processing in stable discs around binary post-AGB stars , 2008, 0809.2505.

[66]  S. Shah,et al.  PAH Emission from Herbig Ae/Be Stars , 2008, 0809.2389.

[67]  Suzanne L. Hawley,et al.  THE PROPERTIES OF LONG-PERIOD VARIABLES IN THE LARGE MAGELLANIC CLOUD FROM MACHO , 2008, 0808.1737.

[68]  B. Williams,et al.  Ejecta, Dust, and Synchrotron Radiation in SNR B0540–69.3: A More Crab-Like Remnant than the Crab , 2008, 0807.4155.

[69]  J. Bernard-Salas,et al.  The Magellanic Zoo: Mid-Infrared Spitzer Spectroscopy of Evolved Stars and Circumstellar Dust in the Magellanic Clouds , 2008, 0807.2998.

[70]  A. Ginsburg,et al.  The optically bright post-AGB population of the LMC , 2008, Proceedings of the International Astronomical Union.

[71]  H. Kaneda,et al.  AKARI Near-Infrared Spectroscopy: Detection of H2O and CO2 Ices toward Young Stellar Objects in the Large Magellanic Cloud , 2008, Proceedings of the International Astronomical Union.

[72]  Joana M. Oliveira,et al.  Molecules and dust production in the Magellanic Clouds , 2008, 0806.3557.

[73]  Linda J. Smith,et al.  SPITZER SAGE SURVEY OF THE LARGE MAGELLANIC CLOUD. III. STAR FORMATION AND ∼1000 NEW CANDIDATE YOUNG STELLAR OBJECTS , 2008 .

[74]  Kjell Eriksson,et al.  A grid of MARCS model atmospheres for late-type stars. I. Methods and general properties , 2008, 0805.0554.

[75]  Keiichi Ohnaka,et al.  Spatially resolved dusty torus toward the red supergiant WOH G64 in the Large Magellanic Cloud , 2008, 0803.3823.

[76]  J. Leisenring,et al.  Effects of Metallicity on the Chemical Composition of Carbon Stars , 2008, 0803.3067.

[77]  B. Kumar,et al.  CCD photometric and mass function study of nine young Large Magellanic Cloud star clusters , 2008, 0801.1068.

[78]  C. Leitherer,et al.  SPITZER SAGE OBSERVATIONS OF LARGE MAGELLANIC CLOUD PLANETARY NEBULAE , 2007, 0710.5938.

[79]  J. Bernard-Salas,et al.  Neon and Sulfur Abundances of Planetary Nebulae in the Magellanic Clouds , 2007, 0709.3292.

[80]  N. Langer,et al.  The Supernova Channel of Super-AGB Stars , 2007, 0705.4643.

[81]  M. Egan,et al.  The LMC’s Top 250: Classification of the Most Luminous Compact 8 µm Sources in the Large Magellanic Cloud , 2008 .

[82]  Hiroyuki Mito,et al.  The IRSA 2MASS all-sky point source catalog , 2008 .

[83]  D. Padgett,et al.  The c2d Spitzer Spectroscopic Survey of Ices around Low-Mass Young Stellar Objects. I. H2O and the 5-8 μm Bands , 2007, 0711.4616.

[84]  Ithaca,et al.  Spitzer IRS Spectra and Envelope Models of Class I Protostars in Taurus , 2007, 0711.4038.

[85]  B. Schaefer.  A PROBLEM WITH THE CLUSTERING OF RECENT MEASURES OF THE DISTANCE TO THE LARGE MAGELLANIC CLOUD , 2007, 0709.4531.

[86]  D. A. García-Hernández,et al.  Spitzer Infrared Spectrograph Observations of Magellanic Cloud Planetary Nebulae: The Nature of Dust in Low-Metallicity Circumstellar Ejecta , 2007, 0709.0488.

[87]  D. Kato.  The IRSF Magellanic Clouds Point Source Catalog , 2007 .

[88]  J. Bernard-Salas,et al.  The Unusual Hydrocarbon Emission from the Early Carbon Star HD 100764: The Connection between Aromatics and Aliphatics , 2007, 0705.0905.

[89]  U. Virginia,et al.  SAGE-Spectroscopy: The life cycle of dust and gas in the Large Magellanic Cloud , 2007, 1108.1715.

[90]  M. Egan,et al.  THE LARGE MAGELLANIC CLOUD'S TOP 250: CLASSIFICATION OF THE MOST LUMINOUS COMPACT 8 μm SOURCES IN THE LARGE MAGELLANIC CLOUD , 2007, astro-ph/0703584.

[91]  H. Winckel.  Post-Agb Binaries , 2007, astro-ph/0702245.

[92]  H. Winckel,et al.  First detection of photospheric depletion in the Large Magellanic Cloud , 2007, astro-ph/0701327.

[93]  J. Blommaert,et al.  Spitzer spectroscopy of carbon stars in the Small Magellanic Cloud , 2006, astro-ph/0611071.

[94]  Marsha J. Wolf,et al.  Ages and Metallicities of Extragalactic Globular Clusters from Spectral and Photometric Fits of Stellar Population Synthesis Models , 2006, astro-ph/0610261.

[95]  H. Winckel,et al.  First detection of photospheric depletion in the LMC ⋆ , 2007 .

[96]  J. R. Houck,et al.  The Distribution of Silicate Strength in Spitzer Spectra of AGNs and ULIRGs , 2006, astro-ph/0612509.

[97]  H. Lamers,et al.  The role of non-gray model atmospheres in the evolution of low mass metal poor stars , 2006 .

[98]  C. Kochanek,et al.  The Mid-Infrared Properties of X-Ray Sources , 2006, 0803.0357.

[99]  T. Lebzelter,et al.  Tracing the Development of Dust around Evolved Stars: The Case of 47 Tuc , 2006, astro-ph/0611167.

[100]  J. Leisenring,et al.  The Unusual Spitzer Spectrum of the Carbon Star IRAS 04496–6958: A Different Condensation Sequence in the LMC? , 2006 .

[101]  A. Frank,et al.  A Spitzer Space Telescope Infrared Spectrograph Spectral Atlas of Luminous 8 μm Sources in the Large Magellanic Cloud , 2006 .

[102]  E. Peeters,et al.  The Spitzer IRS spectrum of SMP LMC 11 , 2006, astro-ph/0609299.

[103]  M. Dennefeld,et al.  Planetary nebulae in the Magellanic Clouds , II. Abundances and element production , 2006, astro-ph/0609408.

[104]  A. Zijlstra,et al.  Massive young stellar objects in the Large Magellanic Cloud: water masers and ESO-VLT 3–4 μm spectroscopy , 2006, astro-ph/0609036.

[105]  Paul S. Smith,et al.  9.7 μm Silicate Features in Active Galactic Nuclei: New Insights into Unification Models , 2006, astro-ph/0608645.

[106]  J. Simon,et al.  The Spitzer Survey of the Small Magellanic Cloud: S3MC Imaging and Photometry in the Mid- and Far-Infrared Wave Bands , 2006, astro-ph/0608561.

[107]  L. Stanghellini,et al.  Hubble Space Telescope Images of Magellanic Cloud Planetary Nebulae , 2006, astro-ph/0608300.

[108]  R. Indebetouw,et al.  Interpreting Spectral Energy Distributions from Young Stellar Objects. I. A Grid of 200,000 YSO Model SEDs , 2006, astro-ph/0608234.

[109]  A. Claret,et al.  Chemically peculiar stars in the Large Magellanic Cloud , 2006, astro-ph/0608200.

[110]  C. Leitherer,et al.  Spitzer SAGE Survey of the Large Magellanic Cloud. II. Evolved Stars and Infrared Color-Magnitude Diagrams , 2006, astro-ph/0608189.

[111]  Ithaca,et al.  A Survey and Analysis of Spitzer Infrared Spectrograph Spectra of T Tauri Stars in Taurus , 2006, astro-ph/0608038.

[112]  T. Onaka,et al.  Spitzer Space Telescope Infrared Imaging and Spectroscopy of the Crab Nebula , 2006, astro-ph/0606321.

[113]  L.B.F.M. Waters,et al.  Spitzer observations of acetylene bands in carbon-rich AGB stars in the Large Magellanic Cloud , 2006 .

[114]  Olivier Bienayme,et al.  THE RADIAL VELOCITY EXPERIMENT (RAVE): FIFTH DATA RELEASE , 2013, 1609.03210.

[115]  M. Egan,et al.  Mid-Infrared Spectroscopy of Carbon Stars in the Small Magellanic Cloud , 2006, astro-ph/0603607.

[116]  A. Frank,et al.  Spitzer IRS Spectra of Luminous 8 micron Sources in the Large Magellanic Cloud , 2006, astro-ph/0603443.

[117]  J. Blommaert,et al.  A Spitzer mid-infrared spectral survey of mass-losing carbon stars in the Large Magellanic Cloud , 2006, astro-ph/0602531.

[118]  L. Girardi,et al.  AGB stars in the Magellanic Clouds. III. The rate of star formation across the Small Magellanic Cloud , 2006, astro-ph/0602483.

[119]  M. Skrutskie,et al.  The Two Micron All Sky Survey (2MASS) , 2006 .

[120]  H. Winckel,et al.  Keplerian discs around post-AGB stars: a common phenomenon? , 2006, astro-ph/0601578.

[121]  R. Kirshner,et al.  SN 1987A after 18 Years: Mid-Infrared Gemini and Spitzer Observations of the Remnant , 2006, astro-ph/0601495.

[122]  B. Sargent,et al.  Spitzer Spectroscopy of Dusty Disks around B[e] Hypergiants in the Large Magellanic Cloud , 2006 .

[123]  P. Wood,et al.  Bump Cepheids in the Magellanic Clouds: Metallicities, the Distances to the LMC and SMC, and the Pulsation-Evolution Mass Discrepancy , 2006, astro-ph/0601225.

[124]  Joana M. Oliveira,et al.  The first 8–13 μm spectra of globular cluster red giants: circumstellar silicate dust grains in 47 Tucanae (NGC 104) , 2006, astro-ph/0601074.

[125]  H. J. Habing,et al.  AGB stars in the Magellanic Clouds II. The rate of star formation across the LMC , 2005, astro-ph/0509881.

[126]  Linda J. Smith,et al.  SPITZER SURVEY OF THE LARGE MAGELLANIC CLOUD, SURVEYING THE AGENTS OF A GALAXY'S EVOLUTION (SAGE). IV. DUST PROPERTIES IN THE INTERSTELLAR MEDIUM , 2005, Proceedings of the International Astronomical Union.

[127]  Q. Parker,et al.  A New Population of Planetary Nebulae Discovered in the Large Magellanic Cloud , 2005, 1308.5484.

[128]  J. Blommaert,et al.  ESO–VLT and Spitzer spectroscopy of IRAS 05328−6827: a massive young stellar object in the Large Magellanic Cloud , 2005, astro-ph/0509695.

[129]  M. Egan,et al.  R CrB Candidates in the Small Magellanic Cloud: Observations of Cold, Featureless Dust with the Spitzer Infrared Spectrograph , 2005, astro-ph/0509507.

[130]  F. Herwig.  Evolution of Asymptotic Giant Branch Stars , 2005 .

[131]  A. Zijlstra,et al.  Dust-enshrouded giants in clusters in the Magellanic Clouds , 2005, astro-ph/0507571.

[132]  A. Tielens,et al.  The Detection of Silicate Emission from Quasars at 10 and 18 Microns , 2005, astro-ph/0504423.

[133]  A. Zijlstra,et al.  An Empirical formula for the mass-loss rates of dust-enshrouded red supergiants and oxygen-rich asymptotic giant branch stars , 2005, astro-ph/0504379.

[134]  R. Siebenmorgen,et al.  Discovery of 10 μm silicate emission in quasars : Evidence of the agn unification scheme , 2005, astro-ph/0504263.

[135]  I. Yamamura,et al.  Three-micron spectra of AGB stars and supergiants in nearby galaxies , 2005, astro-ph/0501247.

[136]  Arjun Dey,et al.  Submitted to the Astrophysical Journal Letters Mid-Infrared Selection of Active Galaxies , 2004 .

[137]  S. Hawley,et al.  Long-Period Variables in the Large Magellanic Cloud: Results from MACHO and 2MASS , 2004, astro-ph/0410398.

[138]  Paul S. Smith,et al.  The Multiband Imaging Photometer for Spitzer (MIPS) , 2004 .

[139]  J. R. Houck,et al.  The SMART Data Analysis Package for the Infrared Spectrograph on the Spitzer Space Telescope , 2004, astro-ph/0408295.

[140]  E. Wright,et al.  The Spitzer Space Telescope Mission , 2004, astro-ph/0406223.

[141]  Bram AckeMario E. van den Ancker.  ISO spectroscopy of disks around Herbig Ae/Be stars , , 2004, astro-ph/0406050.

[142]  Gary J. Melnick,et al.  In-flight performance and calibration of the Infrared Array Camera (IRAC) for the Spitzer Space Telescope , 2004, SPIE Astronomical Telescopes + Instrumentation.

[143]  M. Groenewegen.  Long Period Variables in the Magellanic Clouds: OGLE +2 MASS + DENIS , , 2004, astro-ph/0404561.

[144]  A. Zijlstra,et al.  Polycyclic Aromatic Hydrocarbons and Crystalline Silicates in the Bipolar Post-Asymptotic Giant Branch Star IRAS 16279–4757 , 2004 .

[145]  PAHs and crystalline silicates in the post-AGB star IRAS 16279-4757 , 2004, astro-ph/0402037.

[146]  D. Alves,et al.  A review of the distance and structure of the Large Magellanic Cloud , 2003, astro-ph/0310673.

[147]  M. Tamura,et al.  Variable stars in the Magellanic Clouds – II. The data and infrared properties , 2003, astro-ph/0312079.

[148]  Hans Van Winckel,et al.  Post-AGB Stars , 2003 .

[149]  P. Massey,et al.  The Evolution of Massive Stars. I. Red Supergiants in the Magellanic Clouds , 2003, astro-ph/0309272.

[150]  J. Goebel,et al.  Guilt by Association: The 13 Micron Dust Emission Feature and Its Correlation to Other Gas and Dust Features , 2003 .

[151]  M. Kontizas,et al.  OB stellar associations in the Large Magellanic Cloud: Survey of young stellar systems , 2003, astro-ph/0304019.

[152]  M. Cioni,et al.  On the usefulness of finding charts - Or the runaway carbon stars of the Blanco & McCarthy field 37 , 2003, astro-ph/0302385.

[153]  M. Feast,et al.  Obscured asymptotic giant branch variables in the Large Magellanic Cloud and the period–luminosity relation , 2003, astro-ph/0302246.

[154]  A. D. Mackey,et al.  Surface brightness profiles and structural parameters for 53 rich stellar clusters in the Large Magellanic Cloud , 2002, astro-ph/0209031.

[155]  I. Yamamura,et al.  Very Large Telescope Spectra of Carbon Stars in the Large Magellanic Cloud and Their Metallicity Dependence , 2002 .

[156]  E. Peeters,et al.  The Infrared Emission Features in the Spectrum of the Wolf-Rayet star WR 48a , 2002 .

[157]  M. Kessler,et al.  Infrared spectral classification of normal stars , 2002 .

[158]  Edward Bruce Churchwell,et al.  Ultra-Compact HII Regions and Massive Star Formation , 2002 .

[159]  A. Tielens,et al.  The carrier of the ``30'' mu m emission feature in evolved stars. A simple model using magnesium sulfide , 2002, astro-ph/0204330.

[160]  D. Pollacco,et al.  What Are the Hot R Coronae Borealis Stars? , 2002, astro-ph/0203136.

[161]  G. Clayton.  The R Coronae Borealis Connection , 2002 .

[162]  B. Draine,et al.  Do the Infrared Emission Features Need Ultraviolet Excitation? The Polycyclic Aromatic Hydrocarbon Model in UV-poor Reflection Nebulae , 2002, astro-ph/0201060.

[163]  E. Grebel,et al.  The Magellanic Clouds Photomtric Survey: The Small Magellanic Cloud Stellar Catalog and Extinction Map , 2001, astro-ph/0110665.

[164]  P. Massey.  A UBVR CCD Survey of the Magellanic Clouds , 2001, astro-ph/0110531.

[165]  Th. Henning,et al.  Steps toward interstellar silicate mineralogy - VI. Dependence of crystalline olivine IR spectra on iron content and particle shape , 2001 .

[166]  Stephan D. Price,et al.  MSX, 2MASS, and the Large Magellanic Cloud: A Combined Near- and Mid-Infrared View , 2001, astro-ph/0107220.

[167]  M. Kontizas,et al.  A Catalogue of carbon stars in the LMC , 2001 .

[168]  I. Ivans,et al.  Infrared Space Observatory Spectra of R Coronae Borealis Stars. I. Emission Features in the Interval 3-25 Microns , 2001, astro-ph/0103400.

[169]  B. Balick,et al.  Morphology and Evolution of the Large Magellanic Cloud Planetary Nebulae , 2001 .

[170]  A. Tielens,et al.  Crystallinity versus mass-loss rate in asymptotic giant branch stars , 2001, astro-ph/0101256.

[171]  J. Blommaert,et al.  The peculiar cluster HS 327 in the Large Magellanic Cloud: Can OH/IR stars and carbon stars be twins? , 2001, astro-ph/0101107.

[172]  R. Szczerba,et al.  Post-AGB Objects as a Phase of Stellar Evolution , 2001 .

[173]  M. Barlow,et al.  Dust features in the 10-mu m infrared spectra of oxygen-rich evolved stars , 2000 .

[174]  A. Cox,et al.  Allen's astrophysical quantities , 2000 .

[175]  A. Robin,et al.  The DENIS Point Source Catalogue towards the Magellanic Clouds , 2000, astro-ph/0003177.

[176]  M. Weinberg,et al.  Stellar Populations in the Large Magellanic Cloud from 2MASS , 2000, astro-ph/0003012.

[177]  F. Haberl,et al.  ROSAT HRI catalogue of X-ray sources in the LMC region ? , 2000, astro-ph/0002318.

[178]  Will Saunders,et al.  The PSCz catalogue , 1999, astro-ph/9909191.

[179]  John Scott Drilling,et al.  in Allen''''s Astrophysical Quantities , 2000 .

[180]  Patrick Stewart Osmer.  The Cerro Tololo Inter-American Observatory. , 2000 .

[181]  T. Schmidt-Kaler,et al.  Red supergiants in the LMC. IV. Calibration of intrinsic colours and the HRD , 1999 .

[182]  S. Keller.  Infrared Photometry of Red Supergiants in Young Clusters in the Magellanic Clouds , 1999, astro-ph/9905030.

[183]  M. Azzopardi,et al.  The fourth catalogue of Population I Wolf-Rayet stars in the Large Magellanic Cloud ? , 1999 .

[184]  P. Tuthill,et al.  A dusty pinwheel nebula around the massive star WR104 , 1999, Nature.

[185]  M. Barlow,et al.  Silicate and hydrocarbon emission from Galactic M supergiants , 1998 .

[186]  H. Schmitt,et al.  A Revised and Extended Catalog of Magellanic System Clusters, Associations, and Emission Nebulae. II. The Large Magellanic Cloud , 1998, astro-ph/9810266.

[187]  T. Schmidt-Kaler,et al.  Red supergiants in the LMC — II. Spectrophotometry and model atmospheres , 1998 .

[188]  H. Winckel,et al.  An oxygen-rich dust disk surrounding an evolved star in the Red Rectangle , 1998, Nature.

[189]  M. J. Lehner,et al.  The macho project LMC variable star inventory. VII. The discovery of RV Tauri stars and new type II cepheids in the Large Magellanic Cloud , 1998 .

[190]  maarten marx,et al.  A catalogue of compact radio sources in and behind the Large Magellanic Cloud , 1997 .

[191]  A. Zijlstra,et al.  Obscured AGB stars in the Magellanic clouds. I. IRAS Candidates , 1997 .

[192]  C. Alard,et al.  Accurate positions and finding charts of known planetary nebulae in the Large Magellanic Cloud , 1997 .

[193]  G. Sloan,et al.  Sources of the 13 Microns Feature Associated with Oxygen-Rich Circumstellar Dust , 1996 .

[194]  The MACHO project large Magellanic Cloud variable star inventory. IV. New R Coronae Borealis stars , 1996, astro-ph/9604177.

[195]  Geoffrey C. Clayton,et al.  THE R CORONAE BOREALIS STARS , 1996, 1206.3448.

[196]  L. Girardi,et al.  Blue–violet spectral evolution of young Magellanic Cloud clusters , 1995 .

[197]  S. Price,et al.  Silicate Emission at 10 Microns in Variables on the Asymptotic Giant Branch , 1995 .

[198]  V. Smith,et al.  A Survey of Lithium in the Red Giants of the Magellanic Clouds , 1995 .

[199]  M. Feast,et al.  High-mass-loss AGB Stars in the South Galactic Cap , 1994 .

[200]  C. H. Smith,et al.  Circumstellar dust emission in five Large Magellanic Cloud supergiants , 1993 .

[201]  Martin G. Cohen,et al.  Spectral irradiance calibration in the infrared. II - Alpha Tau and the recalibration of the IRAS low resolution spectrometer , 1992 .

[202]  M. Feast,et al.  CH stars in the Large Magellanic Cloud and in our Galaxy , 1992 .

[203]  J. Whiteoak,et al.  OH/IR Stars in the Magellanic Clouds , 1992 .

[204]  C. Engelke.  Analytic approximations to the 2-60 microns infrared continua for standard calibration stars - With application to the calibration of spectroscopy and photometry, and the determination of effective temperature and angular size from IR measurements , 1992 .

[205]  A. I. Boothroyd,et al.  Breakdown of the core mass-luminosity relation at high luminosities on the asymptotic giant branch , 1992 .

[206]  V. Castellani,et al.  The Young Magellanic Cluster NGC 2004 , 1991 .

[207]  M. Dopita,et al.  LMC SMP 64 - The youngest planetary nebula , 1991 .

[208]  C. Leitherer,et al.  Non-LTE analysis of the Ofpe/WN9 star HDE 269227 (R84) , 1991 .

[209]  M. Dopita,et al.  Photoionization modeling of Magellanic Cloud planetary nebulae. I , 1991 .

[210]  V. Blanco,et al.  Identification of 849 cool-carbon LMC stars , 1990 .

[211]  Philippe Veron,et al.  A catalogue of quasars and active nuclei: 12th edition , 1998 .

[212]  S. Kwok,et al.  A 21 micron emission feature in four proto-planetary nebulae , 1989 .

[213]  K. Volk,et al.  New LRS spectra for 356 bright IRAS sources , 1989 .

[214]  A. Walker,et al.  CCD photometry of the Large Magellanic Cloud cluster NGC 1866 - Observational results , 1989 .

[215]  S. Hughes.  Long-period variables in the Large Magellanic Cloud. I. Search and discovery , 1989 .

[216]  F. Hartwick,et al.  The Kinematics of an Old Stellar Population in the Large Magellanic Cloud: The CH Stars , 1988 .

[217]  J. Frantsman.  The evolution of the Magellanic Clouds , 1988 .

[218]  N. Kaifu.  Star forming regions , 1988 .

[219]  C. Beichman,et al.  Infrared astronomical satellite (IRAS) catalogs and atlases. Volume 1: Explanatory supplement , 1988 .

[220]  C. Beichman,et al.  Infrared Astronomical Satellite (IRAS) catalogs and atlases , 1988 .

[221]  C. Rogers,et al.  Carbon Grains in the Envelope of IRC +10216 , 1987 .

[222]  D. Welch.  Spectroscopy and JHK Photometry of Type II Cepheids in the Magellanic Clouds , 1987 .

[223]  M. Peimbert,et al.  Star Forming Regions , 1987 .

[224]  M. Jura.  RV Tauri stars as post-asymptotic giant branch objects , 1986 .

[225]  G. Thomas.  Infrared Astronomical Satellite (IRAS). , 1986 .

[226]  S. H. Moseley,et al.  MgS grain component in circumstellar shells , 1985 .

[227]  R. Humphreys,et al.  M supergiants in the Milky Way and the Magellanic Clouds Colors, spectral types, and luminosities , 1985 .

[228]  D. Morgan,et al.  Planetary Nebulae in the Magellanic Clouds , 1991 .

[229]  I. Iben,et al.  Asymptotic Giant Branch Evolution and Beyond , 1983 .

[230]  M. Bessell,et al.  Long-period variables in the Magellanic Clouds: Supergiants, AGB stars, supernova precursors, planetary nebula precursors, and enrichment of the interstellar medium , 1983 .

[231]  G. Mathews,et al.  A comparison between observed and theoretical H-R diagrams for the young LMC star cluster NGC 1866 , 1983 .

[232]  P. Hodge.  Age calibrations of Magellanic Cloud clusters. , 1983 .

[233]  B. Westerlund.  The Magellanic Clouds , 1997 .

[234]  R. Humphreys.  Studies of luminous stars in nearby galaxies. II. M supergiants in the Large Magellanic Cloud. , 1979 .

[235]  L. Vigroux.  The Magellanic Clouds. , 1979 .

[236]  A. Philip,et al.  THE PLANETARY NEBULA SYSTEMS OF THE MAGELLANIC CLOUDS. , 1978 .

[237]  R. Duinen.  Infrared Astronomical Satellite (IRAS) , 1977 .

[238]  K. M. Merrill,et al.  2 - 14 ΜM STELLAR SPECTROPHOTOMETRY II. STARS FROM THE 2 ΜM INFRARED SKY SURVEY. , 1976 .

[239]  R. Treffers,et al.  High-resolution spectra of cool stars in the 10- and 20-micron regions , 1974 .

[240]  Variable Stars in the Large Magellanic Cloud–II , 1974 .

[241]  P. Hodge,et al.  Further studies of variable stars of the Large Magellanic Cloud. , 1971 .

[242]  N. Woolf.  Circumstellar infrared emission from cool stars. , 1969 .

[243]  Frank J. Low,et al.  Stellar spectra from 2.8 to 14 microns. , 1968 .

[244]  B. Westerlund,et al.  Planetary Nebulae in the Large Magellanic Cloud , 1964 .

[245]  K. Henize.  Catalogues of Hα-emission Stars and Nebulae in the Magellanic Clouds. , 1956 .