M DWARF CATALOG OF THE LAMOST PILOT SURVEY

We present a spectroscopic catalog of 58,360 M dwarfs from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope pilot survey. For each spectrum in the catalog, spectral subtype, radial velocity, Hα equivalent width, a number of prominent molecular band indices, and the metal-sensitive parameter ζ are provided. We use the Sloan Digital Sky Survey Data Release 7 Spectroscopic M dwarf catalog to verify the precision of our methods of classifying the spectral types and measuring the radial velocities. The magnetic activity properties of M dwarfs are also traced by Hα emission lines. The molecular band indices included in this catalog are sensitive to temperature or metallicity, and can be used for further study of the physical properties of M dwarfs. This M dwarf catalog is available on the Web site http://sciwiki.lamost.org/MCatalogPilot/.

[1]  Calibrating M Dwarf Metallicities Using Molecular Indices , 2005, astro-ph/0510148.

[2]  B. Santiago,et al.  Constraints on thick disc and halo parameters from HST photometry of field stars in the Galaxy , 2001, astro-ph/0102494.

[3]  S. Hawley,et al.  The Palomar/MSU Nearby Star Spectroscopic Survey.II.The Southern M Dwarfs and Investigation of Magnetic Activity , 1996 .

[4]  J. Bochanski,et al.  Spectroscopic Survey of M Dwarfs within 100 Parsecs of the Sun , 2005 .

[5]  K. Abazajian,et al.  THE SEVENTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY , 2008, 0812.0649.

[6]  S. Hawley,et al.  The Palomar/MSU Nearby Star Spectroscopic Survey. III. Chromospheric Activity, M Dwarf Ages, and the Local Star Formation History , 2002, astro-ph/0203499.

[7]  S G Wang,et al.  Special configuration of a very large Schmidt telescope for extensive astronomical spectroscopic observation. , 1996, Applied optics.

[8]  New Neighbors from 2MASS: Activity and Kinematics at the Bottom of the Main Sequence , 2000, astro-ph/0004361.

[9]  M. Bessell,et al.  JHKLM PHOTOMETRY: STANDARD SYSTEMS, PASSBANDS, AND INTRINSIC COLORS , 1988 .

[10]  Suzanne L. Hawley,et al.  The Palomar/MSU Nearby-Star Spectroscopic Survey. I. The Northern M Dwarfs -Bandstrengths and Kinematics , 1995 .

[11]  R. Michael Rich,et al.  ACCEPTED FOR PUBLICATION IN THE ASTROPHYSICAL JOURNAL Preprint typeset using LATEX style emulateapj v. 10/09/06 REVISED METALLICITY CLASSES FOR LOW-MASS STARS: DWARFS (DM), SUBDWARFS (SDM), EXTREME , 2022 .

[12]  Australian National University,et al.  THE SEGUE STELLAR PARAMETER PIPELINE. I. DESCRIPTION AND COMPARISON OF INDIVIDUAL METHODS , 2007, 0710.5645.

[13]  John E. Gizis.  M-subdwarfs: spectroscopic classification and the metallicity scale , 1997 .

[14]  Xavier Bonfils,et al.  A super-Earth transiting a nearby low-mass star , 2009, Nature.

[15]  J. Bochanski,et al.  CONSTRAINING THE AGE–ACTIVITY RELATION FOR COOL STARS: THE SLOAN DIGITAL SKY SURVEY DATA RELEASE 5 LOW-MASS STAR SPECTROSCOPIC SAMPLE , 2007, 0712.1590.

[16]  K. Covey,et al.  Spectroscopic Properties of Cool Stars in the SDSS , 2004 .

[17]  D. Hogg,et al.  FAINT M-DWARFS AND THE STRUCTURE OF THE GALACTIC DISK , 1997, astro-ph/9701193.

[18]  S. Hawley,et al.  χ Values for Blue Emission Lines in M Dwarfs , 2008, 0812.1221.

[19]  Kelle L. Cruz,et al.  A SPECTROSCOPIC CATALOG OF THE BRIGHTEST (J < 9) M DWARFS IN THE NORTHERN SKY, , 2012, 1206.5991.

[20]  P. Bodenheimer,et al.  The End of the Main Sequence , 1997 .

[21]  E. al.,et al.  The Sloan Digital Sky Survey: Technical summary , 2000, astro-ph/0006396.

[22]  Heidi Jo Newberg,et al.  SEGUE: A SPECTROSCOPIC SURVEY OF 240,000 STARS WITH g = 14–20 , 2009, 0902.1781.

[23]  Yong-Heng Zhao,et al.  Design and implementation of the spectra reduction and analysis software for LAMOST Telescope , 2004, SPIE Astronomical Telescopes + Instrumentation.

[24]  Achim Zeileis,et al.  BMC Bioinformatics BioMed Central Methodology article Conditional variable importance for random forests , 2008 .

[25]  Achim Zeileis,et al.  Bias in random forest variable importance measures: Illustrations, sources and a solution , 2007, BMC Bioinformatics.

[26]  Andrew A. West,et al.  Stellar SEDs from 0.3 to 2.5 μm: Tracing the Stellar Locus and Searching for Color Outliers in the SDSS and 2MASS , 2007, 0707.4473.

[27]  A. West,et al.  The M dwarf problem in the Galaxy , 2012, 1202.3078.

[28]  J. Brewer,et al.  PROSPECTING IN LATE-TYPE DWARFS: A CALIBRATION OF INFRARED AND VISIBLE SPECTROSCOPIC METALLICITIES OF LATE K AND M DWARFS SPANNING 1.5 dex , 2012, 1211.4630.

[29]  J. Bochanski,et al.  Exploring the Local Milky Way: M Dwarfs as Tracers of Galactic Populations , 2006, 0708.0044.

[30]  Spectroscopy of New High Proper Motion Stars in the Northern Sky. I. New Nearby Stars, New High-Velocity Stars, and an Enhanced Classification Scheme for M Dwarfs , 2002, astro-ph/0209284.

[31]  Ramón Díaz-Uriarte,et al.  Gene selection and classification of microarray data using random forest , 2006, BMC Bioinformatics.

[32]  S. Hawley,et al.  Chromospheric and coronal activity in low-mass Hyades dwarfs , 1995 .

[33]  J. Bochanski,et al.  MAPPING THE LOCAL HALO: STATISTICAL PARALLAX ANALYSIS OF SDSS LOW-MASS SUBDWARFS , 2012, 1211.6104.

[34]  J. Brinkmann,et al.  Spectroscopic Properties of Cool Stars in the Sloan Digital Sky Survey: An Analysis of Magnetic Activity and a Search for Subdwarfs , 2004, astro-ph/0403486.

[35]  David A. Golimowski,et al.  ERRATUM: “THE LUMINOSITY AND MASS FUNCTIONS OF LOW-MASS STARS IN THE GALACTIC DISK. II. THE FIELD” (2010, AJ, 139, 2679) , 2010, 1004.4002.

[36]  Angela P. Massey,et al.  REFINED METALLICITY INDICES FOR M DWARFS USING THE SLoWPoKES CATALOG OF WIDE, LOW-MASS BINARIES , 2011, 1112.2670.

[37]  M. Raddick,et al.  The Fifth Data Release of the Sloan Digital Sky Survey , 2007, 0707.3380.

[38]  David G. Monet,et al.  Dwarfs Cooler than “M”: The Definition of Spectral Type “L” Using Discoveries from the 2-Micron All-Sky Survey (2MASS) , 1999 .

[39]  I. Reid,et al.  Meeting the Cool Neighbors. III. Spectroscopy of Northern NLTT Stars , 2002, astro-ph/0202461.

[40]  Saurav Dhital,et al.  THE SLOAN DIGITAL SKY SURVEY DATA RELEASE 7 SPECTROSCOPIC M DWARF CATALOG. I. DATA , 2011, 1101.1082.

[41]  E. Martín.  Utrecht Echelle spectroscopy of a flare in VB 8 , 1999 .

[42]  Andrew A. West,et al.  Low-Mass Dwarf Template Spectra from the Sloan Digital Sky Survey , 2006, astro-ph/0610639.

[43]  Leo Breiman,et al.  Random Forests , 2001, Machine Learning.

[44]  David A. Golimowski,et al.  THE LUMINOSITY AND MASS FUNCTIONS OF LOW-MASS STARS IN THE GALACTIC DISK. I. THE CALIBRATION REGION , 2008, 0807.2452.

[45]  Todd J. Henry,et al.  A Standard Stellar Spectral Sequence in the Red/Near-Infrared: Classes K5 to M9 , 1991 .