MEASUREMENTS OF THE MEAN DIFFUSE GALACTIC LIGHT SPECTRUM IN THE 0.95–1.65 μm BAND FROM CIBER

We report measurements of the diffuse galactic light (DGL) spectrum in the near-infrared, spanning the wavelength range 0.95–1.65 μm by the Cosmic Infrared Background ExpeRiment. Using the low-resolution spectrometer calibrated for absolute spectro-photometry, we acquired long-slit spectral images of the total diffuse sky brightness toward six high-latitude fields spread over four sounding rocket flights. To separate the DGL spectrum from the total sky brightness, we correlated the spectral images with a 100 μm intensity map, which traces the dust column density in optically thin regions. The measured DGL spectrum shows no resolved features and is consistent with other DGL measurements in the optical and at near-infrared wavelengths longer than 1.8 μm. Our result implies that the continuum is consistently reproduced by models of scattered starlight in the Rayleigh scattering regime with a few large grains.

[1]  Y. Sofue,et al.  Three-Dimensional Distribution of the ISM in the Milky Way Galaxy: I. The H I Disk , 2003, astro-ph/0304338.

[2]  Min Gyu Kim,et al.  THE COSMIC INFRARED BACKGROUND EXPERIMENT (CIBER): THE LOW RESOLUTION SPECTROMETER , 2011, 1112.4217.

[3]  B. Draine.  Physics of the Interstellar and Intergalactic Medium , 2011 .

[4]  Timothy D. Brandt,et al.  THE SPECTRUM OF THE DIFFUSE GALACTIC LIGHT: THE MILKY WAY IN SCATTERED LIGHT , 2011, 1109.4175.

[5]  J. Weingartner,et al.  Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC , 2000, astro-ph/0008146.

[6]  K. R. Lykke,et al.  THE COSMIC INFRARED BACKGROUND EXPERIMENT (CIBER): THE NARROW-BAND SPECTROMETER , 2013, 1307.0016.

[7]  L. J. Rose,et al.  Interstellar Grains and the Diffuse Galactic Light , 1966, Nature.

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

[9]  Sophia A. Khan,et al.  DETECTION OF THE COSMIC FAR-INFRARED BACKGROUND IN AKARI DEEP FIELD SOUTH , 2010, 1002.3674.

[10]  Min Gyu Kim,et al.  THE COSMIC INFRARED BACKGROUND EXPERIMENT (CIBER): THE WIDE-FIELD IMAGERS , 2012, 1206.4702.

[11]  S. H. Moseley,et al.  Tracing the first stars with fluctuations of the cosmic infrared background , 2005, Nature.

[12]  P. Mason,et al.  The Cosmic Infrared Background Experiment (CIBER): A Sounding Rocket Payload to Study the near Infrared Extragalactic Background Light , 2013 .

[13]  Gerard Gilmore,et al.  New light on faint stars – III. Galactic structure towards the South Pole and the Galactic thick disc , 1983 .

[14]  G. Bruzual,et al.  Stellar population synthesis at the resolution of 2003 , 2003, astro-ph/0309134.

[15]  Richard G. Arendt,et al.  Interstellar Dust Models Consistent with Extinction, Emission, and Abundance Constraints , 2003, astro-ph/0312641.

[16]  A. Witt,et al.  Extended Red Emission in High Galactic Latitude Interstellar Clouds , 2008, 0802.0674.

[17]  James D. Garnett,et al.  Multiply sampled read-limited and background-limited noise performance , 1993, Defense, Security, and Sensing.

[18]  Woong-Seob Jeong,et al.  BRIGHTNESS AND FLUCTUATION OF THE MID-INFRARED SKY FROM AKARI OBSERVATIONS TOWARD THE NORTH ECLIPTIC POLE , 2012, 1202.4049.

[19]  B. Peterson,et al.  DIFFUSE GALACTIC LIGHT IN THE FIELD OF THE TRANSLUCENT HIGH GALACTIC LATITUDE CLOUD MBM32 , 2013, 1303.0938.

[20]  Puragra Guhathakurta,et al.  Optical characteristics of Galactic 100 micron cirrus , 1989 .

[21]  H. Rix,et al.  An infrared/optical investigation of 100 micron 'cirrus' , 1991 .

[22]  C. Elvey,et al.  A Photoelectric Study of the Light from the Night Sky , 1937 .

[23]  L. C. Henyey,et al.  Diffuse radiation in the Galaxy , 1940 .

[24]  K. Nordsieck,et al.  The Size distribution of interstellar grains , 1977 .

[25]  S. Malhotra,et al.  The Vertical Distribution and Kinematics of H i and Mass Models of the Galactic Disk , 1994, astro-ph/9411088.

[26]  Toshio Matsumoto,et al.  Low-Resolution Spectrum of the Diffuse Galactic Light and 3.3μm PAH Emission with the AKARI InfraRed Camera , 2013, 1307.6736.

[27]  E. Hatziminaoglou,et al.  Star counts in the Galaxy - Simulating from very deep to very shallow photometric surveys with the TRILEGAL code , 2005, astro-ph/0504047.

[28]  Jeonghyun Pyo,et al.  Low-Resolution Spectrum of the Zodiacal Light with the AKARI InfraRed Camera , 2013, 1306.6191.

[29]  J. Weingartner,et al.  Dust Grain-Size Distributions and Extinction in the Milky Way, Large Magellanic Cloud, and Small Magellanic Cloud , 2001 .

[30]  Edward L. Wright.  Angular Power Spectra of the COBE DIRBE Maps , 1998 .

[31]  V. V. Hristov,et al.  OBSERVATIONS OF THE NEAR-INFRARED SPECTRUM OF THE ZODIACAL LIGHT WITH CIBER , 2010, 1004.5445.

[32]  D. Schlegel,et al.  Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds , 1998 .

[33]  D. Schlegel,et al.  Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds , 1997, astro-ph/9710327.

[34]  Soojong Pak,et al.  The cosmic infrared background experiment , 2005, astro-ph/0510587.

[35]  G. B. Field,et al.  PHYSICS OF THE INTERSTELLAR AND INTERGALACTIC MEDIUM. , 1969 .

[36]  S. Oyabu,et al.  COSMIC OPTICAL BACKGROUND: THE VIEW FROM PIONEER 10/11 , 2011, Proceedings of the International Astronomical Union.

[37]  P. Martin,et al.  The Size Distribution of Interstellar Dust Particles as Determined from Polarization: Spheroids , 1995 .

[38]  F. J. Low,et al.  INFRARED CIRRUS - NEW COMPONENTS OF THE EXTENDED INFRARED-EMISSION , 1984 .

[39]  E. L. Wright,et al.  The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background. II. Model of the Interplanetary Dust Cloud , 1997, astro-ph/9806250.