A Study of External Galaxies Detected by the {ital COBE} Diffuse Infrared Background Experiment

Journal Article · Mon Jun 01 00:00:00 EDT 1998 · Astrophysical Journal

DOI:https://doi.org/10.1086/305737· OSTI ID:665564

Odenwald, S ^[1]; Newmark, J ^[2]; Smoot, G ^[3]

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1. Raytheon STX, Code 630.0, Goddard SFC, Greenbelt, MD 20771 (United States)
2. Applied Research Corporation, Landover, MD 20785 (United States)
3. Lawrence Berkeley Laboratory, University of California, Berkeley, CA 94720 (United States)

A comparison of the {ital COBE} Diffuse Infrared Background Experiment (DIRBE) all-sky survey with the locations of known galaxies in the {ital IRAS} Catalog of Extragalactic Objects and the Center for Astrophysics Catalog of Galaxies led to the detection of as many as 57 galaxies. In this paper, we present the photometric data for these galaxies and an analysis of the seven galaxies that were detected at {lambda} {gt} 100 {mu}m. Estimates of the ratio of the mass of the cold dust (CD) component detected at {ital T}{sub {ital d}} = 20{endash}30 K to a very cold dust (VCD) component with {ital T}{sub {ital d}} {approx} 10{endash}15 K suggest that between 2{percent}{endash}100{percent} of the cirrus-like CD mass can also exist in many of these galaxies as VCD. In one galaxy, M33, the DIRBE photometry at 240 {mu}m suggests as much as 26 times as much VCD may be present as compared to the cirrus-like component. Further submillimeter measurements of this galaxy are required to verify such a large population of VCD. We also present 10 galaxies that were detected in the sky region not previously surveyed by {ital IRAS} and that can be used to construct a flux-limited all-sky catalog of galaxies brighter than 1000 Jy with a modest completeness limit of about 65{percent}. {copyright} {ital {copyright} 1998.} {ital The American Astronomical Society}

• OSTI ID: 665564
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 500; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BACKGROUND RADIATION
COSMIC DUST
COSMOLOGY
FAR INFRARED RADIATION
GALAXIES
PHOTOMETRY
TEMPERATURE MEASUREMENT