J/ApJ/500/554 COBE DIRBE IR photometry (Odenwald+ 1998)
A study of external galaxies detected by the COBE
diffuse infrared background experiment.
Odenwald S., Newmark J., Smoot G.
<Astrophys. J. 500, 554 (1998)>
=1998ApJ...500..554O 1998ApJ...500..554O
ADC_Keywords: Galaxies, IR ; Photometry, infrared
Mission_Name: COBE
Keywords: diffuse radiation - dust, extinction - galaxies: ISM -
galaxies: photometry - infrared: galaxies - surveys
Abstract:
A comparison of the COBE Diffuse Infrared Background Experiment
(DIRBE) all-sky survey with the locations of known galaxies in the
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
λ>100µm. Estimates of the ratio of the mass of the cold dust
(CD) component detected at Td=20-30K to a very cold dust (VCD)
component with Td∼10-15K suggest that between 2%-100% of the
cirrus-like CD mass can also exist in many of these galaxies as VCD.
In one galaxy, M33, the DIRBE photometry at 240µm 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 IRAS and that can be used to construct a flux-limited all-sky
catalog of galaxies brighter than 1000Jy with a modest completeness
limit of about 65%.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table12.dat 76 52 Photometry of detected IRAS galaxies (table 1)
and IRAS galaxies not detected at 140 or
240µm (table 2)
table3.dat 60 19 DIRBE galaxy candidates in IRAS unsurveyed region
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See also:
VII/193 : The CfA Redshift Catalogue, Version June 1995 (Huchra+ 1995)
Byte-by-byte Description of file: table12.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Galaxy Galaxy name
11- 20 A10 --- MType Morphological type
22 A1 --- l_Size [~] Limit flag on Size
23- 27 F5.1 arcmin Size Maximum B-band angular size of the
optical galaxy
29 A1 --- l_S12um Limit flag on 12um
30- 34 F5.1 Jy S12um Background-subtracted and beam-response
corrected DIRBE peak flux density at 12µm
36 A1 --- l_S25um Limit flag on 25um
37- 41 F5.1 Jy S25um Background-subtracted and beam-response
corrected DIRBE peak flux density at 25µm
43 A1 --- l_S60um Limit flag on 60um
44- 49 F6.1 Jy S60um Background-subtracted and beam-response
corrected DIRBE peak flux density at 60µm
51 A1 --- l_S100um Limit flag on 100um
52- 57 F6.1 Jy S100um Background-subtracted and beam-response
corrected DIRBE peak flux density at 100µm
59 A1 --- l_S140um Limit flag on 140um
60- 65 F6.1 Jy S140um Background-subtracted and beam-response
corrected DIRBE peak flux density at 140µm
67 A1 --- l_S240um Limit flag on 240um
68- 73 F6.1 Jy S240um Background-subtracted and beam-response
corrected DIRBE peak flux density at 240µm
75 A1 --- Note [DN] Note on the detection (1)
76 A1 --- n_Galaxy [*] Note for M31 (2)
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Note (1): D: Detected IRAS galaxy
N: IRAS galaxy not detected at 140 or 240µm
Note (2): DIRBE-integrated photometry for M31 at 1.25, 2.2, 3.5, and
4.9µm is as follows:
534, 461, 245, and 128 Jy, respectively.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1 A1 --- n_Galaxy [SL] S: Strong Candidates
L: Less Confident Candidates
3- 12 A10 --- Galaxy Galaxy name
14- 19 A6 --- MType Morphological type
21- 25 F5.1 deg GLON Galactic longitude
27- 31 F5.1 deg GLAT Galactic latitude
33 A1 --- l_S60um Limit flag on S60µm
34- 38 F5.1 Jy S60um Background-corrected peak flux density at 60µm
40 A1 --- l_S100um Limit flag on S100µm
41- 45 F5.1 Jy S100um Background-corrected peak flux density at 100µm
47 A1 --- l_S140um Limit flag on S140µm
48- 53 F6.1 Jy S140um Background-corrected peak flux density at 140µm
55 A1 --- l_S240um Limit flag on S240µm
56- 60 F5.1 Jy S240um Background-corrected peak flux density at 240µm
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History: From ApJ electronic version
(End) James Marcout, Patricia Bauer [CDS] 22-Sep-1998