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Query : 1998ApJ...507..774Y |
1998ApJ...507..774Y - Astrophys. J., 507, 774-780 (1998/November-2)
CO (J = 4 ⟶ 3) and 650 micron continuum observations of the z = 0.93 hyperluminous infrared galaxy FSC 15307+3252.
YUN M.S. and SCOVILLE N.Z.
Abstract (from CDS):
The 3 σ upper limit on the velocity-integrated CO (4-3) line flux is 1.6 Jy.km.s–1 (for ΔV = 300 km.s–1). This corresponds to a surprisingly small total molecular gas mass limit of 5x109 h–2 M☉ for this galaxy with infrared luminosity LFIR > 1013 L☉. Combined with existing photometry data, our 3 σ upper limit of 5.1 mJy for the 239 GHz (650 µm rest wavelength) continuum flux yields a total dust mass of 0.4-1.5 times 108 M☉. The CO luminosity (thus molecular gas content) and the resulting gas-to-dust ratio are lower than the values typical for the more gas-rich infrared galaxies, but they are within the observed ranges. On the other hand, FSC 15307+3252 has a dust content and infrared luminosity 40 and 200 times larger than the infrared bright elliptical-like galaxies NGC 1275 and Cygnus A.
The far-infrared (FIR) luminosity to dust mass ratios, LFIR/Mdust, for all three galaxies hosting a powerful active galactic nucleus (FSC 10214+4724, FSC 15307+3252, and Cygnus A) are larger than reasonably expected for a galaxy dominated by a starburst and 4 times larger than Arp 220. Therefore the bulk of the observed FIR luminosity in these galaxies is likely powered by their luminous active nuclei.
Abstract Copyright: ∼
Journal keyword(s): ISM: Dust, Extinction - Galaxies: Active - Galaxies: Formation - Galaxies: Individual: Alphanumeric: FSC 15307+3252 - Infrared: Galaxies - ISM: Molecules
Simbad objects: 11
Number of rows : 11 |
N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 3C 84 | Sy2 | 03 19 48.1599902040 | +41 30 42.108850836 | 13.10 | 12.48 | 11.09 | ~ | 4024 | 4 | ||
2 | 4C 41.17 | rG | 06 50 52.098 | +41 30 30.53 | ~ | 337 | 1 | |||||
3 | 4C 05.41 | rG | 10 19 33.4 | +05 34 35 | 20.0 | ~ | 45 | 1 | ||||
4 | [VV96] J102434.5+470911 | Sy1 | 10 24 34.5 | +47 09 11 | 20.5 | ~ | 487 | 0 | ||||
5 | QSO B1202-074 | QSO | 12 05 23.1360370080 | -07 42 32.759842896 | 17.5 | ~ | 379 | 5 | ||||
6 | QSO J1415+1129 | QSO | 14 15 46.25 | +11 29 43.4 | 17.63 | 17.23 | ~ | 652 | 0 | |||
7 | 4C 63.20 | rG | 14 36 37.4 | +63 19 13 | 23.6 | ~ | 80 | 1 | ||||
8 | 2XMM J153244.0+324248 | Sy2 | 15 32 44.0246599800 | +32 42 46.679782356 | 19.8 | ~ | 107 | 0 | ||||
9 | IC 4553 | SyG | 15 34 57.22396 | +23 30 11.6084 | 14.76 | 13.88 | ~ | 2966 | 4 | |||
10 | 6C 171301+501842 | Sy2 | 17 14 14.8 | +50 15 31 | 24.05 | 22.64 | ~ | 110 | 1 | |||
11 | NAME Cyg A | Sy2 | 19 59 28.35656837 | +40 44 02.0972325 | 16.22 | 15.10 | ~ | 2381 | 2 |
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