Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-06-05
Astronomy and Astrophysics
Astrophysics
LaTex, 40 pages with 9 postscript and 3 jpg figures, ApJ, in press
Scientific paper
10.1086/306234
Rest-frame 0.48-1.1 micron emission line strengths and molecular gas mass (H_2) upper limits for 3 luminous infrared sources - the hyperluminous infrared galaxies IR F09105+4108 (z=0.44), IR F15307+3252 (z=0.93), and the optically-selected QSO PG 1634+706 (z=1.3) - are presented. Diagnostic emission-line ratios indicate a Seyfert 2-like spectrum for both infrared galaxies, consistent with previously published work. The upper limits of molecular gas mass for all 3 sources are M(H_2) < 1-3x10^10 h^-2 M_sun (q=0.5, H=100h km/s/Mpc), less than that of the most gas-rich infrared galaxies in the local Universe. All 3 sources have L_ir/L'_CO = 1300-2000, and thus are the extragalactic sources with the most extreme L_ir/L'_CO values measured to date. Given the relatively warm far-infrared colors for all 3 objects, much of their infrared luminosity may emanate from a relatively modest amount of warm dust (e.g. M_d = 10^5-7 M_sun, T_d = 200-100 K) near the AGN...
Cutri Roc M.
Downes Dennis
Evans Aaron S.
Kramer Carsten
Radford Simon J. E.
No associations
LandOfFree
NIR Spectroscopy and a Search for CO Emission in Three Extremely Luminous IRAS Sources; IR 09105+4108, IR 15307+3252, and PG 1634+706 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with NIR Spectroscopy and a Search for CO Emission in Three Extremely Luminous IRAS Sources; IR 09105+4108, IR 15307+3252, and PG 1634+706, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NIR Spectroscopy and a Search for CO Emission in Three Extremely Luminous IRAS Sources; IR 09105+4108, IR 15307+3252, and PG 1634+706 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-419430