Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2010-10-19
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
63 pages preprint style including 16 figures and 11 tables; accepted by ApJ
Scientific paper
We present results from the X-ray portion of a multi-wavelength study of local ULIRGs and QSOs called QUEST (Quasar-ULIRG Evolution STudy). The data consist of new and archival X-ray data on 40 ULIRGs and 26 PG QSOs taken with Chandra and XMM-Newton. A combination of traditional and hardness ratio spectral fitting methods is used to characterize the X-ray properties of these objects. The absorption-corrected 2-10 keV to bolometric luminosity ratios of the ULIRGs and PG QSOs suggest that the likelihood for dominant nuclear activity increases along the merger sequence from "cool" ULIRGs, "warm" ULIRGs, infrared-bright QSOs, and infrared-faint QSOs. The starburst dominates the total power in ULIRGs prior to the merger, and this is followed by rapid black hole growth during and after coalescence. These results are in general agreement with those obtained in the mid-infrared with Spitzer and recent numerical simulations.
Teng Stacy H.
Veilleux Sylvain
No associations
LandOfFree
X-QUEST: A Comprehensive X-ray Study of Local ULIRGs and QSOs 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 X-QUEST: A Comprehensive X-ray Study of Local ULIRGs and QSOs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-QUEST: A Comprehensive X-ray Study of Local ULIRGs and QSOs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-716664