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9 papers · 1 filter
The Properties of Post-Starburst Quasars Based on Optical Spectroscopy
Sabrina L. Cales, Michael S. Brotherton, Zhaohui Shang +8
We present optical spectroscopy of a sample of 38 post-starburst quasars (PSQs) at z ~ 0.3, 29 of which have morphological classifications based on Hubble Space Telescope imaging.…
The orientation dependence of quasar single-epoch black hole mass scaling relationships
Jessie C. Runnoe, Michael Brotherton, Zhaohui Shang +2
Black hole masses are estimated for radio-loud quasars using several self-consistent scaling relationships based on emission-line widths and continuum luminosities. The emission li…
Characterizing Ultraviolet and Infrared Observational Properties for Galaxies. I. Influences of Dust Attenuation and Stellar Population Age
Ye-Wei Mao, Robert C. Kennicutt, Cai-Na Hao +2
The correlation between infrared-to-ultraviolet luminosity ratio and ultraviolet color, i.e. the IRX-UV relation, was regarded as a prevalent recipe for correcting extragalactic du…
Updating quasar bolometric luminosity corrections. II. Infrared bolometric corrections
Jessie C. Runnoe, Michael S. Brotherton, Zhaohui Shang
We present infrared bolometric luminosity corrections derived from the detailed spectral energy distributions of 62 bright quasars of low- to moderate-redshift (z=0.03-1.4). At 1.5…
A Study of Heating and Cooling of the ISM in NGC 1097 with Herschel-PACS and Spitzer-IRS
P. Beirao, L. Armus, G. Helou +38
NGC 1097 is a nearby Seyfert 1 galaxy with a bright circumnuclear starburst ring, a strong large-scale bar and an active nucleus. We present a detailed study of the spatial variati…
Molecular Gas in Infrared Ultraluminous QSO Hosts
X. Y. Xia, Y. Gao, C. -N. Hao +6
We report CO detections in 17 out of 19 infrared ultraluminous QSO (IR QSO) hosts observed with the IRAM 30m telescope. The cold molecular gas reservoir in these objects is in a ra…