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Revisiting the Dichotomy of Early-type Galaxies
Yan-Qin He, Cai-Na Hao, Xiao-Yang Xia
We study the relationship among isophotal shapes, central light profiles and kinematic properties of early-type galaxies (ETGs) based on a compiled sample of 184 ETGs. These sample…
Photometric properties and luminosity function of nearby massive early-type galaxies
Y. Q. He, X. Y. Xia, C. N. Hao +3
We perform photometric analyses for a bright early-type galaxy (ETG) sample with 2949 galaxies ( mag) in the redshift range of 0.05 to 0.15, drawn from the SDSS DR…
Star Formation Rates in Resolved Galaxies: Calibrations with Near and Far Infrared Data for NGC5055 and NGC6946
Yiming Li, Alison F. Crocker, Daniela Calzetti +21
We use the near--infrared Brγhydrogen recombination line as a reference star formation rate (SFR) indicator to test the validity and establish the calibration of the {\it Herschel}…
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…
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…
Resolving the Far-IR Line Deficit: Photoelectric Heating and Far-IR Line Cooling in NGC 1097 and NGC 4559
Kevin V. Croxall, J. D. Smith, M. G. Wolfire +30
The physical state of interstellar gas and dust is dependent on the processes which heat and cool this medium. To probe heating and cooling of the ISM over a large range of infrare…