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- Publications
- Influence
The Star Formation Rate and Dense Molecular Gas in Galaxies
- Y. Gao, P. Solomon
- Physics
- 14 October 2003
HCN luminosity is a tracer of dense molecular gas, n(H(2)) greater than or similar to3 x 10(4) cm(-3), associated with star-forming giant molecular cloud (GMC) cores. We present the results and… Expand
HCN SURVEY OF NORMAL SPIRAL, INFRARED-LUMINOUS, AND ULTRALUMINOUS GALAXIES
- Y. Gao, P. Solomon
- Physics
- 14 October 2003
We report systematic HCN J = 1-0 (and CO) observations of a sample of 53 infrared (IR) and/or CO-bright and/or luminous galaxies, including seven ultraluminous infrared galaxies, nearly 20 luminous… Expand
Connecting Dense Gas Tracers of Star Formation in our Galaxy to High-z Star Formation
- Jingwen Wu, N. Evans, Y. Gao, P. Solomon, Yancy L. Shirley, P. V. Bout
- Physics
- 15 November 2005
Observations have revealed prodigious amounts of star formation in starburst galaxies as traced by dust and molecular emission, even at large redshifts. Recent work shows that for both nearby spiral… Expand
THE MOLECULAR GAS IN LUMINOUS INFRARED GALAXIES. II. EXTREME PHYSICAL CONDITIONS AND THEIR EFFECTS ON THE X co FACTOR
- P. P. Papadopoulos, P. D. Werf, E. Xilouris, K. Isaak, Y. Gao
- Physics
- 8 February 2012
In this work, we conclude the analysis of our CO line survey of luminous infrared galaxies (LIRGs: L-IR greater than or similar to 10(11) L-circle dot) in the local universe (Paper I) by focusing on… Expand
The molecular gas in Luminous Infrared Galaxies I: CO lines, extreme physical conditions, and their drivers
- P. P. Papadopoulos, P. D. Werf, E. Xilouris, K. Isaak, Y. Gao, S. Muehle
- Physics
- 19 September 2011
We report results from a large molecular line survey of luminous infrared galaxies (L-IR greater than or similar to 10(11) L-circle dot) in the local Universe (z less than or similar to 0.1),… Expand
Major-merger Galaxy Pairs in the COSMOS Field—Mass-dependent Merger Rate Evolution since z = 1
We present results of a statistical study of the cosmic evolution of the mass-dependent major-merger rate since z = 1. A stellar mass limited sample of close major-merger pairs (the CPAIR sample) was… Expand
Molecular Gas and the Modest Star Formation Efficiency in the “Antennae” Galaxies: Arp 244 = NGC 4038/9
- Y. Gao, K. Y. Lo, +6 authors U. Calgary
- Physics
- 6 October 2000
We report here a factor of 5.7 higher total CO flux in Arp 244 (the "Antennae" galaxies) than that previously accepted in the literature (thus a total molecular gas mass of 1.5 × 1010 M☉), based on… Expand
Nonnuclear Hyper/Ultraluminous X-Ray Sources in the Starbursting Cartwheel Ring Galaxy
- Y. Gao, Q. Wang, P. Appleton, R. Lucas
- Physics
- 8 September 2003
We report the Chandra/ACIS-S detection of more than 20 ultraluminous X-ray sources (ULXs, L0.5−10keV > �3 × 10 39 ergss −1 ) in the Cartwheel collisional ring galaxy system, of which over a dozen are… Expand
Molecular Gas Depletion and Starbursts in Luminous Infrared Galaxy Mergers
- Y. Gao, P. Solomon
- Physics
- 17 December 1998
Most luminous infrared galaxies (LIGs) are closely interacting/merging systems that are rich in molecular gas. Here we study the relationship between the stage of the galaxy-galaxy interactions, the… Expand
HCN Observations of Dense Star-Forming Gas in High Redshift Galaxies
- Y. Gao, C. Carilli, P. Solomon, P. V. Bout
- Physics
- 21 March 2007
We present here the sensitive HCN ( 1 - 0) observations made with the VLA of two submillimeter galaxies and two QSOs at high redshift. HCN emission is the signature of dense molecular gas found in… Expand