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16 papers
HCN Observations of Dense Star-Forming Gas in High Redshift Galaxies
Yu Gao, Chris L. Carilli, Philip M. Solomon +1
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…
Dense Molecular Gas and the Role of Star Formation in the Host Galaxies of Quasi-Stellar Objects
A. S. Evans, P. M. Solomon, L. J. Tacconi +2
New millimeter-wave CO and HCN observations of the host galaxies of infrared-excess Palomar Green quasi-stellar objects (PG QSOs) previously detected in CO are presented. These obs…
Connecting Dense Gas Tracers of Star Formation in our Galaxy to High-z Star Formation
Jingwen Wu, Neal J. Evans, Yu Gao +3
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…
A Search for Dense Molecular Gas in High Redshift Infrared-Luminous Galaxies
C. L. Carilli, P. Solomon, P. Vanden Bout +8
We present a search for HCN emission from four high redshift far infrared (IR) luminous galaxies. Current data and models suggest that these high IR luminous galaxies represent…
High Redshift HCN Emission: Dense Star-Forming Molecular Gas in IRAS F10214+4724
P. A. Vanden Bout, P. M. Solomon, R. J. Maddalena
Hydrogen cyanide emission in the J=1-0 transition has been detected at redshift z=2.2858 in IRAS F10214+4724 using the Green Bank Telescope . This is the second detection of HCN em…
HCN Survey of Normal Spiral, IR-luminous and Ultraluminous Galaxies
Yu Gao, Philip M. Solomon
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, nea…