A CO, HCN and CI line survey of Ultra Luminous Infrared Galaxies
| dc.creator | Papadopoulos, Padelis P. | |
| dc.date | 2006-02-20 | |
| dc.date.accessioned | 2026-07-07T07:00:47Z | |
| dc.date.available | 2026-07-07T07:00:47Z | |
| dc.description | Preliminary results from a sensitive survey of the CO J=1--0, 2--1, 3--2, 4--3, 6--5, HCN J=1--0, 3--2, 4--3, and CI J=1--0 lines of a sample of 30 Ultraluminous Infrared Galaxies (ULIRGs) are presented. These reveal a tandalizing picture of the physical conditions of the molecular gas in these extraordinary galaxies ($\rm L_{FIR}>10^{12} L_{\odot}$), with a diffuse phase dominating the low-J CO lines and a much denser and warmer phase dominating the CO 4-3 and 6-5 and all the HCN lines. The CI J=1--0 emission was found to be a robust tracer of their total molecular gas mass under a large range of physical conditions, a potent alternative to the much weaker emission from the $ ^{13}$CO isotopologue, and especially promising as an H$_2$ tracer for similar objects at high redshifts. | |
| dc.description | One page, IAU Symposium 231: "Astrochemistry Throughout the Universe: Recent Successes and Current Challenges" | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0602426 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0602426 | |
| dc.identifier | 2005IAUS..231..173P | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/108086 | |
| dc.subject | Astrophysics | |
| dc.title | A CO, HCN and CI line survey of Ultra Luminous Infrared Galaxies | |
| dc.type | text |