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Date and Time of the Query: 2019-08-22 T07:12:52 PDT
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For refcode 1994A&A...283...21S:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1994A&A...283...21S CO versus H I in the Tully-Fisher relation for a sample of 32 galaxies F. Schoniger and Y. Sofue Institute of Astronomoy, University of Tokyo, Mitaka, Tokyo 181, Japan Max-Planck-Institut fur extraterrestrische Physik, Giessenbachstrasse, D- 85748 Garching, Germany Received 4 May 1993 / Accepted 11 September 1993 Abstract. As a basic step for establishing the CO-line Tully-Fisher relation for distant galaxies, we made a comparative study of HI versus CO line profiles. Total line profiles of the CO line emission from 32 galaxies have been compared with the corresponding HI emission. We found a good correlation between the profiles of CO and HI. This strongly supports the thesis that CO can be used in the Tully-Fisher relation for distant galaxies where HI observations cannot reach. We also argue that CO can be used as an alternative to HI for non-isolated galaxies such as those in dense cluster of galaxies. Using the B-magnitudes and a recent calibration of the HI Tully-Fisher relation we give the distances for the galaxies derived from the CO-line Tully-Fisher relation and compare them with the corresponding HI distances. Key words: galaxies: general - galaxies: distances - galaxies: ISM - galaxies: fundamental parameters - radio lines: galaxies
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