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The 1000 Brightest HIPASS Galaxies : Newly Cataloged Galaxies
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ryan-Weber, Emma V. Koribalski, Bärbel S. Staveley-Smith, Lister Jerjen, Helmut Charu R. Kraan-Korteweg Ryder, Stuart D. Barnes, David G. Blok, W. J. G. De Kilborn, Virginia A. Bhathal Boyce, Peter James Disney, Mike J. Drinkwater, Michael Ekers, Ron D. Freeman, Kenneth C. Gibson, Brad K. Green, A. J. H. Haynes, Robin F. Henning, Patricia A. Juraszek, S. Kesteven Knezek, Patricia Mader, S. Zhou, Xiaochen Meyer, Martin J. Minchin, Robert F. Mould, Richard Brien, Jeffrey B. O’ Oosterloo, Tom A. Price, Rachel Middleton Putman, Mary E. Sadler, E. M. Schröder, Anja Stewart, I. M. Stootman, Frank H. Waugh, Meryl Webster, Rachel Lindsey Wright, Alan E. Zwaan, Martin A. |
| Copyright Year | 2002 |
| Abstract | The H i Parkes All-Sky Survey (HIPASS) is a blind 21-cm survey for extragalactic neutral hydrogen, covering the whole southern sky. The HIPASS Bright Galaxy Catalog (BGC; Koribalski et al. 2002) is a subset of HIPASS and contains the 1000 H i-brightest (peak flux density) galaxies. Here we present the 138 HIPASS BGC galaxies, which had no redshift measured prior to the Parkes multibeam H i surveys. Of the 138 galaxies, 87 are newly cataloged. Newly cataloged is defined as no optical (or infrared) counterpart in the NASA/IPAC Extragalactic Database. Using the Digitized Sky Survey we identify optical counterparts for almost half of the newly cataloged galaxies, which are typically of irregular or magellanic morphological type. Several H i sources appear to be associated with compact groups or pairs of galaxies rather than an individual galaxy. The majority (57) of the newly cataloged galaxies lie within ten degrees of the Galactic Plane and are missing from optical surveys due to confusion with stars or dust extinction. This sample also includes newly cataloged galaxies first discovered in the H i shallow survey of the Zone-of-Avoidance (Henning et al. 2000). The other 30 newly cataloged galaxies escaped detection due to their low surface brightness or optical compactness. Only one of these, HIPASS J0546–68, has no obvious optical counterpart as it is obscured by the Large Magellanic Cloud. We find that the newly cataloged galaxies with |b| > 10 are generally lower in H i mass and narrower in velocity width compared with the total HIPASS BGC. In contrast, newly cataloged galaxies behind the Milky Way are found to be statistically similar to the entire HIPASS BGC. In addition to these galaxies, the HIPASS BGC contains four previously unknown H i clouds. Subject headings: surveys — galaxies: distances and redshifts, fundamental parameters, kinematics and dynamics — radio emission lines |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/astro-ph/0206447v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Confusion Digitized Sky Survey Distance Galaxy Hydrogen Magellanic Catalogue of Stars Medical Subject Headings NASA/IPAC Extragalactic Database One Thousand Radio wave Redshift Star Wars Galaxies Stars, Celestial Subgroup Velocity (software development) width |
| Content Type | Text |
| Resource Type | Article |
