Three-Color Photometry of Southern QSOs, Radio Galaxies and Normal Galaxies
| dc.contributor.author | Westerlund, B. E. | |
| dc.contributor.author | Wall, J. V. | |
| dc.date.accessioned | 2017-06-02T20:40:11Z | |
| dc.date.available | 2017-06-02T20:40:11Z | |
| dc.date.issued | 1968-12 | |
| dc.identifier.citation | AJ 74: 335-351 (1969) | en |
| dc.identifier.uri | http://hdl.handle.net/10150/623842 | |
| dc.description.abstract | Data on the UBV system are presented for 14 quasistellar radio sources, 8 N galaxies,39 radio galaxies and 19 radioquiet galaxies south of +20° declination. Their positions in the two - color diagram show that the integrated colors of the radio galaxies are similar to those of the radioquiet galaxies of the same morphological type. In an absolute radio magnitude - radio index diagram a linear relation exists between M158 and ím158 Boo for radio galaxies of all classes. The QSO:s, however, do not follow this relation, and possible explanations are considered. The brightness and color distributions in the larger galaxies are described in detail. Our results are combined with other data for a discussion of the compositions of these systems. It is suggested that a fairly high amount of reddening occurs in the central regions of several galaxies, as for instance, in NGC 1068 and NGC 1316. | |
| dc.language.iso | en_US | en |
| dc.publisher | Steward Observatory, The University of Arizona (Tucson, Arizona) | en |
| dc.relation.ispartofseries | Preprints of the Steward Observatory #16 | en |
| dc.relation.url | http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1969AJ.....74..335W&db_key=AST&data_type=HTML&format=&high=3ed65e9cd003926 | en |
| dc.rights | Copyright © All Rights Reserved. | en |
| dc.source | Steward Observatory Parker Library SO QB 4 .S752 ARCH | en |
| dc.subject | Radio galaxies | en |
| dc.subject | Galaxies | en |
| dc.subject | Southern hemisphere | en |
| dc.subject | Photometry | en |
| dc.title | Three-Color Photometry of Southern QSOs, Radio Galaxies and Normal Galaxies | en_US |
| dc.type | text | en |
| dc.type | Article | en |
| dc.contributor.department | Univ Arizona, Steward Observ | en |
| dc.description.collectioninformation | This title from the Steward Observatory Preprints collection is made available by the Steward Observatory Parker Library and the University Libraries, The University of Arizona. If you have questions about titles in this collection, please contact Parker Library librarian Betty Fridena, bfridena@as.arizona.edu. | en |
| refterms.dateFOA | 2018-06-28T00:31:59Z | |
| html.description.abstract | Data on the UBV system are presented for 14 quasistellar radio sources, 8 N galaxies,39 radio galaxies and 19 radioquiet galaxies south of +20° declination. Their positions in the two - color diagram show that the integrated colors of the radio galaxies are similar to those of the radioquiet galaxies of the same morphological type. In an absolute radio magnitude - radio index diagram a linear relation exists between M158 and ím158 Boo for radio galaxies of all classes. The QSO:s, however, do not follow this relation, and possible explanations are considered. The brightness and color distributions in the larger galaxies are described in detail. Our results are combined with other data for a discussion of the compositions of these systems. It is suggested that a fairly high amount of reddening occurs in the central regions of several galaxies, as for instance, in NGC 1068 and NGC 1316. |
