ROSAT PUBLIC PSPC OBSERVATIONS IN THE LAS-CAMPANAS REDSHIFT SURVEY

Citation
Dl. Tucker et al., ROSAT PUBLIC PSPC OBSERVATIONS IN THE LAS-CAMPANAS REDSHIFT SURVEY, Astronomische Nachrichten, 318(3), 1997, pp. 141-148
Citations number
9
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046337
Volume
318
Issue
3
Year of publication
1997
Pages
141 - 148
Database
ISI
SICI code
0004-6337(1997)318:3<141:RPPOIT>2.0.ZU;2-D
Abstract
The Las Campanas Redshift Survey, an optically selected survey which c ontains 26 418 galaxy redshifts, has been correlated with ''The First ROSAT Source Catalogue of Pointed Observations with the PSPC,'' which contains 50 408 sources from 2876 ROSAT pointed observations. Ten matc hes were found. The optical spectra of most of the ten matches show we ak narrow emission lines. Due to their high x-ray luminosities, their high x-ray-to-optical flux ratios, and the evidence of rapid x-ray var iability in the two brightest matches, we interpret the majority of th ese objects to be narrow-line Seyfert galaxies or ''hidden'' active ga lactic nuclei. Of the ten matches, only one galaxy shows the character istics of a bona fide starburst.