Contents
Images
Upload your image
DSS Images Other Images
Related articles
The Einstein Observatory Medium Sensitivity Survey - Optical identifications for a complete sample of X-ray sources
It is suggested that virtually all the X-ray sources in the EinsteinObservatory's Medium Sensitivity Survey flux range can be identifiedwith objects visible on the POSS, on the basis of the completeidentification of all sources north of -25 deg declination. There is noevidence for a significant population of 'blank field' X-ray sources atthis flux level, and therefore no evidence for any new X-ray sourceclass with very high L(x)/L(v). Most of the quasars detected in thepresent survey are spectroscopically similar to optical orradio-selected quasars. About 25 percent of the quasar sample, however,had reddish colors, and permitted lines dominated by a narrow-linecomponent. These objects form a second sequence of active galacticnuclei, distinct in their optical properties from the broad lineobjects.
|
Submit a new article
Related links
Submit a new link
Member of following groups:
|
Observation and Astrometry data
| Constellation: | Serpens |
| Right ascension: | 15h36m00.75s |
| Declination: | +00°16'07.5" |
| Apparent magnitude: | 9.23 |
| Proper motion RA: | 9.1 |
| Proper motion Dec: | -54 |
| B-T magnitude: | 9.904 |
| V-T magnitude: | 9.286 |
Catalogs and designations:
|
