other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
1998AN....319..163B - Astron. Nachr., 319, 163-166 (1998)
Ultrasoft narrow-line Seyfert 1 galaxies and X-ray surveys.
BRANDT N. and BOLLER T.
Journal keyword(s):
Errata: This paper supersedes 1998AN....319....7B.
Simbad objects: 3
To bookmark this query, right click on this link: simbad:1998AN....319..163B and select 'bookmark this link' or equivalent in the popup menu