NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-18 T11:03:13 PDT
Help | Comment | NED Home

For refcode 1996AJ....111..645F:
Retrieve 163 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
1996AJ....111..645F OPTICAL MORPHOLOGY OF BRIGHT QUASARS ON IMAGES TAKEN WITH 1.2 m SCHMIDT CAMERAS DIRK FABIAN Department of Astronomy and Astrophysics, Villanova University, Villanova, Pennsylvania 19085 P. D. USHER Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, Pennsylvania 16802 Received 1995 September 3; revised 1995 October 19 ABSTRACT The optical morphology of bright extragalactic objects listed by Green et at. [ApJS, 61,305 (1986)] is determined on Palomar Observatory Sky Survey prints. Morphological types are assigned according to whether objects appear resolved or unresolved. These are plotted in the Hubble Diagram. When combined with previous results from the Medium-Bright Quasar Survey (MBQS), objects of redshift z are found to be unresolved on 1.2 m Schmidt telescopes at apparent magnitudes brighter than B = 21 - 3/4z over a large magnitude range 12.5 < B < 18.5. A luminosity cutoff for unresolved objects in this range is found to be M_B_ = -24, (H_0_ = 50), in agreement with an earlier estimate. Relevance to the search for large, bright, host galaxies, and for "naked quasar" candidates, is noted.
Retrieve 163 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home