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the einstein database of ipc x-ray observations of optically selected and radio-selected quasars, 1.We present the first volume of the Einstein quasar database. The database includes estimates of the X-ray count rates, fluxes, and luminosities for 514 quasars and Seyfert 1 galaxies observed with the Imaging Proportional Counter (IPC) aboard the Einstein Observatory. All were previously known optically selected or radio-selected objects, and most were the targets of the X-ray observations. The X-ray properties of the Active Galactic Nuclei (AGNs) have been derived by reanalyzing the IPC data in a systematic manner to provide a uniform database for general use by the astronomical community. We use the database to extend earlier quasar luminosity studies which were made using only a subset of the currently available data. The database can be accessed on internet via the SAO Einstein on-line system ('Einline') and is available in ASCII format on magnetic tape and DOS diskette.
Document ID
19950030785
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Wilkes, Belinda J.
(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA United States)
Tananbaum, Harvey
(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA United States)
Worrall, D. M.
(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA United States)
Avni, Yoram
(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA United States)
Oey, M. S.
(Steward Observatory, Tucson, AZ United States)
Flanagan, Joan
(Harvard-Smithsonian Centers for Astrophysics, Cambridge, MA United States)
Date Acquired
August 16, 2013
Publication Date
May 1, 1994
Publication Information
Publication: The Astrophysical Journal Supplement Series
Volume: 92
Issue: 1
ISSN: 0067-0049
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAS8-39073
CONTRACT_GRANT: NAS8-30751
Distribution Limits
Public
Copyright
Other