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CCD photometry of the BL Lacertae object 1400+162 and the associated group of galaxiesSurface photometry of the BL Lacertae object 1400+162 and an apparently associated group of galaxies has been obtained using a CCD camera. Observations were made in V, broad bandpasses centered on 0.75 micron and 1.0 micron and with no filter. The colors of all but two of the galaxies suggest they are ellipticals, with the colors of the remaining two considerably bluer. Analysis using a method described by Schechter and Press (1976) suggests the group is a small one. The group may be similar to the one associated with the quasar 3C 273. The spectral index of the BL Lac object is 1.49 + or 0.21. This value allows, but does not require, the presence of an underlying elliptical galaxy. The radio-optical and optical-X-ray indices for 1400+162 are similar to values found for quasars.
Document ID
19830061822
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Weistrop, D.
(NASA Goddard Space Flight Center Laboratory for Astronomy and Solar Physics, Greenbelt, MD, United States)
Reitsema, H. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Smith, B. A.
(Arizona, University Tucson, AZ, United States)
Shaffer, D. B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
August 15, 1983
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 271
ISSN: 0004-637X
Subject Category
Astronomy
Accession Number
83A43040
Funding Number(s)
CONTRACT_GRANT: NGL-03-002-002
Distribution Limits
Public
Copyright
Other

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