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Faint Object Camera observations of a globular cluster nova fieldThe Faint Object Camera onboard Hubble Space Telescope has obtained U and B images of the field of Nova Ophiuchi 1938 in the globular cluster M14 (NGC 6402). The candidate for the quiescent nova suggested by Shara et al. (1986) is clearly resolved into at least six separate images, probably all stellar, in a region of 0.5 arcsec. Although two of these objects are intriguing as they are somewhat ultraviolet, the actual nova counterpart remains ambiguous, as none of the images in the field has a marked UV excess. Many stars within the 1.4 arcsec (2 sigma) uncertainty of the nova outburst position are viable counterparts if only astrometric criteria are used for selection. The 11 x 11 arcsec frames easily resolve several hundred stars in modest exposures, implying that HST even in its current optical configuration will be unique for studies of very crowded fields at moderate (B = 22) limiting magnitudes.
Document ID
19910041869
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Margon, Bruce
(Washington Univ. Seattle, WA, United States)
Anderson, Scott F.
(Washington, University Seattle, United States)
Downes, Ronald A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bohlin, Ralph C.
(Space Telescope Science Institute Baltimore, MD, United States)
Jakobsen, Peter
(ESTEC Astrophysics Div., Noordwijk, Netherlands)
Date Acquired
August 14, 2013
Publication Date
March 10, 1991
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 369
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
91A26492
Funding Number(s)
CONTRACT_GRANT: NAS5-29293
Distribution Limits
Public
Copyright
Other

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