Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...369l..71m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 369, March 10, 1991, p. L71-L74.
Astronomy and Astrophysics
Astrophysics
12
Astronomical Photometry, Faint Object Camera, Globular Clusters, Novae, Binary Stars, Faint Objects, H Alpha Line, Ophiuchi Clouds
Scientific paper
The 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.
Anderson Scott F.
Bohlin Ralph Charles
Downes Ronald A.
Jakobsen Peter
Margon Bruce
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