Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...270l..49s&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 270, July 15, 1983, p. L49-L52.
Astronomy and Astrophysics
Astronomy
41
Gamma Ray Astronomy, Gamma Ray Bursts, Visual Observation, Astrometry, Errors, Reference Stars, Stellar Spectrophotometry, Variable Stars
Scientific paper
The small size of the 1928 optical error box for the 1978 November 19 gamma-ray burster (GRB) allows for a very deep search for the quiescent optical counterpart. A CCD camera on the Cerro Tololo Inter-American Observatory 4 m telescope has been used to search this field to a m(B) fainter than 25.0. Several objects in the 1928 error box, are found, including one which varies by over 1 mag on a time scale of under a day. This variable object corresponds in position to object A of Pedersen et al. (1982). Since it is confirmed that their object B has disappeared, there are two faint variables is the field. It is currently unclear which one (if either) of the variables is the true GRB counterpart. Astrometry and U, B, V, and r photometry for eight nearby comparison stars are also reported.
Bradt Hale
Schaefer Bradley E.
Seitzer Pat
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