LOST VARIABLES IN SAGITTARIUS AND
CYGNUS RECOVERED ON NANTUCKET PLATES
Academy of Sciences
Reiss Science Building
and O Streets, N.W.
of Physics and Astronomy
at the 89th Annual Meeting of the AAVSO, October 28, 2000
Mass discoveries of variable
stars by modern automatic sky surveys make it very important to determine
accurate coordinates for all previously documented variable stars. For many
“old” variable stars, no finding charts were ever published, and only rough
coordinates were reported. Existing collections of sky photographs, however,
make it possible to recover such “lost” variable stars. Here, we present our
results on the recovery of nine “lost” variable stars: NY Cyg, QX Cyg, VW Sgr,
GW Sgr, GZ Sgr, HK Sgr, HT Sgr, HU Sgr, and HW Sgr, using plates from the Maria
Mitchell Observatory collection in Nantucket, Massachusetts. For the stars
recovered, we present finder charts, accurate coordinates, improved
classification, and light elements. In the case of HW Sgr, there is an
indisputably variable star approximately in the published position, but the
character of its variability is in complete disagreement with earlier data.
Either HW Sgr was misclassified by the discoverer, or the discoverer’s position for the star is in error and we have
actually discovered a new variable.
Link to ADS abstract, article and citation information