Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ycat..40490715t&link_type=abstract
VizieR On-line Data Catalog: J/A+AS/49/715. Originally published in: 1982A&AS...49..715T
Astronomy and Astrophysics
Astronomy
Stars: Variable, Photometry: Photographic
Scientific paper
621 new variable stars have been detected on plates obtained with the Schmidt telescopes of the Mount Palomar Observatory (1968) and of the European Southern Observatory (1976-1980). The astrometric measurements (ESO-CERN) and the photometrical ones (CDCA) which have followed the detection the variable stars (Observatoire de Lyon) have led to determine the parameters α, δ, l, b, R(Max), R(Min), δm. So we notice that: - 379 variable stars have an amplitude of variation in magnitude between 0.5 and 2.0 (delm/N histogram). -The number of variable stars strongly decreases towards the great amplitudes. -The surface density of variable stars by square degree in this central galactic direction increases from 2 to 21 in the explored field of 5.5degx5.5deg size. (2 data files).
Bijaoui Albert
Ju K. H.
Ounnas Ch.
Terzan A.
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