Optical Gravitational Lensing Experiment. A CCD Search for Variable Stars in Open Clusters -- NGC 5381

Details Optical Gravitational Lensing Experiment. A CCD Search for Variable Stars in Open Clusters -- NGC 5381 Optical Gravitational Lensing Experiment. A CCD Search for Variable Stars in Open Clusters -- NGC 5381

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aca....47..437p&link_type=abstract

Acta Astronomica, v.47, pp.437-450, (1997).

Astronomy and Astrophysics

Astronomy

6

Open Clusters And Associations: Individual: Ngc 5381, Binaries: Eclipsing

Scientific paper

We present results of the search for variable stars in the field of the open cluster NGC 5381. Observations conducted from March to September 1997 led to discovery of 18 new variable stars. 13 stars are eclipsing variables; light curves of 7 of them are typical for W UMa type stars and remaining six are EA Algol-like systems. Five stars, for which we cannot estimate periods from the present data, we call tentatively long term variables. For previously known variable QR Cen an accurate light curve was obtained. This star turned out to be an EA type eclipsing system with the period of 2.^d2903 (about two times longer than obtained earlier).

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