A Variable Star Census in a Perseus Field

Abstract

The Berlin Exoplanet Search Telescope is a small-aperture, wide-field telescope dedicated to time-series photometric observations. During an initial commissioning phase at the Thüringer Landessternwarte Tautenburg, Germany, and subsequent operations at the Observatoire de Haute-Provence, France, a 10 deg 2 circumpolar field close to the galactic plane centered at (α, δ) = (02 h 39 m 23 s , +52 • 01 46 ) (J 2000.0) was observed between 2001 August and 2006 December during 52 nights. From the 32129 stars observed, a subsample of 145 stars with clear stellar variability was detected out of which 125 are newly identified variable objects. For five bright objects, the system parameters were derived by modeling the light curve.

VARIABILITY SURVEY IN THECoRoTSRa01 FIELD: IMPLICATIONS OF ECLIPSING BINARY DISTRIBUTION ON CLUSTER FORMATION IN NGC 2264

“…Our observations help to decide which one is the variable source if the amplitude of such variation is above our detection limit. Similar observations for the same purpose were reported in Karoff et al (2007), Kabath et al (2007Kabath et al ( , 2008Kabath et al ( , 2009a, Pasternacki et al (2011) and Fruth et al (2012). Since our observations on NGC 2264 cover a whole season, time-series photometric data can also be used to investigate the photometric optical behaviour of the stars between the epochs of the two CoRoT studies.…”

THE BERLIN EXOPLANET SEARCH TELESCOPE II CATALOG OF VARIABLE STARS. II. CHARACTERIZATION OF THE CoRoT SRc02 FIELD

“…An illustration of the BEST II and the CoRoT field SRc02 is shown in Figure 1.~65% of the CoRoT field is covered by BEST II, which was centered on the coordinates The acquired observations were processed using the BEST automated photometric pipeline as described in Kabath et al (2009b), Rauer et al (2010), Pasternacki et al (2011b), and Fruth et al (2012). The resulting data sets consist of 1307 observations of 86,944 stellar objects.…”

An M Dwarf Companion to an F-Type Star in a Young Main-Sequence Binary

“…The eclipsing binary presented in our work was detected in both surveys (Voss 2006;Eigmüller 2012) as planetary candidate. The object was published as an uncharacterized Algol type binary in Pasternacki et al (2011) with the identifier BEST F2 06375 after its planetary status was excluded. First estimates of the mass-radius relation gave hints on a possibly inflated very low mass star, which led to further follow-up observations.…”