ROTSE All-Sky Surveys for Variable Stars. I. Test Fields

By C. Akerlof, Susan Amrose, R. Balsano, J. Bloch, D. Casperson, S. Fletcher, G. Gisler, J. Hills, R. Kehoe, Brian C. Lee and 6 more. 2000

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The Robotic Optical Transient Search Experiment I (ROTSE-I) experiment has generated CCD photometry for the entire northern sky in two epochs nightly since 1998 March. These sky patrol data are a powerful resource for studies of astrophysical transients. As a demonstration project, we present first results of a search for periodic variable stars derived from ROTSE-I observations. Variable identification, period determination, and type classification are conducted via automatic algorithms. In a set of nine ROTSE-I sky patrol fields covering roughly 2000 deg2, we identify 1781 periodic variable stars with mean magnitudes between mv = 10.0 and mv = 15.5. About 90% of these objects are newly identified as variable. Examples of many familiar types are presented. All classifications for this study have been manually confirmed. The selection criteria for this analysis have been conservatively defined and are known to be biased against some variable classes. This preliminary study includes only 5.6% of the total ROTSE-I sky coverage, suggesting that the full ROTSE-I variable catalog will include more than 32,000 periodic variable stars.

Subfields: Astronomy and Astrophysics, Computational Mechanics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/623da411d5376a53248cc31a690daf9f61cbaf79

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Citations in the corpus

GU Bootis: A New 0.6 M☉ Detached Eclipsing Binary (2005, methodology): “The recalibration procedure is explained in detail in Akerlof et al. (2000). algorithm TODCOR (Zucker & Mazeh 1994) by G. Torres and D. Latham at the Harvard-Smithsonian Center for Astrophysics (CfA).”
THE CATALINA SURVEYS PERIODIC VARIABLE STAR CATALOG (2014, methodology): “The NSVS survey has also covered a large fraction of the sky to similar depth (8 < V < 15.5, Wozniak et al. 2004) using the Robotic Optical Transient Search Experiment (ROTSE-I, Akerlof et al. 2000).”
THE ASTRALUX LARGE M-DWARF MULTIPLICITY SURVEY (2012, background): “This star is variable and has been classified as a classical Cepheid based on this variability (Akerlof et al. 2000).”
System Description and First Light Curves of the Hungarian Automated Telescope, an Autonomous Observatory for Variability Search (2002, background): “The upgraded ASAS-3 will produce an order-of-magnitude increase in the data flow over ASAS.5 Another example showing the incompleteness of our knowledge on bright variable stars is the work by Akerlof et al. (2000), who discovered 1781 new variables in a 2000 deg2 area.”
A PHOTOMETRIC VARIABILITY SURVEY OF FIELD K AND M DWARF STARS WITH HATNet (2009, result): “…Variable Stars (NSV; Kholopov 1982), and its supplement (NSVS; Kazarovets et al. 1998).7 We also match to the ROTSE catalog of variable stars (Akerlof et al. 2000), to the ALL Sky Automated Survey Catalogue of Variable Stars (ACVS; Pojmanski 2002),8 and to the Super-WASP catalog of periodic…”
TASS Mark IV Photometric Survey of the Northern Sky (2006, background): “Systematic errors may easily dominate the error budget for bright sources, as in, for example, the Digitized Second Palomar Observatory Sky Survey (Gal et al. 2004), the ROTSE-I survey (Akerlof et al. 2000), or the All Sky Automated Survey (Pojmański 2002) (see figure 14).”
Northern Sky Variability Survey: Public Data Release (2004, methodology): “While we repeat parts of their discussion of the observing system and data reduction, there are significant differences in data processing between this work and Akerlof et al. (2000a).”
KEPLER ECLIPSING BINARY STARS. I. CATALOG AND PRINCIPAL CHARACTERIZATION OF 1879 ECLIPSING BINARIES IN THE FIRST DATA RELEASE (2010, unknown): “…samples of EBs have been generated as byproducts of automated surveys for microlensing events (e.g. OGLE, Udalski et al. 1998; Wyrzykowski et al. 2004; Udalski 2004; MACHO, Alcock et al. 1997; EROS, Grison et al. 1995) and automated searches for gamma-ray burst afterglows (Akerlof et al. 2000).”
Exploring the Variable Sky with the Sloan Digital Sky Survey (2007, background): “The Northern Sky Variability Survey (Woźniak et al. 2004) is based on ROTSE-I data.”
Candidate RR Lyrae Stars Found in Sloan Digital Sky Survey Commissioning Data (2000, methodology): “We use for this purpose a set of 180 RR Lyrae star light curves extensively measured by the ROTSE project,28 as described by Akerlof et al. (2000).”