BV light curves of 11 RR Lyrae

DOI

It is not easy to identify and classify low-amplitude variables, but it is important that the classification is done correctly. We use photometry and spectroscopy to classify low-amplitude variables in a 246deg^2^ part of the Akerlof et al. (2000, Cat. J/AJ/119/1901) field. Akerlof and Collaborators found that 38% of the RR Lyrae stars in their 2000deg^2^ test field were RR1 (type c). This suggests that these RR Lyrae stars belong to an Oosterhoff Type II population, while their period distribution is primarily Oosterhoff Type I. Our observations support their RR0 (type ab) classifications; however, six of the seven stars that they classified as RR1 (type c) are eclipsing binaries. Our classifications are supported by spectroscopic metallicities, line-broadening, and Galactic rotation measurements. Our 246deg^2^ field contains 16 RR Lyrae stars that are brighter than m_R_=14.5; only four of these are RR1 (type c). This corresponds to an Oosterhoff Type I population in agreement with the period distribution.

Cone search capability for table J/AJ/139/2014/table1 (ROTSE1 RR Lyrae variables that are identified in the GCVS)

Cone search capability for table J/AJ/139/2014/newVar (ROTSE1 RR Lyrae variables not identified in the GCVS, with spectroscopic results)

Identifier
DOI http://doi.org/10.26093/cds/vizier.51392014
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/139/2014
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/139/2014
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/139/2014
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/139/2014
Provenance
Creator Kinman T.D.; Brown W.R.
Publisher CDS
Publication Year 2012
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy