Abstract
view Abstract Citations (41) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Photometry of the Variable Stars in the Globular Cluster NGC 6712 Sandage, Allan ; Smith, Lewis L. ; Norton, Robert H. Abstract Photometry in B and V is reported for ten RR Lyrae variables, four long-period semiregular Variables, and two variables of unknown type in and near NGC 6712. Seven of the RR Lyrae stars are Bailey-type a, b variables, while three are of type c. The mean period of the a, b stars is P ,6 = 0.55 days. This value and the similarity of the group characteristics of the variables with those in M3 identify NGC 6712 as an Oosterhoff type I cluster, contrary to an expectation that (6712) < F(M3). The variables in 6712 therefore provide no solution to the longstanding problem of the origin of the field variables of low AS and large amplitude in the period range of 0d.30A)d.44. Variables of this type have not yet been found in globular clusters. The three long-period variables that are considered to be members have absolute visual magnitudes at maximum of -3.1, -3.1, and -2.3, respectively, for V2(P = 105d), V8(P = 117d), and V10(F = 174d). Publication: The Astrophysical Journal Pub Date: June 1966 DOI: 10.1086/148687 Bibcode: 1966ApJ...144..894S full text sources ADS | data products SIMBAD (21)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
