Abstract
view Abstract Citations (8) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Variable Stars in the Globular Cluster NGC 6139 Hazen, Martha L. Abstract Photometry is presented for ten new variables within the tidal radius of NGC 6139 and for six new variables outside the tidal radius. Of the former, five have periods indicating they are probable RR Lyrae stars; these variables seem likely to be members of the cluster. An apparent visual distance modulus for NGC 6139 of 17.2 + or - 0.4 mag is derived. The RR Lyrae stars in the cluster show period shifts appropriate to a cluster of considerably low metallicity than has been observed for NGC 6139. Publication: The Astronomical Journal Pub Date: January 1991 DOI: 10.1086/115675 Bibcode: 1991AJ....101..170H Keywords: Blue Stars; Giant Stars; Globular Clusters; Stellar Spectrophotometry; Variable Stars; Light Curve; Metallicity; Stellar Magnitude; Astronomy; CLUSTERS: GLOBULAR; STARS: VARIABLES; STARS: RR LYRAE full text sources ADS | data products SIMBAD (17)
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