Other
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..294c&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 685, p. 294-300.
Other
31
Blue Stars, Giant Stars, Globular Clusters, Stellar Spectrophotometry, Variable Stars, Charge Coupled Devices, Color-Magnitude Diagram, Light Curve, Radial Velocity, Stellar Cores
Scientific paper
BV CCD photometry for the RR Lyrae variable V9 in the globular cluster 47 Tucanae is presented. Radial-velocity measurements indicate V9 is a cluster member while two other candidates, V12 (HV 814) and UX Tuc (HV 809) are not. A color-magnitude diagram is constructed from a subset of the 300 short-exposure CCD frames, showing V9 is unusually bright and hot relative to the red horizontal branch, and has an abnormally long pulsation period for its pulsational amplitude, both of which indicate it is highly evolved. There is also a suggestion of a 'spike' in the light curve near theta of about 0.08, which could be caused by the emergence of the echo of the prior minimum-radius pressure wave bouncing off the helium core. The photometry will be utilized in a subsequent Baade-Wesselink analysis.
Carney Bruce W.
Storm Jesper
Williams Christina
No associations
LandOfFree
BV photometry of V9, the only RR Lyrae variable in the globular cluster 47 Tucanae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with BV photometry of V9, the only RR Lyrae variable in the globular cluster 47 Tucanae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and BV photometry of V9, the only RR Lyrae variable in the globular cluster 47 Tucanae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1706632