Physics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...155...24g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 155, no. 1, Jan. 1986, p. 24-32. Research supported by the Ministerie van Onde
Physics
1
Hertzsprung-Russell Diagram, Stellar Oscillations, Stellar Spectrophotometry, Variable Stars, Horizontal Branch Stars, Light Curve, Metallicity, Stellar Color, Stellar Evolution, Stellar Physics, Stellar Temperature
Scientific paper
The photometric variations and physical and kinematical properties of HD 47147, a ninth magnitude metal-deficient star, are discussed. The long period (0.79732 days), the small amplitude (0.17 mag in the visual band), and the mean effective temperature of 6160 K of this RR Lyrae pulsating variable can be understood by its location near the red edge of the instability strip. The extreme Population II characteristics of HD 47147 are confirmed by its kinematical properties. The temperature and the relatively high luminosity derived are consistent with both possibilities that HD 47147 is a red horizontal branch star or that it is a suprahorizontal branch star actually evolving redward toward the asymptotic branch. Its low amplitude suggests the possibility that the red edge of the instability strip corresponds to a smooth transition from variable to non-variable stars.
Grenon Michel
Waelkens Christoffel
No associations
LandOfFree
HD 47147 - A small-amplitude extreme metal-poor RRab pulsating variable 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 HD 47147 - A small-amplitude extreme metal-poor RRab pulsating variable, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HD 47147 - A small-amplitude extreme metal-poor RRab pulsating variable will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1843798