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Physical parameters of three field RR Lyrae stars

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Jaimes_2013_RMAA_Physical.pdf (569.3Kb)
Date
04/2013
Author
Ferro, A. Arellano
Pena, J. H.
Jaimes, R. Figuera
Keywords
Stars: variables: RR Lyrae
Techniques: photometry
Large-magellanic-cloud
SX phoenicis stars
TU ursae majoris
NGC 5024 M53
CCD photometry
Fourier decomposition
Nonradial pulsations
Frequency-analysis
Variable-stars
Distance-scale
QB Astronomy
Metadata
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Abstract
Stromgren uvby - beta photometry of the stars classified as RR Lyrae stars RU Piscium, SS Piscium and TU Ursae Majoris has been used to estimate their iron abundance, temperature, gravity and absolute magnitude. The stability of the pulsating period is discussed. The nature of SS Psc as a RRc or a HADS is addressed. The reddening of each star is estimated from the Stromgren colour indices and reddening sky maps. The results of three approaches to the determination of [Fe/H], T-eff and log(g) are discussed: Fourier light curve decomposition, the Preston Delta S index and the theoretical grids on the (b - y)(o) - c(10) plane.
Citation
Ferro , A A , Pena , J H & Jaimes , R F 2013 , ' Physical parameters of three field RR Lyrae stars ' Revista mexicana de astronomia y astrofisica , vol 49 , no. 1 , pp. 53-62 .
Publication
Revista mexicana de astronomia y astrofisica
Status
Peer reviewed
ISSN
0185-1101
Type
Journal article
Rights
© Copyright 2013: Instituto de Astronomía, Universidad Nacional Autónoma de México. All contents of this journal, except where noted, are licensed under a Creative Commons license: http://creativecommons.org/licenses/by-nc/3.0/
Description
This work was partially supported by DGAPA–Universidad Nacional Autonoma de Mexico through project IN104612.
Collections
  • University of St Andrews Research
  • Physics & Astronomy Research
URI
http://hdl.handle.net/10023/5552
http://www.scielo.org.mx/scielo.php?pid=S0185-11012013000100006&script=sci_arttext&tlng=pt

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