Physical parameters of three field RR Lyrae stars

A. Arellano Ferro; J. H. Pena; R. Figuera Jaimes

Physical parameters of three field RR Lyrae stars

A. Arellano Ferro^*, J. H. Pena, R. Figuera Jaimes

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	53-62
Number of pages	10
Journal	Revista Mexicana de Astronomía y Astrofísica
Volume	49
Issue number	1
Publication status	Published - Apr 2013

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

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Jaimes_2013_RMAA_Physical
© 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/
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Cite this

@article{1bccae2e8b4a407a912ca98b9b7a5f3a,

title = "Physical parameters of three field RR Lyrae stars",

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.",

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",

author = "Ferro, {A. Arellano} and Pena, {J. H.} and Jaimes, {R. Figuera}",

note = "This work was partially supported by DGAPA–Universidad Nacional Autonoma de Mexico through project IN104612.",

year = "2013",

month = apr,

language = "English",

volume = "49",

pages = "53--62",

journal = "Revista Mexicana de Astronom{\'i}a y Astrof{\'i}sica",

issn = "0185-1101",

publisher = "Universidad Nacional Autonoma de Mexico",

number = "1",

}

TY - JOUR

T1 - Physical parameters of three field RR Lyrae stars

AU - Ferro, A. Arellano

AU - Pena, J. H.

AU - Jaimes, R. Figuera

N1 - This work was partially supported by DGAPA–Universidad Nacional Autonoma de Mexico through project IN104612.

PY - 2013/4

Y1 - 2013/4

N2 - 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.

AB - 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.

KW - Stars: variables: RR Lyrae

KW - Techniques: photometry

KW - Large-magellanic-cloud

KW - SX phoenicis stars

KW - TU ursae majoris

KW - NGC 5024 M53

KW - CCD photometry

KW - Fourier decomposition

KW - Nonradial pulsations

KW - Frequency-analysis

KW - Variable-stars

KW - Distance-scale

UR - http://www.scielo.org.mx/scielo.php?pid=S0185-11012013000100006&script=sci_arttext&tlng=pt

M3 - Article

SN - 0185-1101

VL - 49

SP - 53

EP - 62

JO - Revista Mexicana de Astronomía y Astrofísica

JF - Revista Mexicana de Astronomía y Astrofísica

IS - 1

ER -

Physical parameters of three field RR Lyrae stars

Abstract

Keywords

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