J/MNRAS/419/342 SX Phe stars in globular clusters (Cohen+, 2012)
SX Phoenicis period-luminosity relations and the blue straggler connection.
Cohen R.E., Sarajedini A.
<Mon. Not. R. Astron. Soc., 419, 342-357 (2012)>
=2012MNRAS.419..342C 2012MNRAS.419..342C
ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry
Keywords: stars: variables: δ Scuti - globular clusters: general -
distance scale
Abstract:
This study is aimed at investigating the period-luminosity relation
of SX Phoenicis (SX Phe) pulsators in Galactic globular clusters
(GGCs) and Local Group dwarf galaxies. We verify isochrone-fitting
distances of 46 GGCs by fitting their main sequences to a carefully
chosen set of nearby, unevolved subdwarfs.
Description:
To compile a current list of SX Phe in GGCs, we began with the
catalogue of Rodriguez & Lopez-Gonzalez (2000, Cat. J/A+A/359/597),
which was updated by Santolamazza et al. (2001ApJ...554.1124S 2001ApJ...554.1124S). We
then added to this list all SX Phe in GGCs found in the literature
since the publication of those studies. This more than doubled the
number of SX Phe in GGCs, from 117 listed by Santolamazza et al.
(2001ApJ...554.1124S 2001ApJ...554.1124S) to 263 currently known. For the sake of
homogeneity, we have excluded the small number of SX Phe in E 3,
IC 4499 and Ruprecht 106 from our analysis because isochrone fits to
those clusters were not performed by D10. In addition, we have
excluded all stars from the original Rodriguez & Lopez-Gonzalez (2000,
Cat. J/A+A/359/597) catalogue which were also excluded by Santolamazza
et al. (2001ApJ...554.1124S 2001ApJ...554.1124S), as well as all SX Phe in NGC 3201 and
4372 due to high differential reddening (Gerashchenko, Kadla &
Malakhova, 1999ARep...43...20G 1999ARep...43...20G; Piersimoni, Bono & Ripepi,
2002AJ....124.1528P 2002AJ....124.1528P).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 49 263 SX Phe in Galactic globular clusters
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See also:
J/AJ/106/2493 : SX Phe (Kim+, 1993)
J/A+AS/100/571 : uvby-beta photometry of SX Phe stars (Rodriguez+ 1993)
J/AJ/110/1186 : SX Phe stars in NGC 5053 (Nemec+ 1995)
J/ApJ/685/947 : SX Phe stars in Fornax. II. (Poretti+, 2008)
J/A+A/359/597 : SX Phe stars in globular clusters (Rodriguez,+ 2000)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Cluster Cluster name
9- 16 A8 --- Star Star name
18- 23 F6.3 [d] LogP Period
25- 28 F4.2 mag AV ? Absorption in V band
30- 34 F5.2 mag <Vmag> ? Average V magnitude
36- 40 F5.2 mag <B-V> ? Average B-V colour index
42- 45 F4.2 mag <V-I> ? Average V-I colour index
47- 49 A3 --- Mode Pulsation mode (1)
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Note (1): Pulsation mode flag as follows:
dr = double radial modes
nr = non-radial modes
fnr = fundamental and non-radial modes
mp = multiperiodic
u = unknown
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 25-Jun-2012