J/AJ/138/184 RR Lyrae variables in 2 fields in M31 spheroid (Sarajedini+, 2009)
RR Lyrae variables in two fields in the spheroid of M31.
Sarajedini A., Mancone C.L., Lauer T.R., Dressler A., Freedman W.,
Trager S.C., Grillmair C., Mighell K.J.
<Astron. J., 138, 184-195 (2009)>
=2009AJ....138..184S 2009AJ....138..184S
ADC_Keywords: Galaxies, nearby ; Stars, variable ; Photometry, HST
Keywords: galaxies: individual (M31) - galaxies: spiral -
galaxies: stellar content - stars: variables: other
Abstract:
We present Hubble Space Telescope observations taken with the Advanced
Camera for Surveys Wide Field Channel of two fields near M32 - between
4 and 6kpc from the center of M31. The data cover a time baseline
sufficient for the identification and characterization of 681 RR Lyrae
variables of which 555 are ab-type and 126 are c-type.
Description:
The observations used in the present study were obtained with the
HST/ACS in parallel with the imagery conducted by program GO-10572.
The present images are the parallel observations associated with each
pointing obtained with the ACS Wide Field Channel (WFC) using the
F606W (∼V) filter.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 56 365 Field 1 Variable Stars (No 1 to 365)
table5.dat 63 387 Field 2 Variable Stars (No 366 to 752)
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Byte-by-byte Description of file: table4.dat table5.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Running identification number,
<[SML2009] NNN> in Simbad
5 I1 h RAh Hour of Right Ascension (J2000)
7- 8 I2 min RAm Minute of Right Ascension (J2000)
10- 14 F5.2 s RAs Second of Right Ascension (J2000)
15 A1 --- DE- Sign of Declination (J2000)
16- 17 I2 deg DEd Degree of Declination (J2000)
19- 20 I2 arcmin DEm Arcminute of Declination (J2000)
22- 25 F4.1 arcsec DEs Arcsecond of Declination (J2000)
27- 31 F5.3 d Per Period
33- 37 F5.3 mag Vamp F606W band amplitude
39- 44 F6.3 mag F606W Mean intensity-weighted HST/ACS F606W magnitude
46- 63 A18 --- VType Variable type (Eclipsing, Contact, RRab, RRc,
long period, Anomalous Cepheid?)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 15-Nov-2011