J/AJ/129/2232 Variable stars in And I and And III (Pritzl+, 2005)
The dwarf spheroidal companions to M31:
variable stars in Andromeda I and Andromeda III.
Pritzl B.J., Armandroff T.E., Jacoby G.H., Da Costa G.S.
<Astron. J., 129, 2232-2256 (2005)>
=2005AJ....129.2232P 2005AJ....129.2232P
ADC_Keywords: Stars, variable ; Photometry, UBV
Keywords: Cepheids - galaxies: individual (Andromeda I, Andromeda III) -
Local Group - stars: variables: other
Abstract:
We present the results of variable star searches of the M31 dwarf
spheroidal (dSph) companions Andromeda I and Andromeda III using the
Hubble Space Telescope. A total of 100 variable stars were found in
And I, while 56 were found in And III. One variable found in And I and
another in And III may be type II Cepheids. In addition to this
variable in And III, another four variables are anomalous Cepheids
(ACs). So far, no definite ACs have been discovered in And I.
Description:
Observations of And I were taken by the HST WFPC2 as part of GO
Program 5325 on 1994 August 11 and 16, using the same orientation.
For And III, the observations were taken for GO Program 7500 on 1999
February 22 and 26 with the same orientation.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 101 100 Light Curve Properties for And I
table3.dat 96 56 Light Curve Properties for And III
table4.dat 39 1188 B Photometry of the Variable Stars in And I
table5.dat 39 693 V Photometry of the Variable Stars in And I
table6.dat 39 896 B Photometry of the Variable Stars in And III
table7.dat 39 448 V Photometry of the Variable Stars in And III
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See also:
J/AJ/124/1464 : Variable stars in Andromeda VI (Pritzl+, 2002)
J/AJ/127/318 : BV photometry of Andromeda II variables (Pritzl+, 2004)
J/A+A/402/113 : (RI)c photometry of variables in M31 (Joshi+, 2003)
J/A+A/421/509 : AGAPE catalogue of M31 variables (Ansari+, 2004)
J/MNRAS/351/1071 : POINT-AGAPE Survey. M31 variables (An+, 2004)
J/ApJS/154/623 : M31 Long Period Variables : Photometry (Mould+, 2004)
Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Galaxy Galaxy name (And I or And III)
9- 12 A4 --- [PAJ2005] Variable identification number in
the galaxy (G1)
14 I1 h RAh Hour of Right Ascension (J2000)
16- 17 I2 min RAm Minute of Right Ascension (J2000)
19- 23 F5.2 s RAs Second of Right Ascension (J2000)
24 A1 --- DE- Sign of Declination (J2000)
25- 26 I2 deg DEd Degree of Declination (J2000)
28- 29 I2 arcmin DEm Arcminute of Declination (J2000)
31- 34 F4.1 arcsec DEs Arcsecond of Declination (J2000)
36- 40 F5.3 d Period ? Period
42- 47 F6.3 mag <Vmag> ? Mean intensity-weighted V band magnitude
49- 54 F6.3 mag <Bmag> ? Mean intensity-weighted B band magnitude
56- 60 F5.3 mag B-V ? The magnitude weighted (B-V) color
62- 65 F4.2 mag AV ? The V band amplitude
67- 70 F4.2 mag AB ? The B band amplitude
72- 76 F5.2 --- DlogP ? Period shift ΔlogP
78- 82 F5.2 [Sun] [Fe/H] ? RR Lyrae [Fe/H] abundance
84- 85 A2 --- VarType [abc ] Cepheid variable type
86 A1 --- --- [;]
88-101 A14 --- Rem Remarks (other variable type and/or Drake
period) (1)
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Note (1): The classifications are:
AC = anomalous Cepheids
RRL = RR Lyrae
P2C = type II Cepheid
The periods referenced as Drake derive from the first year Ph.D.
project (1996) of A. Drake with supervisor G.S. Da Costa. The
published reference to this data is Da Costa et al. (1997, in 23rd
IAU Meeting, Joint Discussion 2, Dwarf Galaxies: Probes for Galaxy
Formation and Evolution, ed. S. Takahira (Kyoto: IAU), 29).
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Byte-by-byte Description of file: table[4567].dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Galaxy Galaxy name (And I or And III)
9- 12 A4 --- [PAJ2005] Variable identification number in
the galaxy (G1)
14- 24 F11.3 d HJD Heliocentric Julian Date
26 A1 --- Band [BV] Band of the magnitude
28- 33 F6.3 mag mag ?=0.000 B or V band magnitude
35- 39 F5.3 mag e_mag ?=0.000 rms uncertainty on mag
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Globla notes:
Note (G1): Star designations:
tables 2, 4 and 5 : [PAJ2005] And I VNNN in Simbad
tables 3, 6 and 7 : [PAJ2005] And III VNN in Simbad
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 06-Jun-2005