J/ApJ/674/L81 Variable stars in dwarf galaxy CVn I (Kuehn+, 2008)
Variable stars in the newly discovered Milky Way dwarf spheroidal satellite
Canes Venatici I.
Kuehn C., Kinemuchi K., Ripepi V., Clementini G., Dall'Ora M.,
Di Fabrizio L., Rodgers C.T., Greco C., Marconi M., Musella I., Smith H.A.,
Catelan M., Beers T.C., Pritzl B.J.
<Astrophys. J., 674, L81-L84 (2008)>
=2008ApJ...674L..81K 2008ApJ...674L..81K
ADC_Keywords: Galaxies, nearby ; Stars, variable ; Photometry
Keywords: galaxies: distances and redshifts - galaxies: dwarf -
galaxies: individual (Canes Venatici I) - stars: horizontal-branch -
stars: variables: other - techniques: photometric
Abstract:
We have identified 23 RR Lyrae stars and three possible anomalous
Cepheids (ACs) among 84 candidate variables in the recently discovered
Canes Venatici I (CVn I) dwarf spheroidal galaxy.
Description:
BV and Cousins I time-series photometry of CVn I was obtained in 2006
May and 2007 April and May at the 2.3m Wyoming Infrared Observatory
telescope (WIRO), using the prime focus CCD camera.
Additional BVI photometry was obtained at the 4.2m William Herschel
Telescope (WHT) in 2007 April using the Prime Focus Imaging Camera.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 78 26 Identification and properties of the confirmed
variable stars
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Vnum Star name, [KKR2008] VNN in Simbad
5- 8 I4 --- Seq Stellar identification number,
[KKR2008] NNNN in Simbad
10- 11 I2 h RAh Hour of Right Ascension (J2000)
13- 14 I2 min RAm Minute of Right Ascension (J2000)
16- 20 F5.2 s RAs Second of Right Ascension (J2000)
22 A1 --- DE- Sign of Declination (J2000)
23- 24 I2 deg DEd Degree of Declination (J2000)
26- 27 I2 arcmin DEm Arcminute of Declination (J2000)
29- 33 F5.2 arcsec DEs Arcsecond of Declination (J2000)
35- 38 A4 --- Type Variability type (1)
40- 43 F4.2 d Per Period
44- 45 A2 --- u_Per [: ] Indicates an uncertain in Per
47- 54 F8.3 d Ep(max) Epoch of maximum (JD-2450000)
56- 61 F6.3 mag <Vmag> Intensity-averaged mean V band magnitude
63- 67 F5.2 mag <Bmag> Intensity-averaged mean B band magnitude
69- 73 F5.3 mag AV V band extinction
75- 78 F4.2 mag AB B band extinction
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Note (1): Variable types are:
* RRab = fundamental mode RR Lyr star
* RRc = overtone RR Lyr star
* AC = possible Anomalous Cepheids (brighter variables about
1.5-2mag above the galaxy's horizontal branch)
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History:
From electronic version of the journal
References:
Dall'Ora et al. Paper I : Bootes I 2006ApJ...653L.109D 2006ApJ...653L.109D
Greco et al. Paper III: CVn II 2008ApJ...675L..73G 2008ApJ...675L..73G
Musella et al. Paper IV : Coma 2009ApJ...695L..83M 2009ApJ...695L..83M
Moretti et al. Paper V : Leo IV 2009ApJ...699L.125M 2009ApJ...699L.125M
Dall'Ora et al. Paper VI : UMa II 2012ApJ...752...42D 2012ApJ...752...42D Cat. J/ApJ/752/42
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 09-Apr-2010