J/MNRAS/362/1006 Eclipsing binaries in eastern spiral arm of M31 (Todd+, 2005)
A survey of eclipsing binary stars in the eastern spiral arm of M31.
Todd I., Pollacco D., Skillen I., Bramich D.M., Bell S., Augusteijn T.
<Mon. Not. R. Astron. Soc., 362, 1006-1014 (2005)>
=2005MNRAS.362.1006T 2005MNRAS.362.1006T
ADC_Keywords: Galaxies, nearby ; Binaries, eclipsing ; Photometry
Keywords: binaries: eclipsing - galaxies: individual: M31 - Local Group
Abstract:
The results of an archival survey are presented using B, V-band
imaging of the eastern spiral arm of M31. Focusing on the eclipsing
binary star population, a matched-filter technique has been used to
identify 280 binary systems. Of these, 127 systems (98 of which are
newly discovered) have sufficient phase coverage to allow accurate
orbital periods to be determined. At least nine of these binaries are
detached systems, which could, in principle, be used for distance
determination. The light curves of the detached and other selected
systems are presented along with a discussion of some of the more
interesting binaries. The impact of unresolved stellar blends on these
light curves is considered.
Description:
The data forming the basis of this study were obtained over the period
2000-2003 by scheduled observers on the 2.5-m Isaac Newton Telescope
(INT) on the Island of La Palma in the Canary Islands. These data were
retrieved from the Isaac Newton Group of Telescopes (ING) Archive
located at CASU, University of Cambridge
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 111 127 EBs in fields 1-4 of the Andromeda galaxy
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See also:
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/AJ/129/2663 : B phot. of M31 variable star candidates (Williams+, 2005)
J/ApJS/118/177 : JHK photometry of M31 spiral arm (Kodaira+, 1998)
J/A+AS/92/625 : Ionized nebulae in M31 (Walterbos+ 1992)
Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- [TPS2005] Sequential number
12- 13 I2 h RAh Right ascension (J2000)
15- 16 I2 min RAm Right ascension (J2000)
18- 23 F6.3 s RAs Right ascension (J2000)
25 A1 --- DE- Declination sign (J2000)
26- 27 I2 deg DEd Declination (J2000)
29- 30 I2 arcmin DEm Declination (J2000)
32- 37 F6.3 arcsec DEs Declination (J2000)
39- 46 F8.5 d Per Period
48- 53 F6.4 d Per2 ? Second period
55- 60 F6.4 d Per3 ? Third period
63- 67 F5.2 mag Bmax Maximum B magnitude
69- 73 F5.2 mag Vmax ?=- Maximum V magnitude
75- 79 F5.2 --- Dp ?=- Depth of the primary eclipse in ADU/s
81- 84 F4.1 --- Ds ?=- Depth of the secondary eclipse in ADU/s
86 A1 --- n_Dp [abc] Note on Depth (1)
88-111 A24 --- Notes Notes
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Note (1): Flags as follows:
a = Multiple aliases within ±0.05d of the quoted period
b = Eclipse has no bottom, therefore flux depth unreliable
c = From Walterbos & Braun (1992, Cat. J/A+AS/92/625)
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History:
* 20-Apr-2006: Original version, from electronic version of journal
* 05-May-2008: Coordinates of f3BEB670 corrected (from CDS team)
(End) Patricia Vannier [CDS] 20-Apr-2006