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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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file tables.dat 111 127 EBs in fields 1-4 of the Andromeda galaxy
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
Bytes Format Units Label Explanations
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
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)
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
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