J/AJ/129/2856 Variable stars in NGC 6791 (Mochejska+, 2005)
Planets in stellar clusters extensive search.
III. A search for transiting planets in the metal-rich open cluster NGC 6791.
Mochejska B.J., Stanek K.Z., Sasselov D.D., Szentgyorgyi A.H., Bakos G.A.,
Hradecky V., Devor J., Marrone D.P., Winn J.N., Zaldarriaga M.
<Astron. J., 129, 2856-2868 (2005)>
=2005AJ....129.2856M 2005AJ....129.2856M
ADC_Keywords: Stars, variable ; Binaries, eclipsing
Keywords: binaries: eclipsing - novae, cataclysmic variables -
planetary systems - stars: variables: other
Abstract:
We have undertaken a long-term project, Planets in Stellar Clusters
Extensive Search (PISCES), to search for transiting planets in open
clusters. In this paper we present the results for NGC 6791, a very
old, populous, metal-rich cluster. We have monitored the cluster for
over 300hr, spread over 84 nights. We have not detected any good
transiting planet candidates. Given the photometric precision and
temporal coverage of our observations and the current best estimates
for the frequency and radii of short-period planets, the expected
number of detectable transiting planets in our sample is 1.5. We have
discovered 14 new variable stars in the cluster, most of which are
eclipsing binaries, and present high-precision light curves spanning 2
years for these new variables and also the previously known variables.
Description:
The data analyzed in this paper were obtained with the Fred Lawrence
Whipple Observatory (FLWO) 1.2m telescope using the 4Shooter CCD
mosaic with four thinned, backside-illuminated AR-coated Loral
2048x2048 CCDs. The data were collected during 84 nights, from 2001
July 9 to 2003 July 10. A total of 1118x900s R-band and 233x450s
V-band exposures were obtained. The V-band data set was supplemented
with 93x450s exposures collected between 1998 Sep. 19 and 1999 Nov. 5
(previously analyzed by Mochejska et al., 2003AJ....125.3175M 2003AJ....125.3175M).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 60 46 Eclipsing binaries in NGC 6791
table5.dat 60 40 Other periodic variables in NGC 6791
table6.dat 60 16 Miscellaneous variables in NGC 6791
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See also:
J/AJ/123/3460 : Low-amplitude variables in NGC 6791 (Mochejska+, 2002)
J/A+AS/114/1 : CCD UBVI photometry of NGC 6791 (Kaluzny+, 1995)
J/AJ/108/585 : UBVI photometry of NGC 6791 (Montgomery+, 1994)
J/MNRAS/243/492 : BV Photometry of NGC 6791. (Kaluzny 1990)
J/PASP/115/413 : A star catalog for the open cluster NGC 6791 (Stetson+ 2003)
Byte-by-byte Description of file: table4.dat table5.dat table6.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- ID Source identification (1)
6- 7 I2 h RAh Hour of Right Ascension (J2000)
9- 10 I2 min RAm Minute of Right Ascension (J2000)
12- 15 F4.1 s RAs Second of Right Ascension (J2000)
16 A1 --- DE- Sign of the Declination (J2000)
17- 18 I2 deg DEd Degree of Declination (J2000)
20- 21 I2 arcmin DEm Arcminute of Declination (J2000)
23- 26 F4.1 arcsec DEs Arcsecond of Declination (J2000)
28- 34 F7.4 d Per ? Period (except in table6.dat)
36- 41 F6.3 mag Rmag ?=99.999 R band magnitude (2)
43- 48 F6.3 mag Vmag ? V band magnitude (2)
50- 54 F5.3 mag AR The R band amplitude
56- 60 F5.3 mag AV ? The V band amplitude
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Note (1): Cl* NGC 6791 KR VNN and Cl* NGC 6791 KU BNN in Simbad.
Note (2): Maximum magnitude in table4.dat and table6.dat.
Mean magnitude in table5.dat.
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History:
From electronic version of the journal
References:
Mochejska et al., Paper I 2002AJ....123.3460M 2002AJ....123.3460M, Cat. J/AJ/123/3460
Mochejska et al., Paper II 2004AJ....128..312M 2004AJ....128..312M
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 03-Mar-2006