J/ApJ/691/342 griBVI photometry in M37 (Hartman+, 2009)
Deep MMT transit survey of the open cluster M37.
III. Stellar rotation at 550 Myr.
Hartman J.D., Gaudi B.S., Pinsonneault M.H., Stanek K.Z., Holman M.J.,
McLeod B.A., Meibom S., Barranco J.A., Kalirai J.S.
<Astrophys. J., 691, 342-364 (2009)>
=2009ApJ...691..342H 2009ApJ...691..342H
ADC_Keywords: Clusters, open ; Stars, dwarfs ; Photometry
Keywords: open clusters and associations: individual (M37) -
stars: low-mass, brown dwarfs - stars: rotation - stars: spots -
stars: variables: other
Abstract:
In the course of conducting a deep (14.5≲r≲23), 20 night
survey for transiting planets in the rich ∼550Myr old open cluster
M37, we have measured the rotation periods of 575 stars, which lie
near the cluster main sequence, with masses
0.2M☉≲M≲1.3M☉. This is the largest sample of rotation
periods for a cluster older than 500Myr. Using this rich sample we
investigate a number of relations between rotation period, color, and
the amplitude of photometric variability.
Description:
The observations and data reduction procedure were described in detail
in Papers I (J/ApJ/675/1233) and II (J/ApJ/675/1254).
The primary time-series photometric observations were done using the r
filter and consist of ∼4000 high-quality images obtained over 24
nights (including eight half-nights) between 2005 December 21 and 2006
January 21.
The spectra were obtained on four separate nights between 2007
February 23 and 2007 March 12.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 126 575 Candidate cluster members with measured rotation
periods: coordinates and periods
table2.dat 98 575 Candidate cluster members with measured rotation
periods: magnitudes
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See also:
J/ApJ/675/1233 : gri photometry in M37 (NGC 2099) (Hartman+, 2008)
J/ApJ/675/1254 : M37 variable stars (Hartman+, 2008)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID Member identification number,
<Cl* NGC 2099 HGH VNNNN> in Simbad
6- 7 I2 h RAh Hour of Right Ascension (J2000)
9- 10 I2 min RAm Minute of Right Ascension (J2000)
12- 16 F5.2 s RAs Second of Right Ascension (J2000)
18 A1 --- DE- Sign of the Declination (J2000)
19- 20 I2 deg DEd Degree of Declination (J2000)
22- 23 I2 arcmin DEm Arcminute of Declination (J2000)
25- 28 F4.1 arcsec DEs Arcsecond of Declination (J2000)
30- 31 I2 --- Chip Chip identification
33- 43 F11.8 d Per Period from Paper II (J/ApJ/675/1254)
45- 54 F10.8 d e_Per The 1σ error in Per
56- 66 F11.8 d Per1 Multi-harmonic AoV algorithm N=1 period
68- 77 F10.8 d e_Per1 The 1σ error in Per1
79- 89 F11.8 d Per2 Multi-harmonic AoV algorithm N=2 period
91-100 F10.8 d e_Per2 The 1σ error in Per2
102-112 F11.8 d Per3 Multi-harmonic AoV algorithm N=3 period
114-124 F11.8 d e_Per3 The 1σ error in Per3
126 I1 --- C [0/1] Clean flag (1)
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Note (1): Set to either 1 or 0. Stars with a value of 1 were included in
the clean sample of stars in Section 5.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID Member identification number,
Cl* NGC 2099 HGH VNNNN in Simbad
6- 11 F6.3 mag Flux averaged r band magnitude
13- 17 F5.3 mag e_ Root-mean-square of rmag
19- 24 F6.3 mag gmag Paper I (J/ApJ/675/1233) catalog
g band magnitude
26- 31 F6.3 mag rmag Paper I (J/ApJ/675/1233) catalog
r band magnitude
33- 38 F6.3 mag imag Paper I (J/ApJ/675/1233) catalog
i band magnitude
40- 45 F6.3 mag Bmag Kalirai et al. (2001AJ....122.3239K 2001AJ....122.3239K)
B band magnitude
47- 52 F6.3 mag Vmag Kalirai et al. (2001AJ....122.3239K 2001AJ....122.3239K)
V band magnitude
54- 59 F6.3 mag Imag I band magnitude transformed from r and i bands
61- 65 F5.3 mag rAmp1 Multi-harmonic AoV N=1, peak-to-peak,
r band amplitude
67- 72 F6.3 mag rAmp1m Minimum multi-harmonic AoV N=1, peak-to-peak,
r band amplitude (1)
74- 78 F5.3 mag rAmp2 Multi-harmonic AoV N=2, peak-to-peak,
r band amplitude
80- 85 F6.3 mag rAmp2m Minimum multi-harmonic AoV N=2, peak-to-peak,
r band amplitude (1)
87- 91 F5.3 mag rAmp3 Multi-harmonic AoV N=3, peak-to-peak,
r band amplitude
93- 98 F6.3 mag rAmp3m Minimum multi-harmonic AoV N=3, peak-to-peak,
r band amplitude (1)
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Note (1): That the light curve could have had and still have been detected
as a variable. Entries with no value correspond to light curves that
would be selected as variable even when Ar,N=0.0. The model does not
adequately describe the light curve in these cases.
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History:
From electronic version of the journal
References:
Hartman et al., Paper I 2008ApJ...675.1233H 2008ApJ...675.1233H, Cat. J/ApJ/675/1233
Hartman et al., Paper II 2008ApJ...675.1254H 2008ApJ...675.1254H, Cat. J/ApJ/675/1254
Hartman et al., Paper IV 2009ApJ...695..336H 2009ApJ...695..336H
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 21-Jul-2010