J/ApJ/675/1233 gri photometry in M37 (NGC 2099) (Hartman+, 2008)
Deep MMT transit survey of the open cluster M37.
I. Observations and cluster parameters.
Hartman J.D., Gaudi B.S., Holman M.J., McLeod B.A., Stanek K.Z.,
Barranco J.A., Pinsonneault M.H., Meibom S., Kalirai J.S.
<Astrophys. J., 675, 1233-1253 (2008)>
=2008ApJ...675.1233H 2008ApJ...675.1233H
ADC_Keywords: Clusters, open ; Photometry, ugriz
Keywords: open clusters and associations: individual (M37) - planetary systems -
stars: fundamental parameters -
stars: luminosity function, mass function - surveys
Abstract:
We have conducted a deep (15~<r~<23 ), 20 night survey for transiting
planets in the intermediate-age open cluster M37 (NGC 2099) using the
Megacam wide-field mosaic CCD camera on the 6.5m MMT. In this paper
we describe the observations and data reduction procedures for the
survey and analyze the stellar content and dynamical state of the
cluster. By combining high-resolution spectroscopy with existing
BVICK_s and new gri color-magnitude diagrams, we determine the
fundamental cluster parameters: t=485±28Myr, without overshooting
(t=550±30Myr, with overshooting), E(B-V)=0.227±0.038,
(m-M)V=11.57±0.13, and [M/H]=+0.045±0.044, which are in good
agreement with, although more precise than, previous measurements. We
determine the mass function down to 0.3M☉ and use this to
estimate the total cluster mass of 3640±170M☉.
Description:
The photometric observations were obtained over 24 nights (8 of which
were half-nights) between 2005 December 21 and 2006 January 21.
We obtained a total of ∼5000 images using the Megacam instrument
on the MMT.
The color transformations are applied to the full star list to yield a
final list with magnitudes on the Sloan system.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 69 16483 Photometric catalog of M37
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See also:
J/A+A/381/65 : BVI photometry of NGC 2099 (Nilakshi+, 2002)
J/A+A/412/721 : CCD Δa-photometry of 5 open clusters (Paunzen+, 2003)
J/A+A/483/253 : BV photometry of NGC 2099 variables (Messina+, 2008)
J/ApJ/675/1254 : M37 variable stars (Hartman+, 2008)
J/ApJ/691/342 : griBVI photometry in M37 (Hartman+, 2009)
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- ID Object identification number (1)
8- 9 I2 h RAh Hour of Right Ascension (J2000)
11- 12 I2 min RAm Minute of Right Ascension (J2000)
14- 18 F5.2 s RAs Second of Right Ascension (J2000)
20 A1 --- DE- Sign of the Declination (J2000)
21- 22 I2 deg DEd Degree of Declination (J2000)
24- 25 I2 arcmin DEm Arcminute of Declination (J2000)
27- 30 F4.1 arcsec DEs Arcsecond of Declination (J2000)
32- 37 F6.3 mag gmag The g band magnitude
39- 44 F6.3 mag rmag The r band magnitude
46- 51 F6.3 mag imag The i band magnitude
53- 57 F5.3 mag e_gmag The 1σ error in gmag
59- 63 F5.3 mag e_rmag The 1σ error in rmag
65- 69 F5.3 mag e_imag The 1σ error in imag
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Note (1): The first two digits in the ID give the mosaic chip number on
which the star was detected. <Cl* NGC 2099 HGH NNNNNN> in Simbad.
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History:
From electronic version of the journal
References:
Hartman et al., Paper II 2008ApJ...675.1254H 2008ApJ...675.1254H, Cat. J/ApJ/675/1254
Hartman et al., Paper III 2009ApJ...691..342H 2009ApJ...691..342H, Cat. J/ApJ/691/342
Hartman et al., Paper IV 2009ApJ...695..336H 2009ApJ...695..336H
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Jul-2010