Access to Astronomical Catalogues

← Click to display the menu
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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table6.dat 69 16483 Photometric catalog of M37
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
Bytes Format Units Label Explanations
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
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.
History: From electronic version of the journal References: Hartman et al., Paper II 2008ApJ...675.1254H, Cat. J/ApJ/675/1254 Hartman et al., Paper III 2009ApJ...691..342H, Cat. J/ApJ/691/342 Hartman et al., Paper IV 2009ApJ...695..336H
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Jul-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact