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J/AJ/128/1684         NGC 2264: VRIHα photometry             (Sung+, 2004)

The initial mass function and young brown dwarf candidates in NGC 2264. I. The initial mass function around S Monocerotis. Sung H., Bessell M.S., Chun M.-Y. <Astron. J., 128, 1684-1693 (2004)> =2004AJ....128.1684S
ADC_Keywords: Clusters, open ; Stars, pre-main sequence ; Photometry, VRI ; X-ray sources ; Photometry, CCD Keywords: open clusters and associations: individual (NGC 2264) - stars: low-mass, brown dwarfs - stars: luminosity function, mass function Abstract: The young open cluster NGC 2264 was observed on 2002 January 67 with the CFH12K mosaic CCD on the 3.6m Canada-France-Hawaii Telescope to investigate the shape of the initial mass function (IMF). In order to select the pre-main-sequence (PMS) members more completely, Chandra X-Ray Observatory archival data were retrieved and used for the identification of X-ray-emitting weak-line T Tauri stars. In addition, the (R-I, V-I) diagram was used to exclude background late-type giants, and a statistical approach was applied to estimate the number of contaminating foreground main-sequence stars. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 128 3037 Photometric data table3.dat 94 19 X-Ray sources detected from pwdetect
See also: J/AJ/127/2659 : CHANDRA observations of NGC 2264 (Ramirez+, 2004) J/A+A/345/521 : BVRI photometry of NGC 2264 (Flaccomio+, 1999) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- [SBC2004b] Source identification number 6 I1 h RAh Hour of right ascension (J2000) 8- 9 I2 min RAm Minute of right ascension (J2000) 11- 15 F5.2 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- 33 F6.3 mag Imag The I-band magnitude 35- 36 I2 mmag e_Imag ? The error in Imag in millimagnitudes 38 A1 --- f_Imag [*] Indicates error greater than 0.1mag 40- 45 F6.3 mag R-I ? The (R-I) colour index 47- 48 I2 mmag e_R-I ? The error in R-I in millimagnitudes 50 A1 --- f_R-I [*] Indicates error greater than 0.1mag 52- 57 F6.3 mag V-I ? The (V-I) colour index 59- 60 I2 mmag e_V-I ? The error in V-I in millimagnitudes 62 A1 --- f_V-I [*] Indicates error greater than 0.1mag 65- 70 F6.3 mag R-Ha ? The (R-Hα) colour index 72- 73 I2 mmag e_R-Ha ? The error in R-Ha in millimagnitudes 75 A1 --- f_R-Ha [*] Indicates error greater than 0.1mag 77 I1 --- o_Imag ? Number of observations in Imag 79 I1 --- o_R-I ? Number of observations in R-I 81 I1 --- o_V-I ? Number of observations in V-I 83 I1 --- o_R-Ha ? Number of observations in R-Ha 85 A1 --- Memb Membership code (1) 87- 89 A3 --- Data Data source (2) 91-127 A37 --- Notes Additional notes (3)
Note (1): The membership code is defined as follows: X = Strong X-ray source; x = Weak X-ray source; H = Strong Hα emission star; h = Hα emission candidate; + = Hα emission star with X-ray emission; - = Hα emission candidate with X-ray emission; Q = Early-type star. Note (2): The data source is defined as follows: C = New photometric data obtained at CFHT; S = Data from Sung et al. (1997AJ....114.2644S). Note (3): Additional notes give other identification, with the following abbreviations: SBL = Sung et al. 1997AJ....114.2644S, Cl* NGC 2264 SBL NNNN in Simbad; S = ID used in Tables 4 and 5 of Sung et al. 1997AJ....114.2644S, Cl* NGC 2264 SBL NNNN in Simbad; FX = Flaccomio et al. 2000, Cat. J/A+A/355/651, [FMS2000] XNNN in Simbad; LH = Herbig 1954ApJ...119..483H, Em* LkHA NN in Simbad; O = Ogura 1984PASJ...36..139O, KHA NNN in Simbad.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- PID pwdetect source sequential number 6 I1 h RAh Hour of right ascension (J2000.0) 8- 9 I2 min RAm Minute of right ascension (J2000.0) 11- 15 F5.2 s RAs Second of right ascension (J2000.0) 17 A1 --- DE- Sign of the Declination (J2000) 18 I1 deg DEd Degree of declination (J2000.0) 20- 21 I2 arcmin DEm Arcminute of declination (J2000.0) 23- 26 F4.1 arcsec DEs Arcsecond of declination (J2000.0) 29- 32 F4.2 --- Sig Significance 35- 38 I4 --- [SBC2004b] ? CFHT number 41- 44 I4 --- SBL ? SBL number (Sung et al. 1997AJ....114.2644S, Cl* NGC 2264 SBL NNNN in Simbad) 47- 94 A48 --- Rem Remark
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 19-Apr-2005
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

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