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J/A+A/466/137       Westerlund 2 JHKs photometry             (Ascenso+, 2007)

Near-infrared imaging of Galactic massive clusters: Westerlund 2. Ascenso J., Alves J., Beletsky Y., Lago M.T.V.T. <Astron. Astrophys. 466, 137 (2007)> =2007A&A...466..137A
ADC_Keywords: H II regions ; Clusters, open ; Photometry, infrared Keywords: open clusters and associations: individual: Westerlund 2 - stars: pre-main sequence - infrared: stars Description: Photometry for the stars detected with SOFI, NTT in J, H and Ks in the field containing the massive cluster Westerlund 2 (also know as RCW 49) associated with the HII region Gum29. For each star detected in all three bands the table contains the ID, equatorial coordinates, J, H and Ks magnitude and photometric errors. For the stars detected only in Ks or in H and Ks the magnitude and photometric error fields in the absent bands are filled with the values 99.99 and 9.999 respectively. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file w2phot.dat 65 5727 Positions and magnitudes of stars in Westerlund 2
Byte-by-byte Description of file: w2phot.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq [1/5727] Identification number 6- 7 I2 h RAh Right ascension (J2000.0) 9- 10 I2 min RAm Right ascension (J2000.0) 12- 16 F5.2 s RAs Right ascension (J2000.0) 18 A1 --- DE- Declination sign (J2000.0) 19- 20 I2 deg DEd Declination (J2000.0) 22- 23 I2 arcmin DEm Declination (J2000.0) 25- 29 F5.2 arcsec DEs Declination (J2000.0) 31- 35 F5.2 mag Jmag ?=99.99 Magnitude in the J band (1) 37- 41 F5.3 mag e_Jmag ?=9.999 Photometric error in the J band (1) 43- 47 F5.2 mag Hmag ?=99.99 Magnitude in the H band (1) 49- 53 F5.3 mag e_Hmag ?=9.999 Photometric error in the h band (1) 55- 59 F5.2 mag Ksmag ?=99.99 Magnitude in the Ks band (1) 61- 65 F5.3 mag e_Ksmag ?=9.999 Photometric error in the Ks band (1)
Note (1): The values 99.99 for the magnitude and 9.999 for the errors correspond to sources for which we do not have photometry in the corresponding band.
Acknowledgements: Joana Ascenso, joanasba(at) History: * 03-Apr-2007: On-line version * 17-Jul-2012: J and Ks magnitudes were inverted, corrected now in the table (from author)
(End) Joana Ascenso [CAUP, Portugal], Patricia Vannier [CDS] 25-Jan-2007
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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