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J/AJ/138/33         VLT JHKs imaging of RCW 38               (Derose+, 2009)

A Very Large Telescope/NACO study of star formation in the massive embedded cluster RCW 38. Derose K.L., Bourke T.L., Gutermuth R.A., Wolk S.J., Megeath S.T., Alves J., Nurnberger D. <Astron. J., 138, 33-45 (2009)> =2009AJ....138...33D
ADC_Keywords: H II regions ; Infrared sources ; Photometry, infrared Keywords: infrared: stars - ISM: individual (RCW 38) - stars: formation Abstract: We present the results of high angular resolution adaptive optics (AO) near-infrared (JHKs) observations of the deeply embedded massive cluster RCW 38 using NACO on the Very Large Telescope. Narrowband AO observations centered at wavelengths of 1.28um, 2.12um, and 2.17um were also obtained. The area covered by these observations is about 0.5pc2, centered on the O-star RCW 38 IRS 2. We use the JHKs colors to identify young stars with infrared (IR) excess in this region. Description: High angular resolution near-IR imaging of RCW 38 was performed on 2003 February 20 and 2003 February 23 using NAOS-CONICA (NACO) at Yepun, one of the 8.2m unit telescopes of the VLT installed at the European Southern Observatory's (ESO) site on Cerro Paranal, Chile. In order to estimate the degree of background contamination, a control field (J. Ascenso 2008, private communication) was imaged on 2005 June 17 in the J, H, and Ks passbands using the SOFI (Son of ISAAC) on the New Technology Telescope (NTT) at La Silla, Chile. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 60 483 Infrared photometry of sources detected with magnitude uncertainties <0.2
See also: J/AJ/132/1100 : X-ray and IR sources in RCW 38 (Wolk+, 2006) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Running source number 5 I1 h RAh Hour of Right Ascension (J2000) 7- 8 I2 min RAm Minute of Right Ascension (J2000) 10- 13 F4.2 s RAs Second of Right Ascension (J2000) 15 A1 --- DE- Sign of the Declination (J2000) 16- 17 I2 deg DEd Degree of Declination (J2000) 19- 20 I2 arcmin DEm Arcminute of Declination (J2000) 22- 25 F4.1 arcsec DEs Arcsecond of Declination (J2000) 27- 31 F5.2 mag Jmag ? NACO/VLT J band magnitude 33- 36 F4.2 mag e_Jmag ? rms uncertainty on Jmag 38- 42 F5.2 mag Hmag ? NACO/VLT H band magnitude 44- 47 F4.2 mag e_Hmag ? rms uncertainty on Hmag 49- 53 F5.2 mag Ksmag ? NACO/VLT Ks band magnitude 55- 58 F4.2 mag e_Ksmag ? rms uncertainty on Ksmag 60 A1 --- n_Seq [epX] Note on source (1)
Note (1): Note as follows: e = source with an infrared excess p = protostar, source with an excess greater than of that expected of a reddened T Tauri star X = source that has J-H<1 and whose photometry is incorrect, for reasons described in the text
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 15-Nov-2011
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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