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J/AJ/121/974        JHK photometry in Cha I                  (Gomez+, 2001)

A near-infrared imaging survey of the Chamaeleon I dark cloud. Gomez M., Kenyon S.J. <Astron. J. 121, 974 (2001)> =2001AJ....121..974G
ADC_Keywords: Molecular clouds ; Photometry, infrared ; Stars, pre-main sequence Keywords: dust, extinction - ISM: individual (Chamaeleon I) - stars: formation - stars: low-mass, brown dwarfs - stars: pre-main-sequence Abstract: We describe a near-infrared imaging survey covering ∼1deg2 of the Chamaeleon I dark cloud. The survey is complete for K<15.0, H<16.0, and J<16.5, roughly 2 magnitudes more sensitive than previous large-scale surveys. We use the large number of background stars detected to derive an accurate near-infrared extinction law for the cloud and select new candidate members with near-infrared color excesses. We list ∼100 candidates of the cloud with K≥2.0, based on their positions in the J-H, H-K color-color diagram. These new stars have low luminosities (K∼12-16, H-K≳0.5-1.5) and may have masses close to or even below the hydrogen-burning limit. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 57 56 Candidate pre-main-sequence stars with K<14.0 table4.dat 57 62 Candidate pre-main-sequence stars with K>14.0
See also: J/A+A/357/219 : ISOCAM observations in Cha I. (Persi+, 2000) Byte-by-byte Description of file: table3.dat table4.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [GK2001] Star number 5 A1 --- f_[GK2001] [a] Indicates star has a fuzzy K image 7- 8 I2 h RAh Right Ascension (J2000) 10- 11 I2 min RAm Right Ascension (J2000) 13- 16 F4.1 s RAs Right Ascension (J2000) 18 A1 --- DE- Sign of the Declination (J2000) 19- 20 I2 deg DEd Declination (J2000) 22- 23 I2 arcmin DEm Declination (J2000) 25- 26 I2 arcsec DEs Declination (J2000) 28- 32 F5.2 mag Kmag K band magnitude 34- 37 F4.2 mag H-K The (H-K) color 39- 42 F4.2 mag J-H The (J-H) color 44- 55 A12 --- ID Identification 57 I1 --- r_ID ? References on ID (1)
Note (1): References: 1 = Persi et al., 2000, Cat. J/A+A/357/219, ISO-ChaI NNN 2 = Oasa et al. (1999ApJ...526..336O), NIR-NN (= [OTS99] NN in Simbad)
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 24-Apr-2001
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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