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J/AJ/121/2673    3µm survey of the Chamaeleon I dark cloud    (Kenyon+, 2001)

A 3µm survey of the Chamaeleon I dark cloud. Kenyon S.J., Gomez M. <Astron. J. 121, 2673 (2001)> =2001AJ....121.2673K
ADC_Keywords: Molecular clouds ; Stars, pre-main sequence ; Photometry, infrared Keywords: infrared radiation - ISM: individual (Chamaeleon I) - stars: formation - stars: pre-main-sequence Abstract: We describe an L-band photometric survey of ∼0.5deg2 of the Chamaeleon I dark cloud. The survey has a completeness limit of L<11.0. Our survey detects 124 sources, including all known pre-main-sequence stars with L≤11. The fraction of sources with near-IR excess emission is 58%±4% for K=9-11. Cha I sources have bluer H-K and K-L colors than pre-main-sequence stars in Taurus-Auriga. These sources also have a strong correlation between EW(Hα and K-L. Stars with K-L≤0.6 have weak Hα emission; stars with K-L≥0.6 have strong H{alpha]mission. Because many Cha I sources are heavily reddened, this division between weak emission T Tauri stars and classical T Tauri stars occurs at a redder K-L than in Taurus-Auriga. We acquired L-band photometry of Cha I sources and standard stars using the South Pole Infrared Explorer (SPIREX) during the 1999 March-October observing season. The SPIREX 60cm telescope developed by CARA for observations at the South Pole was equipped with the NOAO/KPNO Abu infrared camera, which includes a first generation 1024x1024 InSb detector array. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 103 124 L-band observations for the Cha I sources
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [KG2001] Cha I source number 5- 6 I2 h RAh Right Ascension (J2000) 8- 9 I2 min RAm Right Ascension (J2000) 11- 14 F4.1 s RAs Right Ascension (J2000) 16 A1 --- DE- Sign of the Declination (J2000) 17- 18 I2 deg DEd Declination (J2000) 20- 21 I2 arcmin DEm Declination (J2000) 23- 24 I2 arcsec DEs Declination (J2000) 26- 30 F5.2 mag Lmag ? The L-band magnitude 32 A1 --- f_Lmag [s] Indicates a saturated detection on the SPIREX/Abu image 34- 38 F5.2 mag K-L ? The K-L color 40- 44 F5.2 mag H-K ? The H-K color 46- 49 F4.2 mag J-H ? The J-H color 51- 88 A38 --- Id Source identification 90-102 A13 --- r_Id Reference numbers, separated by comma (1)
Note (1): References: 1 = Hartigan, 1993AJ....105.1511H, "Hn NN" 2 = Persi et al., 2000, Cat. J/A+A/357/219, "ISO-ChaI NNN" 3 = Feigelson et al., 1993ApJ...416..623F, "CHXR NN" 4 = Cambresy et al., 1998A&A...338..977C, "[CCE98] NN" 5 = Schwartz, 1977ApJS...35..161S, "NAME Cha N" 6 = Baud et al., 1984ApJ...278L..53B, "BYB NN" 7 = Henize & Mendoza, 1973ApJ...180..115H, "Ass CHA T 1-NN" 8 = Comeron et al., 1999A&A...343..477C, "CRBR MMSS.s-MMSS" 9 = Feigelson & Kriss, 1989ApJ...338..262F, "CHX NN, CHX NNa" 10 = Glass, 1979MNRAS.187..305G, "Glass A" 11 = Schwartz & Henize, 1983AJ.....88.1665S 12 = Oasa et al., 1999ApJ...526..336O, "[OTS99] NN" 13 = Hyland et al., 1982MNRAS.201.1095H, "HJM AFF-NN" 14 = Persi et al., 1999AJ....117..439P, "[PMK99] ISOCAM Cha INaN"-------------------------------------------------------------------------------- History:
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 28-Sep-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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