/ftp/cats/J_AJ/121//2673



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J/AJ/121/2673    3mum survey of the Chamaeleon I dark cloud    (Kenyon+, 2001)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	table1.dat
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Query from: http://vizier.cds.unistra.fr/cgi-bin/VizieR?-source=J/AJ/121/2673
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Beginning of ReadMe : J/AJ/121/2673 3mum survey of the Chamaeleon I dark cloud (Kenyon+, 2001) ================================================================================ A 3mum 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  0.5deg^2^ 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(Halpha and K-L. Stars with K-L<=0.6 have weak Halpha emission; stars with K-L>=0.6 have strong Halpha]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.