A Near-Infrared Imaging Survey of the Chamaeleon I Dark Cloud

Abstract

We describe a near-infrared imaging survey covering approximately 1 square deg of the Chamaeleon I dark cloud. The survey is complete for K < 15.0, H < 16.0, and J < 16.5, roughly two 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 about 100 candidates of the cloud with K > 12.0, 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.

33 pages (including tables), 8 figures

Cited by in corpus (31)

• Spitzer Space Telescope study of disks in the young $\sigma$ Orionis cluster
• Infrared Extinction Toward Nearby Star-Forming Regions
• A Spitzer view of protoplanetary disks in the gamma Velorum cluster
• A Census of the Chamaeleon I Star-Forming Region
• Herbig Ae/Be Stars in nearby OB associations
• The Disk Population of the Chamaeleon I Star-Forming Region
• A Catalog of Young Stellar Groups and Clusters Within 1kpc of the Sun
• Evidence for Environmental Changes in the Submillimeter Dust Opacity
• Near-Infrared Photometric Variability of Stars Toward the Chamaeleon I Molecular Cloud
• The brown dwarf population in the Chamaeleon I cloud
• Spectroscopic Confirmation of the Least Massive Known Brown Dwarf in Chamaeleon
• The Mid-Infrared Extinction Law and its Variation in the Coalsack Nebula
• An X-ray census of young stars in the Chamaeleon I North cloud
• A Three Micron Survey of the Chamaeleon I Dark Cloud
• Infrared Properties of Close Pairs of Galaxies
• A Near-Infrared Imaging Survey of Coalsack Globule 2
• The ratio of N(C18O) and Av in Chamaeleon I and III-B using 2MASS and SEST
• Clumpy filaments of the Chamaeleon I cloud: C18O mapping with the SEST
• High-resolution mapping of interstellar clouds with near-infrared scattered light
• XMM-Newton probes the stellar population in Cha I South
• Near-infrared Spectra of Chamaeleon I Stars
• A Corona Australis cloud filament seen in NIR scattered light I. Comparison with extinction of background stars
• Low mass T Tauri and young brown dwarf candidates in the Chamaeleon II dark cloud found by DENIS
• GEMINI near-infrared spectroscopic observations of young massive stars embedded in molecular clouds
• Near-infrared spectra of ISO selected Chamaeleon I young stellar objects
• Impact of distance determinations on Galactic structure. I. Young and intermediate-age tracers
• A Near-Infrared (JHK) Survey of the Vicinity of the HII region NGC 7538: Evidence for a Young Embedded Cluster
• Near Infrared Adaptive Optics Imaging of the Embedded Cluster NGC 2024
• Near-Infrared Extinction in The Coalsack Globule 2
• A deep XMM-Newton X-ray observation of the Chamaeleon I dark cloud
• Optical spectra of selected Chamaeleon I young stellar objects