Deep NIR imaging of {rho} Oph cloud core : J/ApJ/719/550


Authors : Marsh K.A. orcid , Plavchan P., Kirkpatrick J.D. (hide) , Plavchan P., Kirkpatrick J.D. et..al

Bibcode : 2010ApJ...719..550M (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Photometry, infrared; Stars, late-type; Effective temperatures; Stars, masses; YSOs
UAT : Infrared photometry, Late-type stars, Effective temperature, Stellar masses, Young stellar objects

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Inserted into VizieR : 06-Jul-2012
Last modification : 04-Jan-2018

Deep near-infrared imaging of the {rho} Oph cloud core clues to the origin of the lowest-mass brown dwarfs. (2010)

Keywords : brown dwarfs - infrared stars - stars: low-mass - stars: pre-main sequence

Abstract:A search for young substellar objects in the {rho} Oph cloud core region has been made with the aid of multiband profile-fitting point-source photometry of the deep-integration Combined Calibration Scan images of the 2MASS extended mission in the J, H, and Ks bands, and Spitzer IRAC images at 3.6, 4.5, 5.8, and 8.0um. The field of view of the combined observations was 1{deg}x9.3', and the 5{sigma} limiting magnitude at J was 20.5. Comparison of the observed spectral energy distributions with the predictions of the COND and DUSTY models, for an assumed age of 1Myr, supports the identification of many of the sources with brown dwarfs and enables the estimation of effective temperature, T_eff_. The cluster members are then readily ...(more)
Abstract: (hide)
Our data set includes the deep J, H, and Ks images from the {rho} Oph calibration field of the Two Micron All Sky Survey (2MASS) Extended Mission (Cutri et al. 2006, Explanatory Supplement to the 2MASS All Sky Data Release) that were produced by combining 1582 observations made between 1997 and 2000 during the course of the main survey (Skrutskie et al. 2006, Cat. VII/233). We supplement these images with archival data at 3.6, 4.5, 5.8, and 8.0um from IRAC on the Spitzer Space Telescope, based on observations made in 2004 April 27-May 7 as part of the c2d legacy project (Evans et al. 2003PASP..115..965E).


                
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