SIMBAD references

2003AJ....125.1537T - Astron. J., 125, 1537-1545 (2003/March-0)

Deep near-infrared observations and identifications of Chandra sources in Orion molecular clouds 2 and 3.

TSUJIMOTO M., KOYAMA K., KOBAYASHI N., GOTO M., TSUBOI Y. and TOKUNAGA A.T.

Abstract (from CDS):

We conducted deep near-infrared (NIR) imaging observations of Orion molecular clouds 2 and 3 using the Quick Infrared Camera on the 88 inch (2.2 m) telescope of the University of Hawaii. Our purposes were (1) to generate a comprehensive NIR source catalog of these star-forming clouds and (2) to identify the NIR counterpart of the Chandra X-ray sources that have no counterpart in the Two Micron All Sky Survey (2MASS) catalog. Our J-, H-, and K-band observations are ∼2 mag deeper than those of 2MASS and match the current Chandra observation well. We detected 1448 NIR sources, for which we derived the position, the J-, H-, and K-band magnitude, and the 2MASS counterpart. Using this catalog, we identified the NIR counterpart for ∼42% of the 2MASS unidentified Chandra sources. The nature of these Chandra sources are discussed using their NIR colors and spatial distributions, and a dozen protostar and brown dwarf candidates are identified.

Abstract Copyright:

Journal keyword(s): Infrared Radiation - stars: individual (Orion Molecular Cloud 2/3) - Stars: Pre-Main-Sequence - X-Rays

VizieR on-line data: <Available at CDS (J/AJ/125/1537): table2.dat table3.dat>

Nomenclature: Table 2: TKK NNNN (Nos 1-1448) = TKK JHHMMSSss+DDMMSSs N=1448.

Simbad objects: 1458

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2021.03.04-20:05:56

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