SIMBAD references

2002ApJ...573..270T - Astrophys. J., 573, 270-274 (2002/July-1)

Deep near-infrared observations of the x-ray-emitting class 0 protostar candidates in the Orion molecular cloud 3.

TSUJIMOTO M., KOYAMA K., TSUBOI Y., CHARTAS G., GOTO M., KOBAYASHI N., TERADA H. and TOKUNAGA A.T.

Abstract (from CDS):

We obtained near-infrared (NIR) imaging with the Subaru Telescope of the class 0 protostar candidates in the Orion molecular cloud 3, two of which were discovered to have X-ray emission by the Chandra X-Ray Observatory . We found strong evidence for the class 0 nature of the X-ray sources. First, our deep K-band image shows no emission brighter than 19.6 mag from both of these X-ray sources. Since class I protostars or class II T Tauri stars should be easily detected in the NIR with this sensitivity, the lack of K-band detection suggests that they are likely much more obscured than class I protostars. Second, our H2v=1-0S(1) image shows a bubble-like feature from one of the X-ray class 0 protostar candidates, which reinforces the idea that this is a class 0 protostar. We also discuss the nature of nine NIR sources found in our deep image based on their colors, spatial coincidence with millimeter cores, and the properties of their X-ray counterparts.

Abstract Copyright:

Journal keyword(s): Infrared: Stars - ISM: Individual: Alphanumeric: OMC-3 - stars: pre-main sequence - X-Rays: Stars

Nomenclature: Table 1: [TKT2002b] IRS N (Nos 1-9).

CDS comments: TKH 8a, c are [TKH2001] a and c in SIMBAD.

Simbad objects: 36

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