SIMBAD references

2006AJ....131.2164T - Astron. J., 131, 2164-2184 (2006/April-0)

A Chandra ACIS study of 30 Doradus. II. X-ray point sources in the massive star cluster R136 and beyond.


Abstract (from CDS):

We have studied the X-ray point-source population of the 30 Doradus (30 Dor) star-forming complex in the Large Magellanic Cloud using high spatial resolution X-ray images and spatially resolved spectra obtained with the Advanced CCD Imaging Spectrometer (ACIS) on board the Chandra X-Ray Observatory. Here we describe the X-ray sources in a 17'x17' field centered on R136, the massive star cluster at the center of the main 30 Dor nebula. We detect 20 of the 32 Wolf-Rayet stars in the ACIS field. The cluster R136 is resolved at the subarcsecond level into almost 100 X-ray sources, including many typical O3-O5 stars, as well as a few bright X-ray sources previously reported. Over 2 orders of magnitude of scatter in LXis seen among R136 O stars, suggesting that X-ray emission in the most massive stars depends critically on the details of wind properties and the binarity of each system, rather than reflecting the widely reported characteristic value LX/Lbol≃10–7. Such a canonical ratio may exist for single massive stars in R136, but our data are too shallow to confirm this relationship. Through this and future X-ray studies of 30 Dor, the complete life cycle of a massive stellar cluster can be revealed.

Abstract Copyright:

Journal keyword(s): ISM: H II Regions - Galaxies: Magellanic Clouds - Galaxy: Open Clusters and Associations: Individual: Alphanumeric: R136 - Stars: Wolf-Rayet - X-rays: individual (30 Doradus) - X-Rays: Stars

VizieR on-line data: <Available at CDS (J/AJ/131/2164): table1.dat table2.dat table3.dat table4.dat table5.dat>

Nomenclature: Tables 1, 2: [TBF2006] NNN (Nos 1-180).

CDS comments: Stars Mk are Cl* NGC 2070 Mel

Simbad objects: 196

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