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This database table is based upon the information contained in the Catalog of Galactic O-Type Stars (Garmany, Conti, and Chiosi 1982), which is a compilation from the literature of all O-type...
Search relevance: 284.37 | Views last month: 8 | Catalog Last Checked: November 10, 2026 at 11:56 PM -
The authors have produced a catalog of 378 Galactic O stars (the GOS Catalog) with accurate spectral classifications that is complete for V < 8 but includes many fainter stars. The catalog...
Search relevance: 257.78 | Views last month: 5 | Catalog Last Checked: November 10, 2026 at 11:57 PM -
An all-sky catalog of Galactic OB stars has been created by extending the Case-Hamburg Galactic Plane Luminous Stars surveys to include 5,500 additional objects drawn from the literature. This...
Search relevance: 92.35 | Views last month: 6 | Catalog Last Checked: November 10, 2026 at 11:56 PM -
The optical identification of large number of X-ray sources such as those from the ROSAT All-Sky Survey is challenging with conventional spectroscopic follow-up observations. The authors have...
Search relevance: 79.07 | Views last month: 14 | Catalog Last Checked: November 10, 2026 at 11:58 PM -
This table contains a catalog of 5184 candidate infrared counterparts to X-ray sources detected toward the Galactic center. The X-ray sample contains 9017 point sources detected in this region by...
Search relevance: 74.99 | Views last month: 0 | Catalog Last Checked: November 10, 2026 at 11:56 PM -
Following the advent of increasingly sensitive X-ray observatories, deep observations of early-type stars became possible. However, the results for only a few objects or clusters have until now...
Search relevance: 69.75 | Views last month: 2 | Catalog Last Checked: November 10, 2026 at 11:56 PM -
The optical identification of large number of X-ray sources such as those from the ROSAT All-Sky Survey is challenging with conventional spectroscopic follow-up observations. The authors have...
Search relevance: 66.83 | Views last month: 4 | Catalog Last Checked: November 10, 2026 at 11:57 PM -
NGC 6231 is a young cluster (age ~2-7 Myr) dominating the Sco OB1 association (distance ~1.59 kpc) with ~100 O and B stars and a large pre-main-sequence stellar population. The authors combine a...
Search relevance: 61.53 | Views last month: 2 | Catalog Last Checked: November 10, 2026 at 11:58 PM -
A very sensitive X-ray investigation of the giant H II region N11 in the Large Magellanic Cloud (LMC) was performed using the Chandra X-ray Observatory in which 165 point sources were detected....
Search relevance: 56.47 | Views last month: 5 | Catalog Last Checked: November 10, 2026 at 11:57 PM -
Gum 31 is a prominent, but still rather poorly studied, HII region around the stellar cluster NGC 3324 at the northwestern periphery of the Carina nebula complex. The aim of the authors aim was to...
Search relevance: 54.98 | Views last month: 2 | Catalog Last Checked: November 10, 2026 at 11:58 PM -
Spitzer IRAC observations and stellar photometric catalogs are presented for the Massive Young star-forming complex Study in the Infrared and X-ray (MYStIX). MYStIX is a multi-wavelength census of...
Search relevance: 49.67 | Views last month: 6 | Catalog Last Checked: November 10, 2026 at 11:56 PM
