633 datasets found

A systematic comparison between molecular clouds in different evolutionary stages and processes of star formation is made over the range of 8{deg} to 38{deg} in Galactic...

We present the results of CCD photometry in the seven-color Vilnius system for 922 stars down to V~17mag in a 1.5 square degree field at the northern edge of the HII region...

The slope of the interstellar reddening line in the J-H vs. H-Ks diagram of the 2MASS survey in the direction of the North America and Pelican nebulae, the L 935 dust cloud and...

Vilnius seven-color photometry has been obtained for 238 stars down to 13th mag in the area of the California Nebula in Perseus. For nearly all of the stars photometric spectral...

We have compared the results of multicolor UBVR and H{alpha} photometry for 169 young star-formation complexes in five galaxies using a grid of evolutionary models for young...

The results of observations of a giant H II region, situated at the longitudes 4-10deg, at the wavelength 7.6cm are presented. A catalogue has been compiled containing 63...

The Milky Way contains thousands of HII region candidates identified by their characteristic mid-infrared morphology, but lacking detections of ionized gas tracers such as radio...

Using Green Bank Telescope radio recombination line (RRL) data, we analyze the role of leaking radiation from HII regions in maintaining the ionization of the interstellar...

The Survey of Ionized Gas of the Galaxy, Made with the Arecibo telescope (SIGGMA) provides a fully sampled view of the radio recombination line (RRL) emission from the portion...

We present and describe the astro-photometric catalog of more than 800000 sources found in the Hubble Tarantula Treasury Project (HTTP). HTTP is a Hubble Space Telescope...

The WISE Catalog of Galactic H II Regions contains ~2000 H II region candidates lacking ionized gas spectroscopic observations. All candidates have the characteristic H II...

We present the Massive Star-forming Regions (MSFRs) Omnibus X-ray Catalog (MOXC), a compendium of X-ray point sources from Chandra/ACIS observations of a selection of MSFRs...

The Columbia University-Universidad de Chile CO Survey of the southern Milky Way is used to separate the CO(1-0) emission of the fourth Galactic quadrant within the solar circle...

We present fully sampled 38" resolution maps of the CO and ^13^CO J=2-1 lines in the molecular clouds toward the HII region complex W3. The maps cover a 2.0{deg}x1.67{deg}...

We present 38" resolution maps of the CO and ^13^COJ=2-1 lines in the molecular clouds toward the HII region complex W51. The maps cover a 1.25x1{deg} section of the galactic...

We studied star formation activities in the molecular clouds in the Large Magellanic Cloud. We have utilized the second catalog of 272 molecular clouds obtained by NANTEN (4m...

We derive the molecular properties for a sample of 301 Galactic HII regions including 123 ultra compact (UC), 105 compact, and 73 diffuse nebulae. We analyze all sources within...

It is known that interstellar gas has a fractal structure in a wide range of spatial scales with a fractal dimension that seems to be a constant around D_f_~2.7. It is expected...

We build, as far as theory will permit, self-consistent model HII regions around central clusters of aging stars. These produce strong emission line diagnostics applicable to...

We have identified 41 infrared dark clouds from the 8um maps of the Midcourse Space Experiment (MSX), selected to be found within 1deg^2^ areas centered on known ultracompact...