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Related papers: Star Forming Regions in Cassiopeia

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We present a sample of 14 OB stars in the Small Magellanic Cloud that meet strong criteria for having formed under extremely sparse star-forming conditions in the field. These stars are a minimum of 28 pc in projection from other OB stars,…

Astrophysics of Galaxies · Physics 2015-06-15 M. S. Oey , J. B. Lamb , C. T. Kushner , E. W. Pellegrini , A. S. Graus

We examine the connections between the current global star formation activity, luminosity, dynamical mass and morphology of galaxies in the Local Volume, using H-alpha data from the 11 Mpc H-alpha and Ultraviolet Galaxy Survey (11HUGS).…

Astrophysics · Physics 2009-11-13 Janice C. Lee , Robert C. Kennicutt , Jose G. Funes , S. J. , Shoko Sakai , Sanae Akiyama

Our goal is to identify bipolar HII regions and to understand their morphology, their evolution, and the role they play in the formation of new generations of stars. We use the Spitzer and Herschel Hi-GAL surveys to identify bipolar HII…

Once mixed in the ambient galactic plane stellar population, young stars are virtually indiscernible because neither their global photometric properties nor the presence of nearby gas can help to disentangle them from older ones.…

Solar and Stellar Astrophysics · Physics 2010-12-10 A. Klutsch , D. Montes , P. Guillout , A. Frasca , F. -X. Pineau , N. Grosso , E. Marilli , J. López-Santiago

We have discovered a number of very small isolated HII regions 20-30 kpc from their nearest galaxy. The HII regions appear as tiny emission line dots (ELdots) in narrow band images obtained by the NOAO Survey for Ionization in Neutral Gas…

Astrophysics · Physics 2007-05-23 E. V. Ryan-Weber , M. E. Putman , K. C. Freeman , G. R. Meurer , R. L. Webster

We analyze three nearby spiral galaxies - NGC 1097, NGC 1566, and NGC 3627 - using images from the DustPedia database in seven infrared bands (3.6, 8, 24, 70, 100, 160, and 250 micron). For each image, we perform photometric decomposition…

Observations of the high redshift Universe, interpreted in the context of a new generation of computer simulated model Universes, are providing new insights into the processes by which galaxies and quasars form and evolve, as well as the…

Astrophysics · Physics 2007-05-23 Jill Bechtold , Richard Elston , Howard K. C. Yee , Erica Ellingson , Roc M. Cutri

We present an analysis of the star formation properties of field galaxies within the local volume out to a recession velocity limit of 3000 km/s. A parent sample of 863 star-forming galaxies is used to calculate a B-band luminosity…

Astrophysics · Physics 2009-11-13 P. A. James , J. H. Knapen , N. S. Shane , I. K. Baldry , R. S. de Jong

We present observations of the intermediate to massive star-forming region I05345+3157 using the molecular line tracer CS(2-1) with CARMA to reveal the properties of the dense gas cores. Seven gas cores are identified in the integrated…

Solar and Stellar Astrophysics · Physics 2015-05-28 Katherine I. Lee , Leslie W. Looney , Randolf Klein , Shiya Wang

40 galaxies are currently known as, or suspected to be Local Group members within a radius of 1.8 Mpc. 37 of these galaxies are dwarf galaxies with M_B > -18.5 mag. I present a compilation of the star formation histories of dwarf…

Astrophysics · Physics 2007-05-23 Eva K. Grebel

Within the key project "Herschel M33 extended survey" (HerM33es), we are studying the physical and chemical processes driving star formation and galactic evolution in the nearby galaxy M33, combining the study of local conditions affecting…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 C. Kramer , M. Boquien , J. Braine , C. Buchbender , D. Calzetti , P. Gratier , B. Mookerjea , M. Relano , S. Verley

Massive stars play an important role in the Universe. Unlike low-mass stars, the formation of these objects located at great distances is still unclear. It is expected to be governed by some combination of self-gravity, turbulence, and…

Astrophysics of Galaxies · Physics 2024-08-07 A. G. Pazukhin , I. I. Zinchenko , E. A. Trofimova

We use SCUBA 850 micron and CO observations to analyze the surroundings of three Galactic ring-like HII regions, KR 7, KR 81, and KR 120 (Sh 2-124, Sh 2-165 and Sh 2-187), with the aim of finding sites of triggered star formation. We find…

Astrophysics of Galaxies · Physics 2015-05-27 Kim Arvidsson , Charles R. Kerton

We study arrival directions of 1.4x10^6 extensive air showers (EAS) registered with the EAS--1000 Prototype Array in the energy range 0.1--10 PeV. By applying an iterative algorithm that provides uniform distribution of the data with…

Astrophysics · Physics 2007-05-23 G. V. Kulikov , M. Yu. Zotov

We present a model that unifies the cosmic star formation rate (CSFR), obtained through the hierarchical structure formation scenario, with the (Galactic) local star formation rate (SFR). It is possible to use the SFR to generate a CSFR…

Astrophysics of Galaxies · Physics 2017-11-15 Carolina Gribel , Oswaldo D. Miranda , Jose Williams Vilas-Boas

We present results of a search for a young stellar moving group associated with the star HD 141569, a nearby, isolated Herbig AeBe primary member of a 5+/-3 Myr-old triple star system on the outskirts of the Sco-Cen complex. Our…

The Cygnus region, which dominates the local spiral arm of the Galaxy, is one of the nearest complexes of massive star formation. Its massive stellar content, regions of ongoing star formation, and molecular gas have been studied in detail.…

Astrophysics of Galaxies · Physics 2020-12-09 F. Comerón , A. A. Djupvik , N. Schneider , A. Pasquali

We present an optical/infrared study of the dense molecular cloud, L935, dubbed "The Gulf of Mexico", which separates the North America and the Pelican nebulae, and we demonstrate that this area is a very active star forming region. A…

Solar and Stellar Astrophysics · Physics 2015-05-27 Tina Armond , Bo Reipurth , John Bally , Colin Aspin

General properties of the Orion star-forming region are discussed, with a focus on the dense Orion Nebula Cluster (ONC). This cluster contains between 2500 and 4500 objects located within a few parsecs of the eponymous Trapezium stars. Its…

Astrophysics · Physics 2009-09-25 Lynne A. Hillenbrand , John M. Carpenter , Eric D. Feigelson

We report a super-linear correlation for the star formation law based on new CO($J$=1-0) data from the CARMA and NOBEYAMA Nearby-galaxies (CANON) CO survey. The sample includes 10 nearby spiral galaxies, in which structures at sub-kpc…