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Galaxies in the local Universe are thought to require ongoing replenishment of their gas reservoir in order to maintain the observed star formation rates. Cosmological simulations predict that such accretion can occur in both a dynamically…

We report on distance determinations for two high Galactic latitude cloud complexes, G192-67 and MBM 23-24. No distance determination exists in the literature for either cloud. Thirty-four early type stars were observed towards the two…

Astrophysics · Physics 2009-10-31 Catherine E. Grant , David N. Burrows

We test the hypothesis that globular clusters form in supergiant molecular clouds within high-redshift galaxies. Numerical simulations demonstrate that such large, dense, and cold gas clouds assemble naturally in current hierarchical models…

Astrophysics · Physics 2010-07-27 Oleg Y. Gnedin , Jose L. Prieto

Spatial association of clumps from different tracers turns out to be a valuable tool to determine the physical properties of molecular clouds. It provides a reliable estimate for the $X$-factors, serves to trace the density of clumps seen…

Astrophysics of Galaxies · Physics 2018-02-14 Todor V. Veltchev , Volker Ossenkopf-Okada , Orlin Stanchev , Nicola Schneider , Sava Donkov , Ralf S. Klessen

We investigate the relationship between brightest cluster galaxies (BCGs) and their host clusters using a sample of nearby galaxy clusters from the Representative XMM Cluster Structure Survey (REXCESS). The sample was imaged with the…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-11 D. B. Haarsma , L. Leisman , M. Donahue , S. Bruch , H. Boehringer , J. H. Croston , G. W. Pratt , G. M. Voit , M. Arnaud , D. Pierini

Machine learning has been successfully applied in varied field but whether it is a viable tool for determining the distance to molecular clouds in the Galaxy is an open question. In the Galaxy, the kinematic distance is commonly employed as…

To better characterize the upper end of the galaxy stellar mass range, the MUSE Most Massive Galaxies (M3G) Survey targeted the most massive galaxies (M$>10^{12}$ M$_{\odot}$) found in the densest known clusters of galaxies at $z\sim0.046$.…

Astrophysics of Galaxies · Physics 2021-05-12 I. Pagotto , D. Krajnović , M. den Brok , E. Emsellem , J. Brinchmann , P. M. Weilbacher , W. Kollatschny , M. Steinmetz

Observations of millimeter wavelength radio recombination lines (mm-RRLs) are used to search for HII regions in an unbiased way that is complementary to many of the more traditional methods previously used. We carried out targeted mm-RRL…

Astrophysics of Galaxies · Physics 2017-06-07 W. -J. Kim , F. Wyrowski , J. S. Urquhart , K. M. Menten , T. Csengeri

By applying our previously developed two-step scheme for galaxy morphology classification, we present a catalog of galaxy morphology for H-band selected massive galaxies in the COSMOS-DASH field, which includes 17292 galaxies with stellar…

Astrophysics of Galaxies · Physics 2023-07-07 Yao Dai , Jun Xu , Jie Song , Guanwen Fang , Chichun Zhou , Shuo Ba , Yizhou Gu , Zesen Lin , Xu Kong

We cross-correlate the 100 um Improved Reprocessing of the IRAS Survey (IRIS) map and galaxy clusters at 0.1 < z < 0.3 in the maxBCG catalogue taken from the Sloan Digital Sky Survey, measuring an angular cross-power spectrum over multipole…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-08 Adam D. Hincks , Amir Hajian , Graeme E. Addison

We study the radial number density and stellar mass density distributions of satellite galaxies in a sample of 60 massive clusters at 0.04<z<0.26 selected from the Multi-Epoch Nearby Cluster Survey (MENeaCS) and the Canadian Cluster…

Cosmology and Nongalactic Astrophysics · Physics 2015-04-29 Remco F. J. van der Burg , Henk Hoekstra , Adam Muzzin , Cristóbal Sifón , Michael L. Balogh , Sean L. McGee

We explore large-scale cosmic structure using the spatial distribution of 542 gamma-ray bursts (GRBs) having accurately measured positions and spectroscopic redshifts. Prominent cosmological clusters are identified in both the northern and…

Cosmology and Nongalactic Astrophysics · Physics 2023-12-19 Istvan Horvath , Zsolt Bagoly , Lajos G. Balazs , Jon Hakkila , Zsuzsa Horvath , Andras Peter Joo , Sandor Pinter , L. Viktor Tóth , Peter Veres , Istvan I. Racz

We present the results of a Parkes Multibeam HI survey of six loose groups of galaxies analogous to the Local Group. This survey was sensitive to HI-rich objects in these groups to below 10^7 M(sun) of HI, and was designed to search for low…

We report on a multi-wavelength (IR to cm) and multi-resolution (1 mas to 20 arcsec) exploration of high-mass star formation regions in the Galactic plane, at longitudes observable from the Southern Hemisphere. Our source sample was…

Astrophysics · Physics 2007-05-23 V. Minier , M. G. Burton , T. Hill , C. R. Purcell , S. Longmore , A. J. Walsh , F. Herpin

Kinematic distances to 750 molecular clouds identified in the 13CO J=1-0 Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey (BU-FCRAO GRS) are derived assuming the Clemens rotation curve of the Galaxy. The…

Astrophysics of Galaxies · Physics 2009-07-22 Julia Roman-Duval , James M. Jackson , Mark Heyer , Alexis Johnson , Jill Rathborne , Ronak Shah , Robert Simon

We present an algorithm designed to identify galaxy (proto)clusters in wide-area photometric surveys by first selecting their dominant galaxy-i.e., the Brightest Cluster Galaxy (BCG) or protoBCG-through the local stellar mass density traced…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-14 Marcelo C. Vicentin , Pablo Araya-Araya , Laerte Sodré , Michael A. Strauss

Gravitational clustering broadens the count-in-cells distribution of galaxies for surveys along uncorrelated (well-separated) lines of sight beyond Poisson noise. A number of methods have proposed to measure this excess "cosmic" variance to…

Astrophysics of Galaxies · Physics 2018-11-28 Alex Cameron , Michele Trenti , Rachael Livermore , Cameron van der Velden

We introduce a new photometric estimator of the HI mass fraction (M_HI/M_*) in local galaxies, which is a linear combination of four parameters: stellar mass, stellar surface mass density, NUV-r colour, and g-i colour gradient. It is…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Cheng Li , Guinevere Kauffmann , Jian Fu , Jing Wang , Barbara Catinella , Silvia Fabello , David Schiminovich , Wei Zhang
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