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We present high-spatial-resolution ($\sim 0\farcs2$, or $\sim$3\,pc) CO(2--1) observations of the nearest young starburst dwarf galaxy, NGC\,5253, taken with the Atacama Large Millimeter/submillimeter Array. We have identified 118 molecular…

Astrophysics of Galaxies · Physics 2018-10-10 Rie E. Miura , Daniel Espada , Akihiko Hirota , Kouichiro Nakanishi , George J. Bendo , Hajime Sugai

Deep SCUBA observations of NGC 1275 at 450 micron and 850 micron along with the application of deconvolution algorithms have permitted us to separate the strong core emission in this galaxy from the fainter extended emission around it. The…

Astrophysics · Physics 2009-11-06 Judith A. Irwin , J. M. Stil , T. J. Bridges

We present results from K band slit scan observations of a ~20''x20'' region of the Galactic center (GC) in two separate epochs more than five years apart. The high resolution (R>=14,000) observations allow the most accurate radial velocity…

Multiple molecular lines with radiative transfer modelling are a powerful tool to probe the physics of star-forming gas in galaxies. We investigate the gas properties in the centre of the spiral galaxy NGC 2903 using low-J CO lines, i.e.…

Astrophysics of Galaxies · Physics 2020-05-14 Selçuk Topal

CO and HI velocity fields of seven nearby spiral galaxies, derived from radio-interferometric observations, are decomposed into Fourier components whose radial variation is used to search for evidence of radial gas flows. Additional…

Astrophysics · Physics 2009-11-10 Tony Wong , Leo Blitz , Albert Bosma

We present deep observations of the 12CO(1-0) and (3-2) lines in the ultra-luminous infrared and radio galaxy 4C12.50, carried out with the 30m telescope of the Institut de Radioastronomie Millimetrique. Our observations reveal the cold…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 K. M. Dasyra , F. Combes

Data of $^{12}$CO/$^{13}$CO/C$^{18}$O $J=1\to0$ emission toward the Galactic plane region of $l=35^\circ$ to $45^\circ$ and $b= -5^\circ$ to $+5^\circ$ are available with the Milky Way Imaging Scroll Painting (MWISP) project. Using the…

Astrophysics of Galaxies · Physics 2020-09-30 Liang-Hao Lin , Hong-Chi Wang , Yang Su , Chong Li , Ji Yang

We investigate the effects of ram pressure on the molecular ISM in the disk of the Coma cluster galaxy NGC 4921, via high resolution CO observations. We present 6" resolution CARMA CO(1-0) observations of the full disk, and 0.4" resolution…

We present an analysis of 55 central galaxies in clusters and groups with molecular gas masses and star formation rates lying between $10^{8}-10^{11}\ M_{\odot}$ and $0.5-270$ $M_{\odot}\ yr^{-1}$, respectively. We have used Chandra…

Astrophysics of Galaxies · Physics 2018-02-21 F. A. Pulido , B. R. McNamara , A. C. Edge , M. T. Hogan , A. N. Vantyghem , H. R. Russell , P. E. J. Nulsen , I. Babyk , P. Salomé

Keck spectroscopy of 5 proto-globular cluster candidates in NGC 1275 has been combined with HST WFPC2 photometry to explore the nature and origin of these objects and discriminate between merger and cooling flow scenarios for globular…

We attempt to visually classify the morphologies of 18190 molecular clouds, which are identified in the $^{12}$CO(1-0) spectral line data over $\sim$ 450 deg$^{2}$ of the second Galactic quadrant from the Milky Way Imaging Scroll Painting…

Astrophysics of Galaxies · Physics 2021-12-08 Lixia Yuan , Ji Yang , Fujun Du , Xunchuan Liu , Shaobo Zhang , Zehao Lin , Jingfei Sun , Qing-Zeng Yan , Yuehui Ma , Yang Su , Yan Sun , Xin Zhou

We present new observations of a 2' field in the north-eastern spiral arm of M31. In the 0.8 x 3.6 kpc mosaicked region, we have detected six distinct, large complexes of molecular gas, most of which lie along the spiral arm dust lane or in…

Astrophysics · Physics 2007-05-23 Kartik Sheth , Stuart N. Vogel , Christine D. Wilson , T. M. Dame

We report molecular line and dust continuum observations, made with the SEST telescope, towards four young high-mass star forming regions associated with highly luminous (L> 6x10^5 Lsun) IRAS sources (15290-5546, 15502-5302, 15567-5236 and…

Astrophysics of Galaxies · Physics 2014-11-20 Guido Garay , Diego Mardones , Leonardo Bronfman , Jorge May , Luis Chavarria , Lars-Ake Nyman

The heating and cooling of the interstellar medium allow the gas in the ISM to coexist at very different temperatures in thermal pressure equilibrium. The heating cannot be directly determined, but the cooling can be inferred from…

Astrophysics · Physics 2009-11-10 N. Lehner , B. P. Wakker , B. D. Savage

The ubiquity of filamentary structure at various scales through out the Galaxy has triggered a renewed interest in their formation, evolution, and role in star formation. The largest filaments can reach up to Galactic scale as part of the…

Astrophysics of Galaxies · Physics 2015-07-09 Ke Wang , Leonardo Testi , Adam Ginsburg , C. Malcolm Walmsley , Sergio Molinari , Eugenio Schisano

We study the physical properties and molecular excitation of the different warm gas components found in the protoplanetary nebula CRL 618. We revise our previous Herschel/HIFI observations, which consist of several 12CO and 13CO lines in…

Solar and Stellar Astrophysics · Physics 2015-06-17 R. Soria-Ruiz , V. Bujarrabal , J. Alcolea

The initial and boundary conditions of the Galactic star formation in molecular clouds are not well understood. In an effort to shed new light on this long-standing problem, we measured properties of dense cores and filamentary structures…

Astrophysics of Galaxies · Physics 2023-06-28 Xue-Mei Li , Guo-Yin Zhang , Alexander Men'shchikov , Jin-Zeng Li , Chang Zhang , Zhong-Zu Wu

Using a population of large-scale filaments extracted from an AREPO simulation of a Milky Way-like galaxy, we seek to understand the extent to which observed large-scale filament properties (with lengths $\gtrsim 100$ pc) can be explained…

Astrophysics of Galaxies · Physics 2020-01-01 Catherine Zucker , Rowan Smith , Alyssa Goodman

The physics of the coolest phases in the hot Intra-Cluster Medium (ICM) of clusters of galaxies is yet to be fully unveiled. X-ray cavities blown by the central Active Galactic Nucleus (AGN) contain enough energy to heat the surrounding gas…

Cosmology and Nongalactic Astrophysics · Physics 2011-05-25 J. de Plaa , N. Werner , A. Simionescu , J. S. Kaastra , Y. G. Grange , Jacco Vink

It is now widely accepted that dense filaments of molecular gas are integral to the process of stellar birth. While numerical simulations have succeeded in reproducing filamentary structure in turbulent gas and analytic calculations have…

Astrophysics of Galaxies · Physics 2015-06-23 S. Anathpindika , J. Freundlich