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We present results from a survey of a 1300 arcmin^2 region of the Orion B South molecular cloud, including NGC 2024, NGC 2023, and the Horsehead Nebula (B33), obtained using the Submillimetre Common-User Bolometer Array (SCUBA) on the James…

Astrophysics · Physics 2009-11-13 Doug Johnstone , Henry Matthews , George F. Mitchell

We present the results of N2H+(1-0) observations of 35 dense molecular cloud cores from the northern and southern hemispheres where massive stars and star clusters are formed. Line emission has been detected in 33 sources, for 28 sources…

Astrophysics · Physics 2009-11-07 L. Pirogov , I. Zinchenko , P. Caselli , L. E. B. Johansson , P. C. Myers

We present a R=10,000 M-band spectrum of LLN19 (IRAS 08470-4321), a heavily embedded intermediate-mass young stellar object located in the Vela Molecular Cloud, obtained with VLT-ISAAC. The data were fitted by a 2-slab cold-hot model and a…

Astrophysics of Galaxies · Physics 2015-05-18 W. -F. Thi , E. F. van Dishoeck , K. M. Pontoppidan , E. Dartois

We have accumulated 12CO(1-0) and (2-1) data of several GMCs in M31 using the Plateau de Bure Interferometer. The sample covers a range of 5 to 18 kpc galactocentric distance and various physical conditions. The spatial resolution attains…

Astrophysics · Physics 2007-05-23 N. Neininger

We identify optical emission-line features 700" (12 kpc) southwest of the nucleus of Centaurus A, roughly opposite the radio jet and well-known optical emission filaments associated with the northern radio structure. These regions are…

Astrophysics of Galaxies · Physics 2019-01-30 William C. Keel , Julie K. Banfield , Anne Medling , Susan G. Neff

The Coma supercluster (100 Mpc) offers an unprecedented contiguous range of environments in the nearby Universe. In this paper we present a catalogue of spectroscopically confirmed galaxies in the Coma supercluster detected in the…

Astrophysics of Galaxies · Physics 2018-06-06 Smriti Mahajan , Ankit Singh , Devika Shobhana

We present sensitive and high angular resolution CO(1-0) data obtained by the Combined Array for Research in Millimeter-wave Astronomy (CARMA) observations toward the nearby grand-design spiral galaxy M 51. The angular resolution of 0.7"…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Fumi Egusa , Jin Koda , Nick Scoville

Recent spectroscopic observations of a few thousand partially obscured galaxies in the Vela constellation revealed a massive overdensity on supercluster scales straddling the Galactic Equator (l $\sim$ 272.5deg) at $cz \sim 18000$km/s. It…

We use two-dimensional hydrodynamical simulations to investigate the properties of dense ejecta clumps (bullets) in a core collapse supernova remnant, motivated by the observation of protrusions probably caused by clumps in the Vela…

Astrophysics · Physics 2009-11-07 Chih-Yueh Wang , Roger A. Chevalier

Aims. The process of gravitational fragmentation in the L1482 molecular filament of the California molecular cloud is studied by combining several complementary observations and physical estimates. We investigate the kinematic and dynamical…

Astrophysics of Galaxies · Physics 2014-07-07 Da-Lei Li , Jarken Esimbek , Jian-Jun Zhou , Yu-Qing Lou , Gang Wu , Xin-Di Tang , Yu-Xin He

It is known that massive stars form as result of the fragmentation of molecular clumps. However, what is not clear is whether this fragmentation gives rise to cores massive enough to form directly high-mass stars, or leads to cores of low…

Astrophysics of Galaxies · Physics 2022-02-16 M. E. Ortega , A. Marinelli , N. L. Isequilla , S. Paron

Centaurus A is the most nearby powerful AGN, widely studied at all wavelengths. Molecular gas has been found in the halo at a distance of ~20 kpc from the galaxy centre, associated with HI shells. The molecular gas lies inside some IR and…

Astrophysics of Galaxies · Physics 2016-01-27 Quentin Salomé , Philippe Salomé , Françoise Combes , Stephen Hamer , Ian Heywood

We present the results of sulfur monoxide, SO line emission observations of G0.253+0.016 with the Atacama Large Millimeter/submillimeter Array (ALMA) at an angular resolution of 1.7 arcsec. The dense and massive molecular cloud of…

Astrophysics of Galaxies · Physics 2015-06-19 Aya E. Higuchi , James O. Chibueze , Asao Habe , Ken Takahira , Shuro Takano

We present a catalogue of 453 molecular clouds in M31 extracted from CO J=1-0 data observed with CARMA using a dendrogram. Our clouds have the mean values of 2.8 km s$^{-1}$, 22.1 pc and 10$^{5.2}$ M$_\odot$ for the velocity dispersion,…

Astrophysics of Galaxies · Physics 2025-12-30 J. Armijos-Abendaño , S. A. Eales , M. W. L. Smith

We present a new distance estimation method for dust-continuum-identified molecular cloud clumps. Recent (sub-)millimeter Galactic plane surveys have cataloged tens of thousands of these objects, but detailed study of their physical…

Using the Large Millimeter Telescope and the SEQUOIA 3~mm focal plane array, we have searched for molecular line emission from two atomic clouds associated with the Fermi Bubble of the Milky Way. Neither 12CO nor 13CO J=1-0 emission is…

Astrophysics of Galaxies · Physics 2025-03-12 M. Heyer , E. Di Teodoro , L. Loinard , F. J. Lockman , N. M. McClure-Griffiths , Q. D. Wang

Stellar population and the interstellar gas-dust medium in the vicinity of the open star cluster vdB 130 are analysed using optical observations taken with the 6-m telescope of the SAO RAS and the 125-cm telescope of the SAI MSU along with…

For the first time, we reveal large amounts of cold molecular gas in a ram pressure stripped tail, out to a large, intracluster distance from the galaxy. With the APEX telescope we have detected 12CO(2-1) emission corresponding to more than…

Astrophysics of Galaxies · Physics 2015-06-19 Pavel Jachym , Francoise Combes , Luca Cortese , Ming Sun , Jeffrey D. P. Kenney