English
Related papers

Related papers: A Millimeter Continuum Survey for Massive Protoclu…

200 papers

The study of physical and chemical properties of massive protostars is critical to better understand the evolutionary sequence which leads to the formation of high-mass stars. IRAS 18151-1208 is a nearby massive region (d = 3kpc, L ~ 20000…

Astrophysics · Physics 2009-11-13 M. Marseille , S. Bontemps , F. Herpin , F. F. S. van der Tak , C. R. Purcell

We report the discovery of a new young stellar cluster and molecular cloud located in the far outer Galaxy, seen towards IRAS 06361-0142, and we characterise their properties. Near-infrared images were obtained with VLT/ISAAC through JHKs…

Astrophysics · Physics 2019-08-19 Joao L. Yun , Ana Lopez-Sepulcre , Jose M. Torrelles

We have started a systematic survey of molecular clumps with infall motions to study the very early phase of star formation. Our first step is to utilize the data products by MWISP to make an unbiased survey for blue asymmetric line…

Astrophysics of Galaxies · Physics 2023-06-28 Zhibo Jiang , Shaobo Zhang , Zhiwei Chen , Yang Yang , Shuling Yu , Haoran Feng , Ji Yang , the MWISP group

We present maps of the cosmic large-scale structure around the twelve most distant galaxy clusters from the Massive Cluster Survey (MACS) as traced by the projected surface density of galaxies on the cluster red sequence. Taken with the…

Astrophysics · Physics 2009-11-13 Jeyhan S. Kartaltepe , Harald Ebeling , C. J. Ma , David Donovan

Tracing dust in small dense molecular cores is a powerful tool to study the conditions required for ices to form during the pre-stellar phase. To study these environments, five molecular cores were observed: three with ongoing low-mass star…

Astrophysics of Galaxies · Physics 2021-09-08 Laurie E. U. Chu , Klaus W. Hodapp

We report the results of a SEST 1.2 mm continuum emission survey toward regions previously identified as harbouring a methanol maser and/or an UC HII region, typically indicative of massive star formation. Emission is detected toward all of…

Astrophysics · Physics 2009-11-11 T. Hill , M. G. Burton , V. Minier , M. A. Thompson , A. J. Walsh , M. Hunt-Cunningham , G. Garay

We present high resolution (0.2", 1000 AU) 1.3 mm ALMA observations of massive infrared dark cloud clump, G028.37+00.07-C1, thought to harbor the early stages of massive star formation. Using $\rm N_2D^+$(3-2) we resolve the previously…

Astrophysics of Galaxies · Physics 2018-11-14 Shuo Kong , Jonathan C. Tan , Paola Caselli , Francesco Fontani , Ke Wang , Michael J. Butler

We carried out deep and wide-field near- and mid-infrared observations for a sample of 8 bright-rimmed clouds (BRCs). Supplemented with the $Spitzer$ archival data, we have identified and classified 44 to 433 young stellar objects (YSOs)…

Solar and Stellar Astrophysics · Physics 2016-05-04 Saurabh Sharma , A. K. Pandey , J. Borissova , D. K. Ojha , V. D. Ivanov , K. Ogura , N. Kobayashi , R. Kurtev , M. Gopinathan , Ram Kesh Yadav

Using ISOPHOT maps at 100 and 200um and raster scans at 100, 120, 150 and 200um we have detected four unresolved far-infrared sources in the high latitude molecular cloud L183. Two of the sources are identified with 1.3mm continuum sources…

Astrophysics · Physics 2009-11-07 K. Lehtinen , K. Mattila , D. Lemke , M. Juvela , T. Prusti , R. Laureijs

We describe far infrared observations of early-type galaxies selected from the ISO archive. This rather inhomogeneous sample includes 39 giant elliptical galaxies and 14 S0 (or later) galaxies. These galaxies were observed using a variety…

Astrophysics · Physics 2016-08-30 Pasquale Temi , Fabrizio Brighenti , William G. Mathews , Jesse D. Bregman

We present molecular line imaging observations of three massive molecular outflow sources, G333.6-0.2, G333.1-0.4, and G332.8-0.5, all of which also show evidence for infall, within the G333 giant molecular cloud (GMC). All three are within…

Astrophysics of Galaxies · Physics 2015-09-14 N. Lo , B. Wiles , M. P. Redman , M. R. Cunningham , I. Bains , P. A. Jones , M. G. Burton , L. Bronfman

We present a multiwavelength study of five methanol maser sites which are not directly associated with a strong ($>100$ mJy) radio continuum source: G 31.28+0.06, G 59.78+0.06, G 173.49+2.42 (S231, S233IR), G 188.95+0.89 (S252, AFGL5180)…

Astrophysics · Physics 2009-11-10 V. Minier , M. G. Burton , T. Hill , M. R. Pestalozzi , C. R. Purcell , G. Garay , A. Walsh , S. Longmore

Crucial steps in the formation of stars and planets can be studied only at mid-infrared to far-infrared wavelengths, where SIRTF provides an unprecedented improvement in sensitivity. We will use all three SIRTF instruments (IRAC, MIPS, and…

Astrophysics · Physics 2008-11-26 Neal J. Evans

Understanding the physical properties of star-forming cores as mass reservoirs for protostars, and the impact of turbulence, is crucial in star formation studies. We implemented passive tracer particles in clump-scale numerical simulations…

Astrophysics of Galaxies · Physics 2025-01-08 Shingo Nozaki , Hajime Fukushima , Kazuki Tokuda , Masahiro N. Machida

A proto-cluster core is the most massive dark matter halo (DMH) in a given proto-cluster. To reveal the galaxy formation in core regions, we search for proto-cluster cores at $z\sim 2$ in $\sim 1.5\, \mathrm{deg}^{2}$ of the COSMOS field.…

Astrophysics of Galaxies · Physics 2020-06-24 Makoto Ando , Kazuhiro Shimasaku , Rieko Momose

Since most high- and intermediate-mass protostars are at great distance and form in clusters, high linear resolution observations are needed to investigate their physical properties. To study the gas in the innermost region around the…

Astrophysics · Physics 2009-11-13 S. Leurini , H. Beuther , P. Schilke , F. Wyrowski , Q. Zhang , K. M. Menten

The mass growth of protostars is a central element to the determination of fundamental stellar population properties such as the initial mass function. Constraining the accretion history of individual protostars is therefore an important…

The fate of massive cold clumps, their internal structure and collapse need to be characterised to understand the initial conditions for the formation of high-mass stars, stellar systems, and the origin of associations and clusters. We…

We study the structure and kinematics of nine 0.1 pc-scale cores in Orion with the IRAM 30-m telescope and at higher resolution eight of the cores with CARMA, using CS(2-1) as the main tracer. The single-dish moment zero maps of the…

Astrophysics of Galaxies · Physics 2015-06-16 Katherine I. Lee , Leslie W. Looney , Scott Schnee , Zhi-Yun Li