English
Related papers

Related papers: The molecular cloud S242: physical environment and…

200 papers

The 30 Doradus region in the Large Magellanic Cloud is one of the most outstanding star forming regions of the Local Group and a primary target to study star formation in an environment of low metallicity. In order to obtain a more complete…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 M. Rubio , S. Paron , G. Dubner

We present Very Large Array C, X, and Q-band continuum observations, as well as 1.3 mm continuum and CO(2-1) observations with the Submillimeter Array toward the high-mass protostellar candidate ISOSS J23053+5953 SMM2. Compact cm continuum…

Astrophysics of Galaxies · Physics 2021-09-06 T. M. , Rodríguez , P. Hofner , E. D. Araya , Q. Zhang , H. Linz , S. Kurtz , L. Gómez , C. Carrasco-González , V. Rosero

A new molecular hydrogen cloud is found in the sub-damped Ly-alpha absorber [log N(HI)=19.88+/-0.05] at the redshift z=1.15 toward the bright quasar HE0515-4414 (zem = 1.71). More than 30 absorption features in the Lyman band system of H2…

Astrophysics · Physics 2009-11-10 D. Reimers , R. Baade , R. Quast , S. A. Levshakov

A longstanding prediction in interstellar theory posits that significant quantities of molecular gas, crucial for star formation, may be undetected due to being ``dark" in commonly used molecular gas tracers, such as carbon monoxide. We…

We report the observational findings of the Sh2-112 H{\sc ii} region by using the multiwavelength data analysis ranging from optical to radio wavelengths. This region is powered by a massive O8V-type star BD +45 3216. The surface density…

Solar and Stellar Astrophysics · Physics 2020-12-23 Neelam Panwar , Saurabh Sharma , D. K. Ojha , Tapas Baug , L. K. Dewangan , B. C. Bhatt , Rakesh Pandey

The radiative feedback of massive stars on molecular clouds creates pillars, globules and other features at the interface between the HII region and molecular cloud. We present here Herschel observations between 70 and 500 micron of the…

We present a multi-wavelength study of the filamentary cloud G47 (d $\sim$4.44 kpc), which hosts the mid-infrared bubbles N98, B1, and B2. The SMGPS 1.3 GHz continuum map detects ionized emission toward all the bubbles, marking the first…

We present a large-scale simultaneous survey of the CO isotopologues ($\rm {}^{12}{CO}$, $\rm{}^{13}{CO}$, and $\rm{C}{}^{18}{O}$) J = 1 ${-}$ 0 line emission toward the Galactic plane region of l = 106.65$^\circ$ to 109.50$^\circ$ and b =…

Astrophysics of Galaxies · Physics 2022-03-30 Chun-Xue Li , Hong-Chi Wang , Yue-Hui Ma , Miao-Miao Zhang , Chong Li , Yu-Qing Zheng

We report molecular line and dust continuum observations toward the high-mass star forming region G331.5-0.1, one of the most luminous regions of massive star-formation in the Milky Way, located at the tangent region of the Norma spiral…

Astrophysics of Galaxies · Physics 2015-06-16 Manuel Merello , Leonardo Bronfman , Guido Garay , Lars-Ake Nyman , Neal J. Evans , C. Malcolm Walmsley

Recent 1.2-mm continuum observations have shown the giant HII region NGC3576 to be embedded in the centre of an extended filamentary dust-cloud. The bulk of the filament away from the HII region contains a number of clumps seen only at…

Astrophysics of Galaxies · Physics 2009-09-08 C. R. Purcell , V. Minier , S. N. Longmore , Ph. André , A. J. Walsh , P. Jones , F. Herpin , T. Hill , M. R. Cunningham , M. G. Burton

Using Spitzer Space Telescope and Chandra X-ray Observatory data, we identify YSOs in the Rosette Molecular Cloud (RMC). By being able to select cluster members and classify them into YSO types, we are able to track the progression of star…

Solar and Stellar Astrophysics · Physics 2015-06-15 Jason E. Ybarra , Elizabeth A. Lada , Carlos G. Román-Zúñiga , Zoltan Balog , Junfeng Wang , Eric D. Feigelson

We present an analysis of multi-wavelength observations from various datasets and Galactic plane surveys to study the star formation process in the W42 complex. A bipolar appearance of W42 complex is evident due to the ionizing feedback…

Astrophysics of Galaxies · Physics 2015-09-30 L. K. Dewangan , A. Luna , D. K. Ojha , B. G. Anandarao , K. K. Mallick , Y. D. Mayya

We present an analysis of multi-wavelength observations of an area of 0.27 deg x 0.27 deg around the Galactic HII region G18.88-0.49, which is powered by an O-type star (age ~10^5 years). The Herschel column density map reveals a shell-like…

Astrophysics of Galaxies · Physics 2020-11-04 L. K. Dewangan , D. K. Ojha , Saurabh Sharma , S. del Palacio , N. K. Bhadari , A. Das

There is growing evidence that high-mass star formation (HMSF) is a multiscale, dynamical process in molecular clouds, where filaments transport gas material between larger and smaller scales. We analyze here multiscale gas dynamics in an…

Astrophysics of Galaxies · Physics 2024-01-04 Sirong Pan , Hong-Li Liu , Sheng-Li Qin

We present a detailed near-infrared study of an embedded cluster located in the hub of the giant molecular cloud G148.24+00.41 of mass $\sim$10$^5$ $M_\odot$, with the TANSPEC instrument mounted on the 3.6 m Devasthal Optical Telescope. The…

Astrophysics of Galaxies · Physics 2024-08-26 Vineet Rawat , M. R. Samal , D. K. Ojha , Brajesh Kumar , Saurabh Sharma , J. Jose , Ram Sagar , R. K. Yadav

We present Spitzer-IRAC, NOAO 2.1meter-Flamingos, Keck-NIRC, and FCRAO-SEQUOIA observations of the massive star forming complex S254-S258, covering an area of 25x20 arc-minutes. Using a combination of the IRAC and NIR data, we identify and…

Astrophysics · Physics 2014-11-18 L. Chavarria , L. Allen , J. L. Hora , C. Brunt , G. G. Fazio

The star-forming activity in the HII region RCW 42 is investigated using multiple wavebands, from near-infrared to radio wavelengths. Located at a distance of 5.8 kpc, this southern region has a bolometric luminosity of 1.8 $\times$ 10$^6$…

Astrophysics of Galaxies · Physics 2022-08-17 Vipin Kumar , S. Vig , V. S. Veena , S. Mohan , S. K. Ghosh , A. Tej , D. K. Ojha

The mass function (MF) of young ($\mathrm{age\lesssim 200}$ Myr) stellar clumps is an indicator of the mechanism driving the collapse of the interstellar medium (ISM) into giant molecular clouds. Typically, the clump MF in main-sequence…

We present large-field (4.25~$\times$~3.75 deg$^2$) mapping observations toward the Galactic region centered at $l = 150\arcdeg, b = 3.5\arcdeg$ in the $J = 1-0$ emission line of CO isotopologues ($^{12}$CO, $^{13}$CO, and C$^{18}$O), using…

Astrophysics of Galaxies · Physics 2017-03-27 Fang Xiong , Xuepeng Chen , Ji Yang , Min Fang , Shaobo Zhang , Miaomiao Zhang , Xinyu Du , Wenshan Long

Molecular clouds are turbulent structures whose star formation efficiency (SFE) is strongly affected by internal stellar feedback processes. In this paper we determine how sensitive the SFE of molecular clouds is to randomised inputs in the…

Astrophysics of Galaxies · Physics 2019-06-20 Sam Geen , Stuart K. Watson , Joakim Rosdahl , Rebekka Bieri , Ralf S. Klessen , Patrick Hennebelle