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相关论文: A Mapping Survey of Dense Clumps Associated with E…

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We studied the distribution of dense gas in a filamentary molecular cloud containing several dense clumps. The center of the filament is given by the dense clump WB673. The clumps are high-mass and intermediate-mass star-forming regions. We…

星系天体物理 · 物理学 2017-12-22 M. S. Kirsanova , S. V. Salii , A. M. Sobolev , A. O. H. Olofsson , D. A. Ladeyschikov , M. Thomasson

We used the CSO 10.4 meter telescope to image the 350 micron and 450 micron continuum and CO J=6-5 line emission of the IRAS 20126+4104 clump. The continuum and line observations show that the clump is isolated over a 4 pc region and has a…

天体物理学 · 物理学 2009-11-13 Hiroko Shinnaga , Thomas G. Phillips , Ray S. Furuya , Riccardo Cesaroni

We performed a detailed study of the high-mass clump interacting with bubble N10 based on the spectral lines $^{12}CO(3-2)$, $HCO^+(4-3)$, $N_2H^+(4-3)$ and $CH_3OH(7(0,7)-6(0,6))$ and continuum emission data at 450 $\mu$m and 850 $\mu$m…

太阳与恒星天体物理 · 物理学 2015-06-15 Yingxiu Ma , Jianjun Zhou , Jarken. Esimbek , Weiguang Ji , Gang Wu , Ye Yuan

Localised regions of enhanced emission from HCO+, NH3 and other species near Herbig-Haro objects (HHOs) have been interpreted as arising in a photochemistry stimulated by the HHO radiation on high density quiescent clumps in molecular…

太阳与恒星天体物理 · 物理学 2011-08-22 Helen Christie , Serena Viti , David Williams , Josep-Miquel Girart , Oscar Morata

Recent models and simulations of cluster formation within molecular clumps consider multi-scale, hierarchical accretion, which leads to clump mass growth over time. This mode of mass accumulation could have implications regarding the…

星系天体物理 · 物理学 2026-03-11 Nicholas Larose , C. R. Kerton , Kathryn Devine , Grace Wolf-Chase

To investigate the effects of stellar feedback on the gravitational state of giant molecular clouds (GMCs), we study $^{12}$CO and $^{13}$CO ALMA maps of nine GMCs distributed throughout the Large Magellanic Cloud (LMC), the nearest…

We examine the nature of kpc-scale clumps seen in high-redshift galaxies using a suite of cosmological simulations of galaxy formation. We identify rest-frame UV clumps in mock HST images smoothed to 500 pc resolution, and compare them with…

星系天体物理 · 物理学 2022-08-16 Xi Meng , Oleg Y. Gnedin

We mapped a 13 by 22 pc region in emission from 492 GHz [C I] and, for the first time, 551 GHz ^{13}CO(5-4) in the giant molecular cloud M17SW, using the Submillimeter Wave Astronomy Satellite. The morphologies of the [C I] and ^{13}CO…

We present the results of CO ($J=3-2$) and HCO$^+$ ($J=4-3$) mapping observations toward a nearby embedded cluster, Serpens South, using the ASTE 10 m telescope. Our CO ($J=3-2$) map reveals that many outflows are crowded in the dense…

Infrared Dark Clouds are expected to harbor sources in different, very young evolutionary stages. To better characterize these differences, we observed a sample of 43 massive Infrared Dark Clouds, originally selected as candidate high-mass…

天体物理学 · 物理学 2019-08-19 H. Beuther , T. K. Sridharan

To study the early phases of massive star formation, we present ALMA observations of SiO(5-4) emission and VLA observations of 6 cm continuum emission towards 32 Infrared Dark Cloud (IRDC) clumps, spatially resolved down to $\lesssim 0.05$…

星系天体物理 · 物理学 2021-11-17 Mengyao Liu , Jonathan C. Tan , Joshua Marvil , Shuo Kong , Viviana Rosero , Paola Caselli , Giuliana Cosentino

Abridged: We study the properties of clumps formed in three-dimensional weakly magnetized magneto-hydrodynamic simulations of converging flows in the thermally bistable, warm neutral medium (WNM). We find that: (1) Similarly to the…

天体物理学 · 物理学 2015-05-13 Robi Banerjee , Enrique Vazquez-Semadeni , Patrick Hennebelle , Ralf Klessen

We use high-resolution Hubble Space Telescope imaging data of dwarf galaxies in the Local Volume ($\lesssim 11$ Mpc) to parameterise 19 newly discovered nuclear star clusters (NSCs). Most of the clusters have stellar masses of…

星系天体物理 · 物理学 2023-02-01 Nils Hoyer , Nadine Neumayer , Anil C. Seth , Iskren Y. Georgiev , Jenny E. Greene

We present the first survey of dense gas towards Planck Galactic Cold Clumps (PGCCs). Observations in the J=1-0 transitions of HCO+ and HCN towards 621 molecular cores associated with PGCCs were performed using the Purple Mountain…

星系天体物理 · 物理学 2016-03-23 Jinghua Yuan , Yuefang Wu , Tie Liu , Tianwei Zhang , Jin Zeng Li , Hong-Li Liu , Fanyi Meng , Ping Chen , Runjie Hu , Ke Wang

We present a statistical analysis of a sample of 20 strong lensing clusters drawn from the Local Cluster Substructure Survey (LoCuSS), based on high resolution Hubble Space Telescope imaging of the cluster cores and follow-up spectroscopic…

Resolved stellar morphology of $z>1$ galaxies was inaccessible before JWST. This limitation, due to the impact of dust on rest-frame UV light, had withheld major observational conclusions required to understand the importance of clumps in…

星系天体物理 · 物理学 2025-01-30 Boris S. Kalita , John D. Silverman , Emanuele Daddi , Wilfried Mercier , Luis C. Ho , Xuheng Ding

To characterize a bright-rimmed cloud embedded in the HII region Sh2-48 searching for evidence of triggered star formation. We carried out observations towards a region of 2'x2' centered at RA=18h 22m 11.39s, dec.=-14deg 35m 24.81s (J2000)…

星系天体物理 · 物理学 2015-06-16 M. E. Ortega , S. Paron , E. Giacani , M. Rubio , G. Dubner

We studied the cloud-cloud collision candidate G323.18+0.15 based on signatures of induced filaments, clumps, and star formation. We used archival molecular spectrum line data from the SEDIGISM $^{13}$CO($J$\,=\,2--1) survey, from the Mopra…

In order to precisely determine temperature and density of molecular gas in the Large Magellanic Cloud, we made observations of optically thin $^{13}$CO($J=3-2$) transition by using the ASTE 10m telescope toward 9 peaks where…

We present BIMA and SCUBA observations of the young cluster associated with BD +40 4124 in the dense molecular gas tracer CS J=2-1 and the continuum dust continuum at 3.1 mm and 850 micron. The dense gas and dust in the system is aligned…

天体物理学 · 物理学 2009-11-11 L. W. Looney , S. Wang , M. Hamidouche , P. N. Safier , R. Klein