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相关论文: A 3D View of Orion: I. Barnard's Loop

200 篇论文

RCW~38 is a uniquely young ($<$1 Myr), embedded ($A_V \sim 10$) stellar cluster surrounding a pair of early O stars ($\sim$O5.5) and is one of the few regions within 2 kpc other than Orion to contain over 1000 members. X-ray and deep…

天体物理学 · 物理学 2008-08-26 Scott J. Wolk , Tyler L. Bourke , Miquela Vigil

We present our analysis of a fully sampled, high resolution dust extinction map of the Barnard 59 complex in the Pipe Nebula. The map was constructed with the infrared color excess technique applied to a photometric catalog that combines…

星系天体物理 · 物理学 2015-05-14 Carlos G. Román-Zúñiga , Charles J. Lada , João F. Alves

Young HII regions are an important site to study O star formation based on distributions of ionized and molecular gas. We revealed that two molecular clouds at $\sim 48$ km s$^{-1}$ and $\sim 53$ km s$^{-1}$ are associated with the HII…

Here we present high spatial resolution (<1 arcsecond) observations of molecular emission in Orion-KL conducted using the Combined Array for Research in Millimeter-Wave Astronomy (CARMA). This work was motivated by recent millimeter…

星系天体物理 · 物理学 2015-06-05 Susanna L. Widicus Weaver , Douglas N. Friedel

Surveys with the Spitzer and Herschel space observatories are now enabling the discovery and characterization of large samples of protostars in nearby molecular clouds, providing the observational basis for a detailed understanding of star…

We present a high angular resolution map of 850 um continuum emission of the Orion Molecular Cloud-3 (OMC 3) obtained with the Submillimeter Array (SMA); the map is a mosaic of 85 pointings covering an approximate area of 6'.5 x 2'.0 (0.88…

星系天体物理 · 物理学 2015-06-12 Satoko Takahashi , Paul T. P. Ho , Paula S. Teixeira , Luis A. Zapata , Yu-Nung Su

LDN 1615/1616 and CB 28 (hereafter, L1616) together form a cometary globule located at an angular distance of about 8 degrees west of the Orion OB1 association, aligned roughly along the east-west direction, and showing a distinct head-tail…

星系天体物理 · 物理学 2022-06-01 Piyali Saha , Archana Soam , Tapas Baug , Maheswar G. , Soumen Mondal , Tuhin Ghosh

Radio continuum, microwave and gamma-ray images of the Milky Way reveal a conspicuous, loop-like structure that fills almost half of the northern Galactic hemisphere, called Loop I. The interior of Loop I is shining in soft X-rays, and its…

星系天体物理 · 物理学 2023-04-27 Rosine Lallement

We present parsec scale interferometric maps of HCN(1-0) and HCO$^{+}$(1-0) emission from dense gas in the star-forming region 30 Doradus, obtained using the Australia Telescope Compact Array. This extreme star-forming region, located in…

Recent advancements in 3D dust mapping have transformed our understanding of the Milky Way's local interstellar medium, enabling us to explore its structure in three spatial dimensions for the first time. In this Letter, we use the most…

星系天体物理 · 物理学 2024-07-17 Gordian Edenhofer , João Alves , Catherine Zucker , Laura Posch , Torsten A. Enßlin

A nebular analysis of the central Orion Nebula and its main structures is presented. We exploit MUSE integral field observations in the wavelength range 4595-9366 \r{A} to produce the first O, S and N ionic and total abundance maps of a…

星系天体物理 · 物理学 2015-12-10 A. F. Mc Leod , P. M. Weilbacher , A. Ginsburg , J. E. Dale , S. Ramsay , L. Testi

We investigate the structure of the core surrounding the recently identified deeply embedded young stellar object Barnard 1c which has an unusual polarization pattern as traced in submillimeter dust emission. Barnard 1c lies within the…

天体物理学 · 物理学 2008-11-26 B. C. Matthews , M. R. Hogerheijde , J. K. Jorgensen , E. A. Bergin

We present a new catalogue of 578 OB cluster (OBC) candidates in the Andromeda galaxy (M31), identified using a MeanShift-based algorithm on HST's F275W-band imaging from the PHAT (Dalcanton et al. 2012) and PHAST (Chen et al. 2025) Hubble…

星系天体物理 · 物理学 2025-09-04 Yuan Liang , Guang-Wei Li , Chao-Wei Tsai , Jingwen Wu

In light of the recent detection of direct evidence for the formation of Kelvin-Helmholtz instabilities in the Orion nebula, we expand upon previous modelling efforts by numerically simulating the shear-flow driven gas and dust dynamics in…

星系天体物理 · 物理学 2015-03-11 T. Hendrix , R. Keppens , P. Camps

We have analyzed new CO($J$ = 1-0) data in the region of a reflection nebula NGC 2023 with a particular focus on the detailed kinematical properties of the molecular gas. The results show that there are two velocity components which…

星系天体物理 · 物理学 2021-07-07 R. Yamada , R. Enokiya , H. Sano , S. Fujita , M. Kohno , D. Tsutsumi , A. Nishimura , K. Tachihara , Y. Fukui

Barnard 207 (B207, LDN 1489, LBN 777), also known as the Vulture Head nebula, is a cometary globule in the Taurus-Auriga-Perseus molecular cloud region. B207 is known to host a Class I protostar, IRAS 04016+2610, located at a projected…

星系天体物理 · 物理学 2017-09-20 Aditya Togi , A. N. Witt , Demi St. John

Interest in stellar feedback has recently increased because new studies suggest that radiative and mechanical feedback from young massive stars regulate the physical and chemical composition of the interstellar medium (ISM) significantly.…

太阳与恒星天体物理 · 物理学 2022-07-27 U. Kavak , J. Bally , J. R. Goicoechea , C. H. M. Pabst , F. F. S. van der Tak , A. G. G. M. Tielens

I review recent studies of the emission-line regions in Orion and M17. Both have similar geometries, a bubble of hot shocked gas surrounding the central star cluster, with H^+, H^0, and H_2 regions, often referred to as H II regions, PDRs,…

天体物理学 · 物理学 2008-12-18 Gary J. Ferland

A major question in the field of star formation is how molecular clouds form out of the diffuse Interstellar Medium (ISM). Recent advances in 3D dust mapping are revolutionizing our view of the structure of the ISM. Using the…