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We present high angular resolution interferometric observations of the dust continuum at 2.7 and 1.3 mm, and of the HC3N (12-11) and C18O (2-1) emission around L1157-mm, a Class~0 object that drives a spectacular molecular outflow. The…

天体物理学 · 物理学 2009-11-10 M. T. Beltran , F. Gueth , S. Guilloteau , A. Dutrey

We use ALMA CO(1-0) observations and VLT/MUSE rest-frame optical data of the ultraluminous infrared galaxy (ULIRG) IRAS20100-4156 at $z=0.1297$ to characterize its powerful outflow in multiple phases using tracers of cold molecular,…

星系天体物理 · 物理学 2026-03-10 B. Hagedorn , C. Cicone , M. Sarzi , P. Severgnini , C. Vignali

We present high-spatial resolution 21-cm HI VLA observations of the radio galaxy 3C305 (z=0.041). These new high-resolution data show that the ~1000 km/s broad HI absorption, earlier detected in low-resolution WSRT observations, is…

天体物理学 · 物理学 2009-11-11 R. Morganti , T. A. Oosterloo , C. N. Tadhunter , G. van Moorsel , B. Emonts

The Galactic Center's giant outflows are manifest in three different, non-thermal phenomena: i) the hard-spectrum, \gamma-ray `Fermi Bubbles' emanating from the nucleus and extending to |b| ~ 50 degrees; ii) the hard-spectrum,…

高能天体物理现象 · 物理学 2015-07-30 Roland M. Crocker , Geoffrey V. Bicknell , Andrew M. Taylor , Ettore Carretti

We present molecular line observations of the protostellar outflow associated with HH270mms1 in the Orion B molecular cloud with ALMA. The 12CO(J = 3 - 2) emissions show that the outflow velocity structure consists of four distinct…

星系天体物理 · 物理学 2024-03-19 Mitsuki Omura , Kazuki Tokuda , Masahiro N. Machida

VLA and Parkes 64 m radiotelescope 21-cm observations of the starburst dwarf galaxy NGC 5253 reveal a multi-component non-axisymmetric HI distribution. The component associated with the stellar body shows evidence for a small amount of…

天体物理学 · 物理学 2009-11-13 Henry A. Kobulnicky , Evan. D. Skillman

We investigate the connection between galactic outflows and star formation using two independent data sets covering a sample of 22 galaxies between $1 \lesssim z \lesssim 1.5$. The HST WFC3/G141 grism provides low spectral resolution, high…

星系天体物理 · 物理学 2021-04-14 Nikolaus Z. Prusinski , Dawn K. Erb , Crystal L. Martin

The morphology, kinematics and entrainment mechanism of the HH 46/47 molecular outflow were studied using new ALMA Cycle 0 observations. Results show that the blue and red lobes are strikingly different. We argue that these differences are…

太阳与恒星天体物理 · 物理学 2015-06-15 Hector G. Arce , Diego Mardones , Stuartt A. Corder , Guido Garay , Alberto Noriega-Crespo , Alejandro C. Raga

12CO 1-0,2-1,4-3,7-6, and 13CO 1-0, 2-1, and 3-2 line was mapped with angular resolutions of 13" - 22" toward the nuclear region of starburst galaxy M82. The difference of lobe spacings in submillimeter (~15") and millimeter (~26") lines…

天体物理学 · 物理学 2007-05-23 R. Q. Mao , C. Henkel , A. Schulz , M. Zielinsky , R. Mauersberger , H. Stoerzer , T. L. Wilson , P. Gensheimer

Recent submillimeter observations have revealed signs of pc-scale molecular inflow and atomic outflow in the nearest Seyfert 2 galaxy, the Circinus galaxy. To verify the gas kinematics suggested by these observations, we performed molecular…

星系天体物理 · 物理学 2024-03-19 Shunsuke Baba , Keiichi Wada , Takuma Izumi , Yuki Kudoh , Kosei Matsumoto

We present ALMA Cycle 1 observations of the HH46/47 molecular outflow using combined 12m array and ACA observations. The improved angular resolution and sensitivity of our multi-line maps reveal structures that help us study the entrainment…

We have performed a deep [SII]6717/6731 wide field Herbig-Haro (HH) object survey toward the Vela C molecular cloud with a sky coverage of about 2 deg2. In total, 18 new HH objects, HH 1090-1107, are discovered and the two previously known…

太阳与恒星天体物理 · 物理学 2015-06-19 Miaomiao Zhang , Hongchi Wang , Thomas Henning

High spatial resolution low-J 12CO observations have shown that the wide-angle outflow seen in the Orion BN/KL region correlates with the famous H2 fingers. Recently, high-resolution large-scale mappings of mid- and higher-J CO emissions…

星系天体物理 · 物理学 2012-09-04 T. -C. Peng , L. A. Zapata , F. Wyrowski , R. Güsten , K. M. Menten

We present a unified picture of outflowing gas from the X-ray binary system Hercules X-1/HZ Herculis. We suggest that the outflowing gas (a wind) causes UV emission seen in mid-eclipse, narrow UV absorption lines, and broad UV P Cygni…

天体物理学 · 物理学 2009-11-07 Bram Boroson , Tim Kallman , Saeqa Dil Vrtilek

The formation mechanisms of intensely starbursting galaxies at high redshift remain unknown. One possible mechanism for triggering these starbursts is mergers and interactions, but detecting these at high redshift remains a challenge.…

During the formation of a star, material is ejected along powerful jets that impact the ambient material. This outflow regulates star formation by e.g. inducing turbulence and heating the surrounding gas. Understanding the associated shocks…

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…

星系天体物理 · 物理学 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 near infrared images in H2 at 2.12um of the HH 7/11 outflow and its driving source SVS 13 taken with HST NICMOS 2 camera, as well as archival Ha and [SII] optical images obtained with the WFPC2 camera. The NICMOS high angular…

天体物理学 · 物理学 2009-11-07 A. Noriega-Crespo , A. Cotera , E. Young , H. Chen

We examine an Infrared Dark Cloud (IRDC) at high spatial resolution as a means to study rotation, outflow, and infall at the onset of massive star formation. Submillimeter Array observations combined with IRAM 30 meter data in 12CO(2--1)…

太阳与恒星天体物理 · 物理学 2015-05-13 C. Fallscheer , H. Beuther , Q. Zhang , E. Keto , T. K. Sridharan

(Abridged) We combine data from The HI Nearby Galaxy Survey and the GALEX Nearby Galaxy Survey to study the relationship between atomic hydrogen (HI) and far-ultraviolet (FUV) emission outside the optical radius (r25) in 17 spiral and 5…

宇宙学与河外天体物理 · 物理学 2015-05-19 F. Bigiel , A. Leroy , F. Walter , L. Blitz , E. Brinks , W. J. G. de Blok , B. Madore