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相关论文: Giant protostellar outflows revealed by infrared i…

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In order to elucidate the nature of the brightest infrared sources associated with IRAS 20343+4129, IRS1 and IRS3, we observed with the Submillimeter Array (SMA) the 1.3 mm continuum and CO(2-1) emission of the region. Faint millimeter dust…

天体物理学 · 物理学 2009-11-13 Aina Palau , Robert Estalella , Paul T. P. Ho , Henrik Beuther , Maria T. Beltrán

We performed interferometric observations of a high-mass protostellar candidate IRAS 18566+0408 in the \nh3 (J,K)=(1,1), (2,2) and (3,3) inversion transitions, the SiO J=2-1 and HCN J=1-0 lines, and the 43 and 87 GHz continuum emission…

天体物理学 · 物理学 2009-11-13 Qizhou Zhang , T. K. Sridharan , Todd R. Hunter , Yuan Chen , Henrik Beuther , Friedrich Wyrowski

We present molecular line, H2O maser, radio continuum and near infrared maps of the bipolar outflow source AFGL5142. The high resolution of our molecular CO observations enables us to define the morphology of the large-scale bipolar outflow…

We present results of 1.3mm interferometric and single-dish observations of the center of the L1641-N cluster in Orion. Single-dish wide-field continuum and CO(2-1) observations reveal the presence of several molecular outflows driven by…

天体物理学 · 物理学 2008-11-26 Thomas Stanke , Jonathan P. Williams

The GGD27 complex includes the HH 80-81-80N system, which is one of the most powerful molecular outflows associated with a high mass star-forming region observed up to now. This outflow is powered by the star associated with the source IRAS…

太阳与恒星天体物理 · 物理学 2015-05-20 M. Fernández-López , S. Curiel , J. M. Girart , P. T. P. Ho , N. Patel , Y. Gomez

We present new details of the structure and morphology of the jets and outflows in HH46/47 as seen in Spitzer infrared images from IRAC and MIPS, reprocessed using the ``HiRes'' deconvolution technique. HiRes improves the visualization of…

天体物理学 · 物理学 2009-06-23 T. Velusamy , W. D. Langer , K. A. Marsh

Aims: Revealing the fragmentation, infall, and outflow processes in the immediate environment around massive young stellar objects is crucial for understanding the formation of the most massive stars. Methods: With this goal in mind we…

太阳与恒星天体物理 · 物理学 2015-06-17 H. Beuther , H. Linz , Th. Henning

We present new HST/WFC3-IR narrowband [Fe II] images of protostellar jets in the Carina Nebula. Combined with 5 previously published sources, we have a sample of 18 jets and 2 HH objects. All of the jets we targeted with WFC3 show bright…

太阳与恒星天体物理 · 物理学 2016-09-21 Megan Reiter , Nathan Smith , John Bally

Context: Jets and outflows are key ingredients in the formation of stars across the mass spectrum. In clustered regions, understanding powering sources and outflow components poses a significant problem. Aims: To understand the dynamics in…

太阳与恒星天体物理 · 物理学 2015-02-25 P. D. Klaassen , K. G. Johnston , S. Leurini , L. A. Zapata

We have observed the central region of the IR-dark cloud filament associated with IRAS 18507+0121 at millimeter wavelengths in CO(1-0), 13CO(1-0), and C18O(1-0) line emission and with the Spitzer Space Telescope at mid-IR wavelengths. Five…

We have performed observations of water maser emission towards a sample of low-mass protostars, in order to investigate the properties of jets associated with the earliest stages of star formation and their interaction with the surrounding…

星系天体物理 · 物理学 2015-05-13 J. -F. Desmurs , C. Codella , J. Santiago-Garcia , M. Tafalla , R. Bachiller

Recently X-ray emission from protostellar jets has been detected with both XMM-Newton and Chandra satellites, but the physical mechanism which can give rise to this emission is still unclear. We performed an extensive exploration of a wide…

天体物理学 · 物理学 2009-11-11 R. Bonito , S. Orlando , G. Peres , F. Favata , R. Rosner

We present and discuss \emph{Spitzer} and near-infrared H$_{2}$ observations of a new bi-polar protostellar outflow in the Rosette Molecular Cloud. The outflow is seen in all four IRAC bands and partially as diffuse emission in the MIPS 24…

太阳与恒星天体物理 · 物理学 2015-05-18 Jason E. Ybarra , Elizabeth A. Lada , Zoltan Balog , Scott W Fleming , Randy L. Phelps

We present constraints on the molecular outflows in a sample of five Hyper-Luminous Infrared Galaxies using Herschel observations of the OH doublet at 119 {\mu}m. We have detected the OH doublet in three cases: one purely in emission and…

星系天体物理 · 物理学 2016-07-27 D. Calderón , F. E. Bauer , S. Veilleux , J. Graciá-Carpio , E. Sturm , P. Lira , S. Schulze , S. Kim

We present a census of molecular outflows across four active regions of star formation in the Perseus molecular cloud (NGC 1333, IC348/HH211, L1448 and L1455), totalling an area of over 1000 sq arcmin. This is one of the largest surveys of…

星系天体物理 · 物理学 2015-05-19 Emily I. Curtis , John S. Richer , Jonathan J. Swift , Jonathan P. Williams

We present here an extensive analysis of the protostellar jet driven by IRAS 20126+4104, deriving the kinematical, dynamical, and physical conditions of the H2 gas along the flow. The jet has been investigated by means of near-IR H2 and…

天体物理学 · 物理学 2015-05-13 A. Caratti o Garatti , D. Froebrich , J. Eisloeffel , T. Giannini , B. Nisini

Extremely high velocity emission likely related to jets is known to occur in some proto-Planetary Nebulae. However, the molecular complexity of this kinematic component is largely unknown. We observed the known extreme outflow from the…

We have discovered 12 new molecular hydrogen emission-line objects (MHOs) in the vicinity of the candidate massive young stellar object Mol 121, in addition to five that were previously known. H2 2.12-micron/H2 2.25-micron flux ratios…

星系天体物理 · 物理学 2015-06-12 G. Wolf-Chase , K. Arvidsson , M. Smutko , R. Sherman

We analyze the molecular gas and dust associated with the infrared dark cloud SDC 341.232-0.268 in order to investigate the characteristics and parameters of the gas, determine the evolutionary status of four embedded EGO candidates and…

星系天体物理 · 物理学 2020-01-15 M. M. Vazzano , C. E. Cappa , V. Firpo , C. H. López-Caraballo , M. Rubio , N. U. Duronea