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相关论文: Molecular hydrogen jets and outflows in the Serpen…

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Context. Outflows provide indirect means to get an insight on diverse star formation associated phenomena. On scales of individual protostellar cores, outflows combined with intrinsic core properties can be used to study the mass…

星系天体物理 · 物理学 2015-05-19 O. Dionatos , B. Nisini , C. Codella , T. Giannini

We present the results of a narrow-band near-infrared imaging survey for Molecular Hydrogen emission-line Objects (MHOs) toward 26 regions containing high-mass protostellar candidates and massive molecular outflows. We have detected a total…

太阳与恒星天体物理 · 物理学 2017-07-26 G. Wolf-Chase , K. Arvidsson , M. Smutko

We present wide-field near-IR images of Orion A. K and H2 1-0S(1) images of a contiguous 8 sqr degree region are compared to photometry from Spitzer and dust-continuum maps obtained with MAMBO and SCUBA. We also measure proper motions for…

We have performed an unbiased deep near-infrared survey toward the Aquila molecular cloud with a sky coverage of ~1 deg2. We identified 45 molecular hydrogen emission-line objects(MHOs), of which only 11 were previously known. Using the…

太阳与恒星天体物理 · 物理学 2015-08-19 Miaomiao Zhang , Min Fang , Hongchi Wang , Jia Sun , Min Wang , Zhibo Jiang , Sumedh Anathpindika

We aim to take a census of molecular hydrogen emission line objects (MHOs) in the Rho Ophiuchi molecular cloud and to make the first systematic proper motion measurements of these objects in this region. Deep H2 near-infrared imaging is…

太阳与恒星天体物理 · 物理学 2015-06-15 M. Zhang , W. Brandner , H. Wang , M. Gennaro , A. Bik , Th. Henning , R. Gredel , M. Smith , Th. Stanke

This poster presents single-dish and aperture-synthesis observations of the J=1-0 (lambda~3 mm) transitions of HCO+, HCN, and N2H+ towards the Serpens star-forming region. Jets driven by young stars affect the structure and the chemistry of…

天体物理学 · 物理学 2007-05-23 Michiel R. Hogerheijde

We present a catalogue of Molecular Hydrogen emission-line Objects (MHOs) in outflows from young stars, most of which are embedded. All objects are identified in the near-infrared lines of molecular hydrogen, all reside in the Milky Way,…

太阳与恒星天体物理 · 物理学 2015-05-14 Christopher J. Davis , Ryan Gell , Tigran Khanzadyan , Michael D. Smith , Tim Jenness

Molecular outflows driven by protostellar cluster members likely impact their surroundings and contribute to turbulence, affecting subsequent star formation. The very young Serpens South cluster consists of a particularly high density and…

太阳与恒星天体物理 · 物理学 2015-06-24 Adele L. Plunkett , Hector G. Arce , Stuartt A. Corder , Michael M. Dunham , Guido Garay , Diego Mardones

We present the N2H+(J=1-0) map of the Serpens South molecular cloud obtained as part of the CARMA Large Area Star Formation Survey (CLASSy). The observations cover 250 square arcminutes and fully sample structures from 3000 AU to 3 pc with…

Jets and outflows from Young Stellar Objects (YSOs) are important signposts of currently ongoing star formation. In order to study these objects we are conducting an unbiased survey along the Galactic Plane in the 1-0S(1) emission line of…

星系天体物理 · 物理学 2015-06-03 G. Ioannidis , D. Froebrich

We present H13CO+ (J=1-0) and HNC (J=1-0) maps of regions in Serpens South, Serpens Main and NGC 1333 containing filaments. We also observe the Serpens regions using H13CN (J=1-0). These dense gas tracer molecular line observations carried…

星系天体物理 · 物理学 2018-02-21 Arnab Dhabal , Lee G. Mundy , Maxime J. Rizzo , Shaye Storm , Peter Teuben

The infrared young stellar outflow source MHO 3252 Y3 in the Serpens South star-forming region was found to be variable. The available photometric data can be fitted with a double peaked light curve of 904 d period. Color variations are…

太阳与恒星天体物理 · 物理学 2018-09-19 Klaus W. Hodapp , Rolf Chini

The fastest molecular component to the protostellar outflows -- extremely high-velocity (EHV) molecular jets -- are still puzzling since they are seen only rarely. The first aim is to analyze the interaction between the EHV jet and the slow…

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

Jets and outflows are the early signposts of stellar birth. Using the UKIRT Wide Field Infrared Survey for H2 (UWISH2) at 2.12 micron, 127 outflows are identified in molecular cloud complexes Vulpecula OB1 and IRDC G53.2 covering 12 square…

星系天体物理 · 物理学 2024-03-22 Manish Chauhan , Manash Samal , Anandmayee Tej , Dirk Froebrich

Jets and outflows are the first signposts of stellar birth. Emission in the H2 1-0S(1) line at 2.122 micron is a powerful tracer of shock excitation in these objects. Here we present the analysis of 2.0 x 0.8 square degrees data from the UK…

星系天体物理 · 物理学 2018-06-06 Manash R. Samal , Wen-Ping Chen , Michihiro Takami , Jessy Jose , Dirk Froebrich

We present deep 1.4-4.8 um JWST-NIRCam imaging of the Serpens Main star-forming region and identify 20 candidate protostellar outflows, most with bipolar structure and identified driving sources. The outflow position angles (PAs) are…

太阳与恒星天体物理 · 物理学 2024-08-16 Joel D. Green , Klaus M. Pontoppidan , Megan Reiter , Dan M. Watson , Sachindev S. Shenoy , P. Manoj , Mayank Narang

Using the Karl G. Jansky Very Large Array (VLA), we have conducted a survey for 22 GHz, 6_{1,6}-5_{2,3} H2O masers toward the Serpens South region. The masers were also observed with the Very Long Baseline Array (VLBA) following the VLA…

We have mapped the large-scale structure of the Serpens cloud core using moderately optically thick (13CO(1--0) and CS(2--1)) and optically thin tracers (C18O(1--0), C34S(2--1), and N2H+(1--0)), using the 16-element focal plane array…

天体物理学 · 物理学 2009-11-07 L. Olmi , L. Testi

We have mapped the dense gas distribution and dynamics in the NW region of the Serpens molecular cloud in the CS(2-1) and N2H+(1-0) lines and 3 mm continuum using the FCRAO telescope and BIMA interferometer. 7 continuum sources are found.…

天体物理学 · 物理学 2009-10-31 Jonathan P. Williams , Philip C. Myers
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