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We performed spectral line observations of CO J=2-1, 13CO J=1-0, and C18O J=1-0 and polarimetric observations in the 1.3 mm continuum and CO J=2-1 toward a multiple protostar system, L1448 IRS 3, in the Perseus molecular complex at a…

天体物理学 · 物理学 2008-11-26 Woojin Kwon , Leslie W. Looney , Richard M. Crutcher , Jason M. Kirk

We introduce a study of the massive star forming region IRAS 18144--1723 using observations of the 6.7 GHz methanol maser line. Such regions are opaque at short wavelengths but can be observed through radio emission lines. In this study we…

太阳与恒星天体物理 · 物理学 2022-12-07 Esraa Khafagy , khaled A. Edris , Osama M. Shalabiea , Anna Bartkiewicz , Anita M. S. Richards , Zainab Awad

Direct observations of accretion disks around high-mass young stellar objects would help to discriminate between different models of formation of massive stars. However, given the complexity of massive star forming regions, such studies are…

太阳与恒星天体物理 · 物理学 2015-05-27 S. Leurini , C. Codella , L. Zapata , M. T. Beltran , P. Schilke , R. Cesaroni

We present new narrow-band near-infrared images together with K band spectra of highly collimated bipolar jets close to the IRAS 05487+0255 source. The jets are located at 50" West of the Herbig-Haro 110 outflow. The jets are not visible at…

天体物理学 · 物理学 2009-10-30 P. Garnavich , A. Noriega-Crespo , A. Raga , K. H. Bohm

We report high angular-resolution (~1") CO J=3--2 interferometric mapping, using the Submillimeter Array (SMA), of IRAS22036+5306 (I22036), a bipolar pre-planetary nebula (PPN) with knotty jets discovered in our HST SNAPshot survey of young…

天体物理学 · 物理学 2008-11-26 R. Sahai , K. Young , N. A. Patel , C. S'anchez Contreras , M. Morris

We report the initial result of an adaptive-optics assisted, optical integral-field-unit observation on IRAS04576+0912, the nearest (z=0.039) active galactic nucleus with a prominent blueshift/tail in [O III] emission from a sample of such…

We present 12CO (J=2-1) sensitive molecular line and 1.3 mm continuum observations made with the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations…

太阳与恒星天体物理 · 物理学 2023-03-01 J. A. López-Vázquez , Luis A. Zapata , Chin-Fei Lee

The emission-lines in the active galaxy IRAS\,0421+0400 show a dramatic ($\sim$\,900\kms) increase in the velocity spread at the position of radio hot-spots which are located at the beginning of extended radio lobes. We study a simple…

天体物理学 · 物理学 2015-06-24 W. Steffen , A. J. Holloway , A. Pedlar

We report the arcsecond resolution SMA observations of the $^{12}$CO (2-1) transition in the massive cluster forming region G10.6-0.4. In these observations, the high velocity $^{12}$CO emission is resolved into individual outflow systems,…

太阳与恒星天体物理 · 物理学 2015-05-20 Hauyu Baobab Liu , Paul T. P. Ho , Qizhou Zhang

We present interferometric observations in the 12CO (2-1) line and at 1.3 mm dust continuum of the low-mass protostellar binary system in the cometary globule CG30, using the Submillimeter Array. The dust continuum images resolve two…

天体物理学 · 物理学 2009-11-13 Xuepeng Chen , Tyler L. Bourke , Ralf Launhardt , Thomas Henning

We have mapped the ultracompact HII region, G5.89-0.39, and its molecular surroundings with the Submillimeter Array at 2".8 x 1".8 angular resolution in 1.3 mm continuum, SiO(5-4), and eight other molecular lines. We have resolved for the…

We report detection of a Young Stellar Object with an evidence for an outflow in the form of knots in the molecular hydrogen emission line (2.121 micron) towards the massive star forming region IRAS 06061+2151. Near-infrared images reveal…

天体物理学 · 物理学 2009-11-10 B. G. Anandarao , A. Chakraborty , D. K. Ojha , L. Testi

We present ALMA 12-m, 7-m & Total Power (TP) Array observations of the FU Orionis outbursting system, covering spatial scales ranging from 160 to 25,000 au. The high-resolution interferometric data reveals an elongated $^{12}$CO(2-1)…

(Aims) Hot Dust Obscured Galaxies (Hot DOGs) are a population of hyper-luminous, heavily obscured quasars. Although nuclear obscurations close to Compton-thick are typical, a fraction show blue UV spectral energy distributions consistent…

We present high angular resolution Submillimeter Array (SMA) and Combined Array for Research in Millimeter-wave Astronomy (CARMA) observations of two GLIMPSE Extended Green Objects (EGOs)--massive young stellar object (MYSO) outflow…

太阳与恒星天体物理 · 物理学 2015-03-30 C. J. Cyganowski , C. L. Brogan , T. R. Hunter , E. Churchwell , Q. Zhang

With the recent recognition of a second, distinctive class of molecular outflows, namely the explosive ones not directly connected to the accretion-ejection process in the star formation, a juxtaposition of the morphological and kinematic…

太阳与恒星天体物理 · 物理学 2017-02-22 Luis A. Zapata , Johannes Schmid-Burgk , Luis F. Rodriguez , Aina Palau , Laurent Loinard

We have imaged the extremely high-velocity outflowing gas in CO (2-1) and (3-2) associated with the shell-like ultracompact HII region G5.89-0.39 at a resolution of ~3" (corresponding to ~4000 AU) with the Submillimeter Array. The…

太阳与恒星天体物理 · 物理学 2015-06-03 Yu-Nung Su , Sheng-Yuan Liu , Huei-Ru Chen , Ya-Wen Tang

We present observations of the embedded massive young stellar object (YSO) candidate 08576nr292, obtained with X-shooter and SINFONI on the ESO Very Large Telescope (VLT). The flux-calibrated, medium-resolution X-shooter spectrum (300 -…

太阳与恒星天体物理 · 物理学 2011-04-12 Lucas E. Ellerbroek , Lex Kaper , Arjan Bik , Alex De Koter , Matthew Horrobin , Elena Puga , Hugues Sana , Laurens B. F. M. Waters

We present a detailed kinematical study and modeling of the emission of the molecular cores at ambient velocities surrounding IRAS 21391+5802, an intermediate-mass protostar embedded in IC 1396N. The high-density gas emission is found in…

天体物理学 · 物理学 2009-11-10 Maria T. Beltran , Josep M. Girart , Robert Estalella , Paul T. P. Ho

This study aims to determine the main physical parameters (N(H2) hydrogen column density and Td dust temperature) of the Interstellar medium, and their distribution in the extended star-forming region, which includes IRAS 05156+3643,…

星系天体物理 · 物理学 2021-12-08 E. H. Nikoghosyan , N. M. Azatyan , D. H. Andreasyan , D. S. Baghdasaryan