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相关论文: A molecular outflow driven by the brown dwarf bina…

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In this letter a near-infrared integral field study of a proto-brown dwarf candidate is presented. A $\sim$ 0\farcs5 blue-shifted outflow is detected in both H$_{2}$ and [Fe II] lines at V$_{sys}$ = (-35~$\pm$ 2)~km~s$^{-1}$ and V$_{sys}$ =…

太阳与恒星天体物理 · 物理学 2018-03-28 Emma Whelan , Basmah Riaz , Bastien Rouze

We show that the very young brown dwarf candidate ISO217 (M6.25) is driving an intrinsically asymmetric bipolar outflow with a stronger and slightly faster red-shifted component based on spectro-astrometry of forbidden [SII] emission lines…

太阳与恒星天体物理 · 物理学 2015-06-05 V. Joergens , A. Pohl , A. Sicilia-Aguilar , Th. Henning

We report new detections and limits from a NOEMA and ALMA CO(1-0) search for molecular outflows in 13 local galaxies with high FIR surface brightness, and combine with results from the literature. CO line ratios and outflow structure…

We report here our search for molecular outflows from young very low mass stars and brown dwarfs in Taurus and rho Ophiuchi. Using the Submillimeter Array (SMA) and the Combined Array for Research in Millimeter-wave Astronomy (CARMA), we…

太阳与恒星天体物理 · 物理学 2015-05-27 Ngoc Phan-Bao , Chin-Fei Lee , Paul T. P. Ho , Ya-Wen Tang

The origin of outflows and their exact impact on disk evolution and planet formation remain crucial open questions. DG Tau B is a Class I protostar associated with a rotating conical CO outflow and a structured disk. Hence it is an ideal…

太阳与恒星天体物理 · 物理学 2022-12-14 A. de Valon , C. Dougados , S. Cabrit , F. Louvet , L. A. Zapata , D. Mardones

It is now apparent that classical T Tauri-like outflows commonly accompany the formation of young brown dwarfs. To date two optical outflows have been discovered and results presented in this paper increase this number to three. Using…

太阳与恒星天体物理 · 物理学 2009-11-13 E. T. Whelan , T. P. Ray , F. Bacciotti

Massive AGN-driven outflows are invoked by AGN-galaxy co-evolutionary models to suppress both star formation and black hole accretion. Massive molecular outflows have recently been revealed in some AGN hosts. However, the physical…

宇宙学与河外天体物理 · 物理学 2015-06-04 C. Cicone , C. Feruglio , R. Maiolino , F. Fiore , E. Piconcelli , N. Menci , H. Aussel , E. Sturm

We present Atacama Large Millimeter/ sub-millimeter Array (ALMA) observations of V883 Ori, an FU Ori object. We describe the molecular outflow and envelope of the system based on the $^{12}$CO and $^{13}$CO emissions, which together trace a…

太阳与恒星天体物理 · 物理学 2017-05-03 D. Ruíz-Rodríguez , L. A. Cieza , J. P. Williams , D. Principe , J. J. Tobin , Z. Zhu , A. Zurlo

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

Haro 2 , a nearby dwarf starburst dwarf galaxy with strong Ly alpha emission, hosts a starburst that has created outflows and filaments. The clear evidence for galactic outflow makes it an ideal candidate for studying the effects of…

星系天体物理 · 物理学 2020-03-18 Sara C. Beck , Pei-Ying Hsieh , Jean Turner

We present Caltech Submillimeter Observatory CO (2-1) and Spitzer IRAC observations toward IRAS 22506+5944, which is a 10$^4$ $L_{\odot}$ massive star-forming region. The CO (2-1) maps show an east-west bipolar molecular outflow originating…

星系天体物理 · 物理学 2018-03-09 Zeqiang Xie , Keping Qiu

The 100 square degree FCRAO CO survey of the Taurus molecular cloud provides an excellent opportunity to undertake an unbiased survey of a large, nearby, molecular cloud complex for molecular outflow activity. Our study provides information…

太阳与恒星天体物理 · 物理学 2015-06-05 Gopal Narayanan , Ronald Snell , Ashley Bemis

We have obtained ALMA Band 7 observations of the FU Ori outburst system at 0.6"x0.5" resolution to measure the link between the inner disk instability and the outer disk through sub-mm continuum and molecular line observations. Our…

太阳与恒星天体物理 · 物理学 2015-10-28 A. S. Hales , S. A. Corder , W. R. D. Dent , S. M. Andrews , J. A. Eisner , L. A. Cieza

We present a new set of high-resolution molecular line maps of the gas immediately surrounding various Herbig-Haro (HH) knots of the giant HH flow HH 315, from the young star PV Cephei. The observations, aimed at studying the entrainment…

天体物理学 · 物理学 2009-11-07 Hector G. Arce , Alyssa A. Goodman

The Cepheus E outflow has been studied in the mid and far infrared using the ISO CAM and LWS instruments, and at millimetric wavelengths using OVRO. In the near and mid-IR, its morphology is similar to that expected for a jet driven…

天体物理学 · 物理学 2009-11-06 A. Moro-Martin , A. Noriega-Crespo , S. Molinari , L. Testi , J. Cernicharo , A. Sargent

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)…

As the number of observed brown dwarf outflows is growing it is important to investigate how these outflows compare to the well studied jets from young stellar objects. A key point of comparison is the relationship between outflow and…

太阳与恒星天体物理 · 物理学 2014-10-22 E. T. Whelan , J. M. Alcala , F. Bacciotti , B. Nisini , R. Bonito , S. Antoniucci , B. Stelzer , K. Biazzo , V. D'Elia , T. P. Ray

Jets and disc winds play an important role in the evolution of protoplanetary discs and the formation of planetary systems. However, there is still a lack of observational data regarding the presence and parameters of outflows, especially…

We present high-spatial resolution Plateau de Bure Interferometer CO(2-1) and SiO(2-1) observations of one intermediate-mass and one high-mass star-forming region. The intermediate-mass region IRAS20293+3952 exhibits four molecular…

天体物理学 · 物理学 2009-11-10 H. Beuther , P. Schilke , F. Gueth

One of the long-standing problems of star formation is the excess of angular momentum of the parent molecular cloud. In the classical picture, a fraction of angular momentum of the circumstellar material is removed by the…