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相关论文: Proper motions of collimated jets from intermediat…

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We present measurements of proper motions and radial velocities of four powerful Herbig-Haro (HH) jets in the Carina nebula: HH 666, HH 901, HH 902, and HH 1066. Two epochs of Hubble Space Telescope (HST) imaging separated by a time…

太阳与恒星天体物理 · 物理学 2014-11-05 Megan Reiter , Nathan Smith

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

We report the discovery of new Herbig-Haro (HH) jets in the Carina Nebula, and we discuss the protostellar outflow activity of a young OB association. These are the first results of an HST/ACS H-alpha imaging survey of Carina. Adding to the…

太阳与恒星天体物理 · 物理学 2015-05-18 Nathan Smith , John Bally , Nolan R. Walborn

Aims: Jets are excellent signposts for very young embedded protostars, so we want to identify jet-driving protostars as a tracer of the currently forming generation of stars in the Carina Nebula, which is one of the most massive galactic…

A protostellar jet and outflow are calculated for \sim 270 yr following the protostar formation using a three dimensional magnetohydrodynamics simulation, in which both the protostar and its parent cloud are spatially resolved. A…

太阳与恒星天体物理 · 物理学 2015-06-23 Masahiro N. Machida

We present narrowband WFC3-UVIS and -IR images of four externally irradiated protostellar jets in the Carina nebula: HH666, HH901, HH902, and HH1066. These massive jets are unusual because they are bathed in UV radiation from dozens of…

太阳与恒星天体物理 · 物理学 2015-06-16 Megan Reiter , Nathan Smith

HH 666 is an externally irradiated protostellar outflow in the Carina Nebula for which we present new near-IR [Fe II] spectra obtained with the FIRE spectrograph at Magellan Observatory. Earlier H{\alpha} and near-IR [Fe II] imaging…

太阳与恒星天体物理 · 物理学 2015-06-24 Megan Reiter , Nathan Smith , Megan M. Kiminki , John Bally

Jets from young stars represent one of the most striking signposts of star formation. The phenomenon has been researched for over two decades and there is now general agreement that such jets are generated as a by-product of accretion; most…

天体物理学 · 物理学 2007-05-23 Tom Ray , Catherine Dougados , Francesca Bacciotti , Jochen Eisloeffel , Antonio Chrysostomou

The HH 24 complex harbors five collimated jets emanating from a small protostellar multiple system. We have carried out a multi-wavelength study of the jets, their driving sources, and the cloud core hosting the embedded stellar system,…

太阳与恒星天体物理 · 物理学 2023-04-26 Bo Reipurth , J. Bally , Hsi-Wei Yen , H. G. Arce , L. -F. Rodriguez , A. C. Raga , T. R. Geballe , R. Rao , F. Comeron , S. Mikkola , C. A. Aspin , J. Walawender

Fast highly-collimated outflows including bipolar knots, jet-like features, and point-symmetric filaments or string of knots are common in planetary nebulae (PNe). These features, generally named as jets, are thought to play an active role…

太阳与恒星天体物理 · 物理学 2020-02-19 Martin A Guerrero , Jackeline S Rechy-Garcia , Roberto Ortiz

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

We present the first detection of spatially resolved protostellar outflows and jets in the outer Galaxy. We observed five star-forming regions in the outer Galaxy (Sh 2--283, NOMF05-16/19/23/63; galactocentric distance = 15.7--17.4 kpc)…

HH 212 is a nearby (400 pc) highly collimated protostellar jet powered by a Class 0 source in Orion. We have mapped the inner 80" (~ 0.16 pc) of the jet in SiO (J=8-7) and CO (J=3-2) simultaneously at ~ 0.5 resolution with the Atacama…

星系天体物理 · 物理学 2015-06-11 Chin-Fei Lee , Naomi Hirano , Qizhou Zhang , Hsien Shang , Paul T. P. Ho , Yosuke Mizuno

Context. To investigate the dynamical properties of protostellar jets. Aims. Determine the proper motion of protostellar jets around Class 0 and Class I sources in an active star forming region in Serpens. Methods. Multi-epoch deep images…

Protostellar jets and outflows are essential ingredients of the star formation process. A better understanding of this phenomenon is important in its own right as well as for many fundamental aspects of star formation. Jets and outflows…

星系天体物理 · 物理学 2023-09-13 Gang Wu , Christian Henkel , Ye Xu , Andreas Brunthaler , Karl M. Menten , Keping Qiu , Jingjing Li , Bo Zhang , Jarken Esimbek

We present [Fe II] 1.64 {\mu}m imaging observations for jets and outflows from young stellar objects (YSOs) over the northern part (~ 24'x45') of the Carina Nebula, a massive star forming region. The observations were performed with IRIS2…

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

We carried out multiwavelength (0.7-5 cm), multiepoch (1994-2015) Very Large Array (VLA) observations toward the region enclosing the bright far-IR sources FIR 3 (HOPS 370) and FIR 4 (HOPS 108) in OMC-2. We report the detection of 10 radio…

The driving mechanism of jets and outflows in star formation process is studied using resistive MHD nested grid simulations. We calculated cloud evolution from the molecular cloud core to the stellar core. In the collapsing cloud core, we…

天体物理学 · 物理学 2007-05-23 Masahiro N. Machida , Shu-ichiro Inutsuka , Tomoaki Matsumoto

The V380 Ori NE bipolar outflow was imaged in the SiO and CO J = 1 - 0 lines, and dense cores in L1641 were observed in the 2.0-0.89 mm continuum. The highly collimated SiO jet shows point-symmetric oscillation patterns in both position and…

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