English
Related papers

Related papers: PdBI sub-arcsecond study of the SiO microjet in HH…

200 papers

With high-resolution narrowband He I 10830 \r{A} filtergrams from GST, we give an extensive analysis for 4 granular sized microeruptions which appear as the gentle ejection of material in He I 10830 \r{A} band. The analysis was aided with…

Solar and Stellar Astrophysics · Physics 2022-04-13 Zhenxiang Hong , Ya Wang , Haisheng Ji

Astrophysical jets are present in a range of environments, including young stellar objects, X-ray binaries, and active galactic nuclei, but their formation is still not fully understood. As one of the nearest symbiotic binary stars, R…

Solar and Stellar Astrophysics · Physics 2023-04-19 Caroline D. Huang , Margarita Karovska , Warren Hack , John C. Raymond , Rodolfo Montez , Vinay L. Kashyap

We present observations of SO and $\rm SO_2$ lines toward the shocked regions along the L1157 chemically rich outflow, taken in the context of the Seeds Of Life In Space IRAM-NOrthern Extended Millimeter Array Large Program, and supported…

Astrophysics of Galaxies · Physics 2020-06-17 S. Feng , C. Codella , C. Ceccarelli , P. Caselli , A. Lopez-Sepulcre , R. Neri , F. Fontani , L. Podio , B. Lefloch , H. B. Liu , R. Bachiller , S. Viti

We investigate the plausibility of detecting X-ray emission from a stellar jet that impacts against a dense molecular cloud. This scenario may be usual for classical T Tauri stars with jets in dense star-forming complexes. We first model…

This paper presents interferometric and single-dish CO observations along with HI data obtained for the oxygen-rich semi-regular variable RS Cnc, in order to probe its circumstellar environment at different scales. With the Plateau de Bure…

Solar and Stellar Astrophysics · Physics 2015-05-18 Yannick Libert , Jan Martin Winters , Thibaut Le Bertre , Eric Gérard , Lynn D. Matthews

We have carried out a thorough optical study of the closest star formation jet. The inner arcminute surrounding the class 0/I binary protostar L1551 IRS5 and its associated jet (HH154) have been observed using the Hubble Space Telescope…

Infrared Dark Clouds are expected to harbor sources in different, very young evolutionary stages. To better characterize these differences, we observed a sample of 43 massive Infrared Dark Clouds, originally selected as candidate high-mass…

Astrophysics · Physics 2019-08-19 H. Beuther , T. K. Sridharan

The fine-structure line of [OI] at 63micron is an important diagnostic tool in different fields of astrophysics. However, our knowledge of this line relies on observations with low spectral resolution, and the real contribution of each…

Jet quenching as observed via high p_T hadron production is studied in the HIJING1.35 model. We test the model on recent WA98 data on 160 AGeV Pb+Pb -> pi0 up to 4 GeV/c. The results depend sensitively on the model of the Cronin effect. At…

High Energy Physics - Phenomenology · Physics 2007-05-23 Miklos Gyulassy , Peter Levai

In recent years, there has been a number of detections of gradients in the radial velocity profile across jets from young stars. The significance of these results is considerable. They may be interpreted as a signature of jet rotation about…

Solar and Stellar Astrophysics · Physics 2015-05-20 Deirdre Coffey , Francesca Bacciotti , Antonio Chrysostomou , Brunella Nisini , Chris Davis

The SiO emissions are usually used to trace high-velocity outflow shocks in star-forming regions. However, several studies have found low-velocity and widespread SiO emissions not associated with outflows in molecular clouds. We aim to…

Astrophysics of Galaxies · Physics 2024-04-24 Kai Yang , Keping Qiu , Xing Pan

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…

Astrophysics · Physics 2015-05-13 A. Caratti o Garatti , D. Froebrich , J. Eisloeffel , T. Giannini , B. Nisini

HH 211 is a young Class 0 protostellar system, with a flattened envelope, a possible rotating disk, and a collimated jet. We have mapped it with the Submillimeter Array in 341.6 GHz continuum and SiO J=8-7 at ~ 0.6 resolution. The continuum…

Astrophysics of Galaxies · Physics 2015-06-23 Chin-Fei Lee , Ramprasad Rao , Tao-Chung Ching , Shih-Ping Lai , Naomi Hirano , Paul T. P. Ho , Hsiang-Chih Hwang

We describe a set of simulations of super-critical accretion onto a non-rotating supermassive BH. The accretion flow is radiation pressure dominated and takes the form of a geometrically thick disk with twin low-density funnels around the…

High Energy Astrophysical Phenomena · Physics 2015-09-23 Aleksander Sadowski , Ramesh Narayan

L1157-mm powers a molecular outflow that is well-known for its shock-induced chemical activity in several hot-spots. We have studied the molecular emission toward L1157-mm searching for a jet component responsible for these spots. We used…

Astrophysics of Galaxies · Physics 2014-12-24 M. Tafalla , R. Bachiller , B. Lefloch , N. Rodríguez-Fernández , C. Codella , A. López-Sepulcre , L. Podio

The origin and impact of outflows on proto-planetary disks and planet formation are key open questions. DG Tau B, a Class I protostar with a structured disk and a striking rotating conical CO outflow, recently identified with ALMA as one of…

Solar and Stellar Astrophysics · Physics 2024-08-21 Valentin Delabrosse , Catherine Dougados , Sylvie Cabrit , Benoit Tabone , Lukasz Tychoniec , Tom Ray , Linda Podio , Melissa McClure

Jet quenching is a well-established probe of the QGP in large collision systems such as Au+Au and Pb+Pb, but is absent in smaller p+A collisions despite the presence of collectivity. This makes it important to study its dependence on system…

Nuclear Experiment · Physics 2025-12-01 Sijie Zhang

We study the production of SiO in the gas phase of molecular outflows, through the sputtering of Si--bearing material in refractory grain cores, which are taken to be olivine; we calculate also the rotational line spectrum of the SiO. The…

Astrophysics · Physics 2009-11-13 A. Gusdorf , S. Cabrit , D. R. Flower , G. Pineau des Forets

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…

Astrophysics · Physics 2009-11-10 H. Beuther , P. Schilke , F. Gueth

We present photometry and spectroscopy of the peculiar TypeII supernova (SN) 2010jp, also named PTF10aaxi. The light curve exhibits a linear decline with a relatively low peak absolute magnitude of only -15.9, and a low radioactive decay…