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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

We present ALMA CO ($J$=2--1) and 1.3 mm continuum observations of the high-velocity jet associated with the FIR 6b protostar located in the Orion Molecular Cloud-2. We detect a velocity gradient along the short axis of the jet in both the…

PKS B2152-699 has radio power characteristic of sources that dominate radio feedback. We present new deep ATCA, Chandra and optical observations, and test the feedback model. We report the first high-resolution observations of the radio…

High Energy Astrophysical Phenomena · Physics 2015-06-05 D. M. Worrall , M. Birkinshaw , A. J. Young , K. Momtahan , R. A. E. Fosbury , R. Morganti , C. N. Tadhunter , G. Verdoes Kleijn

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,…

Solar and Stellar Astrophysics · Physics 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

Low-luminosity active galactic nuclei (LLAGNs) often host weak radio jets whose propagation is shaped by the surrounding interstellar medium. We investigate the nearby LLAGN NGC7213 to assess its ability to launch collimated outflows beyond…

Astrophysics of Galaxies · Physics 2026-05-12 G. Bruni , F. Panessa , E. Kammoun , A. L. Thakur , C. Reynolds , R. Ricci , M. Wieringa , S. Bianchi , A. De Rosa , G. Matt , F. Nicastro , F. Ursini

Bright features (`knots') in extragalactic jets are commonly associated with reheating of charged particles in regions with shocks or strong compression. We find a natural appearance of nozzles in simulations of toroidally magnetized jets,…

Astrophysics · Physics 2007-05-23 Maurice H. P. M. van Putten

A jet from the low-mass YSO CB230-A had been discovered in NIR narrow-band images. We aim to investigate the physical properties of the region from where the jet is launched. Our analysis was carried out using low-resolution NIR spectra…

Astrophysics · Physics 2009-11-13 Fabrizio Massi , Claudio Codella , Jan Brand , Luca di Fabrizio , Jan Wouterloot

We present long-slit H- and K-band spectroscopy of the low-mass outflow source SVS 13, obtained with the adaptive-optics assisted imager-spectrometer NACO on the VLT. With a spatial resolution of < 0.25 arcsec and a pixel scale of 0.027…

Astrophysics · Physics 2009-11-13 C. J. Davis , B. Nisini , M. Takami , T. -S. Pyo , M. D. Smith , E. Whelan , T. P. Ray , A. Chrysostomou

Context: Because it is viewed simply edge-on, the HH212 protostellar system is an ideal laboratory for studying the interplay of infall, outflow, and rotation in the earliest stages of low-mass star formation. Aims: We wish to exploit the…

Solar and Stellar Astrophysics · Physics 2015-06-22 C. Codella , S. Cabrit , F. Gueth , L. Podio , S. Leurini , R. Bachiller , A. Gusdorf , B. Lefloch , B. Nisini , M. Tafalla , W. Yvart

At present there are many studies concerning jets towards low-mass young stellar objects, while equivalent studies towards massive or intermediate-mass young stellar objects are scarce. In a previous study, we found highly misaligned…

Astrophysics of Galaxies · Physics 2016-10-05 S. Paron , C. Fariña , M. E. Ortega

Four Bok globules were studied in the Near-Infrared, through narrow-band filters, centered at the 1.644 micron line of [FeII], the H2-line at 2.122 micron, and the adjacent continuum. We report the discovery of [FeII] and H2 protostellar…

Astrophysics · Physics 2009-11-10 Fabrizio Massi , Claudio Codella , Jan Brand

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…

Protostellar jets have a fundamental role at the earliest evolution of protostars of all masses. In the case of low-mass (<8 Msun) protostars, strong observational evidence exists that the launching and collimation is due to the X- and/or…

While molecular outflows have been studied in details with radio interferometry, observations of the hotter gas in protostellar outflows at a comparable physical scale is often challenging. Combined with ALMA, JWST allows us to investigate…

We report new VLA and e-MERLIN high resolution and sensitivity images of the Triple Radio continuum Source in the Serpens star forming region. These observations allowed us to perform a deep multi-frequency, multi-epoch study by exploring…

In this work we present the highest spatial and spectral resolution integral field observations to date of the bipolar jet from the Orion proplyd 244-440 using MUSE NFM) observations on the VLT. We observed a previously unreported chain of…

The young stellar source HH 30 is a textbook example of an ionic optical jet originating from a disk in an edge-on system shown by the HST. It has a remnant envelope in $^{12}$CO observed by ALMA. The optical jet is characterized by its…

Solar and Stellar Astrophysics · Physics 2024-02-06 Tsung-Han Ai , Chun-Fan Liu , Hsien Shang , Doug Johnstone , Ruben Krasnopolsky

This study characterized the physical and kinematic properties within the innermost 500 au region of the L1527 bipolar outflow, a class 0/I low-mass protostar using JWST MIRI/MRS spectroscopy across 5-28 micron at 0.2-1.0 arcsec resolution.…

Chandra HRC observations are investigated for evidence of proper motion and brightness changes in the X-ray jet of the nearby radio galaxy M87. Using images spanning 5 yr, proper motion is measured in the X-ray knot HST-1, with a…

High Energy Astrophysical Phenomena · Physics 2019-07-10 Bradford Snios , Paul E. J. Nulsen , Ralph P. Kraft , C. C. Cheung , Eileen T. Meyer , William R. Forman , Christine Jones , Stephen S. Murray

We have obtained HST FOC f/48 long-slit spectroscopy of the inner 4" of the Narrow Line Region of NGC 1068 between 3500-5400A with a spectral resolution of 1.78A/pixel. At a spatial scale of 0.0287" per pixel these data provide an order of…

Astrophysics · Physics 2009-10-30 D. J. Axon , A. Marconi , A. Capetti , F. D. Macchetto , E. J. Schreier , A. Robinson