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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…

Solar and Stellar Astrophysics · Physics 2016-09-21 Megan Reiter , Nathan Smith , John Bally

We use near-infrared (NIR) spectroscopy covering simultaneously the $zJHK$ bands to look for outflowing gas from the nuclear environment of 1H0707-495 taking advantage that this region is dominated by low-ionization broad line region (BLR)…

Using Science Verification data from the Atacama Large Millimeter/Submillimeter Array (ALMA), we have identified and imaged five rotational transitions (J=5-4 and J=6-5) of the three silicon monoxide isotopologues 28SiO v=0, 1, 2 and 29SiO…

Solar and Stellar Astrophysics · Physics 2015-06-11 Florian Niederhofer , Elizabeth Humphreys , Ciriaco Goddi

Jets and outflows trace the accretion history of protostars. High-velocity molecular jets have been observed from several protostars in the early Class\,0 phase of star formation, detected with the high-density tracer SiO. Until now, no…

We present observations of ionized gas outflows in eleven z$ =1.39-2.59$ radio-loud quasar host galaxies. Data was taken with the integral field spectrograph (IFS) OSIRIS and the adaptive optics system at the W.M. Keck Observatory targeting…

Transits in the H I 1216 A (Lyman alpha), O I 1334 A, C II 1335 A, and Si III 1206.5 A lines constrain the properties of the upper atmosphere of HD209458b. In addition to probing the temperature and density profiles in the thermosphere,…

Earth and Planetary Astrophysics · Physics 2015-06-11 T. T. Koskinen , R. V. Yelle , M. J. Harris , P. Lavvas

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

Mass outflow rates and loading factors are typically used to infer the quenching potential of galactic-scale outflows. However, these generally rely on observations of a single gas phase which can severely underestimate the total ejected…

Astrophysics of Galaxies · Physics 2020-04-22 Guido Roberts-Borsani

We present images of the HH 211 molecular jet in the SiO v=0, J=1-0 line at 43 GHz made with the Very Large Array at approximately 0.5 arcsec resolution. The SiO emission appears to trace primarily internal bowshocks in the outflow,…

Astrophysics · Physics 2009-11-06 Claire J. Chandler , John S. Richer

Massive gas outflows are considered a key component in the process of galaxy formation and evolution. It is, therefore, not surprising that a lot of effort is going in quantifying their impact via detailed observations. This short…

Cosmology and Nongalactic Astrophysics · Physics 2011-12-22 Raffaella Morganti

We analyze the absorption and emission-line profiles produced by a set of simple, cool gas wind models motivated by galactic-scale outflow observations. We implement monte carlo radiative transfer techniques that track the propagation of…

Astrophysics of Galaxies · Physics 2015-05-27 J. Xavier Prochaska , Daniel Kasen , Kate Rubin

Jets and outflows are the first signposts of stellar birth. Emission in the H2 1-0S(1) line at 2.122 micron is a powerful tracer of shock excitation in these objects. Here we present the analysis of 2.0 x 0.8 square degrees data from the UK…

Astrophysics of Galaxies · Physics 2018-06-06 Manash R. Samal , Wen-Ping Chen , Michihiro Takami , Jessy Jose , Dirk Froebrich

Protostellar outflows display wide-angle winds and collimated jets, the magnetocentrifugal launching of which enables accretion onto the protostar. The majority of the outflow mass is likely ejected or entrained molecular H$_2$, which can…

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

This work explored the spatial distribution of C$^{17}$O, SiO, HC$_{3}$N and SO$_{2}$ molecules, as well as the energetics of outflows in G358.46$-$0.39 proto-cluster using ALMA band 7 archival data, with the aim of providing an improved…

Astrophysics of Galaxies · Physics 2025-11-20 Chukwuebuka J. Ugwua , James O. Chibuezea , Willice Obonyoa , Mavis Seidu

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…

Solar and Stellar Astrophysics · Physics 2015-06-16 Megan Reiter , Nathan Smith

Galactic outflows regulate the amount of gas galaxies convert into stars. However, it is difficult to measure the mass outflows remove because they span a large range of temperatures and phases. Here, we study the rest-frame ultraviolet…

Astrophysics of Galaxies · Physics 2017-12-27 J. Chisholm , R. Bordoloi , J. R. Rigby , M. Bayliss

Massive star formation is associated with energetic processes that may influence the physics and chemistry of parental molecular clouds and impact galaxy evolution. The high-mass protostar DR21 Main in Cygnus X possesses one of the largest…