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Related papers: Molecular outflows in starburst nuclei

200 papers

We report the results from a systematic search for molecular (OH-119 um) outflows with Herschel-PACS in a sample of 43 nearby (z < 0.3) galaxy mergers, mostly ultraluminous infrared galaxies (ULIRGs) and QSOs. We find that the character of…

Nuclear rings in barred galaxies are sites of active star formation. We use hydrodynamic simulations to study temporal and spatial behavior of star formation occurring in nuclear rings of barred galaxies where radial gas inflows are…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Woo-Young Seo , Woong-Tae Kim

We present 0.15'' (~2.5pc) resolution ALMA CO(3-2) observations of the starbursting center in NGC253. Together with archival ALMA CO(1-0) and CO(2-1) data we decompose the emission into a disk and non-disk component. We find ~7-16% of the…

We find strong evidence for outflows originating in the dense molecular core NGC 6334 I(North): a 1000 Msol molecular core distinguished by its lack of HII regions and mid-IR emission. New observations were obtained of the SiO 2-1 and 5-4…

Astrophysics · Physics 2009-10-31 S. T. Megeath , A. R. Tieftrunk

We present a search for and characterization of ionized outflows in 15 star-forming systems at $z\sim3-9$ with no evidence of Active Galactic Nuclei (AGN), observed with JWST/NIRSpec IFU as part of the GA-NIFS program. The targets often…

We present a high-resolution (3.6'', 70pc) CO(1-0) mosaic of the molecular gas in M 82 covering an area of 2.5' x 3.5' (2.8kpc x 3.9kpc) obtained with the OVRO millimeter interferometer. The observations reveal the presence of huge amounts…

Astrophysics · Physics 2009-11-07 Fabian Walter , Axel Weiss , Nick Scoville

Despite compelling evidence that stellar bars drive gas into the inner 1--2 kpc or circumnuclear (CN) region of galaxies, there are few large, high resolution studies of the CN molecular gas and star formation (SF). We study a sample of…

Astrophysics · Physics 2009-11-10 Shardha Jogee , Nick Z. Scoville , Jeffrey D. P. Kenney

Using ultra-violet absorption-lines, we analyze the systematic properties of the warm ionized phase of starburst-driven winds in a sample of 39 low-redshift objects that spans broad ranges in starburst and galaxy properties. Total column…

Astrophysics of Galaxies · Physics 2015-08-26 Timothy M. Heckman , Rachel M. Alexandroff , Sanchayeeta Borthakur , Roderik Overzier , Claus Leitherer

New high resolution interferometer data of 10 IR ultraluminous galaxies shows the molecular gas is in rotating nuclear rings or disks with radii 300 to 800 pc. Most of the CO flux comes from a moderate-density, warm, intercloud medium…

Astrophysics · Physics 2009-10-30 D. Downes , P. M. Solomon

The explosive molecular outflow detected decades ago in the Orion BN/KL region of massive star formation was considered to be a bizarre event. This belief was strengthened by the non detection of similar cases over the years with the only…

High-mass stars, with their powerful winds and intense radiation fields, are fundamental in regulating galactic dynamics and evolution; however, despite their great relevance, the mechanisms involved in their formation are still not fully…

Astrophysics of Galaxies · Physics 2026-03-19 E. Cohen Arazi , M. E. Ortega , S. Paron , P. F. Velázquez , A. Rodríguez-González , E. Alquicira

High-resolution observations of ionized and molecular gas in the nuclear regions of galaxies are indispensable for delineating the interplay of star formation, gaseous inflows, stellar radiation, and feedback processes. Combining our new…

Astrophysics of Galaxies · Physics 2021-06-23 Yulong Gao , Fumi Egusa , Guilin Liu , Kotaro Kohno , Min Bao , Kana Morokuma-matsui , Xu Kong , Xiaoyang Chen

(Abridged) High-mass star formation is far less understood than low-mass star formation. It entails molecular outflows, which disturb the protostellar clump. Studying these outflows and the shocked gas they cause is key for a better…

Astrophysics of Galaxies · Physics 2023-09-27 N. Guerra-Varas , M. Merello , L. Bronfman , N. Duronea , D. Elia , R. Finger , E. Mendoza

We present the fourth of the Cholla Galactic OutfLow Simulations suite (CGOLS). Using a physically-motivated prescription for clustered supernova feedback, we successfully drive a multiphase outflow from a disk galaxy. The high resolution…

Astrophysics of Galaxies · Physics 2020-06-03 Evan E. Schneider , Eve C. Ostriker , Brant E. Robertson , Todd A. Thompson

Molecular outflows contributing to the matter cycle of star forming galaxies are now observed in small and large systems at low and high redshift. Their physical origin is still unclear. In most theoretical studies only warm ionised/neutral…

Astrophysics of Galaxies · Physics 2021-05-28 Philipp Girichidis , Thorsten Naab , Stefanie Walch , Thomas Berlok

FU Orionis-type objects (FUors) are low-mass pre-main-sequence objects which go through a short-lived phase (~100 years) of increased mass accretion rate (from 10^-8 to 10^-4 M_sun yr^-1). These eruptive young stars are in the early stages…

Low mass star-forming regions are more complex than the simple spherically symmetric approximation that is often assumed. We apply a more realistic infall/outflow physical model to molecular/continuum observations of three late Class 0…

Astrophysics of Galaxies · Physics 2013-08-26 J. M. C. Rawlings , M. P. Redman , P. B. Carolan

We consider the dynamics of and emission from growing superbubbles in a stratified interstellar gaseous disc driven by energy release from supernovae explosions in stellar clusters with {masses $M_{cl}= 10^5-1.6\times 10^6~M_\odot$}.…

Astrophysics of Galaxies · Physics 2023-02-08 Evgenii O. Vasiliev , Sergey A. Drozdov , Biman B. Nath , Ralf-Jürgen Dettmar , Yuri A. Shchekinov

Active galaxies are often associated with starbursts, which are possible sources of fuelling for the nuclear black holes. By means of optical (3500-7500 A) spectroscopic and narrow-band photometric data (H_alpha+[NII]6548,6583 and…

Astrophysics · Physics 2007-05-23 A. Romano , A. Rifatto , S. Ciroi , P. Rafanelli , M. Dopita

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)…