English
Related papers

Related papers: Outflows, envelopes, and disks as evolutionary ind…

200 papers

Outflows in quasars during the early epochs of galaxy evolution are an important part of the feedback mechanisms potentially affecting the evolution of the host galaxy. However, systematic observations of outflows are only now becoming…

Astrophysics of Galaxies · Physics 2019-10-23 F. Stanley , J. B. Jolly , S. König , K. K. Knudsen

We present Atacama Large Millimeter/ sub-millimeter Array (ALMA) observations of V883 Ori, an FU Ori object. We describe the molecular outflow and envelope of the system based on the $^{12}$CO and $^{13}$CO emissions, which together trace a…

Solar and Stellar Astrophysics · Physics 2017-05-03 D. Ruíz-Rodríguez , L. A. Cieza , J. P. Williams , D. Principe , J. J. Tobin , Z. Zhu , A. Zurlo

We report molecular gas observations of IRAS 20100-4156 and IRAS 03158+4227, two local ultraluminous infrared galaxies (ULIRGs) hosting some of the fastest and most massive molecular outflows known. Using ALMA and PdBI observations, we…

Outflowing motions, whether a wind launched from the disk, a jet launched from the protostar, or the entrained molecular outflow, appear to be an ubiquitous feature of star formation. These outwards motions have a number of root causes, and…

Astrophysics of Galaxies · Physics 2016-05-25 Pamela D. Klaassen , Joseph C. Mottram , Luke T. Maud , Attila Juhasz

In this {\it Letter}, we present sensitive millimeter SiO (J=5-4; $\nu$=0) line observations of the outflow arising from the enigmatic object Orion Source I made with the Atacama Large Millimeter/Submillimeter Array (ALMA). The observations…

Astrophysics of Galaxies · Physics 2015-06-05 Luis A. Zapata , Luis F. Rodriguez , Johannes Schmid-Burgk , Laurent Loinard , Karl M. Menten , Salvador Curiel

We have shown previously that SOHO/UVCS data allow us to detect active region (AR) outflows at coronal altitudes higher than those reached by other instrumentation. These outflows are thought to be a component of the slow solar wind. Our…

Solar and Stellar Astrophysics · Physics 2016-10-07 L. Zangrilli , G. Poletto

In this review we focus on the role jets and outflows play in the star and planet formation process. Our essential question can be posed as follows: are jets/outflows merely an epiphenomenon associated with star formation or do they play an…

Solar and Stellar Astrophysics · Physics 2019-08-19 A. Frank , T. P. Ray , S. Cabrit , P. Hartigan , H. G. Arce , F. Bacciotti , J. Bally , M. Benisty , J. Eislöffel , M. Güdel , S. Lebedev , B. Nisini , A. Raga

We present Atacama Large Millimeter/submillimeter Array (ALMA) 1.3 mm continuum and CO(2-1) line emission observations toward the high-mass star formation region DR21. Five new continuum sources are found. We identify eighteen outflow…

Astrophysics of Galaxies · Physics 2024-09-25 E. Guzmán Ccolque , M. Fernández López , L. A. Zapata , J. Bally , P. R. Rivera-Ortiz

Context. The formation processes of massive stars are still unclear but a picture is emerging involving accretion disks and molecular outflows in what appears to be a scaled-up version of low-mass star formation. A census of outflow…

We present line and continuum observations (resolution ~0.3"-3.5") made with the Atacama Large Millimeter/submillimeter Array (ALMA), Submillimeter Array, and Very Large Array of a young O-type protostar W42-MME (mass: 19-4 Msun). The ALMA…

Submillimeter Array 1.3mm line and continuum observations toward the young massive star-forming region IRAS18182-1433 are presented. The data are complemented with short-spacing CO(2-1) observations and SiO(1-0) data from the VLA. Multiple…

Astrophysics · Physics 2009-11-11 H. Beuther , Q. Zhang , T. K. Sridharan , C. -F. Lee , L. A. Zapata

The luminous Young Stellar Object (YSO) IRAS 07422-2001 is studied in the infrared. We discover star forming activity in embedded clusters located in a cloud detected at mid-IR wavelengths in emission. Multiple outflows are discovered from…

Solar and Stellar Astrophysics · Physics 2015-06-04 Watson P. Varricatt

Variable accretion has been well studied in evolved stages of low-mass stars formation. However, the accretion history in the initial phases of star formation is still a seldom studied topic. The outflows and jets emerging from protostellar…

Solar and Stellar Astrophysics · Physics 2023-12-21 Veronica Lora , Thomas Nony , Alejandro Esquivel , Roberto Galván-Madrid

We present a detailed investigation of a multipolar episodic molecular outflow in the mini-starburst region W49N, which hosts the most luminous water maser in the Galaxy. Using high-resolution ($\sim$0.3 arcsec) Atacama Large…

We present Atacama Large Millimeter/sub-millimeter Array (ALMA) Cycle-2 observations of the HBC 494 molecular outflow and envelope. HBC 494 is an FU Ori-like object embedded in the Orion A cloud and is associated with the reflection nebulae…

Hydrodynamic simulations can connect outflow observables to the physical conditions of outflowing gas. Here, we use simulations of isolated disk galaxies ranging from dwarf mass ($M_{200} = 10^{10}\mathrm{M}_{\odot}$) to Milky Way mass…

Outflows are key indicators of ongoing star formation. We report the discovery of an unanchored forked stream within the propagating path of an extremely young protostellar outflow in the 70 $\mu$m-dark clump G34.74-0.12, based on ALMA 1.3…

Gaseous outflows are key phenomena in the evolution of galaxies, as they affect star formation (either positively or negatively), eject gas from the core or disk, and directly cause mixing of pristine and processed material. Active outflows…

Astrophysics of Galaxies · Physics 2022-11-23 G. C. Jones , R. Maiolino , C. Circosta , J. Scholtz , S. Carniani , Y. Fudamoto

One of the most poorly understood aspects of low-mass star formation is how multiple-star systems are formed. Here we present the results of Atacama Large Millimeter/submillimeter Array (ALMA) Band-6 observations towards a forming quadruple…