Results 1 to 10 of about 44,874 (266)

Dense Cores in IRDC G14.225-0.506 Revealed by ALMA Observations

open access: yesThe Astrophysical Journal
Dense cores in massive, parsec-scale molecular clumps are sites that harbor protocluster formation. We present results from observations toward a hub–filament structure of a massive infrared (IR) dark cloud G14.225-0.506 using the Atacama Large ...
Yanhanle Zhao   +4 more
doaj   +1 more source

Star Forming Regions in Cepheus

open access: yes, 2008
104 pages, 25 tables, 35 figures; A chapter in the "Handbook of Star Forming Regions, Vol 1: The Northern Sky," ed. Bo Reipurth; ASP Monograph Series. Full resolution version can be found at http://www.konkoly.hu/staff/kun/handbook_chapters/
Kun, M., Kiss, Z. T., Balog, Z.
openaire   +2 more sources

Infrared Studies of Star-Forming Regions — Summary [PDF]

open access: yesSymposium - International Astronomical Union, 1981
When Gareth Wynn-Williams first asked me to give this summary talk he specifically requested that I be “provocative.” Having already been to Hawaii three times I realized how much easier it is to be laid back rather than provocative here - indeed, I but rarely rise above the ground energy state.
openaire   +1 more source

JWST-FEAST: Feedback in Emerging extrAgalactic Star clusTers: Calibration of Star Formation Rates in the Mid-infrared with NGC 628

open access: yesThe Astrophysical Journal
New JWST near-infrared imaging of the nearby galaxy NGC 628 from the JWST Cycle 1 program Feedback in Emerging extrAgalactic Star clusTers (JWST-FEAST) is combined with archival JWST mid-infrared imaging to calibrate the 21 μ m emission as a star ...
Daniela Calzetti   +21 more
doaj   +1 more source

Protostellar Feedback in Massive Star Forming Regions

open access: yes, 2023
We examine mechanical feedback mechanisms during the protostellar phase through jets and outflows. To do so, we make use of velocity-resolved CII observations at 158 $\mu$m taken with the SOFIA observatory. We identify CII emitting cavities at velocities ranging from 1-2 km s$^{-1}$ to 15 km s$^{-1}$ relative to the Veil shell ($v_\mathrm{LSR}$ = 13 km
Kavak, U.   +4 more
openaire   +3 more sources

Cosmic-Ray Injection from Star-Forming Regions

open access: yesPhysical Review Letters, 2016
At present, all physical models of diffuse Galactic γ-ray emission assume that the distribution of cosmic-ray sources traces the observed populations of either OB stars, pulsars, or supernova remnants. However, since H_{2}-rich regions host significant star formation and numerous supernova remnants, the morphology of observed H_{2} gas (as traced by CO
Carlson, Eric   +2 more
openaire   +5 more sources

ALMA-IMF. XIV. Free–Free Templates Derived from H41α and Ionized Gas Content in 15 Massive Protoclusters

open access: yesThe Astrophysical Journal Supplement Series
We use the H41 α recombination line to create templates of the millimeter free–free emission in the ALMA-IMF continuum maps, which allows us to separate it from dust emission.
Roberto Galván-Madrid   +27 more
doaj   +1 more source

Different Influence of Gas Accretion on the Evolution of Star-forming and Non-star-forming Galaxies

open access: yesThe Astrophysical Journal
Using integral field spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory survey, we investigate the spatially resolved properties and empirical relations of a star-forming galaxy and a non-star-forming galaxy hosting ...
Min Bao, Wenlong Zhao, Qirong Yuan
doaj   +1 more source

The Impact of External Radiation on the Inner Disk Chemistry of Planet Formation

open access: yesThe Astrophysical Journal
The vast majority of young stars hosting planet-forming disks exist within clustered environments, like the Orion Nebula, implying that seemingly “extreme” UV environments (10 ^4 G _0 and above) are not so atypical in the context of planet formation ...
Jenny K. Calahan   +2 more
doaj   +1 more source

Star-forming complexes in the polar ring galaxy NGC660

open access: yesOpen Astronomy, 2017
Galaxies with polar rings consist of two subsystems, a disk and a ring, which rotate almost in orthogonal planes. In this paper, we analyze the parameters characterizing the composition of the interstellar medium and star formation in star-forming ...
Smirnova Ksenia I.   +2 more
doaj   +1 more source

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