Results 251 to 260 of about 3,871,291 (295)

A Faint Progenitor System for the Faint Supernova 2024vjm

open access: yes
Zimmerman E   +69 more
europepmc   +1 more source

Water in star‐forming regions with Herschel

Astronomische Nachrichten, 2011
AbstractThe Herschel Space Observatory is well suited to address several important questions in star‐ and planet formation, as is evident from its first year of operation. This paper focuses on observations of water, a key molecule in the physics and chemistry of star‐formation.
Kristensen, L., Van Dishoeck, E.
openaire   +3 more sources

Carbon Dioxide in Star-forming Regions

The Astrophysical Journal, 2000
We consider the gas-phase chemistry of CO2 molecules in active regions. We show that CO2 molecules evaporated from dust in hot cores cannot be efficiently destroyed and are in fact copiously produced in cooler gas. When CO2-rich ices are sputtered in strong MHD shock waves, the increase in atomic hydrogen, due to H2 dissociation by ion-neutral ...
, Charnley, , Kaufman
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Chemistry of Star-Forming Regions

The Journal of Physical Chemistry A, 2005
The space between stars is not empty but contains gas-phase and particulate matter under varying conditions. Neutral matter is found mainly in large regions of the interstellar medium known as "clouds", the largest of which, termed "giant molecular clouds", are essentially molecular in nature.
openaire   +2 more sources

Star forming regions

Vistas in Astronomy, 1988
With recent improvements in the mm-wave, IR and high-sensitivity optical observations various new features of star formation embedded in dark clouds have been revealed. These are expanding shock fronts due to newly formed massive stars, gaseous disks surrounding proto stars, the energetic bipolar molecular flows, and the weRlcollimat'ed ionized jets ...
openaire   +1 more source

The star-forming region in Orion KL

Astronomy Letters, 2003
We have studied the fine structure of the active H2O supermaser emission region in Orion KL with an angular resolution of 0.1 mas. We found central features suggestive of a bipolar outflow, bullets, and an envelope which correspond to the earliest stage of low-mass star formation.
Matveyenko, L. I.   +3 more
openaire   +2 more sources

Magnetic massive stars in star forming regions

Proceedings of the International Astronomical Union, 2018
AbstractOne idea for the origin of magnetic fields in massive stars suggests that the magnetic field is the fossil remnant of the Galactic ISM magnetic field, amplified during the collapse of the magnetised gas cloud. A search for the presence of magnetic fields in massive stars located in active sites of star formation led to the detection of rather ...
Swetlana Hubrig   +2 more
openaire   +1 more source

Star-Forming Regions

2012
Satisfactory assessments of star forming regions in the Galaxy are essential for the understanding of early stellar evolution and today a vast amout of astronomical studies are available. Star-forming regions distinguish themselves from other regions in the Galaxy. Many different physical processes are displayed with high levels of variability, a large
openaire   +1 more source

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