Results 11 to 20 of about 47,546 (266)

Dusty magnetohydrodynamics in star-forming regions [PDF]

open access: yesJournal of Plasma Physics, 2010
AbstractStar formation occurs in dark molecular regions where the number density of hydrogen nuclei nH exceeds 104 cm−3 and the fractional ionization is 10−7 or less. Dust grains with sizes ranging up to tenths of microns and perhaps down to tens of nanometers contain just less than 1% of the mass.
Van Loo, S.   +4 more
openaire   +3 more sources

Masers in Star Forming Regions [PDF]

open access: yesSymposium - International Astronomical Union, 1987
OH and H2O masers in star forming regions are important because they are readily detectable indicators of star formation and because they provide unique information on the kinematics and physical conditions in high density regions (106 – 1010 cm−3) surrounding young stars, regions which cannot be studied by other means at present.
openaire   +1 more source

CHEMICAL EVOLUTION OF STAR-FORMING REGIONS

open access: yesAnnual Review of Astronomy and Astrophysics, 1998
▪ Abstract  Recent advances in the understanding of the chemical processes that occur during all stages of the formation of stars, from the collapse of molecular clouds to the assemblage of icy planetesimals in protoplanetary accretion disks, are reviewed.
van Dishoeck, Ewine F.   +1 more
openaire   +5 more sources

Star-Forming Regions

open access: yes, 2022
Invited chapter for the "Handbook of X-ray and Gamma-ray Astrophysics" (Eds. C. Bambi and A. Santangelo, Springer Nature, 2022), accepted (42 pages, 7 figures)
openaire   +2 more sources

Dynamical evolution of star-forming regions [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
20 pages, 9 figures, accepted for publication in ...
Parker, R.J.   +3 more
openaire   +5 more sources

The metallicity of circumnuclear star-forming regions [PDF]

open access: yes, 2008
We present a spectrophotometric study of circumnuclear star forming regions (CNSFR) in the early type spiral galaxies: NGC 2903, NGC 3351 and NGC 3504, all of them of over solar metallicity according to standard empirical calibrations. A detailed determination of their abundances is made after careful subtraction of the very prominent underlying ...
Diaz, A. I.   +3 more
openaire   +2 more sources

Comparing Complex Chemistry in Neighboring Hot Cores: NOEMA Studies of W3(H2O) and W3(OH)

open access: yesThe Astrophysical Journal, 2023
Presented here are NOEMA interferometric observations of the neighboring hot cores W3(H _2 O) and W3(OH). The presence of two star-forming cores at different evolutionary stages within the same parent cloud presents a unique opportunity to study how the ...
Will E. Thompson   +3 more
doaj   +1 more source

The Production of Magnetically Dominated Star-forming Regions [PDF]

open access: yesThe Astrophysical Journal, 2005
9 pages, 3 figures, accepted for publication in ApJ ...
Lim, A.J.   +2 more
openaire   +3 more sources

Mapping Physical Conditions in Neighboring Hot Cores: NOEMA Studies of W3(H2O) and W3(OH)

open access: yesThe Astrophysical Journal, 2023
The complex chemistry that occurs in star-forming regions can provide insight into the formation of prebiotic molecules at various evolutionary stages of star formation.
Morgan M. Giese   +3 more
doaj   +1 more source

Dense Outflowing Molecular Gas in Massive Star-forming Regions

open access: yesThe Astronomical Journal
Dense outflowing gas, traced by transitions of molecules with large dipole moment, is important for understanding mass loss and feedback of massive star formation.
Yani Xu   +8 more
doaj   +1 more source

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