Results 21 to 30 of about 288,104 (243)
Comparing Complex Chemistry in Neighboring Hot Cores: NOEMA Studies of W3(H2O) and W3(OH)
The 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 Effect of Local Galaxy Surface Density on Star Formation for HI selected galaxies [PDF]
, 2006 We present the result of investigations into two theories to explain the star formation rate-density relationship. For regions of high galaxy density, either there are fewer star forming galaxies, or galaxies capable of forming stars are present but some
Doyle, Marianne T. +1 more
core +3 more sources
Mapping Physical Conditions in Neighboring Hot Cores: NOEMA Studies of W3(H2O) and W3(OH)
The 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
Super Star Clusters in SBS0335-052E [PDF]
, 2008 As one of the lowest metallicity star forming galaxies, with a nucleus of several super star clusters, SBS0335-052E is the subject of substantial current study.
Bekki +31 more
core +1 more source
The metallicity of circumnuclear star-forming regions [PDF]
, 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
Ices in star forming regions [PDF]
Symposium - International Astronomical Union, 1997 IR spectra of sources associated with molecular cloud material show a variety of absorption features attributed to simple molecules, such as H2O, CO, CH3OH, CO2, CH4, and OCS in icy grain mantles. These identifications are reviewed. These molecules are formed through accretion and reaction of gas phase species on grain surfaces.
A.G.G.M. Tielens, D.C.B. Whittet
openaire +1 more source
The Chemistry of Star-Forming Regions [PDF]
Accounts of Chemical Research, 1999 During the last quarter century, chemists have responded magnificently to the challenges raised by astronomers in their attempts to understand the variety of molecules detected in interstellar clouds. Observations have shown the chemistry of these regions to be surprisingly complex, and now more than 100 molecular species have been identified in ...
David A. Williams, Thomas W. Hartquist
openaire +1 more source
Explaining the Chemical Inventory of Orion KL through Machine Learning
The Astrophysical Journal, 2023 The interplay of the chemistry and physics that exists within astrochemically relevant sources can only be fully appreciated if we can gain a holistic understanding of their chemical inventories. Previous work by Lee et al.
Haley N. Scolati +4 more
doaj +1 more source
Star-forming Clumps in Local Luminous Infrared Galaxies [PDF]
, 2019 We present HST narrowband near-infrared imaging of Paα and Paβ emission of 48 local luminous infrared galaxies (LIRGs) from the Great Observatories All-Sky LIRG Survey.
Armus, L. +17 more
core +3 more sources
Hydrogen Fluoride in High-Mass Star-forming Regions [PDF]
, 2012 Hydrogen fluoride has been established to be an excellent tracer of molecular hydrogen in diffuse clouds. In denser environments, however, the HF abundance has been shown to be approximately two orders of magnitude lower.
Ceccarelli, Cecilia +7 more
core +5 more sources