Results 31 to 40 of about 332,346 (345)

CHEMICAL EVOLUTION OF STAR-FORMING REGIONS

Annual 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., Blake, Geoffrey A.   +1 more
openaire   +5 more sources

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, Charles Engelbracht, Devecchi, Dowell, Elmegreen, Engelbracht, Fatuzzo, Glenn Schneider, Houck, Izotov, Izotov, Kunth, Kunth, Leitherer ., Leonardo Vanzi, Lytle, Marc Sauvage, Osterbrock, Pustilnik, Reines, Robert C. Kennicutt, Rodger I. Thompson, Seth, Thompson, Thompson, Thuan, Vanzi, Witt, Wolniewicz, Zhang, Zwart, Östlin   +31 more
core   +1 more source

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, Will E. Thompson, Dariusz C. Lis, Susanna L. Widicus Weaver   +3 more
doaj   +1 more source

Water in star- and planet-forming regions [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012
In this paper, we discuss the astronomical search for water vapour in order to understand the disposition of water in all its phases throughout the processes of star and planet formation. Our ability to detect and study water vapour has recently received a tremendous boost with the successful launch and operation of the ...
Bergin, E., Van Dishoeck, E.
openaire   +4 more sources

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, Anthony J. Remijan, Eric Herbst, Brett A. McGuire, Kin Long Kelvin Lee   +4 more
doaj   +1 more source

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, Emprechtinger, Martin, Lis, Dariusz C., Monje, Raquel R., Neufeld, David, Phillips, Thomas G., van der Tak, Floris F. S., van der Wiel, Matthijs H. D.   +7 more
core   +5 more sources

The Way of Water: ALMA Resolves H2O Emission Lines in a Strongly Lensed Dusty Star-forming Galaxy at z ∼ 3.1

The Astrophysical Journal, 2023
We report Atacama Large Millimeter/submillimeter Array (ALMA) high-resolution (≲0.3″) observations of water emission lines p -H _2 O(2 _02 − 1 _11 ), o -H _2 O(3 _21 − 3 _12 ), p -H _2 O(4 _22 − 4 _13 ), in the strongly lensed galaxy HATLASJ113526.2 ...
Francesca Perrotta, Marika Giulietti, Marcella Massardi, Giovanni Gandolfi, Tommaso Ronconi, Maria Vittoria Zanchettin, Quirino D’ Amato, Meriem Behiri, Martina Torsello, Francesco Gabrielli, Lumen Boco, Vincenzo Galluzzi, Andrea Lapi   +12 more
doaj   +1 more source

Identifying Physical Structures in Our Galaxy with Gaussian Mixture Models: An Unsupervised Machine Learning Technique

The Astrophysical Journal, 2023
We explore the potential of the Gaussian mixture model (GMM), an unsupervised machine-learning method, to identify coherent physical structures in the interstellar medium.
M. Tiwari, R. Kievit, S. Kabanovic, L. Bonne, F. Falasca, C. Guevara, R. Higgins, M. Justen, R. Karim, Ü. Kavak, C. Pabst, M. W. Pound, N. Schneider, R. Simon, J. Stutzki, M. Wolfire, A. G. G. M. Tielens   +16 more
doaj   +1 more source

Galaxy Interactions in Compact Groups II: abundance and kinematic anomalies in HCG 91c [PDF]

, 2015
Galaxies in Hickson Compact Group 91 (HCG 91) were observed with the WiFeS integral field spectrograph as part of our ongoing campaign targeting the ionized gas physics and kinematics inside star forming members of compact groups.
Borthakur, S., Chambers, K. C., Dopita, M. A., Heckman, T. M., Verdes-Montenegro, L., Vogt, F. P. A., Yun, M. S.   +6 more
core   +2 more sources

Disentangling the role of environmental processes in galaxy clusters

, 2012
In this work we present the results of a novel approach devoted to disentangle the role of the environmental processes affecting galaxies in clusters. This is based on the analysis of the NUV-r' distributions of a large sample of star-forming galaxies in
Abazajian, Adelman-McCarthy, Baldry, Bekki, Bekki, Bianchi, Buat, Byrd, den Hartog, Dressler, Evrard, Fujita, Gómez, Hernández-Fernández, Icke, Iglesias-Páramo, J. Iglesias-Páramo, J. M. Vílchez, Jonathan D. Hernández-Fernández, Kaiser, Kauffmann, Leitherer, Mahdavi, Mahdavi, Martin, Mihos, Mo, Moore, Natarajan, Poggianti, Rines, Rines, Salim, Stoughton, Strateva, Strauss, Treu   +36 more
core   +1 more source