Results 61 to 70 of about 731,750 (386)

Testing 24 micron and Infrared Luminosity as Star Formation Tracers for Galactic Star Forming Regions [PDF]

, 2013
We have tested some relations for star formation rates used in extra-galactic studies for regions within the Galaxy. In nearby molecular clouds, where the IMF is not fully-sampled, the dust emission at 24 micron greatly underestimates star formation ...
Evans II, Neal J., Vutisalchavakul, Nalin   +1 more
core   +2 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

The use of extra-galactic star formation tracers on star forming regions in the Milky Way [PDF]

, 2016
We studied three groups of star forming clouds in the Milky Way: 5 clouds from Spitzer c2d Legacy survey, 10 clouds from Gould Belt survey, and 32 massive dense clumps.
Vutisalchavakul, Nalin
core   +1 more source

Seeds Of Life In Space (SOLIS): The Organic Composition Diversity at 300–1000 au Scale in Solar-type Star-forming Regions [PDF]

, 2017
Complex organic molecules have been observed for decades in the interstellar medium. Some of them might be considered as small bricks of the macromolecules at the base of terrestrial life.
C. Ceccarelli, P. Caselli, F. Fontani, R. Neri, A. López-Sepulcre, C. Codella, S. Feng, I. Jímenez-Serra, I. Jímenez-Serra, B. Lefloch, J. Pineda, C. Vastel, C. Vastel, Felipe O. Alves, R. Bachiller, N. Balucani, N. Balucani, N. Balucani, E. Bianchi, E. Bianchi, L. Bizzocchi, S. Bottinelli, S. Bottinelli, E. Caux, E. Caux, A. Chacón-Tanarro, R. Choudhury, A. Coutens, F. Dulieu, C. Favre, C. Favre, P. Hily-Blant, J. Holdship, C. Kahane, A. J. Al-Edhari, A. J. Al-Edhari, J. Laas, J. Ospina, Y. Oya, L. Podio, A. Pon, A. Punanova, D. Quénard, D. Quénard, A. Rimola, N. Sakai, Ian R. Sims, S. Spezzano, V. Taquet, L. Testi, L. Testi, P. Theulé, P. Ugliengo, A. Vasyunin, S. Viti, L. Wiesenfeld, S. Yamamoto   +56 more
semanticscholar   +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

Physical properties and H-ionizing-photon production rates of extreme nearby star-forming regions [PDF]

Monthly notices of the Royal Astronomical Society, 2017
Measurements of the galaxy UV luminosity function at z 6 suggest that young stars hosted in low-mass star-forming galaxies produced the bulk of hydrogen-ionizing photons necessary to reionize the intergalactic medium (IGM) by redshift z ∼ 6. Whether star-
J. Chevallard, S. Charlot, P. Senchyna, D. Stark, A. Vidal-García, A. Feltre, Julia Gutkin, T. Jones, R. Mainali, A. Wofford   +9 more
semanticscholar   +1 more source

Star Formation Efficiency in the Central 1 kpc Region of Early-Type Spiral Galaxies [PDF]

, 2000
It has been reported recently that there are some early-type spiral (Sa--Sab) galaxies having evident star-forming regions which concentrate in their own central 1-kpc.
Akio K. Inoue, Buat V., Garcia-Barreto J. A., Genkin I. L., Hideyuki Kamaya, Hiroyuki Hirashita, Honma M., Inoue A. K., Kamaya H., Kamaya H., Read A. M., Sofue Y., Tomita A.   +12 more
core   +3 more sources

Experimental Studies of Gas-Phase Reactivity in Relation to Complex Organic Molecules in Star-Forming Regions

ACS Earth and Space Chemistry, 2019
The field of astrochemistry concerns the formation and abundance of molecules in the interstellar medium, star-forming regions, exoplanets, and solar system bodies.
I. Cooke, I. Sims
semanticscholar   +1 more source

Ultraviolet spectra of extreme nearby star-forming regions – approaching a local reference sample for JWST [PDF]

, 2017
NASA through Space Telescope Science Institute [14168]; NASA [NAS 5-26555]; W.M. Keck Foundation; National Science Foundation [AST-1410155]; European Research Council [321323-NEOGAL]; NASA through Hubble Fellowship - Space Telescope Science Institute ...
P. Senchyna, D. Stark, A. Vidal-Garc'ia, J. Chevallard, S. Charlot, R. Mainali, T. Jones, A. Wofford, A. Feltre, Julia Gutkin   +9 more
semanticscholar   +1 more source

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