Results 91 to 100 of about 34,658 (198)

FAST Search for Circumstellar Atomic Hydrogen. IV. Bubbles Associated with Planetary Nebulae

The Astronomical Journal
Investigating the bubbles generated by the interaction between asymptotic giant branch stellar outflows and the interstellar medium (ISM) is pivotal for elucidating the mechanism by which evolved low- to intermediate-mass stars enrich the ISM with heavy ...
Jun-Yang Liu, Yong Zhang, Xu-Jia Ouyang
doaj   +1 more source

Study of H i Turbulence in the SMC Using Multipoint Structure Functions

The Astrophysical Journal
Turbulence in the interstellar medium (ISM) plays an important role in many physical processes, including forming stars and shaping complex ISM structures.
Bumhyun Lee, Min-Young Lee, Jungyeon Cho, Nickolas M. Pingel, Yik Ki Ma, Katie Jameson, James Dempsey, Helga Dénes, John M. Dickey, Christoph Federrath, Steven Gibson, Gilles Joncas, Ian Kemp, Shin-Jeong Kim, Callum Lynn, Antoine Marchal, N. M. McClure-Griffiths, Hiep Nguyen, Amit Seta, Juan D. Soler, Snežana Stanimirović, Jacco Th. van Loon   +21 more
doaj   +1 more source

X-ray spectroscopic observations and modeling of supernova remnants [PDF]

The X-ray observations of young remnants and their theoretical interpretation are described. A number of questions concerning the nature of the blast wave interaction with the interstellar gas and grains and of atomic processes in these hot plasmas are ...
Shull, J. M.
core   +1 more source

Chemistry in Dense Molecular Clouds: Theory and Observational Constraints [PDF]

, 1988
For the most part, gas phase models of the chemistry of dense molecular clouds predict the abundances of simple species rather well. However, for larger molecules and even for small systems rich in carbon these models often fail spectacularly.
Blake, Geoffrey A.
core  

Connection Between the Circumgalactic Medium and the Interstellar Medium of Galaxies: Results from the COS-GASS Survey

, 2015
We present a study exploring the nature and properties of the Circum-Galactic Medium (CGM) and its connection to the atomic gas content in the interstellar medium (ISM) of galaxies as traced by the HI 21cm line. Our sample includes 45 low-z (0.026-0.049)
Bordoloi, Rongmon, Borthakur, Sanchayeeta, Catinella, Barbara, Dave, Romeel, Heckman, Timothy M., Kauffmann, Guinevere, Moran, Sean M., Saintonge, Amelie, Schiminovich, David, Thom, Christopher, Tumlinson, Jason   +10 more
core   +2 more sources

Polycyclic aromatic hydrocarbon processing in interstellar shocks

, 2010
Context: PAHs appear to be an ubiquitous interstellar dust component but the effects of shocks waves upon them have never been fully investigated. Aims: To study the effects of energetic (~0.01-1 keV) ion (H, He and C) and electron collisions on PAHs in ...
A. G. G. M. Tielens, A. P. Jones, Banhart, Berné, Borkowski, Bregman, Bregman, Cardelli, Cherchneff, Cosslett, Draine, Draine, Dwek, Désert, E. R. Micelotta, Frenklach, Füller, Guillet, Irwin, Irwin, Jochims, Jones, Jones, Latter, Le Page, Lindhard, Lindhard, McKee, McKee, Micelotta, Montet, Montet, Nakai, O'Connor, O'Halloran, O'Halloran, Omont, Peeters, Pino, Podio, Rapacioli, Serra Díaz-Cano, Smith, Tappe, Tielens, Tielens, Tomita, Welty, Winterbon   +48 more
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Gas-grain models for interstellar anion chemistry

, 2012
Long-chain hydrocarbon anions CnH- (n=4, 6, 8) have recently been found to be abundant in a variety of interstellar clouds. In order to explain their large abundances in the denser (prestellar/protostellar) environments, new chemical models are ...
Brown, Brown, Brünken, Caselli, Cernicharo, Charnley, Cordiner, Cordiner, Cordiner, Crapsi, Eichelberger, Gupta, Harada, Hasegawa, Hassel, Herbst, Lee, Lee, Leger, M. A. Cordiner, McCarthy, Millar, Peeters, Remijan, Roberts, S. B. Charnley, Sakai, Sakai, Sakai, Thaddeus, Umebayashi, Wakelam, Walsh, Öberg   +33 more
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n-Alkanes formed by methyl-methylene addition as a source of meteoritic aliphatics

Communications Chemistry
Aliphatics prevail in asteroids, comets, meteorites and other bodies in our solar system. They are also found in the interstellar and circumstellar media both in gas-phase and in dust grains.
P. Merino, L. Martínez, G. Santoro, J. I. Martínez, K. Lauwaet, M. Accolla, N. Ruiz del Arbol, C. Sánchez-Sánchez, A. Martín-Jimenez, R. Otero, M. Piantek, D. Serrate, R. Lebrón-Aguilar, J. E. Quintanilla-López, J. Mendez, P. L. De Andres, J. A. Martín-Gago   +16 more
doaj   +1 more source

Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6-0.4

, 2010
We report the detection of absorption lines by the reactive ions OH+, H2O+ and H3O+ along the line of sight to the submillimeter continuum source G10.6$-$0.4 (W31C).
A. Contursi, A. Coutens, A. Cros, A. G. G. M. Tielens, A. Lorenzani, B. Godard, B. Mookerjea, Beekoy, C. Gry, C. Joblin, C. Persson, C. Vastel, Corbel, D. A. Neufeld, D. C. Lis, D. Teyssier, de Graauw, E. Dartois, E. Falgarone, E. Herbst, F. Boulanger, Falgarone, Fish, Godard, Goicoechea, H. Gupta, Herbst, Indriolo, J. Black, J. C. Pearson, J. Cernicharo, J. Krelowski, J. Martin-Pintado, J. R. Goicoechea, J. Stutzki, J. Zmuidzinas, K. Klein, K. Menten, Keene, Keto, L. A. Samoska, Le Petit, M. De Luca, M. Gerin, M. Kazmierczak, M. Perault, M. Salez, M. Schmidt, Mathis, Müller, Neufeld, Ossenkopf, P. B. Rimmer, P. Encrenaz, P. F. Goldsmith, P. Hennebelle, P. Hily-Blant, P. Sonnentrucker, Pilbratt, R. Kolos, R. Monje, R. Plume, R. Shipman, S. Philipp-May, S. Schlemmer, S. Yu, Smith, Sollins, Spirko, Stancil, Strahan, T. A. Bell, T. G. Phillips, T. Geballe, T. Giesen, Werner, Wu, Yu   +77 more
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The Impact of External Gas Accretion on the Distribution of H I Gas in Galaxies

The Astrophysical Journal
Using the data from Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) and H i -MaNGA surveys, we build a sample of 37 gas–star misaligned galaxies with robust H i detections, which are believed to have undergone external gas accretion processes.
Qianhan Zhang, Min Bao, Yanmei Chen, Niankun Yu, Yong Shi, Luis C. Ho   +5 more
doaj   +1 more source