Results 31 to 40 of about 34,807 (192)

Atomic and Molecular Gas Components in Spiral Galaxies of the Virgo Cluster

, 2012
Based on two models, we investigate the molecular-to-atomic gas ratio in Virgo cluster galaxies in comparison with field galaxies. We show that the enhanced metallicity for cluster members and the ram pressure stripping of atomic gas from the disk ...
A. Boselli, A. Chung, A. D. Bolatto, A. K. Leroy, A. K. Leroy, A. V. Kasparova, A.V. Kasparova, B. G. Elmegreen, B. Vollmer, C. A. Narayan, C. F. McKee, E. D. S. R. C. K. G. A. Shields, E. F. Bell, E. J. Chung, E. Roediger, E. Rosolowsky, F. Bigiel, G. A. Shields, G. Gavazzi, G. H. Heald, H. S. Liszt, I. Dicaire, J. D. Kenney, J. D. Kenney, K. Nishiyama, L. Blitz, L. Blitz, L. Ferrarese, L. Magrini, M. Fumagalli, M. Fumagalli, M. R. Krumholz, M. R. Krumholz, N. A. Devereux, O. Daigle, O. L. Dors, O.V. Abramova, P. Girichidis, R. A. Koopmann, V. C. Rubin, V. Cayatte, Y. Sofue   +41 more
core   +1 more source

The PhotoDissociation Region Toolbox: Software and Models for Astrophysical Analysis

The Astronomical Journal, 2022
The PhotoDissociation Region Toolbox provides comprehensive, easy-to-use, public software tools and models that enable an understanding of the interaction of the light of young, luminous, massive stars with the gas and dust in the Milky Way and in other ...
Marc W. Pound, Mark G. Wolfire
doaj   +1 more source

The effect of ISM turbulence on the gravitational instability of galactic discs

, 2012
We investigate the gravitational instability of galactic discs, treating stars and cold interstellar gas as two distinct components, and taking into account the phenomenology of turbulence in the interstellar medium (ISM), i.e.
Agertz, Alessandro B. Romeo, Azimlu, Bahcall, Ballesteros-Paredes, Beaumont, Begum, Bertin, Binney, Block, Bolatto, Bournaud, Cacciato, Collins, Combes, Dutta, Dutta, Dutta, Dutta, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Federrath, Federrath, Field, Fleck, Forbes, Gerssen, Heyer, Hughes, Jog, Jog, Jog, Kauffmann, Kim, Kowal, Kowal, Kritsuk, Larson, Lazarian, Leroy, Lin, Lombardi, McKee, Price, Puech, Rafikov, Roman-Duval, Romeo, Romeo, Romeo, Romeo, Roy, Schmidt, Shadmehri, Shen, Solomon, Swinbank, Sánchez, Toomre, Vandervoort, Volker Hoffmann, Wilson, Zhang   +65 more
core   +1 more source

Infrared Spectroscopy of Molecular Supernova Remnants [PDF]

, 2000
We present Infrared Space Observatory spectroscopy of sites in the supernova remnants W28, W44, and 3C391, where blast waves are impacting molecular clouds. Atomic fine-structure lines were detected from C, N, O, Si, P, and Fe. The S(3) and S(9) lines of
Arikawa Y., Clegg P. E., de Graauw T., Desert F.-X., Jeonghee Rho, Kessler M. F., Krueger T. K., Lagache G., Launay J. M., Liu X.-W., Mendoza C., Nussbaumer H., Oliva E., Oliva E., Reach W. T., Schmutzler T., William T. Reach   +16 more
core   +2 more sources

The C(3P) + NH3 reaction in interstellar chemistry: II. Low temperature rate constants and modeling of NH, NH2 and NH3 abundances in dense interstellar clouds

, 2015
A continuous supersonic flow reactor has been used to measure rate constants for the C + NH3 reaction over the temperature range 50 to 296 K. C atoms were created by the pulsed laser photolysis of CBr4.
Bourgalais, Jérémy, Capron, Michael, Goulay, Fabien, Hickson, Kevin M., Loison, Jean-Christophe, Picard, Sebastien D. Le, Wakelam, Valentine   +6 more
core   +6 more sources

Dust and gas in star-forming complexes in NGC 3351, NGC 5055, and NGC 5457

Open Astronomy, 2023
We present a study of the interstellar medium parameters in star-forming complexes (SFCs) in NGC 3351, NGC 5055, and NGC 5457 galaxies. This study concludes our previous investigations of gas and dust in a number of spiral galaxies.
Smirnova Ksenia Ildarovna, Wiebe Dmitri Siegfriedovich   +1 more
doaj   +1 more source

Multiphase turbulent interstellar medium: some recent results from radio astronomy

, 2015
The radio frequency 1.4 GHz transition of the atomic hydrogen is one of the important tracers of the diffuse neutral interstellar medium. Radio astronomical observations of this transition, using either a single dish telescope or an array interferometer,
Roy, Nirupam
core   +2 more sources

Relative In-flight Response of IBEX-Lo to Interstellar Neutral Helium Atoms

The Astrophysical Journal Supplement Series, 2023
The IBEX-Lo instrument on the Interstellar Boundary Explorer (IBEX) mission measures interstellar neutral (ISN) helium atoms. The detection of helium atoms is made through negative hydrogen (H ^− ) ions sputtered by helium atoms from the IBEX-Lo’s ...
P. Swaczyna, M. Bzowski, S. A. Fuselier, A. Galli, J. Heerikhuisen, M. A. Kubiak, D. J. McComas, E. Möbius, F. Rahmanifard, N. A. Schwadron   +9 more
doaj   +1 more source

Filtration of Interstellar Neutral Helium by Elastic and Charge Exchange Collisions in Heliospheric Boundaries

The Astrophysical Journal, 2023
Interstellar neutral (ISN) helium atoms penetrating the heliosphere are used to find the flow velocity and temperature of the very local interstellar medium near the heliosphere.
P. Swaczyna, F. Rahmanifard, E. J. Zirnstein, J. Heerikhuisen   +3 more
doaj   +1 more source

Spatial distribution of interstellar gas in the innermost 3 kpc of our Galaxy

, 2007
We review the present observational knowledge on the spatial distribution and the physical state of the different (molecular, atomic and ionized) components of the interstellar gas in the innermost 3 kpc of our Galaxy -- a region which we refer to as the
Afflerbach, Almy, Anders, Arimoto, Athanassoula, Athanassoula, Bally, Bally, Benjamin, Binney, Binney, Bissantz, Bissantz, Bitran, Burton, Burton, Burton, Carr, Combes, Contopoulos, Contopoulos, Cordes, Dahmen, Englmaier, Ferrière, Ferrière, Fux, Heiligman, Jenkins, K. Ferrière, Kaifu, Koyama, Koyama, Launhardt, Lazio, Liszt, Liszt, Maciel, Magnani, Martin, Mehringer, Mehringer, Mezger, Morris, Najarro, Oka, Oka, P. Jean, Rodríguez-Fernández, Rohlfs, Rolleston, Sanders, Sawada, Scoville, Sellwood, Shaver, Smartt, Snowden, Sodroski, Sofue, Sofue, Strong, Taylor, W. Gillard, Wada, Wolfire, Yamauchi   +66 more
core   +4 more sources