Results 51 to 60 of about 34,658 (198)

A Neutral Hydrogen Absorption Study of Cold Gas in the Outskirts of the Magellanic Clouds Using the GASKAP-H i Survey

The Astronomical Journal
Cold neutral hydrogen (H i ) is a crucial precursor for molecular gas formation and can be studied via H i absorption. This study investigates H i absorption in low column density regions of the Small and Large Magellanic Clouds (SMC and LMC) using the ...
Hongxing Chen, Snežana Stanimirović, Nickolas M. Pingel, James Dempsey, Frances Buckland-Willis, Susan E. Clark, Helga Dénes, John M. Dickey, Steven Gibson, Katherine Jameson, Ian Kemp, Denis Leahy, Min-Young Lee, Callum Lynn, Yik Ki Ma, N. M. McClure-Griffiths, Claire E. Murray, Hiep Nguyen, Lucero Uscanga, Jacco Th. van Loon, Enrique Vázquez-Semadeni   +20 more
doaj   +1 more source

Star formation across cosmic time

Fundamental Plasma Physics
The interstellar medium of galaxies is composed of multiple phases, including molecular, atomic, and ionized gas, as well as dust. Stars are formed within this medium from cold molecular gas clouds, which collapse due to their gravitational attraction ...
Jonathan Freundlich
doaj   +1 more source

The chemistry of fluorine-bearing molecules in diffuse and dense interstellar gas clouds

, 2005
We present a theoretical investigation of the chemistry of fluorine-bearing molecules in diffuse and dense interstellar gas clouds. The chemistry of interstellar fluorine is qualitatively different from that of any other element, because - unlike the ...
Neufeld, David A., Schilke, Peter, Wolfire, Mark G.   +2 more
core   +1 more source

oMEGACat. VII. Tracing Interstellar and Intracluster Medium of ω Centauri Using Sodium Absorptions

The Astrophysical Journal
We investigate the foreground interstellar medium along the line of sight and intracluster medium of ω Centauri ( ω Cen) by measuring the equivalent width of Na I D absorptions from MUSE observations. The large line-of-sight velocity difference between ω
Z. Wang, A. C. Seth, M. Latour, J. Strader, M. Häberle, N. Neumayer, C. Clontz, S. Kamann, M. S. Nitschai, M. Alfaro-Cuello, A. Bellini, A. Feldmeier-Krause, M. Libralato, A. P. Milone, P. J. Smith, S. O. Souza, G. van de Ven   +16 more
doaj   +1 more source

Magnetic Misalignment of Interstellar Dust Filaments

The Astrophysical Journal, 2023
We present evidence for scale-independent misalignment of interstellar dust filaments and magnetic fields. We estimate the misalignment by comparing millimeter-wave dust-polarization measurements from Planck with filamentary structures identified in ...
Ari J. Cukierman, S. E. Clark, George Halal   +2 more
doaj   +1 more source

The Local Group L-band Survey: The First Measurements of Localized Cold Neutral Medium Properties in the Low-metallicity Dwarf Galaxy NGC 6822

The Astrophysical Journal
Measuring the properties of the cold neutral medium (CNM) in low-metallicity galaxies provides insights into heating and cooling mechanisms in early Universe-like environments.
Nickolas M. Pingel, Hongxing Chen, Snežana Stanimirović, Eric W. Koch, Adam K. Leroy, Erik Rosolowsky, Chang-Goo Kim, Julianne J. Dalcanton, Fabian Walter, Michael P. Busch, Ryan Chown, Jennifer Donovan Meyer, Cosima Eibensteiner, Deidre A. Hunter, Sumit K. Sarbadhicary, Elizabeth Tarantino, Vicente Villanueva, Thomas G. Williams   +17 more
doaj   +1 more source

Revisiting CN− Formation Mechanisms in Electron Collisions with Benzonitrile

ChemPhysChem, Volume 27, Issue 1, January 2026.
This study explores negative ion formation via electron attachment, revealing CN− formation at 3.0 and 7–10 eV. Dissociation pathways are analyzed using G4(MP2) and CASPT2 calculations, highlighting the coupling between the π4* and σ* resonances critical for interstellar chemistry. Radiation‐induced processes in the aromatic cyano compound benzonitrile
Rodrigo Rodrigues, Mónica Mendes, Daniel Bou‐Debes, João Ameixa, Ali Kamali, Oddur Ingólfsson, Samuel Eden, Lucas M. Cornetta, Filipe Ferreira da Silva   +8 more
wiley   +1 more source

Where Does the Energy Go during the Interstellar NH3 Formation on Water Ice? A Computational Study

The Astrophysical Journal, 2023
In the coldest (10–20 K) regions of the interstellar medium, the icy surfaces of interstellar grains serve as solid-state supports for chemical reactions.
Stefano Ferrero, Stefano Pantaleone, Cecilia Ceccarelli, Piero Ugliengo, Mariona Sodupe, Albert Rimola   +5 more
doaj   +1 more source

From the warm magnetized atomic medium to molecular clouds

, 2008
{It has recently been proposed that giant molecular complexes form at the sites where streams of diffuse warm atomic gas collide at transonic velocities.} {We study the global statistics of molecular clouds formed by large scale colliding flows of warm ...
Audit, Ballesteros-Paredes, Crutcher, E. Audit, E. Vázquez-Semadeni, Fromang, Fryxell, Glover, Heitsch, Heitsch, Hennebelle, Hennebelle, Hennebelle, Koyama, Koyama, P. Hennebelle, R. Banerjee, R. S. Klessen, Teyssier, Troland, Vázquez-Semadeni, Vázquez-Semadeni, Williams   +22 more
core   +3 more sources

ISO spectroscopy of gas and dust: from molecular clouds to protoplanetary disks [PDF]

, 2004
Observations of interstellar gas-phase and solid-state species in the 2.4-200 micron range obtained with the spectrometers on board the Infrared Space Observatory are reviewed.
Abergel A, Bacmann A, Baluteau JP, Bertoldi F, Bockelée-Morvan D, Boogert ACA, Boogert ACA, Boogert ACA, Boogert ACA, Boudin N, Boulanger F, Bouwman J, Calvet N, Caux E, Ceccarelli C, Ceccarelli C, Ceccarelli C, Ceccarelli C, Cernicharo J, Cesarsky C, Cesarsky D, Cesarsky D, Cesarsky D, Clegg PE, Dartois E, Dartois E, Dartois E, de Graauw Th, de Graauw Th, Demyk K, Demyk K, Ehrenfreund P, Ehrenfreund P, Ehrenfreund P, Ewine F. van Dishoeck, Feldt M, Fuente A, Gerakines PA, Gerakines PA, Giannini T, Giannini T, Gürtler J, Gürtler J, Habing HJ, Helmich FP, Honda M, Kemper F, Kessler MF, Lahuis F, Lemke D, Liseau R, Liseau R, Lorenzetti D, Lorenzetti D, Léger A, Malfait K, Malfait K, Mattila K, Moutou C, Moutou C, Nisini B, Nisini B, Nisini B, Nisini B, Noriega-Crespo A, Peeters E, Rho J, Rosenthal D, Schutte WA, Schutte WA, Schutte WA, Siebenmorgen R, Spinoglio L, Teixeira TC, Tielens AGGM, Timmermann R, Timmermann R, Valentijn EA, van den Ancker ME, van den Ancker ME, van den Ancker ME, van den Ancker ME, van der Tak FFS, van Dishoeck EF, van Dishoeck EF, van Kerckhoven C, Vandenbussche B, Vastel C, Verstraete L, Waelkens C, Walmsley CM, White GJ, Wright CM, Wright CM   +93 more
core   +3 more sources