Results 11 to 20 of about 3,566,597 (273)

A High-resolution Study of the Cold Neutral Medium in and around 30 Doradus

The Astrophysical Journal
With the aim of evaluating the roles of the cold neutral medium (CNM) in the cloud-scale baryon cycle, we perform a high-resolution study of the CNM in and around the extreme star-forming region 30 Doradus (30 Dor).
Gyueun Park, Min-Young Lee, John M. Dickey, Nick M. Pingel, James Dempsey, Helga Dénes, Steven Gibson, Katie Jameson, Ian Kemp, Chang-Goo Kim, Denis Leahy, Bumhyun Lee, Callum Lynn, Yik Ki Ma, Antoine Marchal, Naomi M. McClure-Griffiths, Eric Muller, Hiep Nguyen, Snežana Stanimirović, Jacco Th. Van Loon, (The GASKAP-H I collaboration)   +20 more
doaj   +4 more sources

Modeling the statistics of the cold neutral medium in absorption-selected high-redshift galaxies [PDF]

Astronomy & Astrophysics, 2020
We present a statistical model of the selection function of cold neutral gas in high-redshift (z = 2.5) absorption systems. The model is based on the canonical two-phase model of the neutral gas in the interstellar medium and contains only one parameter for which we do not have direct observational priors: namely the central pressure of an L* halo at z 
Krogager, Jens-Kristian, Noterdaeme, Pasquier   +1 more
openaire   +3 more sources

New Neutral–Neutral Pathways in the Chemistry of Silicon- and Sulfur-bearing Molecules in the Cold Interstellar Medium

The Astrophysical Journal
Silicon is the most abundant third-row element in space and plays a major role in interstellar dust as silicate particles. Furthermore, silicon is important for the formation of silicate dust in oxygen-rich AGB stars and in supernova remnants.
Samuel F. M. Costa, Márcio O. Alves, Sérgio Pilling, Jing Li, Breno R. L. Galvão   +4 more
doaj   +2 more sources

Filamentary Molecular Cloud Formation via Collision-induced Magnetic Reconnection in a Cold Neutral Medium

The Astrophysical Journal
We have investigated the possibility of molecular cloud formation via the collision-induced magnetic reconnection (CMR) mechanism of the cold neutral medium (CNM).
Shuo Kong (孔朔), Rowan J. Smith, David Whitworth, Erika T. Hamden   +3 more
doaj   +6 more sources

H I absorption in MHONGOOSE

Astronomy & Astrophysics
Combined H I emission–absorption studies constrain the spin temperature and phase structure of the neutral atomic hydrogen interstellar medium (ISM). However, these studies have largely been limited to the Milky Way and the Local Group.
de Blok W. J. G., Maccagni F. M., Chemin L., Haubner K., Morganti R., Oosterloo T. A., Kleiner D., Veronese S., Kurapati S., Healy J.   +9 more
doaj   +3 more sources

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   +4 more sources

Switzerland and Sub-Saharan Africa in the Cold War, 1967-1979 [PDF]

, 2021
In this volume Sabina Widmer analyses neutral Switzerland’s foreign policy in Angola, Mozambique, Ethiopia, and Somalia during the armed conflicts and regime changes of the late 1960s and 1970s, in a context of global Cold War and decolonisation ...
Widmer, Sabina, Sabina Widmer
core   +1 more source

H i column density statistics of the cold neutral medium from absorption studies [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
Abstract Physical properties of the tiny scale structures in the cold neutral medium (CNM) of galaxies is a long-standing puzzle. Only a few lines of sights in our Galaxy have been studies with mixed results on the scale-invariant properties of such structures.
Pavan Kumar Vishwakarma, Prasun Dutta
openaire   +2 more sources

The formation of monosubstituted cyclopropenylidene derivatives in the interstellar medium via neutral-neutral reaction pathways [PDF]

, 2022
Five substituted cyclopropenylidene derivatives (c-C3HX, X = CN, OH, F, NH2), all currently undetected in the interstellar medium (ISM), are found herein to have mechanistically viable, gas-phase formation pathways through neutral-neutral additions of ·X
Fortenberry, Ryan C., Flint, Athena R.
core   +1 more source

Synthesis of isoquinolines by irradiation of 1-methoxy-2-azabuta-1,3-dienes in a neutral medium [PDF]

, 2001
We describe, for the first time, the photocyclization of 2-azadienes in a neutral medium. The reaction leads to the formation of isoquinolines. © 2001 Elsevier Science Ltd.
Campos, P.J. [0000-0002-8917-0318], Caro, M., Rodríguez, M.A. [0000-0003-0123-9905], Campos, P.J., Rodríguez, M.A.   +4 more
core   +1 more source