Results 61 to 70 of about 41,542 (217)

Supernova Remnants as Clues to Their Progenitors

, 2017
Supernovae shape the interstellar medium, chemically enrich their host galaxies, and generate powerful interstellar shocks that drive future generations of star formation.
A Chiotellis, A Rest, A Rest, AV Filippenko, BF Williams, BJ Williams, C Badenes, C Badenes, C Badenes, C Badenes, D Maoz, DJ Patnaude, DJ Patnaude, DJ Patnaude, F Brachwitz, H Yamaguchi, H Yamaguchi, I Hachisu, J-J Lee, JC Raymond, KA Ponder, KJ Borkowski, KJ Shen, KJ Shen, KM Ferrière, KM Schure, L Chomiuk, LA Lopez, MA Pérez-Torres, MH Kerkwijk van, N Smith, O Krause, P Slane, PA Young, R Margutti, R McCray, RA Chevalier, RA Chevalier, S Katsuda, S Park, S-C Yoon, SE Woosley, SJ Smartt, T DeLaney, TJ Moriya, TJ Moriya, U Hwang, W Hillebrandt, WE Kerzendorf, ZG Jennings   +49 more
core   +1 more source

Techniques for Galactic Dust Measurements in the Heliosphere [PDF]

, 1999
Galactic interstellar dust (ISD) is the major ingredient in planetary formation. However, information on this important material has been extremely limited.
Auer, Auer, Baggaley, Baguhl, Brownlee, Dorschner, Eberhard Grün, Frisch, Frisch, Grün, Grün, Grün, Grün, Harald Krüger, Horányi, Håkan Svedhem, Jochen Kissel, Lallement, Landgraf, Markus Landgraf, Mathis, Mathis, Mihaly Horányi, Peter Withnell, Ralf Srama, Ratcliff, Sagdeev, Simpson, Simpson, Srama, Svedhem, Taylor, Tuzzolino, Witte, Zinner   +34 more
core   +2 more sources

Thermodynamics of Giant Molecular Clouds: The Effects of Dust Grain Size

The Astrophysical Journal
The dust grain size distribution (GSD) likely varies significantly across star-forming environments in the Universe, but its impact on star formation remains unclear. This ambiguity arises because the GSD interacts nonlinearly with processes like heating,
Nadine H. Soliman, Philip F. Hopkins, Michael Y. Grudić   +2 more
doaj   +1 more source

Metallic messengers from the cosmos: Rare (Al,Cu)‐bearing meteorites from the Project Stardust collection

Meteoritics &Planetary Science, EarlyView.
Abstract We report the discovery of (Al,Cu)‐bearing metallic alloys in two micrometeorites found in the Project Stardust collection gathered from urban rooftop environments in Norway. Most of the alloys are the same as those found in the Khatyrka meteorite and other micrometeorites, though one has a composition that has not been reported previously ...
Luca Bindi, Jon Larsen, Jan B. Kihle, Guangming Cheng, Jinping Hu, Nan Yao, Chi Ma, Yunbin Guan, Paul D. Asimow, Paul J. Steinhardt   +9 more
wiley   +1 more source

The dynamic interstellar medium in NGC 4438

The Astronomical Journal, 1993
We present multiwavelength observations of the interstellar medium in the disturbed galaxy NGC 4438. We find extended emission-line filaments, which are kinematically unrelated to the galaxy disk. For one of these features, an extended loop, we propose a scheme in which the 'bubble' seen at radio wavelengths has swept a clear path for outflowing ...
Ann E. Wehrle, William C. Keel
openaire   +2 more sources

A Study of the Dynamics of Dust from the Kuiper Belt: Spatial Distribution and Spectral Energy Distribution [PDF]

, 2002
The dust produced in the Kuiper Belt (KB) spreads throughout the Solar System forming a dust disk. We numerically model the orbital evolution of KB dust and estimate its equilibrium spatial distribution and its brightness and spectral energy ...
Amaya Moro-Martín, Renu Malhotra, Stern S. A., Yamamoto S.   +3 more
core   +3 more sources

Ab Initio Study of Glycine Formation in the Condensed Phase: Carbon Monoxide, Formaldimine, and Water Are Enough

The Astrophysical Journal, 2023
Glycine is considered to be crucial in the formation of proteins and prebiotic substances. Nevertheless, the mechanism of spontaneous glycine formation under prebiotic Earth conditions or within the interstellar medium (ISM) remains a topic of debate ...
Francisco Carrascoza, Piotr Lukasiak, Wieslaw Nowak, Jacek Blazewicz   +3 more
doaj   +1 more source

Visionaries and Crackpots, Maniacs and Saints: Existential Risk and the Politics of Longtermism

Ratio, EarlyView.
ABSTRACT Despite advancing strong claims about our collective priorities, longtermism has received little attention in debates in political philosophy. I first provide an account of longtermism that highlights the way it departs from established work on intergenerational justice.
Alex McLaughlin
wiley   +1 more source

Formation of molecular hydrogen on analogues of interstellar dust grains: experiments and modelling

, 2005
Molecular hydrogen has an important role in the early stages of star formation as well as in the production of many other molecules that have been detected in the interstellar medium.
Averna D, Duley W W, Gianfranco Vidali, Giulio Manicó, Gould R J, Hagai B Perets, Hornekaer L, Jennisken P, Joe Roser, Menzel D, Ofer Biham, Perets H B, Perry J S A, Petrenko V F, Pirronello V, Pirronello V, Pirronello V, Pirronello V, Pirronello V, Valerio Pirronello, Vidali G, Zecho T   +21 more
core   +1 more source

Jeans instability of interstellar gas clouds in the background of weakly interacting massive particles [PDF]

, 1998
Criterion of the Jeans instability of interstellar gas clouds which are gravitationally coupled with weakly interacting massive particles is revisited. It is established that presence of the dark matter always reduces the Jeans length, and in turn, Jeans
David Tsiklauri, Tsiklauri D., Usami M.
core   +2 more sources