Results 101 to 110 of about 136,681 (287)

The 2200 A bump and the UV extinction curve

, 2012
The 2200 A bump is a major figure of interstellar extinction. Extinction curves with no bump however exist and are, with no exception, linear from the near-infrared down to 2500 A at least, often over all the visible-UV spectrum.
Bondar, Bradley, Cardelli, Cecchi-Pestellini, Divan, Désert, Fitzpatrick, Gordon, Herbig, Li, Li, Mulas, Nandy, Papoular, Savage, Schalén, Seaton, Steglich, Wegner, Whitford, Wickramasinghe, Wu, Yastrebov, Zagury, Zagury, Zagury, Zagury, Zagury, Zagury, Zagury, Zagury, Zagury, Zagury, Zonca   +33 more
core   +1 more source

[C II] absorption and emission in the diffuse interstellar medium across the Galactic plane [PDF]

, 2014
Aims. Ionized carbon is the main gas-phase reservoir of carbon in the neutral diffuse interstellar medium (ISM) and its 158 μm fine structure transition [C ii] is the most important cooling line of the diffuse ISM.
M. Gerin, M. Gerin, M. Ruaud, J. Goicoechea, A. Gusdorf, A. Gusdorf, B. Godard, B. Godard, M. Luca, M. Luca, E. Falgarone, E. Falgarone, P. Goldsmith, D. Lis, D. Lis, D. Lis, K. Menten, D. Neufeld, T. Phillips, H. Liszt   +19 more
semanticscholar   +1 more source

Clusters Stagnating During Condensation: Metastable Material or a Separate State of Matter?

Annalen der Physik, Volume 537, Issue 10, October 2025.
Condensation stagnation, that is, the existence of a delay between nucleation and growth during the gas‐phase particle formation, is a crucial phenomenon, which manifests itself as the presence of supercritical clusters in resulting particulates. The light emission signature of stagnant clusters is identified in the magnesium particle flame in air, and,
Nicholas R. Jaramillo, Cole A. Ritchie, Michelle L. Pantoya, Igor E. Agranovski, Igor Altman   +4 more
wiley   +1 more source

The Local Group L-band Survey: Probing Cold Atomic Gas in IC 10 with Neutral Hydrogen Absorption

The Astrophysical Journal
We present the first localized detections of the cold neutral medium (CNM) in IC 10, offering a rare view of dense atomic gas in a low-metallicity ( Z / Z _⊙  ∼ 0.27) dwarf galaxy.
Ioana A. Stelea, Snežana Stanimirović, Nickolas M. Pingel, Hongxing Chen, Eric W. Koch, Adam K. Leroy, Erik Rosolowsky, Chang-Goo Kim, Alberto D. Bolatto, Julianne J. Dalcanton, Michael P. Busch, Harrisen Corbould, J. R. Dawson, Cosima Eibensteiner, Amanda Kepley, Melanie Krips, Claire E. Murray, Julia Roman-Duval, Daniel R. Rybarczyk, Evan D. Skillman, Elizabeth Tarantino, Vicente Villanueva, Thomas G. Williams   +22 more
doaj   +1 more source

Interstellar absorption lines in the spectrum of 3C 273

The Astrophysical Journal, 1983
Absorption lines near the rest wavelengths of the Si IV doublet (wavelengths 1393.76, 1402.77) with equivalent widths 533 and 235 mA are reported in the spectrum of QSO 3C 273. The profiles show the nature of hot gas along a high-latitude (b = 64 deg) line of sight through our entire halo.
D. G. York, C. C. Wu, J. C. Blades, S. Ratcliff, L. L. Cowie, D. C. Morton   +5 more
openaire   +1 more source

An extended XMM-Newton observation of the Seyfert galaxy NGC 4051. I. Evidence for a shocked outflow

, 2010
An extended XMM-Newton observation of the Seyfert 1 galaxy NGC 4051 has revealed a rich absorption line spectrum indicating the presence of a photoionized outflow with a wide range of velocities and ionization parameter.
Pounds, K. A., Vaughan, S.
core   +1 more source

The Gaia-ESO Survey: Extracting diffuse interstellar bands from cool star spectra: DIB-based interstellar medium line-of-sight structures at the kpc scale [PDF]

, 2014
Aims. We study how diffuse interstellar bands (DIBs) measured toward distance-distributed target stars can be used to locate dense interstellar (IS) clouds in the Galaxy and probe a line-of-sight (LOS) kinematical structure, a potentially useful tool ...
L. Puspitarini, R. Lallement, C. Babusiaux, H. Chen, P. Bonifacio, L. Sbordone, E. Caffau, S. Duffau, V. Hill, A. Monreal-Ibero, F. Royer, Frédéric Arenou, R., A. Peralta, J. Drew, R. Bonito, J. Lopez-Santiago, E. Alfaro, T. Bensby, A. Bragaglia, E. Flaccomio, A. Lanzafame, E. Pancino, A. Recio-Blanco, R. Smiljanic, M. Costado, C. Lardo, P. Laverny, T. Zwitter   +28 more
semanticscholar   +1 more source

Sleep and Dreams as Reflected by Science Fiction Literature and Films—Anything to Learn From?

Journal of Sleep Research, Volume 34, Issue 5, October 2025.
ABSTRACT Sleep and dreams are frequent themes in science fiction (Sci‐Fi) literature and films, often used to explore questions about consciousness, reality, technology and the human experience. Sci‐Fi authors and filmmakers utilise the enigmatic nature of sleep and dreams to blur the boundaries between reality and imagination, raising philosophical ...
Dieter Riemann, Christoph Nissen, Pierre A. Geoffroy, Bernd Feige, Jason Ellis   +4 more
wiley   +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

First detection of [N II] 205 micrometer absorption in interstellar gas [PDF]

, 2014
We present high resolution [NII] 205 micrometer ^3P_1-^3P_0 spectra obtained with Herschel-HIFI towards a small sample of far-infrared bright star forming regions in the Galactic plane: W31C (G10.6-0.4), W49N (G43.2-0.1), W51 (G49.5-0.4), and G34.3+0.1 ...
C. Persson, M. Gerin, B. Mookerjea, J. Black, M. Olberg, J. Goicoechea, G. Hassel, E. Falgarone, F. Levrier, K. Menten, J. Pety   +10 more
semanticscholar   +1 more source