Results 81 to 90 of about 1,003,872 (220)

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 grain mantles [PDF]

, 1986
Interstellar molecular grain mantles are an important component of the interstellar dust inside dense molecular clouds as evidenced by the detection of absorption bands at 2.97, 3.08, 4.61, 6.0 and 6.8 microns.
Witteborn, F. C., Bregman, J., Tielens, Alexander G. G. M., Allamandola, Louis J.   +3 more
core  

Photometric Mapping of Carbonaceous/Siliceous Dust and Water Ice in the ISM with JWST: Applications to the Dense Sightlines

The Astronomical Journal
We introduce a new photometric mapping method for the James Webb Space Telescope (JWST) to measure the spatial distribution of carbonaceous dust, siliceous dust, and water ice by using absorption features arising from the grains in the dense interstellar
Burcu Günay, Karl D. Gordon, Joshua E. G. Peek, Marjorie Decleir, Dries Van De Putte, Kirill Tchernyshyov, Michael G. Burton   +6 more
doaj   +1 more source

Infrared absorption and emission characteristics of interstellar PAHs [PDF]

, 1986
The mid-infrared interstellar emission spectrum with features at 3.28, 6.2, 7.7, 8.7 and 11.3 microns is discussed in terms of the Polycyclic Aromatic Hydrocarbon (PAH) hypothesis, which is based on the suggestive, but inconclusive comparison between the
Barker, J. R., Tielens, Alexander G. G. M., Allamandola, Louis J.   +2 more
core  

A reanalysis of interstellar OH absorption observations [PDF]

Monthly Notices of the Royal Astronomical Society, 1996
We reconsider the rotational analysis of the absorption electronic A-X and D-X band systems of OH and show that interstellar observations of OH in front of bright stars have been interpreted with oscillator strengths that are too small by a factor of 2.
openaire   +1 more source

A Definitive Determination of the Interstellar Carbon Abundance toward ρ Ophiuchi A and B

The Astrophysical Journal Letters
We present the results of an effort to derive interstellar gas-phase C ii abundances along the lines of sight toward ρ  Oph A and B. Our analysis is based on high-resolution near-ultraviolet and far-ultraviolet archival spectra acquired with the Space ...
Adam M. Ritchey, S. R. Federman, Daniel E. Welty, Adolf N. Witt   +3 more
doaj   +1 more source

3 Interstellar Ram Jets

, 2016
Published in Proceedings of TVIW 2016, February 28-March 2, Chattanooga, TN / David E. Fields and Abby SherriffThe mass ratio problem in interstellar flight presents a major problem.
Jackson, Albert Allen
core  

The interstellar oxygen-K absorption edge as observed by XMM-Newton

, 2003
High resolution X-ray spectra of the Reflection Grating Spectrometer (RGS) on board the XMM satellite are used to resolve the oxygen K absorption edge. By combining spectra of low and high extinction sources, the observed absorption edge can be split in ...
F. B. Paerels, C. P. de Vries, A. P. Rasmussen, J. S. Kaastra, A. J. den Boggende, J. W. den Herder   +5 more
core   +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

A survey of ultraviolet interstellar absorption lines

The Astrophysical Journal Supplement Series, 1983
A telescope-spectrometer on the Copernicus spacecraft made possible the measurement of many ultraviolet absorption lines produced by the interstellar gas. The present survey provides data on ultraviolet absorption lines in the spectra of 88 early-type stars.
R. C. Bohlin, E. B. Jenkins, L., Jr. Spitzer, D. G. York, J. K. Hill, B. D. Savage, T. P., Jr. Snow   +6 more
openaire   +1 more source