Results 101 to 110 of about 210,358 (255)

Deuterated Polycyclic Aromatic Hydrocarbons in the Interstellar Medium: Constraints from the Orion Bar as Observed by the James Webb Space Telescope

The Astrophysical Journal
The gas-phase abundances of deuterium (D) in the local interstellar medium exhibit considerable regional variations. Particularly, in some regions the gas-phase D abundances are substantially lower than the primordial D abundance generated in the Big ...
X. J. Yang, Aigen Li
doaj   +1 more source

The density distribution and 58.4 nm radiation intensity of interstellar helium in the heliosphere: a model simulation

Earth and Planetary Physics
Research on the interstellar medium and its interaction with the solar system constitutes a significant topic in planetary physics. As the Sun traverses the local interstellar cloud, interstellar neutrals penetrate the heliosphere, forming the ...
JiaLing Lyu, ChongJing Yuan, Fei He, BeiLi Ying   +3 more
doaj   +1 more source

The HI Distribution Observed toward a Halo Region of the Milky Way

Galaxies, 2017
We use observations of the neutral atomic hydrogen (HI) 21-cm emission line to study the spatial distribution of the HI gas in a 80° × 90° region of the Galaxy halo.
Ericson López, Jairo Armijos, Mario Llerena, Franklin Aldás   +3 more
doaj   +1 more source

The pre-shock gas of SN1006 from HST/ACS observations

, 2007
We derive the pre-shock density and scale length along the line of sight for the collisionless shock from a deep HST image that resolves the H alpha filament in SN1006 and updated model calculations.
J. C. Raymond, Jones L. R., K. E. Korreck, P. Ghavamian, Q. C. Sedlacek, R. Sankrit, Raymond J. C., W. P. Blair, Willingale R.   +8 more
core   +2 more sources

Photoelectron Spectroscopy of the Phosphorus Monosulfide (PS) and Phosphorus Monoxide (PO) Radicals

Small Structures, Volume 7, Issue 1, January 2026.
Sketch of the experiment to measure the photo electron spectrum of the PS radical produced in situ with a mixture of PH3, H2S and F atoms. PO and PS radicals are the smallest units of phosphorus oxides and phosphorus sulfides, respectively, two rich families of refractory compounds widely employed in industrial and technological applications. These two
Pedro Recio, Jorge Alonso de la Fuente, Myriam Drissi, Niyazi Bulut, Jean Christophe Loison, Gustavo Garcia, Susana Gomez Carrasco, Cristina Sanz Sanz, Luis Bañares, Sonia Marggi Poullain, Alexandre Zanchet   +10 more
wiley   +1 more source

Resolved ALMA [C ii] 158 μm Observations at Cosmic Noon: Interstellar Medium Structure and Dynamics of the Starbursting QSO SDSS J1000

The Astrophysical Journal
We present spatially resolved Atacama Large Millimeter/submillimeter Array Band 9 observations of the [C ii ] 158 μ m fine structure line from an optically selected quasar, SDSS J100038.01+020822.4 (J1 000 ), at z = 1.8275.
Christopher Rooney, Bo Peng, Amit Vishwas, Gordon Stacey, Thomas Nikola, Cody Lamarche, Catie Ball, Carl Ferkinhoff, Drew Brisbin, Steven Hailey-Dunsheath   +9 more
doaj   +1 more source

The Rest-Frame Submillimeter Spectrum of High-Redshift, Dusty, Star-Forming Galaxies [PDF]

, 2014
We present the average rest-frame spectrum of high-redshift dusty, star-forming galaxies from 250-770GHz. This spectrum was constructed by stacking ALMA 3mm spectra of 22 such sources discovered by the South Pole Telescope and spanning z=2.0-5.7.
Aguirre, J. E., Aravena, M., Ashby, M. L. N., Bethermin, M., Bothwell, M. S., Bradford, C. M., Brodwin, M., Carlstrom, J. E., Chapman, S. C., Crawford, T. M., de Breuck, C., Fassnacht, C. D., Gonzalez, A. H., Greve, T. R., Gullberg, B., Hezaveh, Y., Holzapfel, W. L., Husband, K., Ma, J., Malkan, M., Marrone, D. P., Murphy, E. J., Reichardt, C. L., Rotermund, K. M., Spilker, J. S., Stalder, B., Stark, A. A., Strandet, M., Vieira, J. D., Weiss, A., Welikala, N.   +30 more
core   +5 more sources

Lyman α line and continuum radiative transfer in a clumpy interstellar medium [PDF]

, 2013
This thesis focuses on the intrinsically strongest spectral signature of star-forming galaxies: the Lyman alpha recombination line of the hydrogen atom (hereafter Lya).
F. Duval, D. Schaerer, G. Ostlin, P. Laursen   +3 more
semanticscholar   +1 more source

On the Electromagnetic Energy Flow Along Geodesics

Radio Science, Volume 61, Issue 1, January 2026.
Abstract We present a field‐theoretic framework for modeling electromagnetic energy propagation in heterogeneous media by introducing the concept of electromagnetic geodesics. Unlike traditional ray optics, which assumes either a straight‐line propagation or a simple bending in refractive media, our approach formulates wave propagation as geodetic ...
Jacob T. Fokkema, Peter M. van den Berg
wiley   +1 more source

Cool Gas in High Redshift Galaxies

, 2013
Over the last decade, observations of the cool interstellar medium in distant galaxies via molecular and atomic fine structure line emission has gone from a curious look into a few extreme, rare objects, to a mainstream tool to study galaxy formation ...
Carilli, Chris, Walter, Fabian
core   +1 more source