Results 61 to 70 of about 101,631 (216)

Local Swift-BAT active galactic nuclei prefer circumnuclear star formation

, 2017
We use Herschel data to analyze the size of the far-infrared 70micron emission for ...
Davies, R. I., Herrera-Camus, R., Lutz, D., Shimizu, T., Sturm, E., Tacconi, L. J., Veilleux, S.   +6 more
core   +1 more source

Mid- to Far-Infrared spectroscopy of Sharpless 171 [PDF]

, 2003
We have collected one-dimensional raster-scan observations of the active star-forming region Sharpless 171 (S171), a typical HII region-molecular cloud complex, with the three spectrometers (LWS, SWS, and PHT-S) on board ISO.
Baluteau, Boreiko, Boreiko, Cardelli, Carral, Cartledge, Caux, Chan, Clegg, de Graauw, Draine, Felli, Fitzpatrick, Fitzpatrick, Giannini, H. Shibai, Haas, Habing, Harten, Hollenbach, Hollenbach, Holweger, Jones, Jones, Jones, Kaufman, Keenan, Kessler, Kraemer, Lemke, Liseau, MacConnell, Martín-Hernández, Mathis, Mizutani, Mizutani, Moorwood, Morisset, Morton, Poglitsch, Rossano, Rubin, Savage, Sembach, Sofia, Swinyard, T. Onaka, Tielens, Tielens, Vastel, Watson, Wolfire, Wright, Y. Doi, Y. Okada, Yang   +55 more
core   +1 more source

Constraining Electron‐Impact Ionization of O2 Through UV Aurora Observations at Ganymede

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract While photoionization rates of Ganymede's O2 ${\mathrm{O}}_{2}$ dominated atmosphere are well constrained, the contribution of electron‐impact ionization is rather uncertain. Previous quantitative estimates have relied on assumptions about densities and energy distributions of precipitating electrons, or on rare spacecraft measurements that ...
Stefan Duling, Joachim Saur, Darrell Strobel, Philippa Molyneux, Jamey R. Szalay, Thomas K. Greathouse   +5 more
wiley   +1 more source

Unveiling a Population of Strong Galaxy–Galaxy Lensed, Faint Dusty Star-forming Galaxies

The Astrophysical Journal Letters
The measurements of the number density of galaxy–galaxy strong lenses can be used to put statistical constraints on the foreground mass distributions. Dusty galaxies uncovered in submillimeter surveys are particularly useful in this regard because of the
Ting-Kai Yang, Chian-Chou Chen, Zhen-Kai Gao, Bovornpratch Vijarnwannaluk, Adarsh Ranjan, Wei-Hao Wang, Caitlin M. Casey, Tomotsugu Goto, Jeyhan S. Kartaltepe, Chayan Mondal, James Pearson, Chris Sedgwick, Stephen Serjeant   +12 more
doaj   +1 more source

GREAT: the SOFIA high-frequency heterodyne instrument

, 2012
We describe the design and construction of GREAT, the German REceiver for Astronomy at Terahertz frequencies operated on the Stratospheric Observatory for Infrared Astronomy (SOFIA).
Becklin, de Graauw, Guan, H. W. Hübers, Horn, J. Stutzki, Klein, Klein, P. Hartogh, Pilbratt, Pütz, R. Güsten, Röser, S. Heyminck, U. U. Graf, Villanueva, Wagner-Gentner, Young   +17 more
core   +1 more source

In Situ Detection of Opal‐A in Jezero Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract We report the in situ detection of amorphous hydrated silica in the Bills Bay abrasion patch, located in the eastern portion of the Margin Unit between the rim of Jezero crater and the western delta. Here, hydrated silica co‐occurs with olivine, Fe‐Mg carbonates, secondary Fe‐Mg silicates, and hydrated Mg‐sulfate as determined by UV Raman ...
Sergei V. Bykov, Kenneth H. Williford, Anushree Srivastava, Andrew Steele, Linda C. Kah, Travis A. Olds, Sunanda Sharma, Richard V. Morris, Kimberly Poppy Sinclair, Ryan S. Jakubek, Nikole C. Haney, Francis M. McCubbin, Mariek E. Schmidt, Ashley E. Murphy, Sandra Siljeström, Eva L. Scheller, William Abbey, Sanford A. Asher, Kevin P. Hand, Kyle Uckert, Jeffrey T. Osterhout, Carina Lee, Rohit Bhartia, Michelle E. Minitti, Joanna V. Clark, Patrick Casbeer, Shiv K. Sharma   +26 more
wiley   +1 more source

High resolution spectroscopy in the microwave and far infrared [PDF]

, 1990
High resolution rotational spectroscopy has long been central to remote sensing techniques in atmospheric sciences and astronomy. As such, laboratory measurements must supply the required data to make direct interpretation of data for instruments which ...
Pickett, Herbert M.
core   +1 more source

A strict lower-limit EBL: Applications on gamma-ray absorption

, 2008
A strict lower limit flux for the extragalactic background light from ultraviolet to the far-infrared photon energies is presented. The spectral energy distribution is derived using an established EBL model based on galaxy formation. The model parameters
Felix A. Aharonian, Frank Rieger, Herve Dole, Tanja M. Kneiske, Werner Hofmann   +4 more
core   +1 more source

Thermal Segregation and Reddening in Europa's Double Ridges

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Europa's double ridges often display lower albedo and redder color than their surroundings. Their unique topography may cause sublimation‐driven darkening due to illumination and self‐heating—the process of thermal segregation. We apply an advanced 3D thermophysical model, including shadowing and self‐heating through mutual exchange of ...
Kya C. Sorli, Paul O. Hayne, Lucas Lange, Sylvain Piqueux   +3 more
wiley   +1 more source

Monitoring the Dust Emission from R Aqr with SOFIA: Eclipse and Periastron Passage

The Astrophysical Journal
We present infrared (IR) spectra from our monitoring of the symbiotic Mira, R Aquarii, using the Stratospheric Observatory for Infrared Astronomy. New mid-IR photometric and spectroscopic observations using the FORCAST instrument were obtained in 2022 ...
Eric Omelian, Ravi Sankrit, Steven Goldman, Uma Gorti   +3 more
doaj   +1 more source