Results 1 to 10 of about 101,495 (188)

Far-infrared polarimetry from the Stratospheric Observatory for Infrared Astronomy [PDF]

SPIE Proceedings, 2007
Multi-wavelength imaging polarimetry at far-infrared wavelengths has proven to be an excellent tool for studying the physical properties of dust, molecular clouds, and magnetic fields in the interstellar medium. Although these wavelengths are only observable from airborne or space-based platforms, no first-generation instrument for the Stratospheric ...
Vaillancourt, John E., Chuss, David T., Crutcher, Richard M., Dotson, Jessie L., Dowell, C. Darren, Harper, D. Al, Hildebrand, Roger H., Jones, Terry J., Lazarian, Alexandre, Novak, Giles, Werner, Michael W.   +10 more
openaire   +5 more sources

Mapping the Decline with Redshift of Dusty Star-forming Galaxies Using JWST and SCUBA-2

The Astrophysical Journal, 2023
We use JWST NIRCam observations of the massive lensing cluster field A2744 to develop a red galaxy selection of f _F444W > 1 μ Jy and f _F444W / f _F150W > 3.5 that picks out all nine >4.5 σ Atacama Large Millimeter/submillimeter Array 1.1 or 1.2 mm ...
A. J. Barger, L. L. Cowie
doaj   +1 more source

The Photodissociation and Ionization Fronts in M17-SW Localized with FIFI-LS on Board SOFIA

The Astrophysical Journal, 2023
To understand star formation rates, studying feedback mechanisms that regulate star formation is necessary. The radiation emitted by nascent massive stars play a significant role in feedback by photodissociating and ionizing their parental molecular ...
Randolf Klein, Alexander Reedy, Christian Fischer, Leslie W. Looney, Sebastian Colditz, Dario Fadda, Alexander G. G. M. Tielens, Willam D. Vacca   +7 more
doaj   +1 more source

Characterization and Absolute Calibration of the Far-infrared Field Integral Line Spectrometer for SOFIA

The Astronomical Journal, 2023
We present the characterization and definitive flux calibration of the Far-infrared Field Integral Line Spectrometer (FIFI-LS) instrument on board SOFIA.
Dario Fadda, Sebastian Colditz, Christian Fischer, William D. Vacca, Jason Chu, Melanie Clarke, Randolf Klein, Alfred Krabbe, Robert Minchin, Albrecht Poglitsch   +9 more
doaj   +1 more source

Detections of [C ii] 158 μm and [O iii] 88 μm in a Local Lyman Continuum Emitter, Mrk 54, and Its Implications to High-redshift ALMA Studies

The Astrophysical Journal, 2023
We present integral field, far-infrared (FIR) spectroscopy of Mrk 54, a local Lyman continuum emitter, obtained with FIFI-LS on the Stratospheric Observatory for Infrared Astronomy. This is only the second time, after Haro 11, that [C ii ] 158 μ m and [O
Ryota Ura, Takuya Hashimoto, Akio K. Inoue, Dario Fadda, Matthew Hayes, Johannes Puschnig, Erik Zackrisson, Yoichi Tamura, Hiroshi Matsuo, Ken Mawatari, Yoshinobu Fudamoto, Masato Hagimoto, Nario Kuno, Yuma Sugahara, Satoshi Yamanaka, Tom J. L. C. Bakx, Yurina Nakazato, Mitsutaka Usui, Hidenobu Yajima, Naoki Yoshida   +19 more
doaj   +1 more source

The Quest for the Missing Dust. II. Two Orders of Magnitude of Evolution in the Dust-to-gas Ratio Resolved within Local Group Galaxies

The Astrophysical Journal, 2023
We explore evolution in the dust-to-gas ratio with density within four well-resolved Local Group galaxies—the LMC, SMC, M31, and M33. We do this using new Herschel maps, which restore extended emission that was missed by previous Herschel reductions ...
Christopher J. R. Clark, Julia C. Roman-Duval, Karl D. Gordon, Caroline Bot, Matthew W. L. Smith, Lea M. Z. Hagen   +5 more
doaj   +1 more source

A Near-infrared-faint, Far-infrared-luminous Dusty Galaxy at z ∼ 5 in COSMOS-Web

The Astrophysical Journal, 2023
A growing number of far-infrared (FIR) bright sources completely invisible in deep extragalactic optical surveys hint at an elusive population of z > 4 dusty, star-forming galaxies.
Jed McKinney, Sinclaire M. Manning, Olivia R. Cooper, Arianna S. Long, Hollis Akins, Caitlin M. Casey, Andreas L. Faisst, Maximilien Franco, Christopher C. Hayward, Erini Lambrides, Georgios Magdis, Katherine E. Whitaker, Min Yun, Jaclyn B. Champagne, Nicole E. Drakos, Fabrizio Gentile, Steven Gillman, Ghassem Gozaliasl, Olivier Ilbert, Shuowen Jin, Anton M. Koekemoer, Vasily Kokorev, Daizhong Liu, R. Michael Rich, Brant E. Robertson, Francesco Valentino, John R. Weaver, Jorge A. Zavala, Natalie Allen, Jeyhan S. Kartaltepe, Henry Joy McCracken, Louise Paquereau, Jason Rhodes, Marko Shuntov, Sune Toft   +34 more
doaj   +1 more source

The PhotoDissociation Region Toolbox: Software and Models for Astrophysical Analysis

The Astronomical Journal, 2022
The PhotoDissociation Region Toolbox provides comprehensive, easy-to-use, public software tools and models that enable an understanding of the interaction of the light of young, luminous, massive stars with the gas and dust in the Milky Way and in other ...
Marc W. Pound, Mark G. Wolfire
doaj   +1 more source

Multimode horn antennas for far-infrared astronomy [PDF]

The 8th European Conference on Antennas and Propagation (EuCAP 2014), 2014
Multi-mode horns combined with bolometric or incoherent detectors are finding application in astronomical receivers for which partially coherent operation can provide increased throughput and thus sensitivity. This is advantageous when observing faint sources, especially if diffraction limited resolution is not required, or if the horn beam is ...
Murphy J. A., Bracken C., Doherty S., McAuley I., Wilson D., O'Sullivan C., Trappe N., Gradziel M., Ade P., Gleeson E., Maffei B., Lamarre J. -M., Noviello F., Peacocke T., Pisano G., Puget J. -L., Savini G., Sudiwala R., Withington S., Wylde R., Yurchenko V.   +20 more
openaire   +3 more sources

ISO continuum observations of quasars at z=1-4 I.Spectral energy distributions of quasars from the UV to far-infrared [PDF]

, 2000
Eight luminous quasars with $ -30 < M_B < -27$ at z = 1.4 - 3.7 have been observed in the mid- and far-infrared using ISO. All the quasars have been detected in the mid-infrared bands of ISOCAM, while no far-infrared detections have been made with ...
Andreani, Andreani, Bechtold, Benford, Bertin, Bloom, C. Gabriel, Carilli, Carilli, Casali, Cesarsky, Chini, Chini, Dunlop, E. Nishihara, Elvis, Green, Guilloteau, Guilloteau, H. Okuda, H. Shibai, Haas, Hamann, Herbstmeier, Hughes, Impey, Irwin, Isaak, Ivison, K. Kawara, Kawara, Kawara, Kessler, Kneib, Kobayashi, Kormann, Landolt, Lemke, Lichti, Magain, Matsuhara, McMahon, Neugebauer, Neugebauer, Ohta, Omont, Omont, Osmer, Pier, Puget, Richards, Rowan-Robinson, S. Oyabu, Sanders, Schneider, Starck, T. Hasegawa, Taniguchi, Y. Sato, Y. Sofue, Y. Taniguchi, Y. Tsuzuki, Yoshii   +62 more
core   +2 more sources