Results 31 to 40 of about 20,687 (218)

An Improved Upper Limit of Cyanodiacetylene (HC5N) in the Atmosphere of Titan

The Astronomical Journal
In the complex Titan atmospheric chemistry, photochemical reactions involving cyanodiacetylene (HC _5 N) may be important as reaction pathways that could lead to the production of amines and aromatic molecules.
Takahiro Iino, Kotomi Taniguchi, Hideo Sagawa, Martin A. Cordiner, Shuya Tan, Shigeru Takahashi, Hikaru Kubota   +6 more
doaj   +1 more source

Integrated heterodyne array receivers for submillimeter astronomy [PDF]

SPIE Proceedings, 2003
The advent of large format (~100 pixel) spectroscopic imaging cameras at submillimeter wavelengths would fundamentally change the way in which astronomy is performed in this important wavelength regime. While the possibility of such instruments has been discussed for more than two decades, only recently have advances in mixer technology, device ...
Walker, C. K., Groppi, C. E., Drouet d'Aubigny, C., Kulesa, C., Hedden, A., Prober, D., Siddiqi, I., Kooi, J., Chen, G., Lichtenberger, A. W.   +9 more
openaire   +2 more sources

The effect of early diagenetic processes on the quantification of fossil micrometeorite abundance and flux in the geological record

Meteoritics &Planetary Science, Volume 61, Issue 4, Page 551-564, April 2026.
Abstract Fossil micrometeorites (MMs) recovered from lithified sedimentary rocks, particularly iron‐rich (I‐type) cosmic spherules (CSs) provide valuable insights into past dust‐forming events. Their abundances, when combined with estimates of local sedimentation rates can be used to reconstruct the flux of extraterrestrial dust.
Isabelle S. Mattia, Matthew J. Genge, Martin D. Suttle   +2 more
wiley   +1 more source

The Submillimeter Array

, 2004
The Submillimeter Array (SMA), a collaborative project of the Smithsonian Astrophysical Observatory (SAO) and the Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), has begun operation on Mauna Kea in Hawaii. A total of eight 6-m telescopes
Blundell R., James M. Moran, Kwok Yung Lo, Naylor D. A., Paul T. P. Ho, Tong C.   +5 more
core   +1 more source

The JCMT Gould Belt Survey: A First Look at the Auriga–California Molecular Cloud with SCUBA-2 [PDF]

, 2018
We present 850 and 450 μm observations of the dense regions within the Auriga–California molecular cloud using SCUBA-2 as part of the JCMT Gould Belt Legacy Survey to identify candidate protostellar objects, measure the masses of their circumstellar ...
A. Chrysostomou, A. Duarte-Cabral, Andrews S. M., Andrews S. M., B. C. Matthews, Berry D. S., Broekhoven-Fiene H., C. D. Wilson, C. J. Davis, C. Mowat, C. Quinn, C. Salji, Chen M. C.-Y., D. Bresnahan, D. Johnstone, D. Nutter, D. Robertson, D. Rumble, D. S. Berry, D. Ward-Thompson, E. Drabek-Maunder, E. Rosolowsky, Evans N. J.II, G. A. Fuller, G. J. White, G. Joncas, G. Moriarty-Schieven, Gutermuth R. A., H. Broekhoven-Fiene, H. Butner, H. Kirk, H. Thomas, Harvey P. M., Harvey P. M., J. Buckle, J. C. Mottram, J. Di Francesco, J. E. Pineda, J. Fiege, J. Greaves, J. Gregson, J. Hatchell, J. Lane, J. M. Kirk, J. Rawlings, J. Richer, J. Wouterloot, J. Yates, K. Marsh, K. Pattle, L. B. G. Knee, Lada C. J., Lane J., M. Chen, M. Fich, M. J. Currie, M. R. Hogerheijde, M. Zhu, Mann R. K., Mann R. K., Mann R. K., Mann R. K., Markwardt C. B. ed Bohlender D. A., Megeath S. T., Mohanty S., N. Tothill, P. Bastien, P. Friberg, P. Harvey, R. Friesen, Robitaille T., S. Coude, S. Graves, S. Mairs, S. Sadavoy, S. Tisi, S. Viti, Sadavoy S. I., Sadavoy S. I., T. Jenness, W. Holland, Ward-Thompson D., Wolk S. J., Young C. H.   +83 more
core   +7 more sources

First Principles Rovibronic Absorption Spectra of HF Molecule

Journal of Computational Chemistry, Volume 47, Issue 6, March 5, 2026.
Hydrogen fluoride (HF) is astrophysically important, as it has been detected in sunspots, Venus, red giants, and the interstellar medium, serving as a probe of exoplanet atmospheres. This article presents an ab initio investigation of HF rovibronic spectroscopy, combining high‐level electronic‐structure data with nuclear‐motion solutions and refinement
Nariman Abu El Kher, Maha Shibli, Mahmoud Korek, Sergei N. Yurchenko, Jonathan Tennyson, Nayla El‐Kork   +5 more
wiley   +1 more source

Chasing Tom Phillips [PDF]

, 2009
This paper gives an informal and personal view of the major impact that Tom Phillips has had on the author’s scientific career and field of ...
Zmuidzinas, Jonas
core  

Exploring the Interior Structure of (16) Psyche Through Basin‐Scale Collisions

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Asteroid (16) Psyche, the largest member of the M/X‐type asteroids, may be the leftover core of a differentiated planetesimal. As such (16) Psyche will be explored in detail by NASA's discovery‐class Psyche mission in 2029. This will be the first mission to orbit a metal‐rich asteroid, or any asteroid in the 100–500 km size range.
Namya Baijal, Erik Asphaug, C. Adeene Denton, Martin Jutzi, Sabina Raducan, Saverio Cambioni, Linda T. Elkins‐Tanton, Amanda Alexander   +7 more
wiley   +1 more source

Jets in Low-Mass Protostars

Universe
Jets and outflows are key components of low-mass star formation, regulating accretion and shaping the surrounding molecular clouds. These flows, traced by molecular species at (sub)millimeter wavelengths (e.g., CO, SiO, SO, H2CO, and CH3OH) and by atomic,
Somnath Dutta
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