Results 51 to 60 of about 8,697 (227)

Dust Formation in Astrophysical Environments: The Importance of Kinetics

Frontiers in Astronomy and Space Sciences, 2022
Astronomical observations and analysis of stardust isolated from meteorites have revealed a highly diverse interstellar and circumstellar grain inventory, including a wide range of amorphous materials and crystalline compounds (silicates and carbon ...
A.G.G.M. Tielens, A.G.G.M. Tielens
doaj   +1 more source

PRESTALINE: a package for simulation and analysis of molecular spectra of star forming regions

Open Astronomy, 2021
We present the PRESTALINE package, a novel tool to simulate and analyse spectra of star forming objects. PRESTALINE allows for a direct comparison of theoretical models with observations and simplifies an analysis of observed spectra.
Van Looveren Gwenaël, Kochina Olga, Wiebe Dmitry   +2 more
doaj   +1 more source

Astrochemistry With the Orbiting Astronomical Satellite for Investigating Stellar Systems

Frontiers in Astronomy and Space Sciences, 2022
Chemistry along the star- and planet-formation sequence regulates how prebiotic building blocks—carriers of the elements CHNOPS—are incorporated into nascent planetesimals and planets.
Jennifer B. Bergner, Yancy L. Shirley, Jes K. Jørgensen, Brett McGuire, Brett McGuire, Susanne Aalto, Carrie M. Anderson, Gordon Chin, Maryvonne Gerin, Paul Hartogh, Daewook Kim, Daewook Kim, David Leisawitz, Joan Najita, Kamber R. Schwarz, Alexander G. G. M. Tielens, Alexander G. G. M. Tielens, Christopher K. Walker, David J. Wilner, Edward J. Wollack   +19 more
doaj   +1 more source

Search of amino group in the Universe: 2-aminopyridine [PDF]

Serbian Astronomical Journal, 2015
In search for life in the Universe, scientists are interested in identification of molecules having amino (-NH2) group in the interstellar space. The aminoacetonitrile (NH2CH2CN), which is precursor of the simplest amino acid glycine (NH2CH2COOH)
Sharma M.K., Sharma M., Sharma A.K., Chandra S.   +3 more
doaj   +1 more source

The Role of Terahertz and Far-IR Spectroscopy in Understanding the Formation and Evolution of Interstellar Prebiotic Molecules

Frontiers in Astronomy and Space Sciences, 2021
Stellar systems are often formed through the collapse of dense molecular clouds which, in turn, return copious amounts of atomic and molecular material to the interstellar medium.
Duncan V. Mifsud, Duncan V. Mifsud, Perry A. Hailey, Alejandra Traspas Muiña, Olivier Auriacombe, Nigel J. Mason, Sergio Ioppolo   +6 more
doaj   +1 more source

Quantum chemical calculations of lupeol (C30H50O) isolated from the ethyl acetate leaf extracts of Justicia Secunda

Journal of Nigerian Society of Physical Sciences
The discovery of lupeol, a triterpenoid compound (C30H50O), in the ethyl acetate leaf extract of Justicia secunda (Blood root), has opened doors to extensive research and development opportunities in natural product-based pharmaceuticals.
B. Bako, E. E. Etim, J. P. Shinggu, S. S. Humphrey, L. J. Moses, M. E. Khan   +5 more
doaj   +1 more source

ASTROCHEMISTRY OF STAR FORMATION

Odessa Astronomical Publications, 2013
Star formation is one of the key pro­cesses governing the evolution of the Universe. It is ac­companied by significant transformations in the chem­ical composition and the physical state of the inter­stellar medium. Combining observations in infrared and
D. S. Wiebe, O. V. Kochina
doaj   +1 more source

Enlightening the Chemistry of Infalling Envelopes and Accretion Disks Around Sun-Like Protostars: The ALMA FAUST Project

Frontiers in Astronomy and Space Sciences, 2021
The huge variety of planetary systems discovered in recent decades likely depends on the early history of their formation. In this contribution, we introduce the FAUST Large Program which focuses specifically on the early history of solar-like protostars
C. Codella, C. Codella, C. Ceccarelli, C. Chandler, N. Sakai, S. Yamamoto, The FAUST Team   +6 more
doaj   +1 more source

The Influence of Galactic Cosmic Rays on Ion-Neutral Hydrocarbon Chemistry in the Upper Atmospheres of Free-Floating Exoplanets [PDF]

, 1989
Cosmic rays may be linked to the formation of volatiles necessary for prebiotic chemistry. We explore the effect of cosmic rays in a hydrogen-dominated atmosphere, as a proof-of-concept that ion-neutral chemistry may be important for modelling hydrogen ...
C. Bilger, Ch. Helling, Miller, P. B. Rimmer, Rimmer, Skilling   +5 more
core   +3 more sources

Astrochemistry

Plasma Sources Science and Technology, 2015
In the last 40 years a wide range of molecules, including neutrals, cations and anions, containing up to 13 atoms—in addition to detections of C60 and C70 — have been found in the harsh environment of the interstellar medium. The exquisite sensitivity and very high spectral and, more recently, spatial resolution, of modern telescopes has enabled the ...
openaire   +3 more sources