Molecules from evolved stars and their role in the cycle of the ISM
EPJ Web of Conferences, 2022 The ejecta of evolved stars are among the most efficient chemical laboratories in the Universe. Many of the chemical compounds synthesized in these environments probably travel along the interstellar medium and may be ultimately delivered to planets. However, we still do not understand many of the chemical processes at work during the evolution from ...
M. Agúndez
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Molecules in Action: Extragalactic ISM at high resolution [PDF]
Proceedings of the International Astronomical Union, 2015 AbstractDuring the last two decade, observations have shown the potential of molecular tracers to get insights into the physical processes taking place in the central regions of active galaxies. However, observations were severely limited by both sensitivity and resolution.
S. Martín
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HyGAL: Characterizing the Galactic Interstellar Medium with Observations of Hydrides and Other Small Molecules. I. Survey Description and a First Look Toward W3(OH), W3 IRS5, and NGC 7538 IRS1 [PDF]
The Astrophysical Journal, 2022 Abstract The HyGAL Stratospheric Observatory for Infrared Astronomy legacy program surveys six hydride molecules—ArH+, OH+, H2O+, SH, OH, and CH—and two atomic constituents—C+ and O—within the diffuse interstellar medium (ISM) by means of absorption-line spectroscopy toward 25 bright Galactic background continuum sources.
A. M. Jacob +25 more
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Localization of single molecules with structured illumination and structured detection. [PDF]
Light Sci ApplA new high-precision single-molecule localization scheme, ISM-FLUX, is an implementation of MINFLUX using image-scanning microscopy (ISM) with a single-photon avalanche diode (SPAD) array detector.
Masullo LA.
europepmc +2 more sources
Molecules in Comets: An ISM-Solar System Connection? [PDF]
Symposium - International Astronomical Union, 2000 Our knowledge of the volatile composition of comets has advanced considerably since the last IAU Astrochemistry Symposium, in large part due to the apparition of comet Hale-Bopp and its study with both new ground-based instruments and from spacecraft. Some 23 or 24 coma molecules are now known which are probably, at least in part, volatile constituents
Irvine, William M., Bergin, EA
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Analyzing observations of molecules in the ISM: Theoretical and experimental studies of energy transfer [PDF]
EAS Publications Series, 2012 Our laboratories have recently calculated a set of collision coefficients characterizing the efficiency of energy transfer between helium and/or hydrogen and a large variety of interstellar molecules. We have considered with molecules ranging from light hydrides, observed by the Herschel Space Observatory, to medium size molecules, observed by mm ...
Wiesenfeld, L. +6 more
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Laboratory studies of formation of molecules on dust grain analogues under ISM conditions [PDF]
Journal of Geophysical Research: Planets, 2004 Certain important molecules of the interstellar medium (ISM), such as H2 and CO2, are believed to have been formed on surfaces of dust grains. We describe experimental methods that we used to study the formation of H2 and CO2 on dust grain analogues in conditions approximating the ones found in key interstellar environments.
Vidali G +3 more
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Formation of Complex Organic Molecules on Interstellar CO Ices? Insights from Computational Chemistry Simulations [PDF]
Astrophysical Journal, 2023 The carbon (3P) atom is a reactive species that, according to laboratory experiments and theoretical calculations, condensates with interstellar ice components.
S. Ferrero +4 more
semanticscholar +1 more source
Precursors of fatty alcohols in the ISM: Discovery of n-propanol [PDF]
Astronomy & Astrophysics, 2022 Theories on the origins of life propose that early cell membranes were synthesized from amphiphilic molecules simpler than phospholipids such as fatty alcohols.
I. Jímenez-Serra +64 more
semanticscholar +1 more source
Oxygen-bearing organic molecules in comet 67P's dusty coma: First evidence for abundant heterocycles [PDF]
Astronomy & Astrophysics, 2023 The puzzling complexity of terrestrial biomolecules is driving the search for complex organic molecules in the Interstellar Medium (ISM) and serves as a motivation for many in situ studies of reservoirs of extraterrestrial organics from meteorites and ...
N. Hanni +8 more
semanticscholar +1 more source