Results 71 to 80 of about 16,662 (218)
, 2011 We use results from long-time core-collapse supernovae simulations to investigate the impact of the late time evolution of the ejecta and of the nuclear physics input on the calculated r-process abundances. Based on the latest hydrodynamical simulations,
Arcones, A., Martinez-Pinedo, G.
core +1 more source
Evidence for the Large-Scale Dissociation of Molecular Gas in the Inner Spiral Arms of M81 [PDF]
, 1997 We compare the detailed distributions of HI, H alpha, and 150 nm far-UV continuum emission in the spiral arms of M81 at a resolution of 9" (linear resolution 150 pc at 3.7 Mpc distance).
Bloemen J. B. +13 more
core +3 more sources
The Astrophysical JournalMolecular clouds (MCs) are the birthplaces of new stars in galaxies. A key component of MCs are photodissociation regions (PDRs), where far-ultraviolet radiation plays a crucial role in determining the gas’s physical and chemical state.
Shmuel Bialy +11 more
doaj +1 more source
Effects of Barnett Magnetic Dipole–Dipole Interaction on Grain Growth and Destruction
The Astrophysical Journal, 2023 Rapidly spinning magnetic grains can acquire large magnetic dipole moments due to the Barnett effect. Here we study the new effect of Barnett magnetic dipole–dipole interaction on grain–grain collisions and grain growth, assuming that grains are spun up ...
Thiem Hoang, Bao Truong
doaj +1 more source
Life, 2022 The stable isotope composition of soluble and insoluble organic compounds in carbonaceous chondrites can be used to determine the provenance of organic molecules in space.
Heather V. Graham +4 more
doaj +1 more source
First 20 Years of Orbitrap Mass Spectrometry as the Mainstream Analytical Technique
Mass Spectrometry Reviews, EarlyView.ABSTRACT This review traces the first 20 years of Orbitrap mass spectrometry as a mainstream high‑resolution and accurate‑mass (HR/AM) technology. It outlines the historical development of the Orbitrap analyzer, the evolution of major instrument families, and the key technological innovations that enabled its widespread adoption. Particular emphasis is
Alexander Makarov
wiley +1 more source
The Sulfur Plume in the Horsehead Nebula: New Detections of S2H, SH+, and CO+
The Astrophysical Journal LettersSulfur is essential for life, but its abundance and distribution in the interstellar medium remain uncertain, with over 90% of sulfur undetected in cold molecular clouds.
A. Fuente +15 more
doaj +1 more source
Photodissociation Regions and Planetary Nebulae [PDF]
Symposium - International Astronomical Union, 1993 FUV photons (<13.6eV) from the central star create a region of warm (≈1000K) atomic and molecular gas around Planetary Nebulae (PN). This paper reviews theoretical and observational characteristics of such regions, commonly called photodissociation regions or PDRs.
openaire +1 more source
Recent Advances in Top‐Down Proteomics for Single‐Cell Research
Mass Spectrometry Reviews, EarlyView.ABSTRACT Individual cells have distinctive molecular characteristics, including biologically relevant proteoforms. Although single‐cell (SC) molecular omics offer unprecedented insights into cellular heterogeneity and function, the characterization of proteoforms in SCs remains an uncharted territory.
Jake A. Melby, Pei Su, Fabio P. Gomes
wiley +1 more source
Detection of steam in the circumstellar disk around a massive Young Stellar Object [PDF]
, 2005 We report on the observation of hot water vapor (steam) in the inner AU of a young massive star located in the star-forming region IRAS 08576-4334. The water lines are detected in a medium resolution (R=10,000) K-band spectrum taken by the infrared ...
Bik, A., Thi, W. -F.
core +2 more sources