Results 61 to 70 of about 25,802 (223)
Disentangling the Origin and Heating Mechanism of Supernova Dust: Late-Time Spitzer Spectroscopy of the Type IIn SN 2005ip [PDF]
, 2010 This paper presents late-time near-infrared and {\it Spitzer} mid-infrared photometric and spectroscopic observations of warm dust in the Type IIn SN 2005ip in NGC 2906.
Chevalier, Roger A. +5 more
core +3 more sources
Isomerism of CH2SO: Accurate structural, energetic, and spectroscopic characterization
Journal of Computational Chemistry, Volume 45, Issue 11, Page 777-786, April 30, 2024.What is the next sulfur‐containing molecule that will be detected in space? Guided by the experimental data on the cis‐/trans‐HC(O)SH conformers, the structural and spectroscopic properties of cis‐/trans‐HC(S)OH have been accurately determined using state‐of‐the‐art quantum‐chemical approaches. Abstract A recent work [Ye et al. Mon. Not. R. Astron. Soc.
Cristina Puzzarini +2 more
wiley +1 more source
Equatorial Enhancement in the Dustiest OH/IR Stars in the Galactic Bulge
The Astrophysical JournalWe have detected the 10 μ m silicate feature and the 11.3 μ m crystalline forsterite feature in absorption in 21 oxygen-rich asymptotic giant branch stars in the Galactic bulge.
Steven R. Goldman +4 more
doaj +1 more source
Chiroptical properties of membrane glycerophospholipids and their chiral backbones
Chirality, Volume 36, Issue 3, March 2024.Examination of the interaction of glycerophospholipids with circularly polarized light suggests that direct induction of symmetry breaking to membrane lipids by chiral photons is unlikely. However, anisotropy spectra of certain analogs indicate potential alternative mechanisms for the origins of membrane lipid homochirality, providing insights into the
Jana Bocková +4 more
wiley +1 more source
Dust-evacuated Zones near Massive Stars: Consequences of Dust Dynamics on Star-forming Regions
The Astrophysical JournalStars form within dense cores composed of both gas and dust within molecular clouds. However, despite the crucial role that dust plays in the star formation process, its dynamics is frequently overlooked, with the common assumption being a constant ...
Nadine H. Soliman +2 more
doaj +1 more source
THE SPECTROSCOPY OF THE PULSATING CARBON STAR R Lep
Odessa Astronomical Publications, 2017 The first results of detailed spectroscopy are presented for carbon Mira R Leporis. This long-period variable is undergoing deep fadings, apparently caused by dust formation around the star.
L. Zacs, O. Alksnis
doaj +1 more source
The presence of dust in the general interstellar medium is inferred from the extinction, polarization, and scattering of starlight; the presence of dark nebulae; interstellar depletions; the observed infrared emission around certain stars and various ...
Dwek, E.
core +1 more source
, 2005 We present extended Spectral Energy Distributions (SEDs) of seven classical RV Tauri stars, using newly obtained submillimetre continuum measurements and Geneva optical photometry supplemented with literature data.
Alcock +38 more
core +1 more source
The structure of circumstellar shells [PDF]
This document provides a report on research activities carried out with the support of NASA grant NAG 5-1174, the Structure of Circumstellar Shells, funded under the Astrophysics Data Program.
Fix, John D.
core +1 more source
Signatures of exosolar planets in dust debris disks
, 2000 We apply our recently elaborated, powerful numerical approach to the high-resolution modeling of the structure and emission of circumstellar dust disks, incorporating all relevant physical processes.
Gorkavyi, Nick N. +3 more
core +1 more source