Results 71 to 80 of about 520,436 (213)
The Astrophysical Journal, 2023 The 3D extinction and structure are studied for the Taurus, Orion, Perseus, and California molecular clouds based on the LAMOST spectroscopy. Stellar color excess is calculated with the intrinsic color index derived from the atmospheric parameters in the
ZheTai Cao +3 more
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DIFFUSE INTERSTELLAR BANDS AND THE ULTRAVIOLET EXTINCTION CURVES: THE MISSING LINK REVISITED [PDF]
, 2016 A large number of interstellar absorption features at ∼4000 Å–1.8 μm, known as the “diffuse interstellar bands” (DIBs), remains unidentified. Most recent works relate them to large polycyclic aromatic hydrocarbon (PAH) molecules or ultrasmall ...
Fu-Yuan Xiang, Ai-Gen Li, Jian-Xin Zhong
semanticscholar +1 more source
Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1965-1993, August 2026.Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das +7 more
wiley +1 more source
Properties of interstellar dust responsible for extinction laws with unusually low total-to-selective extinction ratios of Rv=1-2 [PDF]
, 2016 It is well known that the extinction properties along lines of sight to Type Ia supernovae (SNe Ia) are described by steep extinction curves with unusually low total-to-selective extinction ratios of R V = 1.0 − 2.0 . In order to reveal the properties of
T. Nozawa
semanticscholar +1 more source
The Astrophysical JournalThe 2175 Å extinction bump, the most prominent spectral feature superimposed on the interstellar extinction curve, is widely seen in the interstellar medium of the Milky Way and external galaxies, both near and far.
Qian Wang, Aigen Li, X. J. Yang
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Advanced Functional Materials, Volume 36, Issue 61, 30 July 2026.Enhancing crystallinity through thermal annealing leads to amplifying the chiroptical activity of TiO2 nanohelices (NHs) fabricated by glancing angle deposition, ascribed to the suppression of charge trapping. The enhanced chiroptical activity can be converted into pronounced dissymmetric photocatalytic kinetics of circularly polarized photocatalysis ...
Ying Wang +3 more
wiley +1 more source
The Astrophysical JournalAccurate interpretation of observations relies on the interstellar dust extinction law, which also serves as a powerful diagnostic for probing dust properties.
Juan Deng +3 more
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Probing interstellar extinction near the 30 Doradus nebula with red giant stars [PDF]
, 2013 We have studied the interstellar extinction in a field of 3' x 3' located about 6' SW of 30 Doradus in the Large Magellanic Cloud (LMC). Hubble Space Telescope observations in the U, B, V, I and Halpha bands reveal patchy extinction in this field.
G. de Marchi, N. Panagia, L. Girardi
semanticscholar +1 more source
Extinction Distributions in Nearby Star-resolved Galaxies. II. M33
The Astronomical JournalExtinction maps are essential for tracing interstellar dust and enabling accurate stellar population studies in galaxies. Here, a high-resolution extinction distribution of the nearby Triangulum galaxy (M33), is constructed by fitting multiband color ...
Yuxi Wang +4 more
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Extinction curves, extinction laws, and the failure of interstellar dust models
Astronomy & AstrophysicsThe interpretation of ultraviolet Galactic interstellar extinction curves is obscured today by accumulated assumptions, such as a purported link between the 2200 Å bump and metallicity, that are not firmly supported by observations.
Zagury Frédéric
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