Results 1 to 10 of about 218,608 (214)
Fitting procedure for estimating interstellar extinction at high galactic latitudes
Open Astronomy, 2021 We determine the interstellar extinction in the selected high-latitude areas of the sky based on Gaia EDR3 astrometry and photometry and spectroscopic data from RAVE survey.
Oleg Malkov, Dana Kovaleva
exaly +2 more sources
When Communication Enables Catastrophe: Nuclear Risk and the Short Lifetimes of Technological Civilizations: A Bayesian Scenario Analysis of Civilizational Survival and the Fermi Paradox. [PDF]
Risk AnalABSTRACT The Fermi paradox may partly reflect technological self‐destruction acting as a Great Filter during post‐industrial development. Because the empirical record consists of a single civilization observed over an eighty‐year nuclear age, the exercise reported here is best understood as a structured, historically anchored scenario analysis rather ...
Alfano V.
europepmc +2 more sources
Dust Plasma Analogue for Interstellar 217.5 nm Extinction [PDF]
Serbian Astronomical Journal, 2008 The new ultraviolet (UV) extinction measurements of carbonaceous nanoparticles in the range from 140 nm to 260 nm are presented. The plasma polymerized hydrocarbon nanoparticles were already proposed as a new astro analogue, which describe the infrared (
Stefanović, I.
doaj +5 more sources
What Is Space Bioethics? [PDF]
BioethicsABSTRACT Classical bioethics examines moral issues in terrestrial medicine and the life sciences. According to Konrad Szocik, space bioethics merely relocates those questions to harsher environments. We argue that this view is incomplete: space bioethics is a genuinely original domain.
Balistreri M.
europepmc +2 more sources
LAMOST Spectroscopy and Gaia Photo-Astrometry for an Interstellar Extinction Study
GalaxiesThe aim of this work is to establish the present accuracy and convergence of available estimates of galactic extinction. We determine the galactic interstellar extinction in selected high-latitude areas of the sky based on Gaia DR3 astrometry and ...
Oleg Malkov +2 more
exaly +3 more sources
SpeX Near-infrared Spectroscopic Extinction Curves in the Milky Way
The Astrophysical Journal, 2022 Interstellar dust extinction curves provide valuable information about dust properties, including the composition and size of the dust grains, and are essential to correct observations for the effects of interstellar dust.
Marjorie Decleir +9 more
doaj +1 more source
The Astrophysical Journal, 2023 Interstellar-dust extinction law is essential for interpreting observations. In this work, we investigate the ultraviolet (UV)–mid-infrared (IR) extinction law of the Taurus molecular cloud and its possible variations. We select 504,988 dwarf stars (4200
Ling Li +3 more
doaj +1 more source
The Astrophysical Journal, 2023 Dust extinction is one of the fundamental measurements of dust grain sizes, compositions, and shapes. Most of the wavelength-dependent variations seen in Milky Way extinction are strongly correlated with the single parameter R ( V ) = A ( V )/ E ( B − V )
Karl D. Gordon +6 more
doaj +1 more source
The Astrophysical Journal Supplement Series, 2022 We have obtained accurate dust reddening from the far-ultraviolet to the mid-infrared for up to 5 million stars by the star-pair algorithm based on LAMOST stellar parameters along with Galaxy Evolution Explorer, Pan-STARRS 1, Gaia, Sloan Digital Sky ...
Ruoyi Zhang, Haibo Yuan
doaj +1 more source
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011 We present a model for interstellar extinction dust, in which we assume a bimodal distribution of extinction carriers, a dispersion of core-mantle grains, supplemented by a collection of PAHs in free molecular form.
C. Cecchi-Pestellini +7 more
doaj +1 more source