Results 31 to 40 of about 520,436 (213)
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
Polarization‐Selective Metamaterial Absorber for Long‐ to Very Long‐Wavelength Infrared Broadband [PDF]
NanophotonicsBroadband and polarization‐selective metamaterial absorbers for long‐ to very long‐wavelength infrared light with high extinction ratios are designed and demonstrated, which provide a new method for broadband polarization‐selective absorbers. ABSTRACT Metamaterial absorbers have received extensive research interest and sustained attention due to their ...
Wu Z +10 more
europepmc +2 more sources
A PRECISE DETERMINATION OF THE MID-INFRARED INTERSTELLAR EXTINCTION LAW BASED ON THE APOGEE SPECTROSCOPIC SURVEY [PDF]
, 2016 A precise measure of the mid-infrared interstellar extinction law is crucial for investigating the properties of interstellar dust, especially larger-sized grains.
M. Xue +5 more
semanticscholar +1 more source
3D interstellar extinction map within the nearest kiloparsec [PDF]
, 2016 The product of the previously constructed 3D maps of stellar reddening (Gontcharov 2010) and Rv variations (Gontcharov 2012) has allowed us to produce a 3D interstellar extinction map within the nearest kiloparsec from the Sun with a spatial resolution ...
G. Gontcharov
semanticscholar +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
VUV spectroscopy of carbon dust analogs: contribution to interstellar extinction [PDF]
, 2016 A full spectral characterization of carbonaceous dust analogs is necessary to understand their potential as carriers of observed astronomical spectral signatures such as the ubiquitous UV bump at 217.5 nm and the far-ultraviolet (FUV) rise common to ...
L. Gavilan +5 more
semanticscholar +1 more source
X-ray extinction from interstellar dust [PDF]
Astronomy & Astrophysics, 2019 Aims. We present a study on the prospects of observing carbon, sulfur, and other lower abundance elements (namely Al, Ca, Ti, and Ni) present in the interstellar medium using future X-ray instruments.
E. Costantini +5 more
semanticscholar +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
An R V Map of the Milky Way Revealed by LAMOST
The Astrophysical Journal Supplement Series, 2023 The total-to-selective extinction ratio, R _V , is a key parameter for tracing the properties of interstellar dust, as it directly determines the variation of the extinction curve with wavelength.
Ruoyi Zhang, Haibo Yuan, Bingqiu Chen
doaj +1 more source
Variations of the interstellar extinction law within the nearest kiloparsec [PDF]
, 2016 Multicolor photometry from the Tycho-2 and 2MASS catalogues for 11 990 OB and 30 671 K-type red giant branch stars is used to detect systematic large-scale variations of the interstellar extinction law within the nearest kiloparsec. The characteristic of
G. Gontcharov
semanticscholar +1 more source