2017MNRAS.470L..82L

Query : 2017MNRAS.470L..82L

2017MNRAS.470L..82L - Mon. Not. R. Astron. Soc., 470, L82-L86 (2017/September-1)

Natural and artificial spectral edges in exoplanets.

LINGAM M. and LOEB A.

Abstract (from CDS):

Technological civilizations may rely upon large-scale photovoltaic arrays to harness energy from their host star. Photovoltaic materials, such as silicon, possess distinctive spectral features, including an 'artificial edge' that is characteristically shifted in wavelength shortwards of the 'red edge' of vegetation. Future observations of reflected light from exoplanets would be able to detect both natural and artificial edges photometrically, if a significant fraction of the planet's surface is covered by vegetation or photovoltaic arrays, respectively. The stellar energy thus tapped can be utilized for terraforming activities by transferring heat and light from the day side to the night side on tidally locked exoplanets, thereby producing detectable artefacts.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): extraterrestrial intelligence - astrobiology - techniques: photometric - planets and satellites: general - planets and satellites: general

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Proxima Centauri b Pl 14 29 42.9461331854 -62 40 46.164680672           ~ 445 0

Query : 2017MNRAS.470L..82L

Basic data :
NAME Proxima Centauri b -- Extra-solar Planet
Other object types: otypes_help 		Pl (), Pl? (2016Natur)
ICRS coord. (ep=J2000) : 		14 29 42.9461331854 -62 40 46.164680672 (Optical) [ 0.0240 0.0344 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 26 19.0268340676 -62 28 04.407284503 [ 0.0240 0.0344 90 ]
Gal coord. (ep=J2000) : 		313.9398620493784 -01.9271491330428 [ 0.0240 0.0344 90 ]
Proper motions mas/yr : 		-3781.741 769.465 [0.031 0.051 90] A 2020yCat.1350....0G
Parallaxes (mas): 		768.0665 [0.0499] A 2020yCat.1350....0G
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Hierarchy : number of linked objects
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NAME Proxima b NAME Proxima Centauri b NAME Proxima Cen b

References (445 between 1850 and 2026) (Total 445)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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