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J/ApJ/787/L29    Habitable zones around main-sequence stars   (Kopparapu+, 2014)

Habitable zones around main-sequence stars: dependence on planetary mass. Kopparapu R.K., Ramirez R.M., Schottelkotte J., Kasting J.F., Domagal-Goldman S., Eymet V. <Astrophys. J., 787, L29 (2014)> =2014ApJ...787L..29K (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Models, evolutionary Keywords: planets and satellites: atmospheres Abstract: The ongoing discoveries of extra-solar planets are unveiling a wide range of terrestrial mass (size) planets around their host stars. In this Letter, we present estimates of habitable zones (HZs) around stars with stellar effective temperatures in the range 2600 K-7200 K, for planetary masses between 0.1 M{earth} and 5 M{earth}. Assuming H2O-(inner HZ) and CO2-(outer HZ) dominated atmospheres, and scaling the background N2 atmospheric pressure with the radius of the planet, our results indicate that larger planets have wider HZs than do smaller ones. Specifically, with the assumption that smaller planets will have less dense atmospheres, the inner edge of the HZ (runaway greenhouse limit) moves outward (∼10% lower than Earth flux) for low mass planets due to larger greenhouse effect arising from the increased H2O column depth. For larger planets, the H2O column depth is smaller, and higher temperatures are needed before water vapor completely dominates the outgoing longwave radiation. Hence the inner edge moves inward (∼7% higher than Earth's flux). The outer HZ changes little due to the competing effects of the greenhouse effect and an increase in albedo. New, three-dimensional climate model results from other groups are also summarized, and we argue that further, independent studies are needed to verify their predictions. Combined with our previous work, the results presented here provide refined estimates of HZs around main-sequence stars and provide a step toward a more comprehensive analysis of HZs. Description: Language: Fortran 90 Code tested under the following compilers/operating systems: ifort/CentOS linux Description of input data: No input necessary. Description of output data: Output files: HZs.dat, HZ_coefficients.dat System requirements: No major system requirement. Fortran compiler necessary. Calls to external routines: None. Additional comments: None File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file HZs.f90 89 124 FORTRAN program
See also: J/A+A/567/A133 : Habitable zone code (Valle+, 2014) J/ApJ/770/90 : Candidate planets in the habitable zones (Gaidos, 2013) History: From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 03-Aug-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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