Is life most likely around Sun-like stars?

被引：29

作者：

Lingam, Manasvi ^{[1
]}

Loeb, Abraham ^{[1
]}

机构：

[1] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2018年 / 05期

关键词：

solar physics; stars; PREBIOTIC SYNTHESIS; ATMOSPHERIC OXYGEN; HABITABLE ZONES; PLANETS; ORIGINS; EVOLUTION; RADIATION; SELECTION; ESCAPE; COMMON;

D O I：

10.1088/1475-7516/2018/05/020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the habitability of Earth-analogs around stars of different masses, which is regulated by the stellar lifetime, stellar wind-induced atmospheric erosion, and biologically active ultraviolet (UV) irradiance. By estimating the timescales associated with each of these processes, we show that they collectively impose limits on the habitability of Earth-analogs. We conclude that planets orbiting most M-dwarfs are riot likely to host life, and that the highest probability of complex biospheres is for planets around K- and C-type stars. Our analysis suggests that the current existence of life near the Sun is slightly unusual, but not significantly anomalous.

引用

页数：12

共 50 条

[1] Debris around sun-like stars
Greaves, JS
SEARCH FOR OTHER WORLDS, 2004, 713 : 111 - 114
[2] Debris disks around Sun-like stars
Trilling, D. E.
Bryden, G.
Beichman, C. A.
Rieke, G. H.
Su, K. Y. L.
Stansberry, J. A.
Blaylock, M.
Stapelfeldt, K. R.
Beeman, J. W.
Haller, E. E.
ASTROPHYSICAL JOURNAL, 2008, 674 (02): : 1086 - 1105
[3] Transience of hot dust around Sun-like stars
Wyatt, M. C.
Smith, R.
Greaves, J. S.
Beichman, C. A.
Bryden, G.
Lisse, C. M.
ASTROPHYSICAL JOURNAL, 2007, 658 (01): : 569 - 583
[4] COMPANIONS OF SUN-LIKE STARS
ABT, HA
SCIENTIFIC AMERICAN, 1977, 236 (04) : 96 - 104
[5] Asteroseismology of Sun-like stars
Elsworth, YP
Thompson, MJ
ASTRONOMY & GEOPHYSICS, 2004, 45 (05) : 14 - 19
[6] The place of the Sun among the Sun-like stars
Shapiro, A.I. (alexander.shapiro@pmodwrc.ch), 1600, EDP Sciences (552):
[7] Patterns of Variation for the Sun and Sun-like Stars
Radick, Richard R.
Lockwood, G. Wesley
Henry, Gregory W.
Hall, Jeffrey C.
Pevtsov, Alexei A.
ASTROPHYSICAL JOURNAL, 2018, 855 (02):
[8] The place of the Sun among the Sun-like stars
Shapiro, A. I.
Schmutz, W.
Cessateur, G.
Rozanov, E.
ASTRONOMY & ASTROPHYSICS, 2013, 552
[9] Decadal Variations of Sun-Like Stars
Lockwood, G. Wesley
Henry, Gregory W.
Hal, Jeffrey C.
Radick, Richard R.
NEW QUESTS IN STELLAR ASTROPHYSICS III: A PANCHROMATIC VIEW OF SOLAR-LIKE STARS, WITH AND WITHOUT PLANETS, 2013, 472 : 203 - +
[10] Spot sizes on Sun-like stars
Solanki, SK
Unruh, YC
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 348 (01) : 307 - 315

← 1 2 3 4 5 →