2015ApJ...809...57R


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.23CEST13:39:29

2015ApJ...809...57R - Astrophys. J., 809, 57 (2015/August-8)

Effect of UV radiation on the spectral fingerprints of earth-like planets orbiting M stars.

RUGHEIMER S., KALTENEGGER L., SEGURA A., LINSKY J. and MOHANTY S.

Abstract (from CDS):

We model the atmospheres and spectra of Earth-like planets orbiting the entire grid of M dwarfs for active and inactive stellar models with Teff = 2300 K to Teff = 3800 K and for six observed MUSCLES M dwarfs with UV radiation data. We set the Earth-like planets at the 1 AU equivalent distance and show spectra from the visible to IR (0.4-20 µm) to compare detectability of features in different wavelength ranges with the James Webb Space Telescope and other future ground- and spaced-based missions to characterize exo-Earths. We focus on the effect of UV activity levels on detectable atmospheric features that indicate habitability on Earth, namely, H2O, O3, CH4, N2O, and CH3Cl. To observe signatures of life-O2/O3 in combination with reducing species like CH4-we find that early and active M dwarfs are the best targets of the M star grid for future telescopes. The O2 spectral feature at 0.76 µm is increasingly difficult to detect in reflected light of later M dwarfs owing to low stellar flux in that wavelength region. N2O, another biosignature detectable in the IR, builds up to observable concentrations in our planetary models around M dwarfs with low UV flux. CH3Cl could become detectable, depending on the depth of the overlapping N2O feature. We present a spectral database of Earth-like planets around cool stars for directly imaged planets as a framework for interpreting future light curves, direct imaging, and secondary eclipse measurements of the atmospheres of terrestrial planets in the habitable zone to design and assess future telescope capabilities.

Abstract Copyright: © 2015. The American Astronomical Society. All rights reserved.

Journal keyword(s): astrobiology - planets and satellites: atmospheres - planets and satellites: terrestrial planets - stars: low-mass

Simbad objects: 29

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Number of rows : 29

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 4C 29.05 Rad 02 01 36.019 +29 33 43.48     16.9     ~ 36 1
2 4C 27.07 Rad 02 17 01.88 +28 04 58.9           ~ 16 1
3 5C 6.237 QSO 02 20 48.0527300192 +32 41 06.452847228   19.0 19.40     ~ 28 1
4 7C 022118.10+273638.00 Sy1 02 24 12.2882485914 +27 50 11.569481672   19.502 18 18.263   ~ 203 1
5 3C 68.2 rG 02 34 23.80 +31 34 17.0   24       ~ 125 1
6 4C 28.06 Rad 02 35 35.40 +29 08 57.0           ~ 22 1
7 4C 28.07 QSO 02 37 52.40567732 +28 48 08.9900231     18.5 16.99   ~ 486 1
8 NGC 1167 LIN 03 01 42.358 +35 12 20.34   13.84 12.77     ~ 285 2
9 4C 30.04 Rad 03 11 35.18 +30 43 20.5           ~ 11 1
10 3C 92 Rad 03 40 08.5 +32 09 02           ~ 24 1
11 3CR 93.1 Sy2 03 48 46.9076031514 +33 53 15.460411800   20.723   19.110   ~ 124 1
12 4C 26.12 Rad 03 52 04.30 +26 24 17.6           ~ 21 1
13 3C 108 QSO 04 12 43.66686761 +23 05 05.4526057   19.60 18.70     ~ 84 1
14 4C 25.14 Q? 04 20 49.334 +25 26 27.54     18.0     ~ 17 1
15 4C 33.10 Rad 04 47 08.80 +33 27 46.0           ~ 13 1
16 3C 131 Rad 04 53 23.3 +31 29 24           ~ 64 1
17 3C 132 rG 04 56 42.922 +22 49 23.06   18.5       ~ 141 1
18 2MASS J04595608+2706020 Sy2 04 59 56.087 +27 06 02.14   18       ~ 27 2
19 ICRF J050258.4+251625 AGN 05 02 58.47478439 +25 16 25.2761557   20       ~ 155 1
20 NVSS J080157+282613 QSO 08 01 57.4742388520 +28 26 20.745711206   20.90 20.69     ~ 12 0
21 BD+20 2465 ** 10 19 36.2808024653 +19 52 12.014037746   10.82 9.52 9.19   M4Vae 1111 0
22 Ross 905 PM* 11 42 11.0933874353 +26 42 23.658083337   12.06 10.613 10.272 8.24 M3V 471 1
23 G 254-29 PM* 11 47 41.3885038708 +78 41 28.179367946   12.741   10.0   M4.0Ve 138 0
24 BD-07 4003 BY* 15 19 26.8271336166 -07 43 20.190958776 13.403 11.76 10.560 9.461 8.911 M3V 519 2
25 G 139-21 PM* 17 15 18.9337265994 +04 57 50.064695682   16.40   14.394   M4.5V 219 1
26 HD 156384C PM* 17 18 58.8271844065 -34 59 48.612934284 12.96 11.79 10.22 10.05 8.82 M1.5V 157 1
27 CD-44 11909 PM* 17 37 03.6657231894 -44 19 09.168952602 13.791 12.593 10.946 9.729 8.145 M3.5 91 0
28 HD 204961 PM* 21 33 33.9749932664 -49 00 32.403471949 11.359 10.176 8.672 7.665 6.479 M2/3V 197 1
29 BD-15 6290 BY* 22 53 16.7323107416 -14 15 49.303409936 12.928 11.749 10.192 9.013 7.462 M3.5V 829 1

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2019.10.23-13:39:29

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