2014MNRAS.441.1545T


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.16CEST09:32:53

2014MNRAS.441.1545T - Mon. Not. R. Astron. Soc., 441, 1545-1569 (2014/June-3)

Bayesian search for low-mass planets around nearby M dwarfs - estimates for occurrence rate based on global detectability statistics.

TUOMI M., JONES H.R.A., BARNES J.R., ANGLADA-ESCUDE G. and JENKINS J.S.

Abstract (from CDS):

Due to their higher planet-star mass ratios, M dwarfs are the easiest targets for detection of low-mass planets orbiting nearby stars using Doppler spectroscopy. Furthermore, because of their low masses and luminosities, Doppler measurements enable the detection of low-mass planets in their habitable zones that correspond to closer orbits than for solar-type stars. We re-analyse literature Ultraviolet and Visual Echelle Spectrograph (UVES) radial velocities of 41 nearby M dwarfs in a combination with new velocities obtained from publicly available spectra from the HARPS-ESO spectrograph of these stars in an attempt to constrain any low-amplitude Keplerian signals. We apply Bayesian signal detection criteria, together with posterior sampling techniques, in combination with noise models that take into account correlations in the data and obtain estimates for the number of planet candidates in the sample. More generally, we use the estimated detection probability function to calculate the occurrence rate of low-mass planets around nearby M dwarfs. We report eight new planet candidates in the sample (orbiting GJ 27.1, GJ 160.2, GJ 180, GJ 229, GJ 422, and GJ 682), including two new multiplanet systems, and confirm two previously known candidates in the GJ 433 system based on detections of Keplerian signals in the combined UVES and High Accuracy Radial velocity Planet Searcher (HARPS) radial velocity data that cannot be explained by periodic and/or quasi-periodic phenomena related to stellar activities. Finally, we use the estimated detection probability function to calculate the occurrence rate of low-mass planets around nearby M dwarfs. According to our results, M dwarfs are hosts to an abundance of low-mass planets and the occurrence rate of planets less massive than 10 M{oplus is of the order of one planet per star, possibly even greater. Our results also indicate that planets with masses between 3 and 10 M{oplus are common in the stellar habitable zones of M dwarfs with an estimated occurrence rate of 0.21^+0.03_-0.05 planets per star.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): methods: numerical - methods: statistical - techniques: radial velocities - planets and satellites: detection - stars: individual: GJ 27.1 - stars: individual: GJ 160.2

Simbad objects: 60

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Number of rows : 60

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 225213 Er* 00 05 24.4278018131 -37 21 26.504223709 11.074 10.022 8.562 7.589 6.432 M2V 189 0
2 CD-48 33 ** 00 16 01.9695362840 -48 15 39.133736813 14.217 13.055 11.546 10.506 9.24 M5V 31 0
3 EGM 95 PM* 00 21 56.0447626099 -31 24 21.812262092 13.82 12.635 11.130 10.121 8.919 M1.5 46 0
4 CD-44 170 PM* 00 39 58.8243310853 -44 15 11.582410229 14.079 12.888 11.401 10.433 9.371 M4V 68 0
5 CD-44 170b Pl 00 39 58.8243310853 -44 15 11.582410229           ~ 2 0
6 V* YZ Cet Er* 01 12 30.6367741360 -16 59 56.361313690 15.315 13.885 12.074 10.696 8.938 M4.0Ve 212 0
7 CD-54 269 PM* 01 14 34.1967262619 -53 56 31.610630498 13.791 12.591 11.077 10.094 8.985 M3V 37 0
8 CD-22 526 PM* 01 32 26.2022533245 -21 54 18.440892832 13.856 12.668 11.155 10.179 9.091 M1.5Vk: 48 0
9 L 440-30 PM* 02 19 10.0761848753 -36 46 41.180073174 14.361 13.149 11.595 10.527 9.211 M2.5+V 46 1
10 L 127-97 PM* 02 52 22.1697005631 -63 40 47.320543350 14.165 12.967 11.382 10.318 8.992 M2.5 51 0
11 LP 533-57 PM* 03 48 11.8635323754 +07 08 46.476748377   12.189   10.375   K7V 46 0
12 BD-21 784 PM* 04 06 34.8414407294 -20 51 11.225911422 12.095 10.904 9.675 8.93 8.309 K7V 65 0
13 BD-21 784b Pl 04 06 34.8414407294 -20 51 11.225911422           ~ 3 0
14 L 229-91 PM* 04 09 15.6684896752 -53 22 25.289691709 14.397 13.302 11.811 10.734 9.32 M3.5 78 2
15 BD-11 916 PM* 04 37 41.8658538225 -11 02 19.970320151 13.041 11.838 10.331 9.327 8.137 M1V 110 0
16 HD 285968 PM* 04 42 55.7753203198 +18 57 29.394344631 12.668 11.49 9.951 8.931 7.702 M2.5V 269 2
17 NAME L 736-30b Pl 04 53 49.9799241551 -17 46 24.309239662           ~ 4 0
18 L 736-30 PM* 04 53 49.9799241551 -17 46 24.309239662 13.598 12.443 10.894 9.876 8.671 M3V 86 0
19 NAME L 736-30c Pl 04 53 49.9799241551 -17 46 24.309239662           ~ 4 0
20 L 737-9 ** 05 08 35.0444278689 -18 10 19.386131314 12.893 11.809 10.302 9.161 7.661 M3.5V 84 0
21 CD-36 2458 PM* 05 47 40.5789898625 -36 19 42.834872962 13.307 12.194 10.736 9.763 8.614 M1.5 62 0
22 HD 42581b Pl 06 10 34.6152510171 -21 51 52.658021185           ~ 8 0
23 HD 42581 Er* 06 10 34.6152510171 -21 51 52.658021185 10.801 9.607 8.125 7.164 6.121 M1V 414 0
24 Ross 54 SB* 07 04 17.7023584963 -10 30 31.576967626 13.9 12.822 11.303 10.187 8.738 M3.5V 52 0
25 Ross 391 PM* 07 47 03.0890394952 -13 56 19.158755667   13.17 11.482 11.007   M0 35 0
26 L 678-39 PM* 09 36 01.6372518187 -21 39 38.878281901 13.647 12.48 10.906 9.858 8.577 M2.5V 111 0
27 CD-29 8019 PM* 10 01 10.7419971589 -30 23 24.525412767 14.026 12.918 11.440 10.363 8.975 M3V 56 0
28 HD 304043b Pl 11 16 00.2045864202 -57 32 51.571393210           ~ 3 0
29 HD 304043 PM* 11 16 00.2045864202 -57 32 51.571393210 13.666 12.848 11.516 10.497 9.132 M3.5 54 1
30 CD-23 10062 PM* 11 34 37.9575388152 -23 52 15.152031369 13.883 12.689 11.166 10.211 9.196 M0V 40 0
31 CD-31 9113b Pl 11 35 26.9474098036 -32 32 23.883014588           ~ 15 1
32 CD-31 9113c Pl 11 35 26.9474098036 -32 32 23.883014588           ~ 5 1
33 CD-31 9113 PM* 11 35 26.9474098036 -32 32 23.883014588 12.508 11.322 9.813 8.821 7.664 M2V 134 1
34 LP 733-71 PM* 11 46 42.9130951977 -14 00 51.781505601 14.331 13.19 11.700 10.639 9.287 M3V 69 0
35 CD-45 7872 PM* 12 35 58.3957048308 -45 56 20.486891532 13.748 12.578 11.096 10.093 8.906 M1.0 51 0
36 L 147-101 PM* 13 01 19.6468369978 -63 11 42.185656155 13.637 12.441 10.929 9.962 8.98 M1V 40 0
37 CD-27 9225 PM* 13 25 48.8467704999 -28 22 26.352748903 13.692 12.528 11.015 10.019 8.871 M1 60 0
38 NAME Proxima Centauri Er* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1029 0
39 BD-07 4003 BY* 15 19 26.8271336166 -07 43 20.190958776 13.403 11.76 10.560 9.461 8.911 M3V 552 2
40 G 152-50 PM* 15 47 24.5487998193 -10 53 47.266942275 14.179 12.88 11.279 10.213 8.907 M2.5V 50 1
41 CD-24 12677 PM* 16 23 07.6434241274 -24 42 35.226687119 12.863 11.677 10.216 9.284 8.314 M2V 67 0
42 L 74-113 PM* 16 48 24.4692934575 -72 58 33.913110391 14.077 12.887 11.326 10.341 9.242 M2 52 0
43 BD-15 4394 PM* 16 48 45.9606629536 -15 44 20.158535176 13.562 12.365 10.887 9.913 8.81 M1.5Vk: 36 0
44 HD 156384C PM* 17 18 58.8271844065 -34 59 48.612934284 12.96 11.79 10.22 10.05 8.82 M1.5V 173 1
45 CD-51 10924 PM* 17 30 11.2030058822 -51 38 13.139736838 12.317 11.028 9.585 8.675 8.60 M0V 87 1
46 CD-44 11909 PM* 17 37 03.6657231894 -44 19 09.168952602 13.791 12.593 10.946 9.729 8.145 M3.5 105 0
47 CD-44 11909b Pl 17 37 03.6657231894 -44 19 09.168952602           ~ 3 0
48 CD-44 11909c Pl 17 37 03.6657231894 -44 19 09.168952602           ~ 4 0
49 NAME Barnard's star BY* 17 57 48.4997994034 +04 41 36.111354228 12.497 11.24 9.511 8.298 6.741 M4V 686 2
50 CD-48 12818 PM* 18 59 07.4586018326 -48 16 28.064882086 13.73 12.615 11.142 10.104 8.8 M4V 50 0
51 Smethells 36 PM* 19 19 49.6759452060 -53 43 13.752687078   13.35 12.07 9.8 8.58 M2V 24 0
52 Ross 769 PM* 21 04 53.3814348388 -16 57 31.948746396 14.061 12.946 11.467 10.505 9.421 M1.5V 58 0
53 Wolf 918 PM* 21 09 17.4274978426 -13 18 09.019135738 13.501 12.362 10.869 9.891 8.805 M1V 125 0
54 CD-60 7821 PM* 21 59 34.7027780553 -59 45 10.135385516 12.37 11.189 9.715 8.762 7.738 M2V 60 0
55 HD 209290 PM* 22 02 10.2751729794 +01 24 00.830153206 11.838 10.616 9.146 8.213 7.245 M0.5V 197 0
56 BD-05 5715 PM* 22 09 40.3443754647 -04 38 26.651267098 13.006 11.868 10.366 9.279 7.877 M3.5V 233 1
57 CD-57 8545 PM* 22 23 33.3031322839 -57 13 14.261081690 13.381 12.185 10.708 9.748 8.701 M1Vk: 53 0
58 L 106-104 PM* 22 46 45.1321260532 -63 18 05.288663712 14.12 13.21 11.412 11.006 9.412 M3V 25 0
59 CD-26 16501 PM* 23 10 15.7442594237 -25 55 52.704272779 14.068 12.808 11.273 10.256 9.064 M2V 56 0
60 BD-22 6219 PM* 23 54 46.3042143548 -21 46 28.240841562 13.483 12.268 10.809 9.896 8.992 M0V 46 0

    Equat.    Gal    SGal    Ecl

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2021.04.16-09:32:53

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