2003AJ....126.3099E


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.13CET15:07:34

2003AJ....126.3099E - Astron. J., 126, 3099-3107 (2003/December-0)

A dedicated M dwarf planet search using the Hobby-Eberly telescope.

ENDL M., COCHRAN W.D., TULL R.G. and MacQUEEN P.J.

Abstract (from CDS):

We present the first results from our planet-search program using the 9.2 m Hobby-Eberly Telescope (HET) at McDonald Observatory to detect planets around M-type dwarf stars by means of high-precision radial velocity (RV) measurements. Although more than 100 extrasolar planets have been found around solar-type stars of spectral type F-K, there is only a single M dwarf (GJ 876) known to harbor a planetary system. With the current incompleteness of Doppler surveys with respect to M dwarfs, it is not yet possible to decide whether this is due to a fundamental difference in the formation history and overall frequency of planetary systems in the low-mass regime of the Hertzsprung-Russell diagram, or simply an observational bias. Our HET M dwarf survey plans to survey 100 M dwarfs in the next 3 to 4 years, with the primary goal being to answer this question. Here we present the results from the first year of the survey, which show that our routine RV precision for M dwarfs is 6 m/s. We found that GJ 864 and GJ 913 are binary systems with as yet undetermined periods, while five out of 39 M dwarfs reveal a high RV scatter and represent candidates for having short-period planetary companions. For one of them, GJ 436 (rms=20.6 m/s), we have already obtained follow-up observations, but no periodic signal is present in the RV data.

Abstract Copyright:

Journal keyword(s): Stars: Planetary Systems: General - Stars: Late-Type - Stars: Low-Mass, Brown Dwarfs - Techniques: Radial Velocities

Errata: erratum vol. 132, p.2755 (2006)

Simbad objects: 37

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Number of rows : 37

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 BD+44 4548 PM* 00 05 10.8891772602 +45 47 11.639549811   11.45   9.2   M2Ve 125 0
2 BD+02 348 PM* 02 12 20.9874569826 +03 34 32.230562527 12.552 11.477 10.042 9.092 7.988 M1V 144 0
3 Ross 588 PM* 03 47 58.0982587482 +02 47 16.150130499 13.771 12.58 11.044 10.086 9.059 M0V 54 0
4 BD+52 911 PM* 05 03 23.9014100324 +53 07 42.487841299   11.789 10.059 9.08 8.11 M0.5Ve 77 0
5 G 85-52 PM* 05 12 42.2265962548 +19 39 56.356342775 13.493 12.308 10.746 9.728 8.529 M0V 66 0
6 G 191-45 PM* 05 34 08.6634642422 +51 12 56.366607272   12.35 11.069 10.593   M1.0Ve 30 0
7 BD+12 1343 PM* 06 54 56.9830963775 +12 09 29.157317883       10.1   K5 43 0
8 G 107-65 PM* 07 23 14.8951251540 +46 05 14.685421330       10.059   M1V 61 0
9 G 234-5 PM* 07 34 27.4326550030 +62 56 29.361794163       9.973   M0V 60 0
10 BD+02 1729 PM* 07 39 23.0387126510 +02 11 01.197472387 12.328 11.055 9.589 8.683 7.777 M0.0Ve 97 0
11 Wolf 1421 PM* 07 48 16.3858662967 +20 22 05.252472606 14.108 12.957 11.418 10.437 9.304 M1.5Ve 69 0
12 G 234-35 PM* 08 29 56.3281695664 +61 43 32.740159867   12.129   9.4   K7V 45 0
13 BD+67 552 ** 08 36 25.4460279441 +67 17 41.851565991   11.153   8.4   M0.5Ve 88 0
14 BD+02 2098 PM* 08 55 07.6219262945 +01 32 47.416477421 12.642 11.30 9.997 9.072 8.204 M0V 84 1
15 BD+36 1970 PM* 09 31 56.3328833946 +36 19 12.825841093       9.799   M1V 71 0
16 BD+48 1829 PM* 10 02 21.7516441689 +48 05 19.687165248       9.4   M1V 66 0
17 HD 95735 Fl* 11 03 20.19400 +35 58 11.5682 10.030 8.960 7.520 5.99 4.79 M2+V 613 1
18 Wolf 386 PM* 11 23 44.5739532616 +08 33 48.554327159 13.837 12.678 11.185 10.22 9.137 M0V 56 0
19 Ross 905 PM* 11 42 11.0933874353 +26 42 23.658083337   12.06 10.613 10.272 8.24 M3V 474 1
20 HD 122120 PM* 13 59 19.4031250318 +22 52 11.104265518 11.357 10.209 9.040 8.353 7.775 K5V 81 0
21 BD+16 2658 PM* 14 29 29.6973349522 +15 31 57.498714295 13.385 12.176 10.676 9.674 8.467 M2/3V 99 0
22 V* V645 Cen Fl* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 902 0
23 BD+39 2801 PM* 14 48 01.4255450611 +38 27 58.442409039   11.16 9.711 9.349   K7Ve 45 0
24 G 202-45 SB* 16 24 09.3137145795 +48 21 11.107573476   12.099       M3.0Ve 162 1
25 G 181-39 PM* 17 19 52.7126409684 +41 42 49.698739005   11.423   10.4   M2V 68 0
26 BD+68 946 PM* 17 36 25.8991699744 +68 20 20.904135942 11.73 10.65   8.3   M3.0V 245 0
27 NAME Barnard's star BY* 17 57 48.4997994034 +04 41 36.111354228 12.497 11.24 9.511 8.298 6.741 M4V 631 2
28 HD 348282 PM* 18 15 18.2962892259 +18 29 59.987430055   11.4 10.057 9.600   K7V 50 0
29 Ross 145 PM* 18 41 59.0356870572 +31 49 49.761626262   12.84 13.126 10.845   M2V 58 0
30 HD 229793 PM* 18 51 51.1836152719 +16 34 59.814863531 12.787 11.585 10.104 9.174 8.23 M0V 66 0
31 Wolf 1062 ** 19 12 14.6156897487 +02 53 11.438190161 13.722 12.663 11.143 10.016 8.534 M3.5V 128 0
32 G 215-20 PM* 21 53 59.0017316769 +41 46 44.474771062   11.68   9.846   M0.5V 62 0
33 BD-05 5715 PM* 22 09 40.3443754647 -04 38 26.651267098 13.006 11.868 10.366 9.279 7.877 M3.5V 215 1
34 HD 214100 PM* 22 36 09.6872623687 -00 50 29.765710791   11.431 9.930 9.877   M1V 71 0
35 BD-15 6290 BY* 22 53 16.7323107416 -14 15 49.303409936 12.928 11.749 10.192 9.013 7.462 M3.5V 836 1
36 BD+57 2735 PM* 23 24 30.5145080333 +57 51 15.516771965   11.56   9.586   M1.5Ve 91 0
37 BD+45 4378 ** 23 58 43.4881610546 +46 43 44.737257440   11.02 9.78 9.25   K7V 65 0

    Equat.    Gal    SGal    Ecl

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2019.12.13-15:07:34

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