2017A&A...608A.129T


Query : 2017A&A...608A.129T

2017A&A...608A.129T - Astronomy and Astrophysics, volume 608A, 129-129 (2017/12-1)

The EBLM Project. IV. Spectroscopic orbits of over 100 eclipsing M dwarfs masquerading as transiting hot Jupiters.

TRIAUD A.H.M.J., MARTIN D.V., SEGRANSAN D., SMALLEY B., MAXTED P.F.L., ANDERSON D.R., BOUCHY F., COLLIER CAMERON A., FAEDI F., GOMEZ MAQUEO CHEW Y., HEBB L., HELLIER C., MARMIER M., PEPE F., POLLACCO D., QUELOZ D., UDRY S. and WEST R.

Abstract (from CDS):

We present 2271 radial velocity measurements taken on 118 single-line binary stars, taken over eight years with the CORALIE spectrograph. The binaries consist of F/G/K primaries and M dwarf secondaries. They were initially discovered photometrically by the WASP planet survey, as their shallow eclipses mimic a hot Jupiter transit. The observations we present permit a precise characterisation of the binary orbital elements and mass function. With modelling of the primary star, this mass function is converted to a mass of the secondary star. In the future, this spectroscopic work will be combined with precise photometric eclipses to draw an empirical mass/radius relation for the bottom of the mass sequence. This has applications in both stellar astrophysics and the growing number of exoplanet surveys around M dwarfs. In particular, we have discovered 34 systems with a secondary mass below 0.2M, and so we will ultimately double the number of known very low-mass stars with well-characterised masses and radii. The quality of our data combined with the amplitude of the Doppler variations mean that we are able to detect eccentricities as small as 0.001 and orbital periods to sub-second precision. Our sample can revisit some earlier work on the tidal evolution of close binaries, extending it to low mass ratios. We find some exceptional binary systems that are eccentric at orbital periods below three days, while our longest circular orbit has a period of 10.4 days. Amongst our systems, we note one remarkable architecture in J1146-42 that boasts three stars within one astronomical unit. By collating the EBLM binaries with published WASP planets and brown dwarfs, we derive a mass spectrum with twice the resolution of previous work. We compare the WASP/EBLM sample of tightly bound orbits with work in the literature on more distant companions up to 10 AU. We note that the brown dwarf desert appears wider, as it carves into the planetary domain for our short-period orbits. This would mean that a significantly reduced abundance of planets begins at ∼3MJup, well before the deuterium-burning limit. This may shed light on the formation and migration history of massive gas giants.

Abstract Copyright: © ESO, 2017

Journal keyword(s): binaries: eclipsing - techniques: photometric - techniques: radial velocities - brown dwarfs - stars: statistics - stars: luminosity function, mass function - stars: luminosity function, mass function

Nomenclature: EBLM JHHMM+DD N=118.

Simbad objects: 123

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Number of rows : 123
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 TYC 4-331-1 SB* 00 08 57.9775607952 +02 56 42.032861556   10.34 10.05     ~ 7 1
2 EBLM J0017-38 EB* 00 17 48.3515944440 -38 06 38.930602572   13.499 12.976 12.953   ~ 2 0
3 BD-16 52 PM* 00 21 00.7727364192 -16 07 28.608938940   10.49 9.80     G5 2 0
4 TYC 7528-481-1 SB* 00 27 16.5233107872 -41 34 17.682832092   12.53 11.76     ~ 5 0
5 UCAC2 1664956 PM* 00 35 40.4456677344 -69 48 52.390799928   12.59 12.02 11.98 11.39 ~ 5 0
6 TYC 11-1042-1 SB* 00 40 01.4990540232 +01 05 40.379781696   12.00 11.39     ~ 4 0
7 BD-18 113 PM* 00 42 34.2205499304 -17 17 53.211077484   11.62 11.00     ~ 4 0
8 NGC 188 OpC 00 47 12 +85 14.6           ~ 873 0
9 TYC 8848-560-1 * 00 48 21.4790568768 -66 09 36.975247452   12.054 11.555     ~ 5 0
10 TYC 5850-383-1 * 00 57 58.9513215384 -19 49 47.465388336   12.44 11.65     ~ 1 0
11 TYC 7533-1169-1 SB* 01 04 19.1305651848 -38 18 30.695209632   11.57 11.25     ~ 4 0
12 EBLM J0109-67 EB* 01 09 12.9499582632 -67 55 08.245950204           ~ 1 0
13 HD 14326 SB* 02 18 13.2449536872 -31 05 17.387799288   10.510 9.914 9.57 9.338 G0V 16 0
14 TYC 45-1252-1 SB* 02 28 08.8741828560 +05 35 47.771977668   10.63 10.23     ~ 3 0
15 BD-20 499 * 02 39 29.2866721416 -20 02 23.987131656   11.34 10.63     ~ 1 0
16 HD 17577 PM* 02 47 20.5053089496 -51 27 10.396755180   10.08 9.55     F5V 10 0
17 HD 19827 * 03 10 22.6270764216 -31 07 35.787163260   9.93 9.33     G0V 8 0
18 TYC 6439-1132-1 * 03 15 26.5289696208 -24 15 45.522118404   11.98 11.32     ~ 1 0
19 EBLM J0326-09 SB* 03 26 45.0194559144 -09 20 31.666130988           ~ 2 0
20 TYC 67-354-1 SB* 03 39 09.6380569440 +03 05 37.670638992   11.73 11.38     ~ 4 0
21 BD-07 690 SB* 03 51 00.5375660160 -07 05 55.023490500   11.19 10.77     ~ 2 0
22 TYC 72-1041-1 SB* 03 53 08.9490211656 +05 36 33.160137768   11.70 11.17     ~ 5 1
23 BD-17 751 * 03 53 54.5221228848 -16 57 15.361616628   11.16 10.52     ~ 5 0
24 EBLM J0400-51 EB* 04 00 56.8899712488 -51 07 27.451329132           ~ 1 0
25 CD-46 1408 SB* 04 25 31.7080960848 -46 13 07.727710260   11.504 10.896     ~ 7 0
26 GSC 07041-00214 ** 04 32 58.7929757544 -33 29 47.913782640   11.602 11.135 11.132   ~ 5 0
27 TYC 8079-909-1 * 04 40 14.5873545144 -48 17 52.681133580   12.058 11.521     ~ 5 0
28 TYC 4747-1130-1 * 04 43 01.7709539640 -06 25 50.741310180   11.95 11.60     ~ 3 0
29 EBLM J0454-09 SB* 04 54 11.2360127040 -09 29 53.378478348           ~ 2 0
30 HD 272695 * 05 00 32.8609494120 -46 11 21.310175256   12.69 12.03     G0 5 0
31 TYC 7587-505-1 * 05 02 38.5863320160 -38 43 31.053476712   12.58 12.06     ~ 1 0
32 TYC 5323-1283-1 SB* 05 04 34.9316416728 -09 13 29.126664516   12.40 11.77     ~ 2 0
33 CD-39 1898 * 05 18 46.4767337736 -39 03 16.351373808   10.624 10.190     ~ 6 0
34 EBLM J0520-06 SB* 05 20 59.4757372248 -06 42 16.593082272           ~ 2 0
35 TYC 8522-455-1 * 05 25 24.7154948472 -55 01 11.644680180   11.52 11.07     ~ 3 0
36 1SWASP J052604.85+045135.4 SB* 05 26 04.8492103920 +04 51 35.408332368   12.858 12.175 12.081   ~ 3 0
37 TYC 7063-637-1 * 05 26 39.0713659224 -34 36 59.308587756   11.715 11.205     ~ 6 0
38 TYC 5921-745-1 * 05 40 43.5839917488 -17 32 44.814245640   12.19 11.31     ~ 3 0
39 TYC 8527-329-1 SB* 05 43 51.4708541544 -57 09 48.620946996   12.45 11.67     ~ 8 0
40 EBLM J0546-18 EB* 05 46 04.8071516736 -18 17 54.570440184           ~ 1 0
41 TOI-1338 * 06 08 31.9675204416 -59 32 28.081703112   12.537 11.975     ~ 23 0
42 TYC 8521-144-1 * 06 10 53.6167503192 -52 53 46.568612220   11.55 11.13     ~ 1 0
43 TYC 8102-960-1 * 06 21 53.5340464488 -46 13 10.078655016   12.83 11.97     ~ 1 0
44 TYC 8114-1646-1 * 06 21 56.6453827632 -50 55 32.441201220   12.27 11.94     ~ 2 0
45 TYC 6514-1296-1 * 06 23 11.4323019072 -27 43 44.905209852   12.25 11.65     ~ 2 0
46 EBLM J0625-43 EB* 06 25 16.0666815984 -43 47 11.893396884           ~ 1 0
47 TYC 9177-541-1 * 06 27 31.3841853336 -67 46 18.821106984   11.93 11.52     ~ 1 0
48 EBLM J0627-59 EB* 06 27 47.5718123616 -59 12 56.797688556   12.726 12.088 12.051   ~ 2 0
49 TYC 8906-294-1 * 06 29 14.1583418520 -67 25 11.361131904   12.27 12.39     ~ 1 0
50 CD-60 1544 * 06 42 03.3328098144 -60 40 13.007842140   10.60 10.11     ~ 2 0
51 CD-60 1562 * 06 45 15.7919078376 -61 05 29.438165256   10.59 10.09     ~ 3 0
52 TYC 6529-2778-1 * 06 45 37.9311318000 -26 42 42.366287268   12.82 12.49     ~ 1 0
53 HD 49816 * 06 49 06.0079523496 -27 20 58.402744980   10.57 10.09     F6V 5 0
54 TYC 7096-222-1 EB* 06 50 29.0839784088 -34 36 17.745454332   10.72 10.28     Am+M 3 1
55 TYC 8908-677-1 * 06 59 07.7857169736 -61 50 24.242250768   12.43 11.36     ~ 3 0
56 TYC 7089-2061-1 * 07 00 42.3724061088 -30 43 08.897079648   12.51 11.94     ~ 1 0
57 EBLM J0709-52 EB* 07 09 15.3011785584 -52 55 17.700578400           ~ 1 0
58 EBLM J0801+02 SB* 08 01 18.0793136208 +02 34 09.102698724           ~ 2 0
59 NGC 2682 OpC 08 51 23 +11 48.8           ~ 2202 0
60 EBLM J0851+05 SB* 08 51 54.0015055704 +05 42 30.689495820           ~ 2 0
61 BD+05 2082 SB* 08 55 27.4881375288 +04 50 04.751854440   9.60 9.17     F2 8 0
62 TYC 7167-584-1 SB* 09 41 16.7628253152 -31 49 10.305656076   11.62 11.08     ~ 2 0
63 HD 85004 SB* 09 48 49.4564901792 -08 29 36.428228556   9.74 9.31     F0V 11 0
64 TYC 6604-547-1 * 09 54 52.8927578544 -23 19 55.744444272   11.14 10.71     ~ 8 0
65 CD-44 5997 * 09 54 58.6863765864 -45 17 26.185993980   10.25 9.82     F2 4 0
66 EBLM J0955-39 EB* 09 55 18.2771576904 -39 52 58.963573416           ~ 1 0
67 TYC 7711-1449-1 EB* 10 07 10.0798234464 -40 28 16.726796544   11.24 10.79     ~ 3 0
68 CD-28 7935 * 10 08 33.5451576432 -29 35 57.554152908   11.10 10.60     ~ 1 0
69 TYC 245-630-1 SB* 10 13 50.8314491832 +01 59 28.227909696   12.05 11.87     ~ 8 0
70 HD 88855 PM* 10 14 45.1002017736 -07 13 33.558276936   10.241 9.931 9.39 9.28 F5/6V 16 0
71 TYC 7721-539-1 EB* 10 23 58.0359464798 -43 25 26.741063909   12.44 11.99     ~ 2 0
72 CD-29 8443 SB* 10 34 18.9044157240 -29 48 55.385348148   11.22 10.76 10.73   ~ 2 1
73 TYC 6637-975-1 SB* 10 37 06.9438907800 -25 34 17.726593980   10.655 10.16 9.83 9.705 ~ 14 0
74 EBLM J1037-45 EB* 10 37 27.4845796368 -45 21 48.166680024           ~ 1 0
75 EBLM J1038-37 EB* 10 38 24.4774324080 -37 50 17.989384452           ~ 5 0
76 TYC 7737-608-1 * 11 04 34.8873247608 -43 14 25.126074636   12.03 11.62     ~ 1 0
77 TYC 5507-1461-1 SB* 11 05 27.6705461856 -13 53 02.143403304   10.891 10.388 9.91 9.955 ~ 9 0
78 TYC 7206-1536-1 * 11 16 08.5552253184 -32 39 07.633344528   12.94 12.09     ~ 4 0
79 EBLM J1116-01 EB* 11 16 44.4209121480 -01 52 07.582035000           ~ 3 0
80 HD 101579 PM* 11 41 12.1883962416 -37 47 29.617446372   10.13 9.57     F7V 8 0
81 CD-41 6765 * 11 46 50.4906185928 -42 36 59.447012076   10.81 10.28     F5 4 0
82 TYC 7243-1498-1 * 12 01 46.8731208072 -36 26 48.963254964   11.40 10.81     ~ 2 0
83 HD 105495 * 12 08 41.3387634552 -29 39 46.792294992   10.51 10.09     F2V 4 0
84 CD-39 7570 EB* 12 19 21.0336457752 -39 51 25.585123356   11.10 10.32     K0V 16 0
85 TYC 7773-590-1 * 13 01 01.1842415520 -37 58 40.879273332   12.41 12.09     ~ 1 0
86 CD-30 10313 V* 13 05 05.7950112720 -31 26 12.198838992     9.8     ~ 4 0
87 HD 125622 * 14 20 47.4905886000 -07 36 33.507617220   10.22 9.74 9.46 9.436 F2V 15 0
88 EBLM J1431-11 EB* 14 31 52.1470814088 -11 18 40.439462148           ~ 5 0
89 TYC 7814-156-1 * 14 33 45.0306959928 -43 00 39.921593580   11.77 11.44     ~ 1 0
90 UCAC2 26899058 * 14 36 46.4123161992 -13 32 35.562617124   12.986 12.480 12.79 11.79 ~ 7 0
91 TYC 7315-1754-1 * 15 00 57.3772914864 -33 26 20.915744784   12.60 12.61     ~ 1 0
92 UCAC2 28031611 * 15 09 40.9476826080 -10 52 10.184732220   12.464 11.955 12.02 11.35 ~ 6 0
93 EBLM J1525-36 EB* 15 25 29.4627974112 -36 24 17.055896616           ~ 1 0
94 BD-05 4208 SB* 15 59 19.8685468440 -05 33 38.246360580   10.31 9.69     F5 16 0
95 TYC 964-1432-1 * 16 30 25.6459370136 +10 09 29.915959392   12.73 12.00     ~ 3 0
96 TYC 7931-842-1 PM* 19 28 58.8491452272 -38 08 27.227663556   12.11 11.20     ~ 2 0
97 UCAC2 13875304 * 19 34 25.6914014040 -42 23 11.978701836   13.38 12.62 12.57 11.82 ~ 6 0
98 NGC 6819 OpC 19 41 18 +40 11.4   8.21 7.3     ~ 555 0
99 EBLM J1944-20 EB* 19 44 00.1333235016 -20 51 05.001901164           ~ 1 0
100 HD 186753 EB* 19 47 10.7653348152 -23 22 52.087118736   9.08 8.80     A2(m)A5-F0 9 1
101 HD 190583 * 20 11 19.7333146032 -71 40 02.452314576   9.862 9.29     F6/7IV 9 0
102 TYC 8405-863-1 PM* 20 25 25.4801975808 -45 49 45.159870216   11.87 11.15     ~ 2 0
103 TYC 501-1138-1 SB* 20 27 38.7740902488 +03 14 26.581711308   11.93 11.46     ~ 2 0
104 TYC 7971-207-1 PM* 20 40 41.5649135232 -41 31 59.999090088   12.24 11.49     ~ 2 0
105 EBLM J2043-18 SB* 20 43 41.2662574608 -18 15 56.550239712           ~ 2 0
106 TYC 7967-574-1 PM* 20 46 38.0868204960 -40 32 19.221502668   12.27 11.49     ~ 2 0
107 TYC 524-2528-1 SB* 20 46 43.8759722040 +06 18 09.706470732   10.48 9.86     ~ 4 0
108 HD 199796 * 21 01 02.2477159416 -45 06 57.498935436   10.869 10.251     F6V 9 0
109 EBLM J2104-46 EB* 21 04 51.4802841048 -46 19 34.337178624           ~ 1 0
110 TYC 7969-518-1 * 21 07 11.0655324768 -39 45 58.764498300   12.50 12.03     ~ 1 0
111 CD-33 15536 * 21 22 57.8575652088 -32 29 17.104970256   11.24 10.62     ~ 2 0
112 UCAC4 171-209209 EB* 21 53 16.5014981688 -55 59 07.364063040   13.503 12.880 12.746   ~ 2 0
113 CD-42 15773 PM* 22 07 28.1351222280 -41 48 55.688787756   10.90 10.39     ~ 7 0
114 HD 210330 * 22 10 48.7449703992 -48 53 26.328858828   9.27 8.77     F6V 11 0
115 TYC 5228-989-1 EB* 22 17 58.1307593304 -04 51 52.887018492   12.44 12.18     ~ 8 0
116 HD 213513 * 22 32 30.2908976376 -31 14 39.204014568   10.87 10.35     F3V 11 0
117 CD-37 14854 * 22 36 40.3162105032 -36 56 38.725876644   11.47 10.99     ~ 1 0
118 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 755 0
119 TYC 8448-418-1 * 23 08 45.6742747536 -46 06 36.716465412   11.73 11.35     ~ 5 0
120 EBLM J2330-61 EB* 23 30 35.0148879840 -61 58 27.784097976           ~ 1 0
121 TYC 7519-142-1 SB* 23 49 15.2397740040 -32 46 17.466168252   12.14 11.52     ~ 5 0
122 WASP-30 * 23 53 38.0549675760 -10 07 05.095516692   12.15 11.91 11.51 10.83 F8V 32 0
123 1SWASP J235346.73-105305.9 SB* 23 53 46.7354820216 -10 53 05.901255960   12.254 11.732 11.792 11.16 ~ 10 0

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2022.09.25-04:44:19

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