2020NatAs...4..650T


Query : 2020NatAs...4..650T

2020NatAs...4..650T - Nature Astronomy, 4, 650-657 (2020/July-0)

An eclipsing substellar binary in a young triple system discovered by SPECULOOS.

TRIAUD A.H.M.J., BURGASSER A.J., BURDANOV A., KUNOVAC HODZIC V., ALONSO R., BARDALEZ GAGLIUFFI D., DELREZ L., DEMORY B.-O., DE WIT J., DUCROT E., HESSMAN F.V., HUSSER T.-O., JEHIN E., PEDERSEN P.P., QUELOZ D., McCORMAC J., MURRAY C., SEBASTIAN D., THOMPSON S., VAN GROOTEL V. and GILLON M.

Abstract (from CDS):

Mass, radius and age are three of the most fundamental parameters for celestial objects, enabling insight into the evolution and internal physics of stars, brown dwarfs and planets. Brown dwarfs are hydrogen-rich objects that are unable to sustain core fusion reactions but are supported against collapse by electron degeneracy pressure1. As they age, brown dwarfs cool, reducing their radius and luminosity. Young exoplanets follow a similar behaviour. Brown dwarf evolutionary models are relied upon to infer the masses, radii and ages of young brown dwarfs2,3. Similar models are also used to infer the mass and radius of directly imaged exoplanets4. Unfortunately, only sparse empirical mass, radius and age measurements are currently available, and so the models remain mostly unvalidated. Double-line eclipsing binaries provide the most direct route towards the absolute determination of the masses and radii of stars5-7. Here we report the discovery by SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars) of the 2M1510A triple system, consisting of a nearby, eclipsing, double-line brown dwarf binary and a widely separated tertiary brown dwarf companion. We find that the system is a member of Argus, a 45 ± 5 million-year-old moving group8,9. The system's age matches those of currently known directly imaged exoplanets so 2M1510A provides an opportunity to benchmark evolutionary models of brown dwarfs and young planets. We find that widely used evolutionary models3 do reproduce the mass, radius and age of the binary components remarkably well, but overestimate their luminosity by up to 0.65 magnitudes, which could result in underestimations of 20% to 35% of photometric masses for directly imaged exoplanets and young-field brown dwarfs.

Abstract Copyright: ©

Journal keyword(s): Solar and Stellar Astrophysics - Earth and Planetary Astrophysics

Simbad objects: 64

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Number of rows : 64
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 KELT-1b Pl 00 01 26.9169325133 +39 23 01.782142922           ~ 94 0
2 TYC 2291-1627-1 EB* 01 13 51.2969940264 +31 49 09.757524180   10.61 10.11     M 15 0
3 LP 588-25 EB* 01 38 51.4094210303 -00 16 21.889258632     18.14     M6V 27 0
4 DENIS J020529.0-115925 BD* 02 05 29.3651195393 -11 59 29.721210536           L7V 145 0
5 HD 14326 SB* 02 18 13.2449536872 -31 05 17.387799288   10.510 9.914 9.57 9.338 G0V 16 0
6 2MASS J02495639-0557352 ** 02 49 56.3883487464 -05 57 35.425697904           M6 5 0
7 NAME RR Cae b Pl 04 21 05.5631969817 -48 39 07.062891386           ~ 6 1
8 VSS XI-2 TT* 04 31 15.7844819592 +18 20 07.067360328     15.72     M4.25 47 0
9 2MASS J04463285+1901432 EB* 04 46 32.8622247312 +19 01 43.246330320   19.9 19.0     M 24 0
10 GSC 06465-00602 ** 04 48 23.3159534736 -24 50 16.879808400   14.052 13.605     ~ 9 0
11 V* V2384 Ori EB* 05 35 21.8473218600 -05 46 08.571352260       19.21 17.28 M7 95 1
12 TYC 6493-290-1 ** 05 40 46.1693610648 -24 55 35.178948912   12.79 12.058     ~ 8 0
13 GSC 06493-00315 ** 05 42 49.1144333592 -25 59 47.445947592   13.580 13.114     ~ 10 0
14 TYC 8527-329-1 SB* 05 43 51.4708541544 -57 09 48.620946996   12.45 11.67     ~ 8 0
15 LP 837-20 EB* 05 44 57.9330491832 -24 56 09.713268096     15.29     M4.5Ve 15 0
16 CD-57 1311 SB* 05 55 32.62392 -57 17 26.1312           ~ 19 0
17 CoRoT-15b BD? 06 28 27.8204 +06 11 10.477   17.012 15.997 15.807   ~ 43 1
18 LP 661-13 SB* 06 56 18.9454767864 -08 35 46.512397860     13.97 12.76 11.17 M3.5 23 0
19 2MASS J07003664+3157266 BD* 07 00 36.7233300485 +31 57 25.462866965           L3+L6.5 36 0
20 2MASS J08381155+1511155 BD? 08 38 11.55336 +15 11 15.5112           ~ 8 0
21 2MASS J08394203+2017450 EB* 08 39 42.0339574272 +20 17 45.101021064           M5V 28 0
22 2MASS J08504984+1948364 EB* 08 50 49.8423820800 +19 48 36.547637508           M5V 32 0
23 SDSS J085746.18+034255.3 ** 08 57 46.1848948032 +03 42 55.352826180           DA+M 25 0
24 2MASSW J0920122+351742 BD* 09 20 12.23664 +35 17 42.9684           L5.5+L9 43 0
25 LP 261-75 B BD* 09 51 05.49288 +35 58 02.1288           L6V 56 0
26 TYC 6604-547-1 * 09 54 52.8927578544 -23 19 55.744444272   11.14 10.71     ~ 8 0
27 TYC 245-630-1 SB* 10 13 50.8314491832 +01 59 28.227909696   12.05 11.87     ~ 8 0
28 EBLM J1038-37 EB* 10 38 24.4774324080 -37 50 17.989384452           ~ 5 0
29 V* V764 Car EB* 10 53 51.1166673312 -61 34 13.644573348     17.71   16.53 ~ 22 0
30 V* V816 Car EB* 11 06 51.0923613144 -61 11 10.465836036     16.161 16.07 15.05 FV+MV 30 1
31 V* V817 Car EB* 11 06 51.8853827760 -60 51 45.902051712     16.809   15.61 ~ 33 1
32 UCAC4 268-060668 * 11 15 59.6434832040 -36 27 33.853060656   12.891 12.390 12.388   ~ 3 0
33 WASP-128b BD? 11 31 26.0933641458 -41 41 22.299023767           ~ 19 0
34 TWA 26 LM* 11 39 51.1378374696 -31 59 21.443660124         15.83 M8e 103 0
35 UCAC2 33047398 * 11 40 57.7883247720 +03 40 53.646749112   15.272 14.569 14.606   ~ 13 0
36 CD-39 7570 EB* 12 19 21.0336457752 -39 51 25.585123356   11.10 10.32     K0V 16 0
37 SIPS J1256-1257 LM* 12 56 02.1337046541 -12 57 21.924307013     17.759   13.318 M7.0 41 0
38 TYC 7284-224-1 EB* 14 03 40.1922763296 -32 33 27.230143500   13.26 12.07     ~ 4 0
39 V* GK Vir ** 14 15 36.4128319176 +01 17 18.226779000   17.0       DAe+M 99 0
40 NAME Proxima Centauri Er* 14 29 42.9461331854 -62 40 46.164680672 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1160 0
41 EBLM J1431-11 EB* 14 31 52.1470814088 -11 18 40.439462148           ~ 5 0
42 2MASS J15104761-2818234 LM* 15 10 47.6042163408 -28 18 23.468154192           M9 5 0
43 2MASS J15104786-2818174 LM* 15 10 47.8572999576 -28 18 17.519894532           M8e 17 0
44 LP 563-38 EB* 15 46 04.3030642435 +04 41 30.066220912   17.1   15.0   M5.1 32 1
45 UGCS J160339.22-185129.4 EB* 16 03 39.2319975144 -18 51 29.400368220           M2.5e 23 0
46 DENIS J161630.6-251220 LM* 16 16 30.6738768240 -25 12 20.215798956   19.5   17.3 15.042 M4.5V-M5V+M4.5V-M5V 31 0
47 CoRoT-33b Pl? 18 38 33.9101911792 +05 37 28.787049157           ~ 19 0
48 Kepler-486b Pl 18 59 31.1991510825 +49 16 01.170776185           ~ 31 0
49 G 205-57C BD? 19 10 14.284032 +46 57 24.10632           ~ 36 0
50 KOI-362 EB* 19 23 59.2554767856 +37 11 57.177016728       13.78   ~ 33 2
51 2MASS J19265907+0029061 EB* 19 26 59.0803024320 +00 29 06.220432644   17.092 16.049 15.670 14.934 F+D 9 0
52 CoRoT-3b Pl 19 28 13.2642482783 +00 07 18.614302248           ~ 128 1
53 KOI-415b Pl? 19 33 13.4495838492 +41 36 22.965658614           ~ 37 0
54 2MASS J19350355+3631165 EB* 19 35 03.5536693080 +36 31 16.532966172           M 13 0
55 Kepler-492b Pl 19 41 59.1967192074 +42 32 16.400829033           ~ 37 0
56 Kepler-39b Pl 19 47 50.4745660177 +46 02 03.499173435           ~ 59 1
57 TYC 500-1187-1 Ro* 20 17 35.8427243880 +02 15 51.096886272   11.83 11.39     ~ 5 0
58 LP 107-25 EB* 21 28 09.3992024328 +63 21 01.438597512   15.487 13.849 13.576   M3.82 13 0
59 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 760 0
60 1SWASP J230808.34+333803.9 EB* 23 08 08.3429939160 +33 38 03.955818408   11.23 10.66     ~ 17 0
61 TYC 8448-418-1 * 23 08 45.6742747536 -46 06 36.716465412   11.73 11.35     ~ 5 0
62 TYC 7519-142-1 SB* 23 49 15.2397740040 -32 46 17.466168252   12.14 11.52     ~ 5 0
63 WASP-30b BD? 23 53 38.054 -10 07 05.12           ~ 40 1
64 NAME Argus Association As* ~ ~           ~ 206 0

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2022.10.07-04:40:39

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