2024MNRAS.530..318H

Query : 2024MNRAS.530..318H

2024MNRAS.530..318H - Mon. Not. R. Astron. Soc., 530, 318-339 (2024/May-1)

NGTS-28Ab: a short period transiting brown dwarf.

HENDERSON B.A., CASEWELL S.L., GOAD M.R., ACTON J.S., GUNTHER M.N., NIELSEN L.D., BURLEIGH M.R., BELARDI C., TILBROOK R.H., TURNER O., HOWELL S.B., CLARK C.A., LITTLEFIELD C., BARKAOUI K., ALVES D.R., ANDERSON D.R., BAYLISS D., BOUCHY F., BRYANT E.M., DRANSFIELD G., DUCROT E., EIGMULLER P., GILL S., GILLEN E., GILLON M., HAWTHORN F., HOOTON M.J., JACKMAN J.A.G., JEHIN E., JENKINS J.S., KENDALL A., LENDL M., McCORMAC J., MOYANO M., PEDERSEN P.P., POZUELOS F.J., RAMSAY G., SEFAKO R.R., TIMMERMANS M., TRIAUD A.H.M.J., UDRY S., VINES J.I., WATSON C.A., WEST R.G., WHEATLEY P.J. and ZUNIGA-FERNANDEZ S.

Abstract (from CDS):

We report the discovery of a brown dwarf orbiting a M1 host star. We first identified the brown dwarf within the Next Generation Transit Survey data, with supporting observations found in TESS sectors 11 and 38. We confirmed the discovery with follow-up photometry from the South African Astronomical Observatory, SPECULOOS-S, and TRAPPIST-S, and radial velocity measurements from HARPS, which allowed us to characterize the system. We find an orbital period of ∼1.25 d, a mass of $69.0^{+5.3}_{-4.8}$ MJ, close to the hydrogen burning limit, and a radius of 0.95 ± 0.05 RJ. We determine the age to be >0.5 Gyr, using model isochrones, which is found to be in agreement with spectral energy distribution fitting within errors. NGTS-28Ab is one of the shortest period systems found within the brown dwarf desert, as well as one of the highest mass brown dwarfs that transits an M dwarf. This makes NGTS-28Ab another important discovery within this scarcely populated region.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): (stars:) brown dwarfs

Simbad objects: 68

goto Full paper

goto View the references in ADS

Number of rows : 68
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 KELT-1b Pl 00 01 26.9168207928 +39 23 01.784206464           ~ 149 0
2 TOI-852b BD? 01 38 57.6639620046 -07 16 51.256349916           ~ 12 0
3 UCAC4 178-001612 PM* 01 40 01.2538819392 -54 31 21.660241008   13.285 12.632 12.631   ~ 7 0
4 TOI-263b Pl 02 28 25.9518748896 -25 05 50.545991256           ~ 19 0
5 GPX-1b Pl? 02 33 28.6057674360 +56 01 32.548681642           ~ 19 0
6 TYC 8863-203-1 SB* 03 05 08.5400272920 -62 51 24.779359944   13.33 12.04     ~ 6 0
7 NAME TIC 220568520 b LM* 03 05 08.5401967140 -62 51 24.782474853           ~ 5 0
8 GSC 06465-00602 EB* 04 48 23.3159534736 -24 50 16.879808400   14.052 13.605     ~ 14 0
9 TOI-694b LM* 05 09 32.0433967574 -64 01 34.303235465           ~ 9 0
10 HD 274870B BD? 05 28 30.7098553322 -48 24 32.302778259           ~ 13 0
11 V* V2384 Ori Or* 05 35 21.8473218600 -05 46 08.571352260       19.21 17.28 M7 109 1
12 TOI-2704 EB* 05 42 49.1144333592 -25 59 47.445947592   13.580 13.114 13.125   ~ 14 0
13 TOI-811b BD? 05 52 07.2569953541 -32 55 30.663337365           ~ 16 0
14 CD-57 1311A * 05 55 32.6884884960 -57 17 26.067451956   10.54 10.03 10.077   ~ 5 0
15 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 549 0
16 HD 44717B BD? 06 23 18.69 +00 53 00.1           ~ 11 0
17 CoRoT-15b BD? 06 28 27.8204 +06 11 10.477   17.012 15.997 15.807   ~ 49 1
18 TOI-746b Pl 06 38 28.9990799544 -67 38 56.321760732           ~ 8 0
19 HATS-70b Pl 07 16 25.0880019528 -31 14 39.858342180           ~ 50 0
20 CD-41 3255B BD? 07 40 24.6582390859 -42 09 16.740639385           ~ 13 0
21 TOI-681b Pl 07 51 34.7953558992 -60 24 44.778352608           ~ 7 0
22 BD+13 1880B BD? 08 17 16.8973986331 +12 36 04.912283928           ~ 20 0
23 HD 74162b Pl 08 41 35.0485048464 -22 11 39.578280288           ~ 7 0
24 EPIC 211946007.01 Pl? 08 42 39.4398272616 +19 24 51.898641012           ~ 17 0
25 EPIC 212036875.01 Pl 08 58 45.6699076392 +20 52 08.782143780           ~ 17 0
26 NAME TOI-2543B BD? 09 06 23.26 +03 34 03.7           ~ 8 0
27 LP 261-75 B BD* 09 51 05.49288 +35 58 02.1288           L6V 71 0
28 CD-22 7715 SB* 09 54 52.8927578544 -23 19 55.744444272   11.14 10.71     ~ 19 0
29 2QZ J103448.9+005200 WD* 10 34 48.9329384976 +00 52 01.371664956   19.23 19.2     DA3.0 35 0
30 TOI-1213b err 10 52 47.9873255359 -67 23 16.132397612           ~ 5 0
31 V* V764 Car EB* 10 53 51.1166673312 -61 34 13.644573348     17.71   16.53 ~ 24 0
32 V* V816 Car EB* 11 06 51.0923613144 -61 11 10.465836036     16.161 16.07 15.05 FV+MV 33 1
33 NAME OGLE-TR 122B BD? 11 06 51.99 -60 51 45.7           ~ 23 1
34 WASP-128b BD? 11 31 26.0933641458 -41 41 22.299023767           ~ 26 0
35 EPIC 201702477.01 Pl? 11 40 57.7883247720 +03 40 53.646749112           ~ 19 0
36 CD-39 7570 SB* 12 19 21.0336457752 -39 51 25.585123356   11.10 10.32     K0V 30 0
37 HD 114762 SB* 13 12 19.7410686234 +17 31 01.630334317 7.78         F9VgF8mF4+M6?V 570 1
38 BD-22 3669B BD? 13 50 20.39 -23 23 00.0           ~ 9 0
39 NGTS-28B * 14 11 42.9919147338 -29 58 26.701251152           ~ 4 0
40 NGTS-28Ab Pl 14 11 43.0772304878 -29 58 30.168514543           ~ 3 0
41 NGTS-28A * 14 11 43.0772304878 -29 58 30.168514543           ~ 2 0
42 EBLM J1431-11 SB* 14 31 52.1470814088 -11 18 40.439462148           ~ 8 0
43 NGTS-19B BD? 15 16 31.5959069782 -25 42 17.824831139           ~ 11 1
44 LP 563-38 EB* 15 46 04.3030642435 +04 41 30.066220912           M5.1 45 1
45 2MASS J16033922-1851294 Or* 16 03 39.2319975144 -18 51 29.400368220           M2.5e 43 0
46 NAME StM 274B BD? 16 17 43.2 +26 18 15           ~ 17 0
47 CoRoT-33b Pl? 18 38 33.9102478176 +05 37 28.786272924           ~ 25 0
48 Kepler-486b Pl 18 59 31.1991605400 +49 16 01.172404596           ~ 43 0
49 G 205-57C BD? 19 10 14.284032 +46 57 24.10632           ~ 44 0
50 EPIC 219388192 b BD? 19 17 34.0 -16 52 17           ~ 33 0
51 KOI-607b LM* 19 19 14.1893586444 +40 36 57.043453992           ~ 19 0
52 KOI-362 EB* 19 23 59.2554767856 +37 11 57.177016728       13.78   ~ 44 2
53 2MASS J19265907+0029061 EB* 19 26 59.0803024320 +00 29 06.220432644   17.092 16.049 15.670 14.934 F+D 12 0
54 CoRoT-3b Pl 19 28 13.2642131544 +00 07 18.613986132           ~ 148 1
55 KOI-415b Pl? 19 33 13.4494812696 +41 36 22.965562764           ~ 45 0
56 2MASS J19350355+3631165 EB* 19 35 03.5536693080 +36 31 16.532966172           M 19 0
57 Kepler-492b Pl 19 41 59.1967605000 +42 32 16.400455944           ~ 46 0
58 KOI-686b Pl? 19 47 21.7811918808 +43 38 49.526781576           ~ 34 0
59 Kepler-39b Pl 19 47 50.4745594512 +46 02 03.499726272           ~ 73 1
60 TYC 8779-1890-1 SB* 19 51 18.3506027640 -55 32 46.927320432   13.01 12.24     G2V+M 7 0
61 TYC 500-1187-1 Ro* 20 17 35.8427243880 +02 15 51.096886272   11.83 11.39     ~ 8 0
62 TOI-1278b BD? 21 21 54.9403734715 +35 38 55.777318896           ~ 23 0
63 K2-76b Pl 22 28 25.3435549728 -06 05 12.002165772           ~ 8 0
64 TOI-148b Pl 22 33 16.9634109327 -38 09 34.979984920           ~ 8 0
65 1SWASP J230808.34+333803.9 EB* 23 08 08.3429939160 +33 38 03.955818408   11.23 10.66     ~ 21 0
66 NGTS-7Ab BD? 23 30 05.2358629579 -38 58 11.462828113           ~ 22 0
67 BD+29 4980 SB* 23 43 18.4165031376 +29 55 56.623055412   11.54 10.53 10.31   ~ 15 0
68 WASP-30b BD? 23 53 38.054 -10 07 05.12           ~ 55 1

To bookmark this query, right click on this link: simbad:objects in 2024MNRAS.530..318H and select 'bookmark this link' or equivalent in the popup menu