2014ApJ...787...27Q


Query : 2014ApJ...787...27Q

2014ApJ...787...27Q - Astrophys. J., 787, 27 (2014/May-3)

HD 285507b: an eccentric hot Jupiter in the Hyades open cluster.

QUINN S.N., WHITE R.J., LATHAM D.W., BUCHHAVE L.A., TORRES G., STEFANIK R.P., BERLIND P., BIERYLA A., CALKINS M.C., ESQUERDO G.A., FURESZ G., GEARY J.C. and SZENTGYORGYI A.H.

Abstract (from CDS):

We report the discovery of the first hot Jupiter in the Hyades open cluster. HD 285507b orbits a V = 10.47 K4.5V dwarf (M*= 0.734 M; R*= 0.656 R) in a slightly eccentric (e = 0.086–0.019+0.018) orbit with a period of 6.0881–0.0018+0.0019 days. The induced stellar radial velocity corresponds to a minimum companion mass of MP sin i = 0.917±0.033 MJup. Line bisector spans and stellar activity measures show no correlation with orbital phase, and the radial velocity amplitude is independent of wavelength, supporting the conclusion that the variations are caused by a planetary companion. Follow-up photometry indicates with high confidence that the planet does not transit. HD 285507b joins a small but growing list of planets in open clusters, and its existence lends support to a planet formation scenario in which a high stellar space density does not inhibit giant planet formation and migration. We calculate the circularization timescale for HD 285507b to be larger than the age of the Hyades, which may indicate that this planet's non-zero eccentricity is the result of migration via interactions with a third body. We also demonstrate a significant difference between the eccentricity distributions of hot Jupiters that have had time to tidally circularize and those that have not, which we interpret as evidence against Type II migration in the final stages of hot Jupiter formation. Finally, the dependence of the circularization timescale on the planetary tidal quality factor, QP, allows us to constrain the average value for hot Jupiters to be logQP = 6.14–0.25+0.41.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual: (Hyades, Melotte 25) - planets and satellites: detection - planets and satellites: dynamical evolution and stability - planet-star interactions - stars: individual: HD 285507

Simbad objects: 35

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Number of rows : 35
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 3765 PM* 00 40 49.2699101367 +40 11 13.819725965   8.30   6.8   K2V 247 0
2 BD+25 522 TT* 03 17 22.86105 +26 18 54.0950   12.51   10.7   K4V 39 0
3 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 3121 0
4 UCAC3 177-11934 * 03 50 13.2081004986 -01 31 09.427819506   13.79 12.84 12.74   ~ 1 0
5 HD 283044 PM* 03 52 41.0098613833 +25 48 15.973496156   12.283 11.21     K7 32 0
6 GSC 00662-01438 * 04 01 12.8645975889 +12 05 48.057099413   13.58 12.22 11.79   ~ 2 0
7 HD 285507 PM* 04 07 01.2254128574 +15 20 06.108426912   11.670 10.473     K4 65 0
8 HD 285507b Pl 04 07 01.2254128574 +15 20 06.108426912           ~ 12 0
9 HD 284155 PM* 04 08 36.2106403813 +23 46 06.999720356   10.39 9.41     G5 27 0
10 HD 26345 PM* 04 10 42.3629962013 +18 25 23.714440814   7.005 6.576 6.329 6.095 F6V 134 0
11 * 45 Tau PM* 04 11 20.2823319709 +05 31 22.987536222   6.057 5.699 5.487 5.284 F4V 229 0
12 HD 286589 ** 04 14 51.9364731462 +13 03 17.842744408   11.890 10.681 10.34   K4 58 0
13 HD 285630 PM* 04 17 25.1519874007 +19 01 47.672234575   11.96 10.80 10.44   K5 30 0
14 HD 286693 PM* 04 19 36.8740642911 +12 37 27.568541673   10.76   9.58   K2 25 0
15 HD 27561 PM* 04 21 34.7950093588 +14 24 35.245998570   6.999 6.578 6.338 6.099 F5IV-V 211 0
16 LP 358-202 PM* 04 24 07.4275448806 +22 07 07.925627722   12.30 11.07 10.56   K5 18 0
17 HD 285742 BY* 04 25 00.2471123212 +16 59 05.631230062   11.276 10.248 9.665 9.178 K4V 78 0
18 HD 284455 PM* 04 26 47.6210265315 +21 14 05.716119576   12.93 11.195 10.900   K5V 25 0
19 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2793 0
20 HD 285765 PM* 04 27 56.7684307826 +19 03 38.940598444   12.43 11.27 10.94   K4/5 21 0
21 HD 285804 PM* 04 28 10.8711748395 +16 28 15.381393326   12.007 11.057 10.70   K7V 50 0
22 HD 28406 PM* 04 29 30.3505336847 +17 51 47.395473227 7.36 7.352 6.890 6.631 6.373 F6V 175 0
23 HD 285805 BY* 04 29 30.9847018452 +16 14 41.229394927   11.48 10.629 10.02   K4V 82 0
24 HD 28608 PM* 04 30 57.1713987199 +10 45 06.362771222   7.491 7.015 6.741 6.479 F7V 115 0
25 HD 284785 PM* 04 47 08.9337937367 +20 52 56.326217882   10.95 9.77 9.62   K4:V 24 0
26 StKM 1-514 PM* 04 47 18.5087753208 +06 27 11.545300588   12.608 11.348 10.89   M0.0Ve 19 0
27 HD 30505 ** 04 49 03.5217039672 +18 38 28.490141947   9.789 8.947 8.492 8.089 K1V 91 0
28 HD 286085 PM* 04 50 00.7134716575 +16 24 43.419231475   11.58 10.69     K6 37 0
29 HD 284855 PM* 04 53 01.1443031290 +23 29 13.200631896   11.4   10.1   K0 10 0
30 BD+13 741 PM* 04 57 00.6762271432 +13 54 44.450702970   12.19 10.84 10.55   K5 26 0
31 * 101 Tau PM* 04 59 44.3215855444 +15 55 00.238515439   7.220 6.747     F5V 123 0
32 HD 38230 PM* 05 46 01.8856610139 +37 17 04.737324425   8.19   6.8   K0V 146 0
33 NGC 2632 OpC 08 40 24 +19 40.0           ~ 1330 0
34 NGC 2682 OpC 08 51 18 +11 48.0           ~ 2122 0
35 NGC 6811 OpC 19 37 17 +46 23.3   7.47 6.8     ~ 287 0

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2021.10.24-04:59:01

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