J/AJ/157/145 HIRES RVs of three compact, multiplanet systems (Mills+, 2019)
Long-period giant companions to three compact, multiplanet systems.
Mills S.M., Howard A.W., Weiss L.M., Steffen J.H., Isaacson H., Fulton B.J.,
Petigura E.A., Kosiarek M.R., Hirsch L.A., Boisvert J.H.
<Astron. J., 157, 145 (2019)>
=2019AJ....157..145M 2019AJ....157..145M (SIMBAD/NED BibCode)
ADC_Keywords: Radial velocities ; Exoplanets ; Stars, double and multiple
Keywords: planetary systems
Abstract:
Understanding the relationship between long-period giant planets and
multiple smaller short-period planets is critical for formulating a
complete picture of planet formation. This work characterizes three such
systems. We present Kepler-65, a system with an eccentric (e=0.28±0.07)
giant planet companion discovered via radial velocities (RVs) exterior
to a compact, multiply transiting system of sub-Neptune planets. We also
use precision RVs to improve mass and radius constraints on two other
systems with similar architectures, Kepler-25 and Kepler-68. In Kepler-68
we propose a second exterior giant planet candidate. Finally, we consider
the implications of these systems for planet formation models, particularly
that the moderate eccentricity in Kepler-65's exterior giant planet did
not disrupt its inner system.
Description:
The RV data for this work were collected using the High Resolution
Echelle Spectrometer (HIRES) at the Keck Observatory from 2010 April
to 2017 September. The setup used for the RV observations was the same
as used by the California Planet Search (CPS; Howard et al.
2010ApJ...721.1467H 2010ApJ...721.1467H), with a resolving power of R∼60000 between
wavelengths 3600 and 8000 Å (Marcy et al. 2008PhST..130a4001M 2008PhST..130a4001M;
2014, J/ApJS/210/20).
Objects:
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RA (ICRS) DE Designation(s) (Period)
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19 06 33.21 +39 29 16.4 Kepler-25 = KOI-244 (P=6.238297)
19 14 45.29 +41 09 04.2 Kepler-65 = KOI-85 (P=2.1549209)
19 24 07.77 +49 02 24.9 Kepler-68 = KOI-246 (P=5.3988)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 28 71 Kepler-25 HIRES RVs
table8.dat 28 70 Kepler-65 HIRES RVs
table9.dat 28 82 Kepler-68 HIRES RVs
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See also:
J/MNRAS/421/2342 : 4 Kepler systems transit timing observations
(Steffen+, 2012)
J/ApJ/783/4 : Properties of Kepler multi-planet candidate systems
(Wang+, 2014)
J/ApJ/784/45 : Kepler's multiple planet candidates. III. (Rowe+, 2014)
J/ApJ/787/80 : 139 Kepler planets transit time variations (Hadden+, 2014)
J/ApJS/210/20 : Small Kepler planets radial velocities (Marcy+, 2014)
J/ApJ/813/130 : Kepler multiple transiting planet systems (Wang+, 2015)
J/AJ/157/52 : Radial velocity observations in super-Earth systems
(Bryan+, 2019)
Byte-by-byte Description of file: table7.dat table8.dat table9.dat
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Bytes Format Units Label Explanations
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1- 9 F9.4 d BJD [413.082/3427.765] Barycentric Julian Date
(BJD-2454900)
11- 16 F6.2 m/s RV [-26.03/31.7] Radial velocity
18- 21 F4.2 m/s e_RV [1.12/4.43] 1σ RV uncertainty
23- 28 F6.4 --- Sval [0.096/0.1584] S-value activity indicator
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 09-Jul-2019