2021AJ....161...86D

Query : 2021AJ....161...86D

2021AJ....161...86D - Astron. J., 161, 86-86 (2021/February-0)

Two planets straddling the habitable zone of the nearby K dwarf Gl 414A.

DEDRICK C.M., FULTON B.J., KNUTSON H.A., HOWARD A.W., BEATTY T.G., CARGILE P.A., GAUDI B.S., HIRSCH L.A., KUHN R.B., LUND M.B., JAMES D.J., KOSIAREK M.R., PEPPER J., PETIGURA E.A., RODRIGUEZ J.E., STASSUN K.G. and STEVENS D.J.

Abstract (from CDS):

We present the discovery of two planets orbiting the nearby (D = 11.9 pc) K7 dwarf Gl 414A. Gl 414A b is a sub-Neptune mass planet with Mbsinib=7.60–2.19+2.44M⊕ and a semimajor axis of 0.23 ± 0.01 au. Gl 414A c is a sub-Saturn mass planet with Mcsinic=53.83–8.58+9.18M⊕ and a semimajor axis of 1.43 ± 0.06 au. We jointly analyzed radial velocity data from Keck/HIRES and the Automated Planet Finder at Lick Observatory, as well as photometric data from KELT, to detect the two planets and two additional signals related to the rotationally modulated activity and the long-term magnetic activity cycle of the star. The outer planet in this system may be a potential candidate for future direct-imaging missions.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Exoplanets - Radial velocity - Gaussian Processes regression - K dwarf stars - Exoplanet systems

VizieR on-line data: <Available at CDS (J/AJ/161/86): table1.dat>

Simbad objects: 13

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Number of rows : 13
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 V* V1298 Tau TT* 04 05 19.5909996648 +20 09 25.563233736   11.11 10.12 9.57   K1 194 0
2 HD 37605 PM* 05 40 01.7283246192 +06 03 38.072512008   9.52   8.1   K0 125 1
3 HD 74156 PM* 08 42 25.1219511432 +04 34 41.145751740       7.2   G1V 247 2
4 HD 97101B PM* 11 11 02.5374902488 +30 26 41.311142783   12.39 9.983 8.99 7.83 M2V 148 0
5 HD 97101c Pl 11 11 05.1719556954 +30 26 45.663217130           ~ 4 0
6 HD 97101 PM* 11 11 05.1719556954 +30 26 45.663217130   9.67   8.691   K7V 158 1
7 HD 97101b Pl 11 11 05.1719556954 +30 26 45.663217130           ~ 6 0
8 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2417 1
9 HD 147018 PM* 16 23 00.1478804220 -61 41 19.559913914   9.07 8.30     G8/K0V 79 1
10 HD 163607 PM* 17 53 40.4946041184 +56 23 31.040169720   8.762 7.979 7.80   G5IV 88 1
11 HD 168443 PM* 18 20 03.9332862096 -09 35 44.614653900   7.62 6.92     G6V 334 1
12 Kepler-432 RG* 19 33 07.7290058280 +48 17 09.147604308   13.485 12.464 12.203   G5 98 0
13 Kepler-419 EB* 19 41 40.2991189536 +51 11 05.168339880   13.498 13.036 13.088   ~ 98 1

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