J/AJ/161/235 Radial velocity of TOI-201 (Hobson+, 2021)
A transiting warm giant planet around the young active star TOI-201.
Hobson M.J., Brahm R., Jordan A., Espinoza N., Kossakowski D., Henning T.,
Rojas F., Schlecker M., Sarkis P., Trifonov T., Thorngren D., Binnenfeld A.,
Shahaf S., Zucker S., Ricker G.R., Latham D.W., Seager S., Winn J.N.,
Jenkins J.M., Addison B., Bouchy F., Bowler B.P., Briegal J.T., Bryant E.M.,
Collins K.A., Daylan T., Grieves N., Horner J., Huang C., Kane S.R.,
Kielkopf J., McLean B., Mengel M.W., Nielsen L.D., Okumura J., Jones M.,
Plavchan P., Shporer A., Smith A.M.S., Tilbrook R., Tinney C.G.,
Twicken J.D., Udry S., Unger N., West R., Wittenmyer R.A., Wohler B.,
Torres P., Wright D.J.
<Astron. J., 161, 235 (2021)>
=2021AJ....161..235H 2021AJ....161..235H
ADC_Keywords: Exoplanets; Stars, F-type; Radial velocities; Spectra, optical
Keywords: Exoplanet astronomy ; Exoplanet detection methods ;
Transit photometry ; Radial velocity
Abstract:
We present the confirmation of the eccentric warm giant planet
TOI-201b, first identified as a candidate in Transiting Exoplanet
Survey Satellite photometry (Sectors 1-8, 10-13, and 27-28) and
confirmed using ground-based photometry from Next Generation Transit
Survey and radial velocities from FEROS, HARPS, CORALIE, and
Minerva-Australis. TOI-201b orbits a young (0.87-0.49+0.46Gyr) and
bright (V=9.07mag) F-type star with a 52.9781day period. The planet
has a mass of 0.42-0.03+0.05MJ, a radius of
1.008-0.015+0.012RJ, and an orbital eccentricity of
0.28-0.09+0.06; it appears to still be undergoing fairly rapid
cooling, as expected given the youth of the host star. The star also
shows long-term variability in both the radial velocities and several
activity indicators, which we attribute to stellar activity. The
discovery and characterization of warm giant planets such as TOI-201b
are important for constraining formation and evolution theories for
giant planets.
Description:
We obtained 52 spectra with the FEROS spectrograph, which is mounted
on the MPG 2.2m telescope at La Silla Observatory and has a resolving
power of R=50000, between 2018 November 26 and 2020 March 8.
We obtained 39 spectra with the HARPS spectrograph, which is mounted
on the 3.6m telescope at La Silla Observatory, and has a resolving
power of R=120000. The spectra were obtained between 2018 December 11
and 2020 February 21, under Program IDs 0101.C-0510(D),
0102.C-0451(B), 0103.C-0442(A), and 0104.C-0413(A)
A total of 10 spectra of TOI-201 were obtained with the CORALIE
high-resolution spectrograph on the Swiss 1.2m Euler telescope at La
Silla Observatory, Chile, between 2018 November 12 and 2019 March 27.
We obtained 62 spectra of TOI-201 in the early days of
Minerva-Australis, with a single telescope, between 2019 January 2 and
April 15 (R=80000).
Objects:
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RA (2000) DE Designation(s) (Period)
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05 49 36.41 -54 54 38.6 TOI-201 = HD 39474 (P=52.9781d)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 110 52 Radial velocity and activity indices obtained from
the FEROS spectra
tablea2.dat 108 39 Radial velocity and activity indices obtained from
the HARPS spectra
tablea3.dat 72 10 Radial velocities obtained from the CORALIE spectra
tablea4.dat 24 62 Radial velocities obtained from the
Minerva-Australis spectra
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See also:
III/159 : Ca II H and K Measurements Made at MWO (Duncan+ 1991)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/A+A/495/959 : Radial velocity curve of HD 189733 (Boisse+, 2009)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/A+A/564/A125 : AGN Torus model comparison of AGN in the CDFS (Buchner+, 2014)
J/AJ/148/81 : APASS BVgri photometry of RAVE stars. I. Data (Munari+, 2014)
J/A+A/573/A124 : Kepler-117 (KOI-209) transit-timing variations (Bruno+, 2015)
J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (TESS) (Sullivan+, 2015)
J/ApJ/836/77 : Library of high-S/N optical spectra of FGKM stars (Yee+, 2017)
J/ApJS/239/2 : Simulated exoplanets from TESS list of targets (Barclay+,2018)
J/AJ/158/45 : TESS light curve & radial velocities for HD 1397 (Brahm+,2019)
J/ApJ/874/L31 : Giant planet bulk & atmosphere metallicities (Thorngren+,2019)
J/ApJS/250/20 : Rotation periods TESS objects of interest (TOIs) (Canto+,2020)
J/AJ/159/145 : RVs & opt. photometry of the host star TOI-677 (Jordan+, 2020)
J/AJ/159/19 : SOAR TESS survey. I. (Ziegler+, 2020)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 16 F16.8 d BJD [2458449/2458918] Barycentric Julian Date
18- 24 F7.4 km/s RVel [16.8/17] Radial Velocity
26- 31 F6.4 km/s e_RVel [0.008/0.03] Error on RVel
33- 37 F5.3 --- BIS [0.001/0.05] Bisector
39- 43 F5.3 --- e_BIS [0.007/0.02] Error on BIS
45- 51 F7.4 --- FWHM [15.5/15.9] Full width at half maximum
53- 55 I3 --- S/N [59/193] Signal-to-noise
57- 62 F6.4 --- Ha [0.1/0.12] Halpha
64- 69 F6.4 --- e_Ha [0.0009/0.004] Error on Ha
71- 76 F6.3 [-] [R'HK] [-4.83/-4.7] log(R'HK)
78- 82 F5.3 [-] e_[R'HK] [0.025/0.064] Error on [R'HK]
84- 89 F6.4 --- NaII [0.37/0.41] NaII abundance
91- 96 F6.4 --- e_NaII [0.002/0.007] Error on NaII
98-103 F6.4 --- HeI [0.48/0.51] HeI abundance
105-110 F6.4 --- e_HeI [0.002/0.009] Error on HeI
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 13 F13.8 d BJD [1464/1902] Barycentric Julian Date; BJD-2457000
15- 21 F7.4 km/s RVel [16.8/17] Radial Velocity
23- 28 F6.4 km/s e_RVel [0.002/0.04] Error on RVel
30- 34 F5.3 --- BIS [0.004/0.05] Bisector
36- 40 F5.3 --- e_BIS [0.002/0.03] Error on BIS
42- 48 F7.4 --- FWHM [14.2/14.5] Full width at half maximum
50- 52 I3 --- S/N [17/152] Signal-to-noise
54- 59 F6.4 --- Ha [0.08/0.11] Halpha
61- 66 F6.4 --- e_Ha [0.0004/0.006] Error on Ha
68- 73 F6.3 [-] [R'HK] [-5.03/-4.67]? log(R'HK)
75- 80 F6.4 [-] e_[R'HK] [0.02/0.5] Error on [R'HK]
82- 87 F6.4 --- NaII [0.009/0.43] NaII abundance
89- 94 F6.4 --- e_NaII [0.0009/0.49] Error on NaII
96-101 F6.4 --- HeI [0.009/0.51] HeI abundance
103-108 F6.4 --- e_HeI [0.001/0.004]? Error on HeI
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Byte-by-byte Description of file: tablea3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.6 d BJD [1462/1570] Barycentric Julian Date; BJD-2457000
13- 18 F6.3 km/s RVel [16.7/16.9] Radial Velocity
20- 24 F5.3 km/s e_RVel [0.01/0.02] Error on RVel
26- 33 F8.5 --- FWHM [13.9/14.1] ull width at half maximum
35- 40 F6.3 --- Contr [22.5/23] Contrast
42- 49 F8.5 --- BIS [-0.04/0.03] Bisector
51- 57 F7.5 --- Noise [0.009/0.02] Noise
59- 62 F4.1 --- S/N10 [9.3/19.2] Signal to noise
64- 67 F4.1 --- S/N50 [33.1/51.1] Signal to noise
69- 72 F4.1 --- S/N60 [34/53] Signal to noise
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Byte-by-byte Description of file: tablea4.dat
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Bytes Format Units Label Explanations
-------------------------------------------------------------------------------
1- 11 F11.6 d BJD [1486/1589] Barycentric Julian Date; BJD-2457000
13- 18 F6.3 km/s RVel [-0.12/0.06] Radial Velocity
20- 24 F5.3 km/s e_RVel [0.01/0.05] Error on RVel
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History:
From electronic version of the journal
(End) Prepared by Coralie Fix [CDS], 13-Aug-2021