J/A+A/646/A131 Four Jovian planets RV and activity indexes (Jones+, 2021)
Four Jovian planets around low-luminosity giant stars observed by the EXPRESS
and PPPS.
Jones M.I., Wittenmyer R., Aguilera-Gomez C., Soto M.G., Torres P.,
Trifonov T., Jenkins J.S., Zapata A., Sarkis P., Zakhozhay O., Brahm R.,
Ramirez R., Santana F., Vines J.I., Diaz M.R., Vuvckovic M., Pantoja B.
<Astron. Astrophys. 646, A131 (2021)>
=2021A&A...646A.131J 2021A&A...646A.131J (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Radial velocities
Keywords: asteroseismology - techniques: radial velocities -
planets and satellites: detection - planets and satellites: formation
Abstract:
We report the discovery of planetary companions orbiting four
low-luminosity giant stars with M* between 1.04 and 1.39M☉. All
four host stars have been independently observed by the EXoPlanets
aRound Evolved StarS (EXPRESS) program and the Pan-Pacific Planet
Search (PPPS). The companion signals were revealed by multi-epoch
precision radial velocities obtained in nearly a decade. The planetary
companions exhibit orbital periods between ∼1.2 and 7.1 years, minimum
masses of mp*sini∼1.8-3.7MJup, and eccentricities between 0.08 and
0.42. With these four new systems, we have detected planetary
companions to 11 out of the 37 giant stars that are common targets in
the EXPRESS and PPPS. After excluding four compact binaries from the
common sample, we obtained a fraction of giant planets
(mp∼1-2MJup) orbiting within 5AU from their parent star of
f=33.3+9.0-7.1%. This fraction is slightly higher than but
consistent at the 1σ level with previous results obtained by
different radial velocity surveys. Finally, this value is
substantially higher than the fraction predicted by planet formation
models of gas giants around stars more massive than the Sun.
Description:
Here we present the radial velocities, bisectors and activity indexes
for all four host stars presented in this paper.
Objects:
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RA (2000) DE Designation(s)
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11 36 48.18 -37 02 20.7 HIP 56640 = HD 100939
15 20 41.42 -25 59 25.4 HIP 75092 = HD 136295
18 33 33.39 -50 12 41.7 HIP 90988 = HD 170707
23 16 49.70 -21 12 11.1 HIP 114933 = HD 219553
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
sources.dat 76 4 List of studied sources
tablea1.dat 36 27 Radial velocities of HIP56640
tablea2.dat 36 41 Radial velocities of HIP75092
tablea3.dat 36 42 Radial velocities of HIP90988
tablea4.dat 36 42 Radial velocities of HIP114933
tablea5.dat 63 22 Bisectors and activity indexes of HIP56640
tablea6.dat 63 23 Bisectors and activity indexes of HIP75092
tablea7.dat 63 25 Bisectors and activity indexes of HIP90988
tablea8.dat 63 20 Bisectors and activity indexes of HIP144933
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Byte-by-byte Description of file: sources.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 13 I2 h RAh Simbad right ascension (J2000)
15- 16 I2 min RAm Simbad right ascension (J2000)
18- 22 F5.2 s RAs Simbad right ascension (J2000)
24 A1 --- DE- Simbad declination sign (J2000)
25- 26 I2 deg DEd Simbad declination (J2000)
28- 29 I2 arcmin DEm Simbad declination (J2000)
31- 34 F4.1 arcsec DEs Simbad declination (J2000)
36- 40 A5 --- SpType Spectral type (from table1)
42- 47 F6.1 d Per Period (from table2)
49- 52 F4.1 d e_Per Period uncertainty (from table2)
54- 64 A11 --- RVdata Name of the table with RV data
66- 76 A11 --- Inddata Name of the table with bisectors and activity
indexes
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Byte-by-byte Description of file: tablea[1234].dat
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Bytes Format Units Label Explanations
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1- 10 F10.5 d BJD Barycentric Julian Date (BJD-2450000)
14- 19 F6.1 m/s RV Relative radial velocity
23- 27 F5.1 m/s e_RV 1-sigma internal uncertainty in RV
31- 36 A6 --- Inst Instrument (FEROS, CHIRON, UCLES)
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Byte-by-byte Description of file: tablea[5678].dat
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Bytes Format Units Label Explanations
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1- 10 F10.5 d BJD Barycentric Julian Date (BJD-2450000)
14- 19 F6.1 m/s BVS Bisector velocity Span
23- 27 F5.1 m/s e_BVS 1-sigma internal uncertainty in BVS
31- 36 F6.4 --- Sindex S-index
40- 45 F6.4 --- e_Sindex 1-sigma internal uncertainty in S-index
49- 54 F6.4 --- Haindex Halpha index
58- 63 F6.4 --- e_Haindex 1-sigma internal uncertainty in Halpha index
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Acknowledgements:
Matias Jones, mjones(at)eso.org
(End) Patricia Vannier [CDS] 12-Jan-2021