J/A+A/678/A90 HD99492, HD147379 and HD190007 HARPS-N data (Stalport+, 2023)
A review of planetary systems around HD99492, HD147379 and HD190007 with
HARPS-N.
Stalport M., Cretignier M., Udry S., Anna John A., Wilson T.G.,
Delisle J.-B., Bonomo A.S., Buchhave L.A., Charbonneau D., Dalal S.,
Damasso M., Di Fabrizio L., Dumusque X., Fiorenzano A., Harutyunyan A.,
Haywood R.D., Latham D.W., Lopez-Morales M., Lorenzi V., Lovis C.,
Malavolta L., Molinari E., Mortier A., Pedani M., Pepe F., Pinamonti M.,
Poretti E., Rice K., Sozzetti A.
<Astron. Astrophys. 678, A90 (2023)>
=2023A&A...678A..90S 2023A&A...678A..90S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Radial velocities ;
Optical
Keywords: planets and satellites: detection - techniques: radial velocities -
planetary systems - stars: activity - stars: individual: HD99492 -
stars: individual: HD147379
Abstract:
The Rocky Planet Search (RPS) program is dedicated to a blind radial
velocity (RV) search of planets around bright stars in the Northern
hemisphere, using the high-resolution echelle spectrograph HARPS-N
installed on the Telescopio Nazionale Galileo (TNG).
The goal of this work is to revise and update the properties of three
planetary systems by analysing the HARPS-N data with state-of-the-art
stellar activity mitigation tools. The stars considered are HD 99492
(83 Leo B), HD 147379 (Gl617 A) and HD 190007. Methods. We employ a
systematic process of data modelling, that we selected from the
comparison of different approaches. We use YARARA to remove
instrumental systematics from the RV, and then use SPLEAF to further
mitigate the stellar noise with a multidimensional correlated noise
model. We also search for transit features in the Transiting
Exoplanets Survey Satellite (TESS) data of these stars.
We report on the discovery of a new planet around HD99492, namely
HD99492 c, with an orbital period of 95.2 days and a minimum mass of
msini=17.9M⊕, and refine the parameters of HD99492 b. We also
update and refine the Keplerian solutions for the planets around
HD 147379 and HD 190007, but do not detect additional planetary
signals. We discard the transiting geometry for the planets, but
stress that TESS did not exhaustively cover all the orbital phases.
The addition of the HARPS-N data, and the use of advanced data
analysis tools, has allowed us to present a more precise view of these
three planetary systems. It demonstrates once again the importance of
long observational efforts such as the RPS program. Added to the RV
exoplanet sample, these planets populate two apparently distinct
populations revealed by a bimodality in the planets' minimum mass
distribution. The separation is located between 30 and 50M⊕.
Description:
Radial velocity (RV) measurements of HD99492, HD147379 and HD190007
obtained with the HARPS-N spectrograph installed at the TNG at Roque
de los Muchachos observatory. The datasets of HD99492 and HD147379
presented here were derived with YARARA (Cretignier et al.,
2021A&A...653A..43C 2021A&A...653A..43C), with stellar activity component injected back.
They are denoted as the YARARA-V1 datasets in the paper. The dataset
of HD190007 was derived with the DRS (Dumusque et al.,
2021A&A...648A.103D 2021A&A...648A.103D). For each star, the datasets contain the
nightly-binned RV and several stellar activity indicators.
Objects:
--------------------------------------------------------------------
RA (2000) DE Designation(s) (File)
--------------------------------------------------------------------
11 26 46.3 +03 00 22.8 HD 99492 = 83 Leo B (hd99492.dat)
16 16 42.7 +67 14 19.8 HD 147379 = Gl 617 A (hd147379.dat)
20 02 47.0 +03 19 34.3 HD 190007 = BD+02 4076 (hd190007.dat)
--------------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
hd99492.dat 104 176 HD 99492 radial velocity measurements
hd147379.dat 104 146 HD 147379 radial velocity measurements
hd190007.dat 110 37 HD 190007 radial velocity measurements
--------------------------------------------------------------------------------
Byte-by-byte Description of file: hd99492.dat hd147379.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.5 d BJD Barycentric Julian Date of observation
(BJD-2400000)
13- 18 F6.2 m/s RV Radial velocity (YARARA-V1)
20- 23 F4.2 m/s e_RV Radial velocity uncertainty
25- 34 F10.7 --- SMW S-index
36- 44 F9.7 --- e_SMW S-index uncertainty
46- 54 F9.7 --- FWHM Full width at half maximum of the
cross-correlation function
56- 64 F9.7 --- e_FWHM FWHM uncertainty
66- 74 F9.7 --- Cont Contrast
76- 84 F9.7 --- e_Cont Contrast uncertainty
86- 94 F9.7 --- Ha H-alpha
96-104 F9.7 --- e_Ha H-alpha uncertainty
--------------------------------------------------------------------------------
Byte-by-byte Description of file: hd190007.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.5 d BJD Barycentric Julian Date of observation
(BJD-2400000)
13- 21 F9.2 m/s RV Radial velocity (DRS)
23- 26 F4.2 m/s e_RV Radial velocity uncertainty
28- 36 F9.7 --- SMW S-index
38- 46 F9.7 --- e_SMW S-index uncertainty
48- 59 F12.7 --- FWHM FWHM
61- 69 F9.7 --- e_FWHM FWHM uncertainty
71- 80 F10.7 --- Cont Contrast
82- 90 F9.7 --- e_Cont Contrast uncertainty
92-100 F9.7 --- Ha H-alpha
102-110 F9.7 --- e_Ha H-alpha uncertainty
--------------------------------------------------------------------------------
Acknowledgements:
Manu Stalport, manu.stalport(at)uliege.be
(End) Patricia Vannier [CDS] 09-Aug-2023