J/A+A/669/A12 HARPS Sco-Cen + SOPHIE YNS and HARPS YNS (Grandjean+ 2023)
HARPS radial velocity search for planets in the Scorpius-Centaurus association.
A combination with the HARPS and SOPHIE young nearby stars (YNS) survey.
Grandjean A., Larange A.-M., Meunier N., Chauvin G., Borgniet S.,
Desidera S., Galland F., Kiefer F., Messina S., Iglesias D., Nicholson B.,
Pantoja B., Rubini P., Sedaghati E., Sterzik M., Zicher N.
<Astron. Astrophys. 669, A12 (2023)>
=2023A&A...669A..12G 2023A&A...669A..12G (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Stars, early-type ; Stars, late-type ;
Radial velocities ; Optical
Keywords: techniques: radial velocities - stars: activity -
binaries: spectroscopic - planetary systems - starspots -
stars: variables: general
Abstract:
The Scorpius-Centaurus (Sco-Cen) young and nearby massive star-forming
region is particularly well suited for extrasolar planet searches with
both direct imaging and radial velocity (RV) techniques. The RV
search, however, is challenging, as the stars are faster rotators on
average than their older stellar counterparts of similar spectral
types. Moreover, the RV time series show strong signatures of stellar
variability (spots and faculae) and/or stellar pulsations.
Our aim is to search for giant planets (GPs) and brown dwarfs at short
orbital distances around star members of the Sco-Cen association. We
also aim at using these data together with others available on young
stars to estimate the GP occurrence rate for young stars for periods
of up to 1000 days.
We used the HARPS spectrograph on the 3.6m telescope at the La Silla
Observatory to monitor 88 A-F Sco-Cen stars. To improve our statistics
and analysis, we combined this survey with two previous surveys that
focused on young nearby stars (YNS) to compute companion occurrence
rates from a sample of 176 young A-M stars. We report the discovery of
a massive hot-Jupiter candidate around HD 145467, together with the
discovery of one probable short-period (P<10-days) brown dwarf around
HD 149790. In addition, we confirm the binary nature of eight
single-line binaries: HD 108857, HD 108904, HD 111102, HD 114319,
HD 121176, HD 126488, HD 126838, and HD 133574. From our sample, we
obtain a GP (1<mc<13MJup) occurrence rate of 0.7+1.60.2% for
periods between 1 and 1000 days and a brown dwarf (13<mc<80MJup)
occurrence rate of 0.6+1.40.2%, in the same period range. In
addition, we report a possible lack of close (1<P<1000]days) GPs
around young F-K stars compared to their older counterparts, with a
confidence level of 95%.
Description:
The HARPS Sco-Cen catalogue is based on a survey of ESO HARPS on the stars
of the Scorpius Centurus association and contains 69 A to K type stars.
The SOPHIE Young Nearby Stars catalogue (SOPHIE YNS, Grandjean et al.,
2021A&A...650A..39G 2021A&A...650A..39G, Cat. J/A+A/650/A39) is based on a survey of CNRS
SOPHIE on young stars and contains 54 A to M type stars.
The HARPS Young Nearby Stars catalogue (HARPS YNS, Grandjean et al.,
2020A&A...633A..44G 2020A&A...633A..44G, Cat. J/A+A/633/A44) is based on a survey of ESO
HARPS on young stars and contains 89 A to M type stars. Here is
presented an updated version of the SOPHIE YNS and HARPS YNS Tables.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
sample1.dat 38 69 HARPS Sco-Cen list of targets and positions
tablea1.dat 348 69 Stellar characteristics of the HARPS
Sco-Cen survey
tablea2.dat 108 69 Results of the HARPS Sco-Cen survey
sample2.dat 38 54 SOPHIE YNS list of targets and positions
tablea3.dat 294 54 Stellar characteristics of the SOPHIE YNS survey
tablea4.dat 169 54 Results of the SOPHIE YNS survey
sample3.dat 38 89 HARPS YNS list of targets and positions
tablea5.dat 363 89 Stellar characteristics of the HARPS YNS survey
tablea6.dat 169 89 Results of the HARPS YNS survey
--------------------------------------------------------------------------------
See also:
J/A+A/633/A44 : HARPS Young Nearby Stars - YNS (Grandjean+, 2020)
J/A+A/650/A39 : SOPHIE and HARPS Young Nearby Stars - YNS (Grandjean+ 2021)
Byte-by-byte Description of file: sample1.dat sample2.dat sample3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Source name
12- 13 I2 h RAh Right Ascension (J2000)
15- 16 I2 min RAm Right Ascension (J2000)
18- 24 F7.4 s RAs Right Ascension (J2000)
26 A1 --- DE- Declination sign (J2000)
27- 28 I2 deg DEd Declination (J2000)
30- 31 I2 arcmin DEm Declination (J2000)
33- 38 F6.3 arcsec DEs Declination (J2000)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Name (HD/PDS)
10- 14 I5 --- HIP ? Hipparcos number
16 A1 --- Inc [Y/N] Inclusion flag (1)
18- 23 A6 --- SpType Spectral type
25- 30 F6.3 mag B-V B-V colour index
32- 38 F7.4 mas plx Absolute paralax
40- 45 F6.4 mas e_plx Standard paralax error
47- 53 F7.3 mas/yr pmRA Proper motion in right ascension
55- 59 F5.3 mas/yr e_pmRA Proper motion in right ascension error
61- 67 F7.3 mas/yr pmDE proper motion in declination
69- 73 F5.3 mas/yr e_pmDE Proper motion in declination error
75- 93 A19 --- r_plx Paralax and proper motion source
95- 98 F4.2 Msun Mass Stellar mass
100-103 F4.2 Msun e_Mass ? Mass negative error
105-108 F4.2 Msun E_Mass ? Mass positive error
110-165 A56 --- r_Mass Link to the Mass reference
167-168 I2 Myr Age Age
170 I1 Myr e_Age ? Age negative error
172 I1 Myr E_Age ? Age positive error
174-226 A53 --- r_Age Link to the age reference
228-232 F5.1 km/s vsini Rotational velocity
234 A1 --- IR [yn-] IR excess flag (2)
236-290 A55 --- r_IR Link to the IR excess reference
292 A1 --- D [yn-] Imaged disc flag (3)
294-348 A55 --- r_D Link to the disc reference
--------------------------------------------------------------------------------
Note (1): Inclusion Flag as follows:
Y = Star included in the statistical analysis
N = Star excluded from the statistical analysis
Note (2): IR excess flags as follows:
y = Report of an IR excess
n = Report of an absence of IR excess
- = No report found about IR exess
Note (3): Disc flags as follows:
y = Report of disc in imagery
n = Report of absence of disc in imagery
- = No report found about disc
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Name (HD/PDS)
10- 14 I5 --- HIP ? Hipparcos number
16 A1 --- Inc [Y/N] Inclusion flag (1)
18- 23 A6 --- SpType Spectral type
25- 28 I4 d TBL Time baseline
30- 32 I3 --- Nm Total number of computed spectra
34- 40 F7.1 m/s RVA RV amplitude
42- 47 F6.1 m/s RVrms RV rms
49- 53 F5.1 m/s e_RVmean RV mean uncertainty
55- 61 F7.1 m/s BVS Bisector velocity span
63- 67 F5.1 m/s BVSrms Bisector velocity span rms
69- 75 F7.1 m/s e_BVSmean Bisector velocity span mean uncertainty
77- 81 F5.2 --- RV-BVS-corr ? RV-BVS correlation factor
83- 87 F5.1 km/s FWHMmean Mean FWHM
89- 94 F6.3 --- logR'HKmean Mean logR'HK
96-100 F5.3 --- s_logR'HK logR'HK uncertainty standard deviation
102 A1 --- V [APT] Source of stellar Jitter (2)
104 A1 --- T Presence of a long-term trend
106-108 A3 --- B Nature of the companion (3)
--------------------------------------------------------------------------------
Note (1): Inclusion Flag as follows:
Y = Star included in the statistical analysis
N = Star excluded from the statistical analysis
Note (2): Source of stellar Jitter as follows:
A = Stellar activity (spots)
P = Pulsations
- = Not determined
Note (3): Nature of the companion as follows:
C = sub-stellar companion
Cc = sub-stellar companion candidate
SB1 = Single-line spectroscopic binary
SB2 = Double-line spectroscopic binary
- = No companion detected
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Name (HD/BD/CD)
12- 17 I6 --- HIP ? Hipparcos number
19 A1 --- Inc [Y/N] Inclusion flag (1)
21- 25 A5 --- SpType Spectral type
27- 32 F6.3 mag B-V B-V colour index
34- 37 F4.2 Msun Mass Stellar mass found in literature
39- 42 F4.2 Msun e_Mass ? Mass negative error
44- 47 F4.2 Msun E_Mass ? Mass positive error
49-103 A55 --- r_Mass Link to the Mass reference
105-108 I4 Myr Age ? Age found in literature
110-113 I4 Myr e_Age ? Age negative error
115-118 I4 Myr E_Age ? Age positive error
120-175 A56 --- r_Age Link to the age reference
177-180 F4.1 km/s vsini Rotational velocity
182 A1 --- IR [yn-] IR excess flag (2)
184-238 A55 --- r_IR Link to the IR excess reference
239 A1 --- D [yn-] Imaged disc flag (3)
241-294 A54 --- r_D Link to the disc reference
--------------------------------------------------------------------------------
Note (1): Inclusion Flag as follows:
Y = Star included in the statistical analysis
N = Star excluded from the statistical analysis
Note (2): IR excess flags as follows:
y = Report of an IR excess
n = Report of an absence of IR excess
- = No report found about IR exess
Note (3): Disc flags as follows:
y = Report of disc in imagery
n = Report of absence of disc in imagery
- = No report found about disc
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Name (HD/BD/CD)
12- 17 I6 --- HIP ? Hipparcos number
19 A1 --- Inc [Y/N] Inclusion flag (1)
21- 25 A5 --- SpType Spectral type
27- 30 I4 d TBL Time baseline
32- 34 I3 --- Nm Total number of computed spectra
36- 42 F7.1 m/s RVA RV amplitude
44- 49 F6.1 m/s RVrms RV rms
51- 55 F5.1 m/s e_RVmean RV mean uncertainty
57- 65 F9.1 m/s BVS ? Bisector velocity span
67- 71 F5.1 m/s BVSrms ? Bisector velocity span rms
73- 81 F9.1 m/s e_BVSmean ? Bisector velocity span mean uncertainty
83- 87 F5.2 --- RV-BVS-corr ? RV-BVS correlation factor
89- 93 F5.1 km/s FWHMmean Mean FWHM
95-100 F6.3 --- logR'HKmean ? Mean logR'HK
102-105 F4.2 --- s_logR'HK ? logR'HK uncertainty standard deviation
107 A1 --- V [AP-] Source of stellar Jitter (2)
109 A1 --- T Presence of a long-term trend
111-113 A3 --- B Nature of the companion (3)
115-169 A55 --- C-source Link to the companion reference if any
--------------------------------------------------------------------------------
Note (1): Inclusion Flag as follows:
Y = Star included in the statistical analysis
N = Star excluded from the statistical analysis
Note (2): Source of stellar Jitter as follows:
A = Stellar activity (spots)
P = Pulsations
- = Not determined
Note (3): Nature of the companion as follows:
C = sub-stellar companion
SB1 = Single-line spectroscopic binary
SB2 = Double-line spectroscopic binary
- = No companion detected
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Name (HD/BD/CD)
12- 17 I6 --- HIP ? Hipparcos number
19 A1 --- Inc [Y/N] Inclusion flag (1)
21- 25 A5 --- SpType Spectral type
27- 32 F6.3 mag B-V B-V colour index
34- 38 F5.3 Msun Mass Stellar mass found in literature
40- 43 F4.2 Msun e_Mass ? Mass negative error
45- 48 F4.2 Msun E_Mass ? Mass positive error
50-104 A55 --- r_Mass Link to the Mass reference
105-108 I4 Myr Age Age found in literature
110-113 I4 Myr e_Age ? Age negative error
115-118 I4 Myr E_Age ? Age positive error
120-172 A53 --- r_Age Link to the age reference
174-178 F5.1 km/s vsini Rotational velocity
180-186 F7.4 d Prot ? Rotation period found in literature
188-193 F6.4 d e_Prot ? Rotation period uncertainty
194-247 A54 --- r_Prot ? Rotation period reference
249 A1 --- IR [yn-] IR excess flag (2)
251-304 A54 --- r_IR Link to the IR excess reference
306 A1 --- D Imaged disc flag (3)
308-363 A56 --- r_D Link to the disc reference
--------------------------------------------------------------------------------
Note (1): Inclusion Flag
Y = Star included in the statistical analysis
N = Star excluded from the statistical analysis
Note (2): IR excess flags
y = Report of an IR excess
n = Report of an absence of IR excess
- = No report found about IR exess
Note (3): Disc flags
y = Report of disc in imagery
n = Report of absence of disc in imagery
- = No report found about disc
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Name (HD/BD/CD)
12- 17 I6 --- HIP ? Hipparcos number
19 A1 --- Inc [Y/N] Inclusion flag (1)
21- 25 A5 --- SpType Spectral type
27- 30 I4 d TBL Time baseline
32- 35 I4 --- Nm Total number of computed spectra
37- 43 F7.1 m/s RVA RV amplitude
45- 50 F6.1 m/s RVrms RV rms
52- 57 F6.1 m/s e_RVmean RV mean uncertainty
59- 66 F8.1 m/s BVS ? Bisector velocity span
68- 72 F5.1 m/s BVSrms ? Bisector velocity span rms
74- 80 F7.1 m/s e_BVSmean ? Bisector velocity span mean uncertainty
82- 86 F5.2 --- RV-BVS-corr ? RV-BVS correlation factor
88- 92 F5.1 km/s FWHMmean ? Mean FWHM
94- 99 F6.3 --- logR'HKmean ? Mean logR'HK
101-105 F5.3 --- s_logR'HK ? logR'HK uncertainty standard deviation
107 A1 --- V [AP-] Source of stellar Jitter (2)
109 A1 --- T Presence of a long-term trend
111-113 A3 --- B Nature of the companion (3)
115-169 A55 --- C-source Link to the companion reference if any
--------------------------------------------------------------------------------
Note (1): Inclusion Flag
Y = Star included in the statistical analysis
N = Star excluded from the statistical analysis
Note (2): Source of stellar Jitter
A = Stellar activity (spots)
P = Pulsations
- = Not determined
Note (3): Nature of the companion
C = sub-stellar companion
SB1 = Single-line spectroscopic binary
SB2 = Double-line spectroscopic binary
- = No companion detected
--------------------------------------------------------------------------------
Acknowledgements:
Antoine Grandjean, antoine.grandjean1(at)laposte.net
(End) A. Grandjean [Univ. Grenoble-Alpes], P. Vannier [CDS] 05-Dec-2022