J/AcA/73/291 28 stars multi-epoch radial velocities (Niedzielski+, 2023)
Planetary-Mass Companions to a Retired B star BD+37 3172 and a Retired F
Star BD+42 2315.
Niedzielski A., Jaros R., Paczuski A., Adamow M., Wolszczan A.,
Villaver E., Maciejewski G., Deka-Szymankiewicz B.
<Acta Astron. 73, 291 (2023)>
=2023AcA....73..291N 2023AcA....73..291N (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Radial velocities ;
Optical
Keywords: planetary systems - techniques: radial velocities -
stars: late type - binaries: spectroscopic
Abstract:
Radial velocity searches may lead to detection of exoplanets at large
orbital separations only if long-enough time-series of data are
available. Therefore publication of precise measurements collected in
the past is very valuable even if not successfully completed with a
definitive detection. Here we present 309 precise (σRV∼5-7m/s)
multi-epoch radial velocities for 28 stars observed with the
Hobby-Eberly Telescope and its High Resolution Spectrograph between
2004 and 2013. Based on the observations gathered we present a low
mass companion (mpsini=10.6MJ in 1887.76±0.01d, 4.65au orbit
with e=0.59±0.01 ) to a K giant BD+37 3172 (M=3.75±0.86 M☉),
and a planetary mass companion (mpsini=0.55MJ in 123.05±0.04d,
0.55 au orbit with e=0.73±0.03) to a K giant BD+42 2315
(M=1.38±0.30 M☉). We also present two preliminary detections
of new spectroscopic binaries: BD+56 2957 (K5) and HD 236555 (G5).
Description:
We identified two planetary-mass companions and two binary systems in
a sample of 28 stars for which we present precise multi-epoch radial
velocities.
In Table 2 we present 309 epochs of radial velocities collected for
the 28 targets presented in Table 1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 83 27 Summary of basic data on target stars
table2.dat 55 309 Multiepoch radial velocities and spectral
line bisectors for 28 target stars
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name TYCHO name (NNNN-NNNNN-1)
14- 23 A10 --- OName Other name
25- 28 I4 K Teff Effective temperature
30- 32 I3 K e_Teff Effective temperature error
34- 37 F4.2 [cm/s2] logg Surface gravity
39- 42 F4.2 [cm/s2] e_logg Surface gravity error
44- 48 F5.2 [-] [Fe/H] Metallicity
50- 53 F4.2 [-] e_[Fe/H] Metallicity error
55- 58 I4 d DeltaT Time span of observation
60- 61 I2 --- Nobs Number of available epochs of observation
63- 67 I5 m/s DeltaRV Observed amplitude in radial velocity
69- 72 F4.1 m/s sigmaRV Mean RV uncertainty
74- 78 F5.2 --- r Parson's correlation coefficient
between RV and BIS
80- 83 F4.2 --- p p-value for r
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name TYCHO name (NNNN-NNNNN-1)
14- 24 F11.5 d MJD Modified Julian day
26- 34 F9.2 m/s RV Radial velocity
36- 40 F5.2 m/s e_RV Radial velocity error
42- 48 F7.2 m/s BIS Spectral line bisector
50- 55 F6.2 m/s e_BIS Spectral line bisector error
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 26-Aug-2025