J/ApJ/719/1293 High precision orbits of 5 SB2 stars (Konacki+, 2010)
High-precision orbital and physical parameters of double-lined spectroscopic
binary stars - HD78418, HD123999, HD160922, HD200077, and HD210027.
Konacki M., Muterspaugh M.W., Kulkarni S.R., Helminiak K.G.
<Astrophys. J., 719, 1293-1314 (2010)>
=2010ApJ...719.1293K 2010ApJ...719.1293K
ADC_Keywords: Binaries, spectroscopic ; Radial velocities ; Surveys
Keywords: binaries: spectroscopic - stars: fundamental parameters -
stars: individual (HD78418, HD123999, HD160922, HD200077, and
HD210027) - techniques: radial velocities
Abstract:
We present high-precision radial velocities (RVs) of double-lined
spectroscopic binary stars HD78418, HD123999, HD160922, HD200077, and
HD210027. They were obtained based on the high-resolution echelle
spectra collected with the Keck I/HIRES, Shane/CAT/Hamspec, and
TNG/Sarge telescopes/spectrographs over the years 2003-2008 as part of
the TATOOINE search for circumbinary planets. The RVs were computed
using our novel iodine cell technique for double-line binary stars,
which relies on tomographically disentangled spectra of the components
of the binaries. The precision of the RVs is of the order of 1-10m/s,
and to properly model such measurements one needs to account for the
light-time effect within the binary's orbit, relativistic effects, and
RV variations due to tidal distortions of the components of the
binaries. With such proper modeling, our RVs combined with the
archival visibility measurements from the Palomar Testbed
Interferometer (PTI) allow us to derive very precise
spectroscopic/astrometric orbital and physical parameters of the
binaries.
Description:
We present our precision RV data sets for five targets HD78418,
HD123999, HD160922, HD200077, and HD210027 from our ongoing TATOOINE
(The Attempt To Observe Outer-planets In Non-single-stellar
Environments) RV program to search for circumbinary planets. The
TATOOINE survey was initiated in mid 2003 with the 10m Keck I and its
Hires spectrograph; the sample was also monitored from mid 2006 until
mid 2007 with the 3.6m Telescopio Nazionale Galileo (TNG) and its
Sarg spectrograph; since fall 2006, the TATOOINE project has been
collecting velocity measurements at Lick Observatory using the 3m
Shane and 0.6m Coude Auxiliary Telescopes (CATs) and the Hamilton
Spectrograph. See Konacki et al., 2009ApJ...704..513K 2009ApJ...704..513K, for preliminary
results and a description of the survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 94 164 Radial velocities of HD78418, HD123999, HD160922,
HD200077 and HD210027
table4.dat 199 5 Best-fit orbital solutions for HD78418, HD123999,
HD160922, HD200077, and HD210027
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See also:
B/sb9 : SB9: 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2011)
J/A+A/450/681 : Companions to close spectroscopic binaries (Tokovinin+, 2006)
J/A+A/427/313 : Radial velocities of evolved stars. III. (De Medeiros+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
10- 21 F12.6 d MJD Observation date (JD-2400000.5)
23- 31 F9.5 km/s RV1 Primary radial velocity
33- 39 F7.5 km/s e_RV1 Total error in RV1
41- 48 F8.5 km/s (O-C)1 Primary radial velocity (O-C) residual
50- 56 F7.5 km/s ieRV1 Internal error in RV1
58- 66 F9.5 km/s RV2 Secondary radial velocity
68- 74 F7.5 km/s e_RV2 Total error in RV2
76- 83 F8.5 km/s (O-C)2 Secondary radial velocity (O-C) residual
85- 91 F7.5 km/s ieRV2 Internal error in RV2
93- 94 A2 --- Inst Spectrograph used (1)
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Note (1): Spectrograph as follows:
HN = Keck I/Hires with the upgraded detector;
HO = Keck I/Hires with the old detector;
S = TNG/Sarg;
H = Shane/CAT/Hamspec.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
10- 16 F7.4 mas smaj Apparent semimajor axis
18- 23 F6.4 mas e_smaj 1σ error on smaj
25- 35 F11.7 d Per Period
37- 45 F9.7 d e_Per 1σ error on Per
47- 57 F11.5 d Tp Time of periastron (TDB-2400000.5)
59- 65 F7.5 d e_Tp 1σ error on Tp
67- 74 F8.6 --- ecc Orbit eccentricity
76- 83 F8.6 --- e_ecc 1σ error on ecc
85- 91 F7.3 deg Lp Longitude of the periastron (ω)
93- 97 F5.3 deg e_Lp 1σ error on Lp
99-105 F7.3 deg Ln Longitude of the ascending node (Ω)
107-111 F5.3 deg e_Ln 1σ error on Ln
113-119 F7.3 deg inc Orbit inclination
121-125 F5.3 deg e_inc 1σ error on inc
127-132 F6.4 mag dKmag K-band magnitude difference
134-139 F6.4 mag e_dKmag 1σ error on dKmag
141-146 F6.4 mag dHmag ? H-band magnitude difference
148-153 F6.4 mag e_dHmag ? 1σ error on dHmag
155-161 F7.4 km/s K1 Velocity amplitude of the primary
163-168 F6.4 km/s e_K1 1σ error on K1
170-176 F7.4 km/s K2 Velocity amplitude of the secondary
178-183 F6.4 km/s e_K2 1σ error on K2
185-192 F8.4 km/s Vr Gamma velocity
194-199 F6.4 km/s e_Vr 1σ error on Vr
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 19-Jun-2012