J/AJ/152/46 Spectroscopic orbits for 15 late-type stars (Willmarth+, 2016)
Spectroscopic orbits for 15 late-type stars.
Willmarth D.W., Fekel F.C., Abt H.A., Pourbaix D.
<Astron. J., 152, 46-46 (2016)>
=2016AJ....152...46W 2016AJ....152...46W (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, spectroscopic ; Stars, late-type ; Radial velocities ;
Rotational velocities
Keywords: binaries: spectroscopic - stars: fundamental parameters -
stars: late-type
Abstract:
Spectroscopic orbital elements are determined for 15 stars with
periods from 8 to 6528days with six orbits computed for the first
time. Improved astrometric orbits are computed for two stars and one
new orbit is derived. Visual orbits were previously determined for
four stars, four stars are members of multiple systems, and five stars
have Hipparcos "G" designations or have been resolved by speckle
interferometry. For the nine binaries with previous spectroscopic
orbits, we determine improved or comparable elements. For HD28271 and
HD200790, our spectroscopic results support the conclusions of
previous authors that the large values of their mass functions and
lack of detectable secondary spectrum argue for the secondary in each
case being a pair of low-mass dwarfs. The orbits given here may be
useful in combination with future interferometric and Gaia satellite
observations.
Description:
The radial velocities used here are mainly from four sources: those
obtained during the aforementioned work of Abt & Willmarth 2006 (Cat.
J/ApJS/162/207), an earlier survey of solar-type stars (1986-1990,
Julian Days 2546708-2550885) reported in Abt & Willmarth
(1992ASPC...32...82A 1992ASPC...32...82A), subsequent observations by the first author
(DW) using the same spectrograph, and observations by the second
author (FF) that were acquired at Fairborn Observatory (Fekel et al.
2009AJ....137.3900F 2009AJ....137.3900F).
The observations of Abt & Willmarth 2006 (Cat. J/ApJS/162/207) were
obtained with the Kitt Peak National Observatory (KPNO) 0.9m auxillary
coude feed telescope and the coude spectrograph, which was originally
built for the KPNO 2.1m telescope. The observations reported in Abt &
Willmarth (1992ASPC...32...82A 1992ASPC...32...82A) employed the same equipment, except
the "B" grating was used yielding approximately half the resolution
used in Abt & Willmarth 2006 (Cat. J/ApJS/162/207). Subsequent
observations obtained by DW used either the "A" grating as in Abt &
Willmarth 2006 (Cat. J/ApJS/162/207) or a 31.6grooves/mm echelle
grating cross-dispersed by grisms. The latter combination yields a
resolving power λ/Δλ=72000 for 2 pixels.
Spectroscopic observations with the 2m Tennessee State University
telescope and fiber-fed echelle spectrograph at Fairborn Observatory
in southeast Arizona were described in detail in Fekel et al. 2015
(Cat. J/AJ/149/63), and provide the majority of the more recent radial
velocities.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 16 Basic properties of the program stars
table2.dat 150 28 Spectroscopic binary orbital elements
table4.dat 51 1193 Radial velocities of program stars
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See also:
B/sb9 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2014)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
I/276 : Tycho Double Star Catalogue (TDSC) (Fabricius+ 2002)
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
III/106 : MK Classification of Visual Multiples (Abt, 1981)
J/AJ/145/41 : RVs of 33 spectroscopic binaries (Katoh+, 2013)
J/AJ/144/56 : Speckle interferometry at SOAR in 2012 (Tokovinin+, 2012)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/ApJS/180/117 : MK classifications of spectroscopic binaries (Abt, 2009)
J/AJ/135/209 : Velocities of 761 HIP giants (Massarotti+, 2008)
J/ApJS/162/207 : Radial velocities of solar-type stars (Abt+, 2006)
J/ApJS/141/503 : RVs for 889 late-type stars (Nidever+, 2002)
J/A+A/374/227 : Radial velocity in multiple systems (Tokovinin+, 2001)
J/ApJS/59/95 : Visual multiples. VIII. (Abt+, 1985)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Name Star name
8- 11 I4 --- HR [1406/8548]? HR identification number
13- 18 I6 --- HD [28271/212754] HD identification number
20- 31 A12 --- SpT Spectral type (1)
33- 36 F4.2 mag Vmag [5.05/6.95] The V-band magnitude (2)
38- 42 F5.3 mag B-V [0.51/1.11]? The B-V color index (2)
44- 48 F5.2 mas plx [6.5/51.55]? Parallax (3)
50- 54 F5.2 mag VMag [-0.08/5.21] Absolute V-band magnitude
56 A1 --- l_vsini [<] Upper limit flag on vsini
57- 60 F4.1 km/s vsini [1.8/32.8] Projected rotational velocity
62- 64 F3.1 km/s e_vsini [1/2]? Uncertainty in vsini
66- 76 F11.6 d Per [7.7/6528]? Period
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Note (1): Spectral type source is given in the Section 4 discussion of each
star.
Note (2): From Hipparcos catalog (Perryman & ESA 1997, Cat. I/239).
Note (3): From HIP2 catalog (van Leeuwen 2007, Cat. I/311).
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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- 6 I6 --- HD [28271/212754] HD identification number
8 A1 --- Ref Orbital element reference (1)
10- 21 F12.7 d Per [7.79/6528] Orbital period
23- 32 F10.7 d e_Per [0/59] Uncertainty in Per
34- 42 F9.3 d T0 [20165/57025] Time of periastron, in
Heliocentric Julian Date (HJD-2400000)
44- 50 F7.3 d e_T0 [0.074/102] Uncertainty in T0
52- 58 F7.5 --- e [0.0056/0.83] Orbital eccentricity
60- 66 F7.5 --- e_e [0.00078/0.14] Uncertainty in e
68- 73 F6.2 deg omega [0/302] Longitude of periastron (ω)
75- 79 F5.2 deg e_omega [0.37/68.51] Uncertainty in ω
81- 87 F7.4 km/s K [1.61/24.32] Velocity semi-amplitude
89- 94 F6.4 km/s e_K [0.0056/1.2] Uncertainty in K
96-102 F7.3 km/s gamma [-87.6/48.5]? Center-of-mass velocity (γ)
104-108 F5.3 km/s e_gamma [0.015/0.7]? Uncertainty in γ
110-115 F6.4 km/s sigma [0.0245/3.1]? Dispersion in fit residual
σ(O-C)
117-124 F8.4 Gm asini [2.585/414.5]? Projected orbital separation
(a1sini)
126-132 F7.4 Gm e_asini [0.0039/34]? Uncertainty in asini
134-141 F8.6 Msun f(m) [0.000499/0.295]? Mass function (computed from
the orbital elements)
143-150 F8.6 Msun e_f(m) [0/0.8]? Uncertainty in f(m)
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Note (1): The codes for the orbital element sources are defined as follows:
b = Tokovinin & Gorynya 2001 (Cat. J/A+A/374/227);
c = Massarotti et al. 2008 (Cat. J/AJ/135/209);
d = Vennes et al. (1998ApJ...502..763V 1998ApJ...502..763V);
e = Ginestet et al. (1974A&AS...15..133G 1974A&AS...15..133G);
f = Griffin (2014Obs...134..245G 2014Obs...134..245G);
g = Tokovinin 2012 (Cat. J/AJ/144/56);
h = Katoh et al. 2013 (Cat. J/AJ/145/41);
i = Hearnshaw et al. (2012MNRAS.427..298H 2012MNRAS.427..298H);
j = Bopp et al. (1970MNRAS.147..355B 1970MNRAS.147..355B);
k = Griffin (2011Obs...131..294G 2011Obs...131..294G);
l = From data of Beavers & Eitter (1986ApJS...62..147B 1986ApJS...62..147B);
m = Griffin (2010Obs...130...17G 2010Obs...130...17G).
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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- 6 I6 --- HD [28271/212754] HD identification number
8- 17 F10.4 --- HJD [24253.7/57297.7] Heliocentric Julian Date
(HJD-2400000)
19- 24 F6.4 --- Phase [0/1] Orbital phase
26- 31 F6.2 km/s RV [-94.1/51.61] Radial velocity
33- 36 F4.2 --- Weight [0.05/2] Weight assigned in orbital analysis
38- 42 F5.2 km/s O-C [-1.15/1.15] Radial velocity (O-C) residual
44- 51 A8 --- Sce Radial velocity source (mostly observatory
identification) (1)
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Note (1): Radial velocity sources are:
KPNO(AW) = Observations of Abt & Willmarth 2006 (Cat. J/ApJS/162/207)
obtained with the Kitt Peak National Observatory (KPNO) 0.9m
auxillary coude feed telescope and the coude spectrograph. The
observations reported in Abt & Willmarth (1992ASPC...32...82A 1992ASPC...32...82A)
employed the same equipment, except the "B" grating was used
yielding approximately half the resolution used in Abt &
Willmarth 2006 (Cat. J/ApJS/162/207);
KPNO(DW) = Observations obtained by the first author (DW) at Kitt Peak
National Observatory;
KPNO(FF) = Observations obtained by the second author (FF) at Kitt Peak
National Observatory;
Fair(FF) = Spectroscopic observations obtained by the second author (FF)
with the 2m Tennessee State University telescope and fiber-fed
echelle spectrograph at Fairborn Observatory in southeast
Arizona;
MtWilson = Observations of Abt (1970ApJS...19..387A 1970ApJS...19..387A) at the Mount Wilson
Observatory;
Nid = Nidever et al. 2002 (Cat. J/ApJS/141/503);
DMH = Duquennoy, Mayor and Halbwachs (1991A&AS...88..281D 1991A&AS...88..281D).
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History:
From electronic version of the journal
References:
Fekel et al. Paper II. 2018AJ....156..117F 2018AJ....156..117F, Cat. J/AJ/156/117
(End) Prepared by [AAS]; Sylvain Guehenneux [CDS] 19-Sep-2016