J/A+A/684/A74 SB9 orbits with HERMES/Mercator RVs (Merle+, 2024)
Update of SB9 orbits using HERMES/Mercator radial velocities.
Merle T., Pourbaix D., Jorissen A., Siopis C., Van Eck S., Van Winckel H.
<Astron. Astrophys. 684, A74 (2024)>
=2024A&A...684A..74M 2024A&A...684A..74M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Binaries, spectroscopic ;
Binaries, orbits ; Radial velocities ; Spectroscopy ;
Stars, masses
Keywords: techniques: radial velocities - techniques: spectroscopic -
binaries: close - binaries: spectroscopic -
stars: fundamental parameters - stars: variables: general
Abstract:
The Gaia mission is delivering a large number of astrometric orbits
for binary stars. By combining these with spectroscopic orbits for
systems with two observable spectra (SB2), it is possible to derive
the masses of both components. However, to get masses with a good
accuracy requires accurate spectroscopic orbits, which is the major
aim of the present paper. A subsidiary aim is to discover SB2 systems
hiding among known SB1, and even though this search may often prove
unsuccessful, the acquired radial velocities may be used anyway to
improve the existing spectroscopic orbits.New radial velocities for 58
binary systems from the Catalogue of Spectroscopic Binary Orbits
(SB9), obtained using the high-resolution HERMES spectrograph
installed on the 1.2m Mercator telescope, were used to possibly
identify hitherto undetected SB2 systems. For SB1 systems with
inaccurate orbits, these new radial-velocity measurements were used to
improve the orbital accuracy. This paper provides 51 orbits (41 SB1
and 10 SB2) that have been improved with respect to the solution
listed in the SB9 catalogue, out of the 58 SB9 orbits studied, which
belong to 56 stellar systems. Among them, there are five triple and
four quadruple systems. Despite the high resolution of HERMES, HIP
115142 A is the only system which we detected as a new SB2 system. The
B component of the visual binary HIP 92726 has now been found to be a
spectroscopic system as well, which makes HIP 92726 a newly discovered
quadruple system (SB1+SB1). The high HERMES resolution allowed us
moreover to better isolate the signature of the secondary component of
HIP 12390, HIP 73182 and HIP 111170. More accurate masses have thus
been derived for them. Among the 30 SB also present in Gaia Data
Rlease 3 (DR3) and with periods shorter than the Gaia DR3 time span
(∼1000d), only 5 where flagged as binaries by DR3. Various DR3
selection criteria are responsible for this situation.
Description:
Radial velocities from the HERMES/Mercator spectra for the sample of
HIPPARCOS stars.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 142 58 Programme stars and the behaviour of their old
and new radial velocities with respect to the
reference orbital solution,
as listed in column Reforb
table2.dat 40 634 HERMES RV
--------------------------------------------------------------------------------
See also:
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
B/sb9 : SB9: 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-)
http://sb9.astro.ulb.ac.be : SB9 database home page
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HIP HIP number
7 A1 --- m_HIP [AB] Multiplicity index
8 A1 --- n_HIP [h] Note on HIP (1)
10- 13 I4 --- SB9 SB9 identifier
14- 29 A16 --- SpType Spectral type
30- 32 A3 --- n_SpType Note on spectral type (1)
34- 41 A8 --- TDR3 Type of binary solution provided by Gaia DR3
(Gaia Collaboration et al., 2023,
Cat. I/355) (2)
43- 49 A7 --- SB1/2/c Specifies whether or not the star has been
detected as SB2 (3)
50 A1 --- n_SB1/2/c Note on SB1/2/c (1)
52- 59 A8 --- Mask Mask adopted for the cross correlation (4)
60- 61 I2 --- Nnew Number of new measurements
62 A1 --- --- [,]
63- 64 I2 --- Nnew2 ? Second component number of new measurements
66- 68 I3 --- Nold ?=-
69 A1 --- --- [,] Number of old measurements
70- 72 I3 --- Nold2 ? Second component number of old measurements
74- 78 F5.2 --- (O-C)new Mean deviation of the residuals of the Hermes
RV with respect to the reference orbit
79 A1 --- --- [,]
80- 84 F5.2 --- (O-C)new2 ? Second component mean deviation of the
residuals of the Hermes RV with respect to
the reference orbit
86- 90 F5.2 --- e_(O-C)new Standard deviation of the residuals of the
Hermes RV with respect to the reference orbit
91 A1 --- --- [,]
92- 96 F5.2 --- e_(O-C)new2 ? Second component standard deviation of the
residuals of the Hermes RV with respect to
the reference orbit
98-102 F5.3 --- e_(O-C)old ?=- Old mean deviation of the residuals of
the Hermes RV
103 A1 --- --- [,]
104-107 F4.2 --- e_(O-C)old2 ? Second component old mean deviation of the
residuals of the Hermes RV
109 A1 --- ---
110-111 I2 --- RefOrb Reference orbit (6)
112 A1 --- ---
114 A1 --- Rem [R] R means that a revised orbit combining
old and new (HERMES) measurements has
been computed (5)
116-130 A15 --- OldSys Old system
131-136 F6.2 km/s DeltaRV ? Offset RVHERMES-RVSB9 (see Sect. 2)
between the SB9 and HERMES RV zero-points
138-141 F4.2 km/s e_DeltaRV ? rms uncertainty on DeltaRV
142 A1 --- neDeltaRV Note on e_DeltaRV (1)
--------------------------------------------------------------------------------
Note (1): Notes as follows:
a = It is unclear whether that spectral combination corresponds to the
pair AB or Aa,Ab (see text)
b = Composite nature of this spectrum not confirmed by HERMES (see Sect. A)
c = Not seen as SB2 by HERMES
d = Component spectral type derived from 0.6M☉ mass from
Anguita-Aguero et al. (2022AJ....163..118A 2022AJ....163..118A)
e = The violet Balmer lines from the hot component are too wide to derive a
precise RV from the HERMES spectra
f = The orbit listed in Table 4 is computed from HERMES RV only
g = Based on lines from the cool component
h = Although HIP 115142B is not an entry of the SIMBAD database, it is used
here for convenience. Use HD 219877B in SIMBAD instead
i = See HIP 91751 in Appendix A
Note (2): DR3 type as follows:
astrom = astrometric orbital solution
Acc7 = acceleration models with 7 parameters
Acc9 = acceleration models with 9 parameters
- = there is no DR3 entry for the corresponding SB9 system
noRV = no RV is available from Gaia DR3
brightG = GRVS<5.5 (see details in Sect. 4)
nRV<10 = number of RV was not large enough for DR3 to look for a
spectroscopic orbit
Note (3): SB1/2/c specifies whether or not the star has been detected as SB2 by
either the reference orbit or by the HERMES measurements. The label SBc in
that column indicates that the HERMES spectra reveal the composite nature
of the system, and that RV from the two components could be derived by
focusing at the violet part of the spectrum (revealing the Balmer lines in
the warm component) or at the yellow-red part of the spectrum
(revealing lines from the cool component).
Note (4): Mask as follows:
Bal = Balmer
F0ROT = rotationally-broadened F0 spectrum
G2 = solar-type
Arc = Arcturus
M4 = a M4V spectral template
Note (5): The revised orbit and the corresponding e_(O-C) are then listed in
Table 4 of the paper. Appendix A provides detailed explanations as to why a
revised orbit is not published for systems without flag R.
Note (6): References as follows:
1 = Gonzalez & Levato (2009A&A...507..541G 2009A&A...507..541G, Cat. J/A+A/507/541)
2 = Harper (1926PDAO....3..341H 1926PDAO....3..341H)
3 = Pourbaix (2000A&AS..145..215P 2000A&AS..145..215P)
4 = Griffin (1980Obs...100..113G 1980Obs...100..113G)
5 = Halbwachs et al. (2016MNRAS.455.3303H 2016MNRAS.455.3303H)
6 = De Cat et al. (2000A&A...355.1015D 2000A&A...355.1015D)
7 = Popper (1988AJ.....96.1040P 1988AJ.....96.1040P)
8 = Abt (1965ApJS...11..429A 1965ApJS...11..429A)
9 = Griffin (2006MNRAS.371.1140G 2006MNRAS.371.1140G, Cat. J/MNRAS/371/1140)
10 = Welty & Wade (1995AJ....109..327W 1995AJ....109..327W)
11 = Udry et al. (1998A&AS..131...43U 1998A&AS..131...43U)
12 = Mermilliod et al. (2007A&A...473..829M 2007A&A...473..829M, Cat. J/A+A/473/829)
13 = Griffin (2005Obs...125...81G 2005Obs...125...81G)
14 = Carquillat et al. (2003MNRAS.342.1271C 2003MNRAS.342.1271C)
15 = Wade et al. (1999A&A...347..164W 1999A&A...347..164W, Cat. J/A+A/347/164)
16 = Carquillat & Prieur (2008AN....329...44C 2008AN....329...44C)
17 = Udry et al. (1998A&AS..131...25U 1998A&AS..131...25U)
18 = Massarotti et al. (2008AJ....135..209M 2008AJ....135..209M, Cat. J/AJ/135/209)
19 = Carquillat & Prieur (2007AN....328..527C 2007AN....328..527C)
20 = Griffin (2004Obs...124...97G 2004Obs...124...97G)
21 = Carney et al. (2001AJ....122.3419C 2001AJ....122.3419C)
22 = Spencer Jones (1928AnCap..10h...1S 1928AnCap..10h...1S)
23 = Torres (2006AJ....131.1022T 2006AJ....131.1022T)
24 = Torres et al. (1995ApJ...452..870T 1995ApJ...452..870T)
25 = Griffin (2010Obs...130..125G 2010Obs...130..125G)
26 = Hockey (1969MNRAS.142..543H 1969MNRAS.142..543H)
27 = Zhao et al. (2007ApJ...659..626Z 2007ApJ...659..626Z)
28 = Forveille et al. (1999A&A...351..619F 1999A&A...351..619F)
29 = Katoh et al. (2013AJ....145...41K 2013AJ....145...41K, Cat. J/AJ/145/41)
30 = Duquennoy et al. (1992A&A...254L..13D 1992A&A...254L..13D)
31 = Radford & Griffin (1977Obs....97..173R 1977Obs....97..173R)
32 = Stockton & Fekel (1992MNRAS.256..575S 1992MNRAS.256..575S)
33 = Smekhov (2002AstL...28..393S 2002AstL...28..393S)
34 = Franklin (1952ApJ...116..383F 1952ApJ...116..383F)
35 = Seydel (1931PASP....6..278S 1931PASP....6..278S)
36 = Willmarth et al. (2016AJ....152...46W 2016AJ....152...46W, Cat. J/AJ/152/46)
37 = McClure (1997PASP..109..536M 1997PASP..109..536M)
38 = Famaey et al. (2009A&A...498..627F 2009A&A...498..627F, Cat. J/A+A/498/627)
39 = Griffin (2009Obs...129..147G 2009Obs...129..147G)
40 = Griffin (2009Obs...129..147G 2009Obs...129..147G)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HIP HIPPARCOS number
9- 18 F10.4 d Epoch Heliocentric Julian Date (HJD-2400000)
23- 29 F7.3 km/s RV Radial Velocity
32- 36 F5.3 km/s e_RV Uncertainty on Radial Velocity
39- 40 A2 --- Comp [ABabc ] Component
--------------------------------------------------------------------------------
Acknowledgements:
Thibault Merle, tmerle(at)ulb.ac.be
(End) Patricia Vannier [CDS] 24-Dec-2023