J/MNRAS/458/3272 Accurate SB2 radial velocities (Kiefer+, 2016) ================================================================================ Masses of the components of SB2 binaries observed with Gaia. III. Accurate SB2 orbits for 10 binaries and masses of HIP 87895. Kiefer F., Halbwachs J.-L., Arenou F., Pourbaix D., Famaey B., Guillout P., Lebreton Y., Nebot Gomez-Moran A., Mazeh T., Salomon J.-B., Soubiran C., Tal-Or L. =2016MNRAS.458.3272K (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Binaries, spectroscopic ; Radial velocities Keywords: methods: observational - techniques: interferometric - techniques: radial velocities - binaries: spectroscopic - stars: fundamental parameters - stars: individual: HIP 87895 Abstract: In anticipation of the Gaia astrometric mission, a large sample of spectroscopic binaries has been observed since 2010 with the Spectrographe pour l'Observation des PHenomenes des Interieurs Stellaires et des Exoplanetes spectrograph at the Haute-Provence Observatory. Our aim is to derive the orbital elements of double-lined spectroscopic binaries (SB2s) with an accuracy sufficient to finally obtain the masses of the components with relative errors as small as 1 per cent when the astrometric measurements of Gaia are taken into account. In this paper, we present the results from five years of observations of 10 SB2 systems with periods ranging from 37 to 881d. Using the todmor algorithm, we computed radial velocities from the spectra, and then derived the orbital elements of these binary systems. The minimum masses of the components are then obtained with an accuracy better than 1.2 per cent for the 10 binaries. Combining the radial velocities with existing interferometric measurements, we derived the masses of the primary and secondary components of HIP 87895 with an accuracy of 0.98 and 1.2 per cent, respectively. Description: The observations were performed at the T193 telescope of the Haute-Provence Observatory, with the SOPHIE spectrograph. SOPHIE is dedicated to the search of extrasolar planets, and, thanks to its high resolution (R~75000), it enables accurate stellar RVs to be measured for SB2 components. The RVs of the components are derived using the TwO-Dimensional CORrelation algorithm todcor (Zucker & Mazeh 1994ApJ...420..806Z; Zucker et al. 2004, Cat. J/A+A/426/695). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 39 10 10 SB2 analysed in this paper table3.dat 77 123 New radial velocities from SOPHIE and obtained with todmor table4.dat 32 10 Correction terms applied to the uncertainties of the new RV measurements (Table4, Col. 1, 7-10) -------------------------------------------------------------------------------- See also: I/337 : Gaia DR1 (Gaia Collaboration, 2016) J/A+A/498/627 : Radial velocities of SB with M giant (Famaey+, 2009) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1 A1 --- Note [P1] Note (1) 3- 8 I6 --- HIP HIP number 10- 15 I6 --- HD HD number 17- 20 F4.2 mag Vmag V magnitude 22- 27 F6.2 d Per Period (2) 29- 30 I2 --- Nsp Number of spectra collected with SOPHIE. 32- 35 F4.1 --- Tspan Total span of observation epochs, counted in number of periods 37- 39 I3 --- SNR Median signal-to-noise ratio of each sample -------------------------------------------------------------------------------- Note (1): Note as follows: P = Previously published SB2 1 = SB2 identified in paper I, Halbwachs et al., 2014MNRAS.445.2371H, previously published as SB1 Note (2): The period values are taken from the SB9 catalogue (Pourbaix et al., 2004, Cat. B/sb9). -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 A3 --- --- [HIP] 5- 10 I6 --- HIP HIP number 12- 21 F10.4 d BJD Barycentric Julian date (BJD-2400000) 23- 30 F8.4 km/s RV1 Primary radial velocity 31 A1 --- n_RV1 [*] Note on RV1 (1) 33- 38 F6.4 km/s e_RV1 rms uncertainty on RV1 39 A1 --- n_e_RV1 [*] Note on e_RV1 (1) 41- 49 F9.4 km/s RV2 Secondary radial velocity 50 A1 --- n_RV2 [*] Note on RV2 (1) 52- 57 F6.4 km/s e_RV2 rms uncertainty on RV2 58 A1 --- n_e_RV2 [*] Note on e_RV2 (1) 61- 67 F7.4 km/s O1-C1 Observed minus computed for RV1 68 A1 --- n_O1-C1 [*] Note on O1-C1 (1) 70- 76 F7.4 km/s O2-C2 Observed minus computed for RV2 77 A1 --- n_O2-C2 [*] Note on O2-C2 (1) -------------------------------------------------------------------------------- Note (1): * indicates outlier, not taken into account in the analysis. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 I6 --- HIP HIP number 8- 13 F6.4 km/s eps1 Noise to be quadratically added to e_RV1 15- 19 F5.3 --- phi1 Correction coefficient; the final uncertainty of RV1 is: phi1*sqrt(e_RV1^2^ + eps1^2^) 21- 26 F6.4 km/s eps2 Noise to be quadratically added to e_RV2 28- 32 F5.3 --- phi2 Correction coefficient; the final uncertainty of RV2 is: phi2*sqrt(e_RV2^2^ + eps2^2^) -------------------------------------------------------------------------------- History: * 30-May-2017 : From electronic version of the journal * 21-Dec-2017 : Table 4 added References: Halbwachs et al., Paper I 2014MNRAS.445.2371H Halbwachs et al., Paper II 2016MNRAS.455.3303H Kiefer et al., Paper IV 2018MNRAS.474..731K, Cat. J/MNRAS/474/731 ================================================================================ (End) Patricia Vannier [CDS] 17-Feb-2017