J/AJ/149/8 Radial velocity of southern visual multiple stars (Tokovinin+, 2015) ================================================================================ Radial velocities of southern visual multiple stars. Tokovinin A., Pribulla T., Fischer D. =2015AJ....149....8T ================================================================================ ADC_Keywords: Stars, double and multiple ; Stars, late-type ; Radial velocities Keywords: binaries: general Abstract: High-resolution spectra of visual multiple stars were taken in 2008-2009 to detect or confirm spectroscopic subsystems and to determine their orbits. Radial velocities of 93 late-type stars belonging to visual multiple systems were measured by numerical cross-correlation. We provide the individual velocities, the width, and the amplitude of the Gaussians that approximate the correlations. The new information on the multiple systems resulting from these data is discussed. We discovered double-lined binaries in HD 41742B, HD 56593C, and HD 122613AB, confirmed several other known subsystems, and constrained the existence of subsystems in some visual binaries where both components turned out to have similar velocities. The orbits of double-lined subsystems with periods of 148 and 13 days are computed for HD 104471 Aa,Ab and HD 210349 Aa,Ab, respectively. We estimate individual magnitudes and masses of the components in these triple systems and update the outer orbit of HD 104471 AB. Description: In this paper, we report spectroscopic observations of southern multiple stars with late-type components. Most targets were selected from the Multiple Star Catalog (MSC; Tokovinin 1997, cat. J/A+AS/124/75; See the current version at http://www.ctio.noao.edu/~atokovin/stars/index.php). Six nights on the Du Pont 100inch telescope at the Las Campanas Observatory (LCO) were allocated to this work in 2008 through collaboration with the University of Toronto (P. I. S. Rucinski). The observing time was shared between multiple stars (this program) and monitoring of close binaries. Spectra were taken with the Littrow-type echelle spectrometer mounted at the Cassegrain focus. The observations were conducted on 2008 April 19-21, August 8, and November 10-11. We used a 1''*4'' slit that provided a spectral resolution of ~40000. Some objects from this program were also targeted during setup and commissioning of the fiber echelle (FECH) at the CTIO-SMARTS (Small and Medium Astronomical Research Telescope System) 1.5m telescope in 2008 April-June. It was the de-commissioned echelle spectrometer from the 4m Blanco telescope, transferred into the coude room of the 1.5m. The detector was a 2K SIT CCD with the Arcon controller. The same feeding and calibration system is now used at the CHIRON spectrometer that replaced FECH in 2010. The spectral resolution of FECH was about 44000. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 46 284 Individual observations table2.dat 35 93 List of observed multiple stars notes.dat 911 39 Notes -------------------------------------------------------------------------------- See also: B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2014) V/130 : Geneva-Copenhagen Survey of Solar neighbourhood III (Holmberg+, 2009) III/127 : RV of bright Southern stars (Andersen Nordstroem, 1983-85) J/A+A/465/257 : Radial velocity in multiple systems (Tokovinin+, 2007) J/A+A/382/118 : Spectroscopic sub-systems in multiple stars (Tokovinin+, 2002) J/ApJS/141/503 : Radial Velocities for 889 late-type stars (Nidever+, 2002) J/A+AS/124/75 : Multiple star catalogue (MSC) (Tokovinin 1997-1999) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 11 A11 --- Name Name of the star 12- 13 A2 --- m_Name Visual component (where necessary) 15- 24 F10.4 d JD Julian date of observation (JD-2400000) 26- 31 F6.2 km/s RV Barycentric radial velocity 33- 37 F5.3 --- ccf [0/0.45] Cross-correlation function (CCF) amplitude (1) 39- 43 F5.2 km/s sigma [0/64] CCF dispersion ({sigma}) (1) 45- 46 A2 --- Inst Instrument and component identification (2) -------------------------------------------------------------------------------- Note (1): Parameter of the fitted Gaussians. If the Cross-correlation function (CCF) was approximated by two or three Gaussians, these additional data are listed in the following lines. Note (2): Instrument codes and numbers are defined as follows: F2 = Fiber ECHelle (FECH) at the CTIO-SMARTS (Small and Medium Astronomical Research Telescope System) 1.5m telescope for the secondary spectroscopic component; F3 = FECH for the tertiary spectroscopic component; F1 = FECH for other component; C2 = CHIRON spectrometer (replaced FECH in 2010) for the secondary spectroscopic component; C3 = CHIRON for the tertiary spectroscopic component; C1 = CHIRON for other component; L2 = Du Pont 100inch telescope at the Las Campanas Observatory (LCO) for the secondary spectroscopic component; L3 = LCO for the tertiary spectroscopic component; L1 = LCO for other component. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 11 A11 --- Name Name of the late-type star 12- 13 A2 --- m_Name Component 15- 24 A10 --- WDS The WDS code (based on J2000 position) (1) 26 A1 --- f_ [*] Asterisk for double-lined binary (SB2) 27- 31 F5.1 km/s ? Mean radial velocity 32 A1 --- u_ [:] Colons mark measurements of low precision derived from wide cross-correlation functions (CCFs) with {sigma}>15km/s 34- 35 I2 --- N Number of measurements -------------------------------------------------------------------------------- Note (1): Following WDS names were changed at CDS to match the WDS catalog: WDS 00466-0426 = modified into WDS 00467-0426; WDS 01071+0035 = modified into WDS 01071-0036; WDS 01157-6852 = modified into WDS 01158-6853; WDS 03177-6235 = modified into WDS 03182-6230; WDS 06003-3103 = modified into WDS 06003-3102; WDS 06046-4504 = modified into WDS 06046-4505; WDS 07039-4336 = modified into WDS 07040-4337; WDS 10083+1159 = modified into WDS 10084+1158; WDS 19553+0625 = modified into WDS 19553+0624; WDS 20274-0206 = modified into WDS 20275-0206; WDS 23005-3344 = modified into WDS 23005-3345; WDS 23066-4330 = modified into WDS 23069-4331; WDS 23142-0856 = modified into WDS 23141-0855. -------------------------------------------------------------------------------- Byte-by-byte Description of file: notes.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 A10 --- Name Name of the star 12-911 A900 --- Note Notes about the star -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 30-Jan-2015