J/A+A/429/309 HR 1099 radial velocities (Frasca+, 2005)
Orbital period variation in close binaries from radial velocity data and
magnetic activity cycles. II. HR 1099.
Frasca A., Lanza A.F.
<Astron. Astrophys. 429, 309 (2005)>
=2005A&A...429..309F 2005A&A...429..309F
ADC_Keywords: Stars, variable ; Radial velocities
Keywords: stars: binaries: close - stars: activity -
stars: binaries spectroscopic - stars: individual: HR 1099
Abstract:
We studied orbital period changes in the non-eclipsing close binary
HR 1099, one of the most bright members of the RS CVn class of
magnetically active binary systems. Intermediate-resolution optical
spectroscopy and IUE archive spectra were used to build
radial-velocity curves yielding epochs of superior conjunction with an
accuracy of 0.01 days. The final database ranged from 1976 to 2002 and
allowed us a better assessment of the amplitude of the orbital period
variation and its timescale.
Objects:
----------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------
03 36 47.3 +00 35 16 HR 1099 = HD 22468
----------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 39 159 Radial velocities from IUE spectra
table2.dat 47 137 Radial velocity of the G5 V and K1 IV components
of HR 1099 from Osservatorio Astrofisico di
Catania (OAC) optical spectra
tables.tex 92 449 LaTeX version of the tables
--------------------------------------------------------------------------------
See also:
VI/110 : Final Merged Log of IUE Observations (NASA-ESA, 2000)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Spectrum Spectrum designation in IUE Archive
11- 23 F13.5 d HJD Heliocentric Julian date
29- 33 F5.1 km/s RVG5 Radial velocity of the G5 V component of HR 1099
37- 39 F3.1 km/s e_RVG5 rms uncertainty on RVG5
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.5 d HJD Heliocentric Julian date
18- 23 F6.2 km/s RVG5 ? Radial velocity of the G5 V component of HR 1099
28- 30 F3.1 km/s e_RVG5 ? rms uncertainty on RVG5
35- 39 F5.1 km/s RVK1 ? Radial velocity of the K1 IV component of HR 1099
44- 46 F3.1 km/s e_RVK1 ? rms uncertainty on RVK1
--------------------------------------------------------------------------------
Acknowledgements: Antonio Frasca, afr(at)ct.astro.it
(End) Patricia Vannier [CDS] 07-Sep-2004