J/A+A/446/583 Journal of all RVs of eps Per primary (Libich+, 2006)
The new orbital elements and properties of epsilon Persei
Libich J., Harmanec P., Vondrak J., Yang S., Hadrava P., Aerts C.,
De Cat P., Koubsky P., Skoda P., Slechta M., Uytterhoeven K., Mathias P.
<Astron. Astrophys. 446, 583 (2006)>
=2006A&A...446..583L 2006A&A...446..583L
ADC_Keywords: Binaries, spectroscopic ; Radial velocities
Keywords: stars: binaries: early-type - stars: binaries: spectroscopic -
Abstract:
A detailed analysis of a large collection of electronic spectra from
three observatories, together with radial velocities published
earlier, were used to derive a new ephemeris and improved orbital
elements for the eps Per binary. Observations covering a time interval
of about 37000-days (101.3-years) can be reconciled with a constant
orbital period of (14.0691±0.00004)-days. The high orbital
eccentricity of 0.555±0.009 was also confirmed. New spectral
observations confirm that there is a periodic variation of the
systemic velocity. Together with new evidence from astrometric
observations (also analyzed here), they confirm the existence of a
third body in the system with an orbital period of about 9600-days
(26.3-years), rather than 4156-days, as reported earlier. Application
of the disentangling technique to the H alpha spectra with good S/N
ratios did not allow detection of spectral lines of either the
secondary or tertiary components. For plausible inclinations between
30 and 90 °, the observed mass function implies a mass of the
secondary M2=0.85-1.77M☉, if a primary mass is adopted of
(13.5±2.0)M☉. Attempts to detect the third body via
interferometric observations should continue in spite of this first
negative result.
Description:
Radial velocities of epsilon Persei primary component are presented.
They are from 15 various sources (observatories, instruments). The
journal of data sources in details is in our paper, see Table 2. Each
source is designated by number in column 3.
Objects:
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RA (2000) DE Designation(s)
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03 57 51.2 +40 00 37 eps Per = ADS 2888 A
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 24 1617 Journal of all RVs of epsilon Persei primary
refs.dat 80 31 Source list
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See also:
J/ApJ/525/420 : UV and optical line variations in eps Persei (Gies+, 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 F10.4 d MJD Modified Julian date (JD-2400000.5)
12- 18 F7.3 km/s RV Radial velocity of primary of epsilon Persei
21- 22 I2 --- Ref Data source number (in refs.dat file)
24 A1 --- Rem [x] x: excluded from orbital solutions
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Source number
4- 80 A77 --- Note Text of the note
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Acknowledgements: Jan Libich, libich(at)sunstel.asu.cas.cz
(End) Jan Libich [Czech republic], Patricia Vannier [CDS] 27-Sep-2005