J/A+A/563/L10 BD+33 2642 and HD 112313 radial velocities (Van Winckel+, 2014)
Binary central stars of planetary nebulae with long orbits: the radial velocity
orbit of BD+33 2642 (PN G052.7+50.7) and the orbital motion of HD 112313
(PN LoTr5).
Van Winckel H., Jorissen A., Exter K., Raskin G., Prins S.,
Perez Padilla J., Merges F., Pessemier W.
<Astron. Astrophys. 563, L10 (2014)>
=2014A&A...563L..10V 2014A&A...563L..10V
ADC_Keywords: Binaries, orbits ; Binaries, spectroscopic ; Planetary nebulae ;
Spectroscopy
Keywords: binaries: spectroscopic - stars: chemically peculiar -
planetary nebulae: individual: BD+33 2642 -
planetary nebulae: individual: LoTr5 - techniques: radial velocities
Abstract:
We study the impact of binary interaction processes on the evolution
of low- and intermediate-mass stars using long-term monitoring of
their radial velocity. Here we report on our results on the central
stars of two planetary nebulae (PNe): the well-studied
spectrophotometric standard BD+33 2642 (central star of
PNG 052.7+50.7) and HD 112313 (central star of PN LoTr5), the
optical light of which is dominated by a rapidly rotating G star.
Description:
We used the HERMES spectrograph mounted on the 1.2m Flemish Mercator
telescope to monitor central stars of Planetary Nebulae. Here we
report on the detection of the orbit of BD+33.2642 (central star of PN
G052.7+50.7) and the detection of orbital motion of HD 112313 (central
star of PN LoTr5).
For BD+33.2642 we sampled 1.5 cycles of the 1105±24 day orbital
period. For HD 112313 a full period is not yet covered, despite our
1807 days of monitoring.
To our knowledge these are the first detections of orbits in PNe that
are in a range from several weeks to a few years. In the tables we
give the individual radial velocity measurements and list the Julian
Date of the measurement, the obtained radial velocity expressed in
km/s with respect to the barycentre of the solar system and 1-sigma
error on the radial velocity determination.
Objects:
----------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------
15 51 59.89 +32 56 54.3 BD+33 2642 = PN G052.7+50.7
12 55 33.75 +25 53 30.6 HD 112313 = PN LoTr 5
----------------------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
bd332642.dat 34 202 Radial velocity data of BD+33 2642
hd112313.dat 34 50 Radial velocity data of HD 112313
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See also:
V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)
Byte-by-byte Description of file: bd332642.dat hd112313.dat
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Bytes Format Units Label Explanations
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2- 16 F15.7 d JD Julian Date of the measurement
19- 26 F8.3 km/s BRV Barycentric radial velocity
29- 34 F6.3 km/s e_BRV Error on the barycentric radial velocity
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Acknowledgements:
Hans Van Winckel, Hans.VanWinckel(at)ster.kuleuven.be
(End) Patricia Vannier [CDS] 06-Mar-2014