J/A+A/527/A140 Mass limits on substellar companions (Reffert+, 2011)
Mass constraints on substellar companion candidates from the re-reduced
Hipparcos intermediate astrometric data: nine confirmed planets and two
confirmed brown dwarfs.
Reffert S., Quirrenbach A.
<Astron. Astrophys., 527, A140 (2011)>
=2011A&A...527A.140R 2011A&A...527A.140R
ADC_Keywords: Stars, double and multiple ; Planets ; Stars, masses
Keywords: astrometry - binaries: spectroscopic - planetary systems -
brown dwarfs
Abstract:
The recently completed re-reduction of the Hipparcos data by van
Leeuwen (2007, Astrophys. Space Library 350) makes it possible to
search for the astrometric signatures of planets and brown dwarfs
known from radial velocity surveys in the improved Hipparcos
intermediate astrometric data.
Our aim is to put more significant constraints on the orbital
parameters which cannot be derived from radial velocities alone, i.e.
the inclination and the longitude of the ascending node, than was
possible before. The determination of the inclination in particular
allows to calculate an unambiguous companion mass, rather than the
lower mass limit which can be obtained from radial velocity
measurements.
Description:
We fitted the astrometric orbits of 310 substellar companions around
258 stars, which were all discovered via the radial velocity method,
to the Hipparcos intermediate astrometric data provided by van
Leeuwen (2007, Astrophys. Space Library 350).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 77 318 Upper mass limits for substellar companion
candidates detected via radial velocities
refs.dat 100 77 References
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See also:
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Name of substellar companion
16- 21 I6 --- HIP HIP number of the star
23 A1 --- Notes [*] indicates a detailed note in the paper,
(Sect. 6)
25- 29 A5 --- Ref Reference(s) in refs.dat file
31- 43 F13.8 d Per ?=- Orbital period
44- 51 F8.4 Mjup m2sini ?=- Minimum secondary mass derived from
radial velocities
53- 57 F5.1 deg imin Mimimun inclination 3σ confidence limit
59- 63 F5.1 deg imax Maximun inclination 3σ confidence limit
65 A1 --- l_m2max Limit flag on m2max
66- 71 F6.1 Mjup m2max ? Upper limit corresponding to the 3σ
confidence region in mass
73- 77 F5.1 Mjup m2min ? Lower limit for the 3σ confidence
region in mass
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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 Reference number
4- 22 A19 --- BibCode BibCode
24- 47 A24 --- Aut Author's name
49-100 A52 --- Com Comments
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 10-Aug-2011