J/AZh/88/530 Dynamical study of ADS 12815 (Kiselev+, 2011)
Dynamical study of the wide visual binary ADS 12815 (16 Cyg).
Kiselev A.A., Romanenko L.G.
<Astron. Zh. 88, 530 (2011)>
=2011AZh....88..530K 2011AZh....88..530K
=2011ARep...55..487K 2011ARep...55..487K
ADC_Keywords: Stars, double and multiple
Abstract:
A homogeneous series of photographic position measurements of the
visual binary ADS 12815 obtained on the 26-inch refractor of the
Pulkovo Observatory (1960-2007) is analyzed. The Pulkovo
observations allow for the existence of the planet around component B
discovered by Cochran et al. (1997ApJ...483..457C 1997ApJ...483..457C) based on
radial-velocity measurements. The orbit of the planet must be steeply
inclined to the plane of the sky (i≥70°). Uniform series of
position measurements obtained at the Dearborn Observatory, US Naval
Observatory, and Pulkovo Observatory, the HIPPARCOS parallax, and the
relative radial velocities obtained by Hauser andMarcy at the Lick
Observatory are used to calculate the elements of possible orbits for
the ADS 12815 stars using the apparent motion parameters method. The
corresponding periods are more than 20000yr, the semi-major axes more
than 900AU, and the eccentricities more than 0.65. All possible orbits
are steeply inclined to the Galactic plane. The obtained family of
orbits is in better agreement with observations than the family
calculated by Hauser and Marcy.
Description:
Photographic observations of the visual binary ADS 12815 were carried
out on the 26-inch refractor at the Pulkovo Observatory from 1960
through 2007; the resulting series contains 128 plates (36 yearly mean
normal places).
Objects:
---------------------------------------------------
RA (2000) DE Designation(s)
---------------------------------------------------
19 41 48.9 +50 31 30 ADS 12815 = * 16 Cyg A
19 41 51.97 +50 31 03 ADS 12815 B = * 16 Cyg B
---------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 48 128 Relative positions of the ADS 12815 components
from photographic observations on the
26-inch Pulkovo refractor
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Seq Sequential number
5- 9 I5 --- Plate Plate number
11- 18 F8.3 yr Epoch Epoch
20- 25 F6.3 arcsec rho Relative distance ρ of component B
relative to the primary A
27- 31 F5.3 arcsec e_rho rms uncertainty on rho
33- 39 F7.3 deg theta Position angle θ of B relative to A
reduced to epoch 2000.0
41- 45 F5.3 deg e_theta rms uncertainty on theta
47- 48 I2 --- N Number of measured images
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 30-Aug-2011