title: Orbits of visual double stars discovered by Otto Struve at Pulkovo
metadata.name: dc.contributor.author
metadata.value: Baidin, Aleksey E.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Perov, Nikolay I.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Romanenko, Lyudmila G.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2018-04-26T09:47:10Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2018-04-26T09:47:10Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018-03
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Baidin A.E., Perov N. I., Romanenko L.G. Orbits of visual double stars discovered by Otto Struve at Pulkovo. Vestnik SPbSU. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 1, pp. 154–164.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: 10.21638/11701/spbu01.2018.117
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/9509
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Orbits of 17 visual double stars discovered by Otto Struve at Pulkovo STT 28, 75, 119,132,
  182, 201, 228, 241, 250, 296, 369, 383, 424, 430, 435, 462, 520 are calculated for the first
  time. Both visual observations XIX–XX centuries by means of the micrometric technique
  and modern observations in according with the fourth interferometric catalog are used. All
  the presented stars had been observing for more than hundred years. But these observations
  cover arcs only from 10 to 50 degrees for this long-term interval. There are some problems
  of orbit determinations if a method based on the of short arc observations. The new method
  improving a method of Hartkopf et al is suggested in this work. The new method is globally
  converging and uses genetic algorithms for saving of time of calculations. It is possible to use
  additional data (sum of masses of the components and relative radial velocities) to increase
  the accuracy of the results. The relative radial velocities are unknown for presented 17 stars;
  therefore we use only masses of components which are obtained from photometric data of
  the Tycho catalog. All these stars are located far from the Sun, therefore their orbits can be
  considered as preliminary ones. With using the radial velocity value only the orbit of STT
  547 is calculated. This is the control star, because there are a lot of variants of this orbit
  which has been obtained by different authors, and the radial velocities of components are
  well known. We obtained three variants of the orbit for this star. All the orbits fit with each
  other and the recent observations, and the calculated dynamic masses are in agreement with
  photometric data. Orientation of the received orbits in a galactic frame is also calculated
  and for 11 of 18 cases the planes of the orbits are steeply inclined to the Galaxy plane.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 1
metadata.lang: -
metadata.name: dc.subject
metadata.value: visual double stars
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: orbital elements
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: new methods of orbit determination
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: genetic algorithms
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: orientation of orbits in a galactic reference frame
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Orbits of visual double stars discovered by Otto Struve at Pulkovo
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 17-Baydin.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/9509/1/17-Baydin.pdf
resources.format: Adobe PDF
resources.size: 374,48 kB