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1 edition of Orbit of the spectroscopic binary h Draconis found in the catalog.

Orbit of the spectroscopic binary h Draconis

W. E. Harper

Orbit of the spectroscopic binary h Draconis

by W. E. Harper

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  • 3 Currently reading

Published by Govt. Print. Bureau in Ottawa .
Written in English

    Subjects:
  • Orbites,
  • Stars,
  • Étoiles,
  • Spectra,
  • Orbits,
  • Spectre

  • Edition Notes

    Statementby W.E. Harper
    SeriesCIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 9-90988, CIHM/ICMH microfiche series -- no. 9-90988, Publications of the Dominion Observatory -- v. 4, no. 16.
    ContributionsDominion Observatory (Canada)
    The Physical Object
    Format[microform] /
    Pagination1 microfiche (9 fr.)
    ID Numbers
    Open LibraryOL25508536M
    ISBN 10065990988X
    OCLC/WorldCa150591684

    Abstract HD = HR = 71 Draconis is a relatively recently recognized naked-eye eclipsing binary. A revised set of spectroscopic orbital elements is presented, and an analysis is conducted of the rotation effect which occurs at primary eclipse, taking into account a large number of higher dispersion spectroscopic observations. The planet was discovered when periodic Doppler shifts in the star's spectrum revealed the presence of a planet, similar to the spectroscopic binary nature of Psi¹ Draconis AC. Its minimum mass is M J, and it orbits its host star every years taking a relatively eccentric llation: Draco.

    6 Draconis is a single-lined spectroscopic binary star system in the northern constellation of Draco, located about light years away from the Sun. It is visible to the naked eye as an orange-hued star with an apparent visual magnitude of Constellation: Draco. Orbital period changes for the Algol-type eclipsing binary AI Dra were studied based on the analysis of its observed times of light minimum. The period variation showed cyclic changes in the interval from JD. ≈ 24 to JD. ≈ 24 and a secular period increase rate (dP/dt = × 10 −7 d/year) starting from JD. ≈ 24 up to 24 , in a time scale equals to 5 × 10 6 : Magdy A. Hanna.

    Title: Orbit of the spectroscopic binary 4 H Draconis Authors: Vo&ibreve;tkevich-Okulich, N. V. Journal: Mitteilungen der Nikolai-Hauptsternwarte zu Pulkowo, vol. 10, pp texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Orbit of the spectroscopic binary 40 Aurigæ [microform] Item Preview remove-circle Share or Embed This :


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Orbit of the spectroscopic binary h Draconis by W. E. Harper Download PDF EPUB FB2

Adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A. adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86ACited by: 2.

Get this from a library. Orbit of the spectroscopic binary H.P. [Reynold K Young; Dominion Astrophysical Observatory (Canada)]. texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection.

National Emergency Library. Top Orbit of the spectroscopic binary H.P. [microform] Item Preview remove-circle Share or Embed This : Orbit of the spectroscopic binary h Draconis [electronic resource] / By W. (William Edmund) Harper and Dominion Observatory (Canada) Abstract. Original issued in series: Publications of the Dominion Observatory ; v.

4, no. Dated (p. ): Dominion Observatory, Ottawa, October, Chiefly n onic. Abstract New radial velocity measurements of the Algol-type eclipsing binary AI Dra, based on Reticon observations, are presented.

The velocity measures themselves are based on fitting theoretical profiles, generated by a physical model of the binary, to the observed cross-correlation function (ccf). BY Dra is a nearly equal-mass double-lined binary system whose spectroscopic orbit is well known.

We have estimated the visual orbit of BY Dra from our interferometric visibility data fit both separately and in conjunction with archival radial velocity data.

Our BY Dra orbit is in good agreement with the spectroscopic by:   Revised orbital elements are presented for the bright (V = ) single line spectroscopic binary Theta Draconis = HD = BD+58 = SAO (F8IV) using nearly eighty years of radial velocity data.

The most recent measurements were obtained during calibration of the McDonald Observatory m coude radial velocity : M. Slovak, T. Barnes. Reticon spectra of high dispersion and time resolution have been obtained of BV an BW Draconis, which together form a visual binary and each of which is a W UMa system.

The spectra were measured by by:   The Ninth Catalog of Spectroscopic Binary Orbits (SB9) continues the series of compilations of spectroscopic orbits carried out over the past 35 years by Batten and collaborators, e.g., the 8th SBO Catalog (SB8, CDS Catalog V/64) of Batten, Fletcher and MacCarthyPubl.

DAO, 17, 1. This catalog is regularly updated. A Preliminary Visual Orbit of BY Draconis A.F. Boden1,2, B.F. Lane3,2 ABSTRACT We report on the preliminary determination of the visual orbit of the double-lined spectroscopic binary system BY Draconis with data obtained by the Palomar Testbed Interferometer in BY Dra is a nearly equal-mass double-lined binary system.

KIC is a bright (Kp=), short period (P= hr), double-line spectroscopic binary system showing both primary and secondary eclipses.

Both stars are near 1 solar mass, and so are. It has long been known that 6 Dra shows small variations in radial velocity, and there is photometric and spectroscopic evidence that its spectrum is composite. It is shown, largely on the basis of a generous number of photoelectric radial velocities mainly obtained at Cambridge and Fick observatories, that the orbit is of mild eccentricity and.

Astrophys. Astr. () 11, – The Spectroscopic Orbit of 6 Draconis* R. Griffin The Observatories, Madingley Road, Cambridge CB3 OHA, England J. Eitter Erwin W. Fick Observatory, Iowa State University, Ames, IowaU.S.A.

Reimers Hamburger Sternwarte, GojenbergswegD– Hamb Federal Republic of Germany Received July 7; revised March.

We report on the preliminary determination of the visual orbit of the double-lined spectroscopic binary system BY Draconis with data obtained by the Palomar Testbed Interferometer in.

Spectroscopic binary orbits from photoelectric radial velocities - Paper HDHDand their visual companions Article in Observatory -Didcot- () August Given: a set of measurements of the radial velocity, referring to one component of a spectroscopic binary with respect to the other one.

The original data have already been reduced to normal places and corrected for the relative motion of the earth and the sun. To derive the orbit in : J. Kleczek. hys. 12^ () hye.S-i.n. 8 () Pergamon Press pic. Printed in Great Britain /88$+ A SPECTROSCOPIC ORBIT FOR THETA DRACONIS FROM PHOTOELECTRIC RADIAL VELOCITIES LU Wen-xian Shanghai Observatory, Academia Sinica SHEN Liang-zhao and JIANG Zhao-ji, Beijing Observatory, Academia Sinica Keywords: Stars - Author: Lu Wen-xian, Shen Liang-zhao, Jiang Zhao-ji.

6 Dra has long been known to show small variations in radial velocity, and there is photometric and spectroscopic evidence that its spectrum is composite. We show, largely on the basis of a generous number of photoelectric radial velocities mainly obtained at Cambridge and Fick observatories, that the orbit is of mild eccentricity and has a Cited by: 3.

Introduction. TW Dra (P=2 d, BD +64°) is an Algol-type eclipsing binary star with a semi-detached configuration where the less massive component is close to its critical Roche spectral type for the primary component was classified as A5V while the secondary component is a K2-type giant (Yoon et al., ).It is the brighter star of the visual binary ADS and was Cited by:.

When two stars orbit each other and the orbital motion is detected spectroscopically from the changes in the Doppler shifts, the system is traditionally called a spectroscopic binary by astronomers, and the orbital solution based on the observed changes in radial velocities is called a spectroscopic orbit.

When the companion is a planet, the orbit of the host star is still called a.The Eclipsing Binary System CM Draconis. Using Lacy's light-curve solution and our spectroscopic orbit we derive individual radii of RA = ± and RB = ± Rsun. [email protected]{osti_, title = {ABSOLUTE PROPERTIES OF THE ECLIPSING BINARY STAR BF DRACONIS}, author = {Sandberg Lacy, Claud H and Torres, Guillermo and Fekel, Francis C and Sabby, Jeffrey A and Claret, Antonio}, abstractNote = {BF Dra is now known to be an eccentric double-lined F6+F6 binary star with relatively deep ( mag) partial eclipses.