On the Oosterhoff dichotomy in the Galactic bulge - II. Kinematical distribution

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00511717" target="_blank" >RIV/67985815:_____/19:00511717 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1093/mnras/stz1484" target="_blank" >https://doi.org/10.1093/mnras/stz1484</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stz1484" target="_blank" >10.1093/mnras/stz1484</a>

Result language
angličtina
Original language name
On the Oosterhoff dichotomy in the Galactic bulge - II. Kinematical distribution
Original language description
We present a kinematical study of RR Lyrae stars associated with two Oosterhoff groups in the Galactic bulge, We used data published in the first paper of the series, plus proper motions from the Gaia Data Release 2, and radial velocities from the literature, A 6D kinematical and spatial solution was obtained for 429 RR Lyrae stars, We use a model of the Galactic gravitational potential to infer stellar orbits. We did not find a difference between the Oosterhoff groups in the individual components of the space velocity. We report that foreground and background stars with respect to the Galactic bulge stand out in the mean V velocity component, which we interpret as a sign of the Galactic rotation.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GC17-01752J" target="_blank" >GC17-01752J: Tautenburg-Ondřejov radial velocity follow-up of transiting planetary systems</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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