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相关论文: The local standard of rest from data on young obje…

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To estimate the peculiar velocity of the Sun with respect to the Local Standard of Rest (LSR), we used young objects in the Solar neighborhood with distance measurement errors within 10%-15%. These objects were the nearest Hipparcos stars…

星系天体物理 · 物理学 2018-03-14 V. V. Bobylev , A. T. Bajkova

We re-estimate the peculiar velocity of the Sun with respect to the local standard of rest using a sample of local stars within 600 pc of the Sun, selected from the LAMOST Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC). The…

星系天体物理 · 物理学 2015-06-23 Yang Huang , Xiaowei Liu , Haibo Yuan , Maosheng Xiang , Zhiying Huo , Bingqiu Chen , Yong Zhang , Yonghui Hou

Context. An accurate estimate of the local standard of rest (LSR) is required to determine key parameters used in approximate galactic mass models and to understand Galactic structure and evolution. However, authors are often forced to base…

天体物理学 · 物理学 2009-04-21 Charles Francis , Erik Anderson

We have tested the method of determining the solar Galactocentric distance R_0 and Galactic rotation velocity $V_0$ modified by Sofue et al. using near-solar-circle objects. The motion of objects relative to the local standard of rest has…

星系天体物理 · 物理学 2013-01-01 V. V. Bobylev

We analyze a sample of 82850 stars from the RAVE survey, with well-determined velocities and stellar parameters, to isolate a sample of 18026 high-probability thin-disc dwarfs within 600 pc of the Sun. We derive space motions for these…

To study the peculiarities of the Galactic spiral density wave, we have analyzed the space velocities of Galactic Cepheids with proper motions from the Hipparcos catalog and line-of-sight velocities from various sources. First, based on the…

星系天体物理 · 物理学 2012-12-20 V. V. Bobylev , A. T. Bajkova

We re-examine the stellar kinematics of the Solar neighbourhood in terms of the velocity of the Sun with respect to the local standard of rest. We show that the classical determination of its component V_sun in the direction of Galactic…

星系天体物理 · 物理学 2015-05-14 R. Schoenrich , J. Binney , W. Dehnen

We reanalyse the measurements of parallax, proper motion, and line-of-sight velocity for 18 masers in high mass star-forming regions presented by Reid et al. (2009). We use a likelihood analysis to investigate the distance of the Sun from…

星系天体物理 · 物理学 2015-05-13 Paul J. McMillan , James J. Binney

Based on published sources, we have created a kinematic database on 220 massive (>10 solar masses) young Galactic star systems located within <3 kpc of the Sun. Out of them, approximately 100 objects are spectroscopic binary and multiple…

星系天体物理 · 物理学 2013-07-08 V. V. Bobylev , A. T. Bajkova

The sample of classic Cepheids with known distances and line-of-sight velocities is supplemented by the proper motions from the Gaia DR1 catalog. From spatial velocities of 260 stars the components of the peculiar Solar velocity:…

星系天体物理 · 物理学 2023-05-31 V. V. Bobylev

Stellar radial velocities play a fundamental role in the discovery of extrasolar planets and the measurement of their physical parameters as well as in the study of stellar physical properties. We investigate the impact of the solar…

地球与行星天体物理 · 物理学 2016-03-02 A. F. Lanza , P. Molaro , L. Monaco , R. D. Haywood

It is now recognised that the traditional method of calculating the LSR fails. We find an improved estimate of the LSR by making use of the larger and more accurate database provided by XHIP and repeating our preferred analysis from Francis…

星系天体物理 · 物理学 2014-05-13 Charles Francis , Erik Anderson

The young star velocity field is analysed by means of a galactic model which takes into account solar motion, differential galactic rotation and spiral arm kinematics. We use two samples of Hipparcos data, one containing O- and B-type stars…

天体物理学 · 物理学 2009-11-06 D. Fernandez , F. Figueras , J. Torra

We use about 200,000 FGK type main-sequence stars from the LAMOST DR1 data to map the local stellar kinematics. With the velocity de-projection technique, we are able to derive the averaged 3 dimensional velocity and velocity ellipsoids…

星系天体物理 · 物理学 2017-12-06 Hai-Jun Tian , Chao Liu , Jeffrey L. Carlin , Yong-Heng Zhao , Xue-Lei Chen , Yue Wu , Guang-Wei Li , Yong-Hui Hou , Yong Zhang

Open star clusters from the MWSC (Milky Way Star Clusters) catalogue have been used to determine the Galactic rotation parameters. The circular rotation velocity of the solar neighborhood around the Galactic center has been found from data…

星系天体物理 · 物理学 2016-09-30 V. V. Bobylev , A. T. Bajkova , K. S. Shirokova

We have studied a sample containing about 6000 OB stars with proper motions and trigonometric parallaxes from the Gaia DR2 catalogue. The following parameters of the angular velocity of Galactic rotation have been found:…

星系天体物理 · 物理学 2019-06-26 V. V. Bobylev , A. T. Bajkova

We have selected a sample of 326 young $(\log t<8)$ open star clusters with the proper motions and distances calculated by various authors from Gaia DR2 data. The mean values of their line-of-sight velocities have also been taken from…

星系天体物理 · 物理学 2019-03-25 V. V. Bobylev , A. T. Bajkova

We consider three samples of O- and B-type stars from the solar neighborhood 0.6--4 kpc for which we have taken the distances, line-of-sight velocities, and proper motions from published sources. The first sample contains 120 massive…

星系天体物理 · 物理学 2015-07-30 V. V. Bobylev , A. T. Bajkova

We have analyzed the kinematics of open star clusters (OSCs) with the proper motions and distances calculated by Hao et al. based on Gaia EDR3 data. The mean line-of-sight velocities are known for a number of clusters from this list. We…

星系天体物理 · 物理学 2022-03-25 V. V. Bobylev , A. T. Bajkova

Based on Cepheids located near the solar circle, we have determined the Galactocentric distance of the Sun $R_0$ and the Galactic rotation velocity at the solar distance $V_0$. For our analysis we used a sample of $\sim$200 classical…

太阳与恒星天体物理 · 物理学 2023-12-12 Vadim V. Bobylev
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