中文
相关论文

相关论文: The RAdial Velocity Experiment (RAVE): Fourth data…

200 篇论文

We investigate the Milky Way Galaxy's radial and vertical metallicity gradients using a sample of 47,406 red clump stars from the RAVE DR4. This sample is more than twice the size of the largest sample in the literature investigating radial…

星系天体物理 · 物理学 2016-09-28 O. Onal Tas , S. Bilir , G. M. Seabroke , S. Karaali , S. Ak , T. Ak , Z. F. Bostanci

A Bayesian approach to the determination of stellar distances from photometric and spectroscopic data is presented and tested both on pseudodata, designed to mimic data for stars observed by the RAVE survey, and on the real stars from the…

天体物理仪器与方法 · 物理学 2015-05-18 Benedict Burnett , James Binney

Since Gaia DR2 was released, many velocity structures in the disk have been revealed such as large scale ridge-like patterns in the phase space. Both kinematic information and stellar elemental abundances are needed to reveal their…

星系天体物理 · 物理学 2019-12-23 Xilong Liang , Jingkun Zhao , Yuqin Chen , Wenbo Zuo , Jiajun Zhang , Jia Zhu , Gang Zhao

The Data Release 1 of the Radial-Velocity Experiment (RAVE DR1, 24 748 stars) is compared with the May 15, 2006 version of the Pulkovo Compilation of Radial Velocities (PCRV, 35 495 stars). RAVE DR1 includes mostly $9^m-13^m$ stars, while…

太阳与恒星天体物理 · 物理学 2016-06-29 George Gontcharov

We present the second release of value-added catalogues of the LAMOST Spectroscopic Survey of the Galactic Anticentre (LSS-GAC DR2). The catalogues present values of radial velocity $V_{\rm r}$, atmospheric parameters --- effective…

Context. In order to overcome the radial velocity (RV) precision barrier imposed by stellar variability, there has been a surge of software aimed at simulating and modeling these activity patterns. Aims. We present Analyzing Radial Velocity…

天体物理仪器与方法 · 物理学 2025-07-28 K. Al Moulla

We present revised basic stellar astrophysical parameters: masses, luminosities, ages and radii for 342 stars from PennState-Toru\'n Centre for Astronomy Planet Search. Atmospheric parameters for 327 stars are available from Zieli\'nski…

太阳与恒星天体物理 · 物理学 2016-03-02 M. Adamczyk , B. Deka-Szymankiewicz , A. Niedzielski

We present a compiled catalogue of effective temperatures, surface gravities, iron and magnesium abundances, distances, velocity components, and orbital elements for stars in the solar neighborhood. The atmospheric parameters and iron…

天体物理学 · 物理学 2009-11-10 T. V. Borkova , V. A. Marsakov

Although primarily aimed at the galactic archeology and evolution, automated all-sky spectroscopic surveys (RAVE, SDSS) are also a valuable source for the binary star research community. Identification of double-lined spectra is easy and it…

太阳与恒星天体物理 · 物理学 2009-10-08 G. Matijevic , T. Zwitter , the RAVE Collaboration

Under certain conditions, stellar radial velocities can be determined from astrometry, without any use of spectroscopy. This enables us to identify phenomena, other than the Doppler effect, that are displacing spectral lines. The change of…

太阳与恒星天体物理 · 物理学 2021-08-18 Lennart Lindegren , Dainis Dravins

GAIA astrometric mission of ESA will be very efficient in discovering binary and multiple stars with any orbital period, from minutes to millions of years. Main parameters of the revised mission design are presented. Next we estimate the…

天体物理学 · 物理学 2007-05-23 Tomaz Zwitter , Ulisse Munari

We present evidence from the RAdial Velocity Experiment (RAVE) survey of chemically separated, kinematically distinct disc components in the solar neighbourhood. We apply probabilistic chemical selection criteria to separate our sample into…

The purpose of this research note is to present a reliable list of clean spectral lines in the Calcium Triplet region at medium resolution ~7500, for chemical abundance analysis, in the framework of the RAdial Velocity Experiment (RAVE).…

太阳与恒星天体物理 · 物理学 2018-11-16 Guillaume Guiglion , Cristina Chiappini , Marica Valentini , Matthias Steinmetz

Context. Galactic open clusters (OCs) mainly belong to the young stellar population in the Milky Way disk, but are there groups and complexes of OCs that possibly define an additional level in hierarchical star formation? Current…

High-velocity stars are interesting targets to unveil the formation of the Milky Way. In fact they can be recently accreted from an infalling dwarf galaxies or they can be the result of a turbulent merging of galaxies. Gaia is providing the…

We analyzed series of spectra obtained for twelve stable RRc stars observed with the echelle spectro- graph of the du Pont telescope at Las Campanas Observatory and we analyzed the spectra of RRc Blazhko stars discussed by Govea et al.…

太阳与恒星天体物理 · 物理学 2017-10-18 Christopher Sneden , George W. Preston , Merieme Chadid , Monika Adamow

Aims. The Radial Velocity Spectrometer (RVS) on board the ESA satellite mission Gaia has no calibration device. Therefore, the radial velocity zero point needs to be calibrated with stars that are proved to be stable at a level of 300 m/s…

We report new constraints on the local escape speed of our Galaxy. Our analysis is based on a sample of high velocity stars from the RAVE survey and two previously published datasets. We use cosmological simulations of disk galaxy formation…