The Radial Velocity Experiment (RAVE): First Data Release-猫眼课题宝

DOI：

10.1086/506564

发表时间：

2006-06

期刊：

The Astronomical Journal

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

M. Steinmetz;T. Zwitter;A. Siebert;F. Watson;K. Freeman;U. Munari;R. Campbell;M. Williams;G. Seabroke;R. Wyse;Q. Parker;O. Bienaymé;S. Roeser;B. Gibson;G. Gilmore;E. Grebel;A. Helmi;J. Navarro;D. Burton;C. Cass;J. Dawe;K. Fiegert;M. Hartley;K. Russell;W. Saunders;H. Enke;J. Bailin;J. Binney;J. Bland-Hawthorn;C. Boeche;W. Dehnen;D. Eisenstein;N. Evans;M. Fiorucci;J. Fulbright;O. Gerhard;U. Jauregi;A. Kelz;L. Mijović;I. Minchev;G. Parmentier;J. Peñarrubia;A. Quillen;M. Read;G. Ruchti;R. Scholz;A. Siviero;M. Smith;R. Sordo;L. Veltz;S. Vidrih;R. von Berlepsch;B. Boyle;E. Schilbach

我们介绍了径向速度实验(RAVE)的第一次数据发布，这是一项雄心勃勃的光谱调查，利用英国-澳大利亚天文台1.2米英国施密特望远镜上的六度场多目标光谱仪测量了多达100万颗恒星的径向速度和恒星大气参数(温度、金属丰度和表面重力)。RAVE计划始于2003年，获得了南半球从Tycho-2和SuperCosmos星表中提取的南半球恒星的中等分辨率光谱(中位数R=7500)，这些光谱来自Tycho-2和SuperCosmos星表，星等范围为9&lt；i&lt；12。本文描述了第一次数据发布，其中包含24,748颗恒星的径向速度(包括重新观测时的25,274次测量)。这些数据是在2003年4月11日至2004年4月3日之间的67个夜晚获得的。此次发布的数据中的总天空覆盖率为∼4760°2。观测光谱的平均信噪比为29.5，80%的径向速度的不确定度优于3.4公里S-1。结合内部误差和零点误差，得到的模式为2公里S-1。重复观测被用来评估我们的径向速度解的稳定性，结果是方差为2.8公里的S-1。我们证明了第一个数据集得到的径向速度没有显示出任何与颜色或信噪比有关的系统趋势。除了来自主要光学和红外星表(Tycho-2，USNO-B，Denis和Two Micron All Sky Survey)的光度学数据外，数据发布中还用STARnet2.0、Tycho-2和SuperCosmos的自行数据补充了RAVE的径向速度。数据发布可通过RAVE网站访问。

We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity, and surface gravity) of up to one million stars using the Six Degree Field multiobject spectrograph on the 1.2 m UK Schmidt Telescope of the Anglo-Australian Observatory. The RAVE program started in 2003, obtaining medium-resolution spectra (median R = 7500) in the Ca-triplet region (8410-8795 Å) for southern hemisphere stars drawn from the Tycho-2 and SuperCOSMOS catalogs, in the magnitude range 9 < I < 12. The first data release is described in this paper and contains radial velocities for 24,748 individual stars (25,274 measurements when including reobservations). Those data were obtained on 67 nights between 2003 April 11 and 2004 April 3. The total sky coverage within this data release is ∼4760 deg2. The average signal-to-noise ratio of the observed spectra is 29.5, and 80% of the radial velocities have uncertainties better than 3.4 km s-1. Combining internal errors and zero-point errors, the mode is found to be 2 km s-1. Repeat observations are used to assess the stability of our radial velocity solution, resulting in a variance of 2.8 km s-1. We demonstrate that the radial velocities derived for the first data set do not show any systematic trend with color or signal-to-noise ratio. The RAVE radial velocities are complemented in the data release with proper motions from Starnet 2.0, Tycho-2, and SuperCOSMOS, in addition to photometric data from the major optical and infrared catalogs (Tycho-2, USNO-B, DENIS, and the Two Micron All Sky Survey). The data release can be accessed via the RAVE Web site.

The Radial Velocity Experiment (RAVE): First Data Release

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