منابع مشابه
Recent Behavior of Velocity: Alternative Measures of Money
The unusual weakness of the M2 monetary aggregate over the past year or so has raised concerns about implications for the economy and has brought into question the reliability of this measure as a guide for policy. These concerns heightened last summer as initial reports indicated that M2 declined in the third quarter, leaving it around the lower bound of its target range. Historically, such sh...
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The radial velocity technique was utilized to make the first exoplanet discoveries and continues to play a major role in the discovery and characterization of exoplanetary systems. In this chapter we describe how the technique works, and the current precision and limitations. We then review its major successes in the field of exoplanets. With more than 250 planet detections, it is the most prol...
متن کاملCarbon-Rich Mira Variables: Radial Velocities and Distances
Optical radial velocities have been measured for 38 C-type Mira variables. These data together with others in the literature are used to study the differences between optical and CO mm observations for C-Miras and the necessary corrections to the optical velocities are derived in order to obtain the true radial velocities of the variables. The difference between absorption and emission line vel...
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We present local least squares and regularization frameworks for computing 3D velocity (3D optical flow) from 3D radial velocity measured by a Doppler radar. We demonstrate the performance of our algorithms quantitatively on synthetic radial velocity data and qualitatively on real radial velocity data, obtained from the Doppler radar at Kurnell Radar station, Botany Bay, New South Wales, Austra...
متن کاملRAVE: The RAdial Velocity Experiment
RAVE (RAdial Velocity Experiment) is an ambitious program to conduct an all-sky survey (complete to V = 16) to measure the radial velocities, metallicities and abundance ratios of 50 million stars using the 1.2-m UK Schmidt Telescope of the Anglo-Australian Observatory (AAO), together with a northern counterpart, over the period 2006 2010. The survey will represent a giant leap forward in our u...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1952
ISSN: 0004-6256
DOI: 10.1086/106685