Sentences with phrase «velocity data over»
Planet «c» or «2» - A residual drift in the radial velocity data over several years suggest the presence of an even larger planet in an outer orbit, at about 3.73 AUs from 47 UMa (between the average orbital distances of Jupiter and the Main Asteroid Belt in the Solar System).
http://members.nova.org/
Planet «c» - A residual drift in the radial velocity data over a decade suggest the presence of even larger planets in outer orbits (Butler et al, 1999).
Not exact matches
The researchers measured the velocities of stars in Dragonfly 44 using data from Keck over six nights.
«Paul Butler and I have been obtaining precision radial velocity data of Kapteyn's star for over a decade at Keck, and were thus heavily invested in this work,» said Steve Vogt, a professor of astronomy at the University of California, Santa Cruz that contributed the data from Keck Observatory.
Previously discussed in a November 24, 2011 pre-print, the astronomers «surveyed a carefully chosen sample of 102 red dwarf stars in the southern skies over a six - year period» and found a «total of nine super-Earths (planets with masses between one and ten times that of Earth),» of which two orbiting within the habitable zones of Gliese 581 and Gliese 667 C. By combining all the radial - velocity data of red dwarf stars (including those without undetected planets) and examining the fraction of confirmed planets that was found, the astronomers were able to estimate the probable distribution of different types of planets around red dwarfs: for example, only 12 percent of such stars within 30 light - years may have giant planets with masses between 100 and 1,000 times that of the Earth (ESO news release; Bonfils et al, 2011; and Delfosse et al, 2011).
Time series of the observed amplitudes (in meters per second) of zonal wave numbers m = 6 (black), m = 7 (red), and m = 8 (blue) for the 15 - d running means of the meridional wind velocity at 300 hPa averaged over 37.5 ° N − 57.5 ° N for May − September 2012 and 2013, based on daily reanalysis data (41).