By Donald W. Stokes
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Extra resources for A Guide to Bird Behavior, Volume I (Stokes Nature Guides)
G. Neilson & H. L. Moses 338 progress Aneuploidy and cancer H. Rajagopalan & C.
UT, universal time. Figure 2 Fourier amplitude spectra of the two short sequences made on Procyon. 5 mHz are evident. accuracy in Doppler measurement in order to detect extrasolar planets by means of radial-velocity measurements. During its commissioning, we tested its short-time precision on a sample of bright solar-type stars, including Procyon. Our measurements on Procyon indicate that there are periodic oscillations of its surface that have a typical period of 18 min (Fig. 1). Figure 2 presents the Fourier amplitude spectra of the two short time-series obtained on Procyon.
Measures a momentum average and is therefore not a sensitive probe when the signal is strongly momentum dependent, as it is for these materials. Existing angleresolved photoemission (ARPES) data show that in the strongly overdoped regime (with Tcǃ58 K) there is a prominent ‘kink’ that is indicative of a peak in the self-energy2 (Fig. 1). Figure 1b reveals a clear dispersion kink in the superconducting state near 40 meV (arrow). The strong presence of the I Min T. -X. Shen*, A. D. Gromko†, Z. Sun†, D.