4 papers
Turbulent Diffusion in the Photosphere as Derived from Photospheric Bright Point Motion
V. I. Abramenko, V. Carbone, V. Yurchyshyn +5
On the basis of observations of solar granulation obtained with the New Solar Telescope (NST) of Big Bear Solar Observatory, we explored proper motion of bright points (BPs) in a q…
Orbital Motion of HR 8799 b,c, d using Hubble Space Telescope data from 1998: Constraints on Inclination, Eccentricity and Stability
Remi Soummer, J. Brendan Hagan, Laurent Pueyo +3
HR 8799 is currently the only multiple-planet system that has been detected with direct imaging, with four giant planets orbiting at large separations from this young late A star.…
Exploring the Galaxy Mass-Metallicity Relation at z~3-5
Tanmoy Laskar, Edo Berger, Ranga-Ram Chary
Long-duration gamma-ray bursts (GRBs) provide a premier tool for studying high-redshift star-forming galaxies thanks to their extreme brightness and association with massive stars.…
Evidence of Shock-Driven Turbulence in the Solar Chromosphere
K. P. Reardon, F. Lepreti, V. Carbone +1
We study the acoustic properties of the solar chromosphere in the high-frequency regime using a time sequence of velocity measurements in the chromospheric Ca II 854.2 nm line take…