401 citations · 6.1k across the 115 of their papers we have counts for
6 papers · 1 filter
The search for magnetic fields in mercury-manganese stars
V. Makaganiuk, O. Kochukhov, N. Piskunov +7
We performed a highly sensitive search for magnetic fields on a large set of HgMn stars. With the aid of a new polarimeter attached to the HARPS spectrometer at the ESO 3.6m-telesc…
The HARPS polarimeter
Frans Snik, Oleg Kochukhov, Nikolai Piskunov +8
We recently commissioned the polarimetric upgrade of the HARPS spectrograph at ESO's 3.6-m telescope at La Silla, Chile. The HARPS polarimeter is capable of full Stokes spectropola…
The Light Curve of the Weakly-Accreting T Tauri Binary KH 15D from 2005-10: Insights into the Nature of its Protoplanetary Disk
William Herbst, Katherine LeDuc, Catrina M. Hamilton +4
Photometry of the unique pre-main sequence binary system KH 15D is presented, spanning the years 2005-2010. This system has exhibited photometric variations and eclipses over the l…
NICMOS Observations of the Transiting Hot Jupiter XO-1b
Christopher J. Burke, P. R. McCullough, E. Bergeron +6
We refine the physical parameters of the transiting hot Jupiter planet XO-1b and its stellar host XO-1 using HST NICMOS observations. XO-1b has a radius Rp=1.21+/-0.03 RJup, and XO…
Gas Absorption in the KH 15D System: Further Evidence for Dust Settling in the Circumbinary Disk
S. M. Lawler, W. Herbst, S. Redfield +5
Na I D lines in the spectrum of the young binary KH 15D have been analyzed in detail. We find an excess absorption component that may be attributed to foreground interstellar absor…
Thermal Emission and Tidal Heating of the Heavy and Eccentric Planet XO-3b
Pavel Machalek, Tom Greene, Peter R. McCullough +5
We determined the flux ratios of the heavy and eccentric planet XO-3b to its parent star in the four IRAC bands of the Spitzer Space Telescope: 0.101% +- 0.004% at 3.6 micron; 0.14…