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Flares from small to large: X-ray spectroscopy of Proxima Centauri with XMM-Newton
M. Guedel, M. Audard, F. Reale +2
(Abridged) We report results from a comprehensive study of the nearby M dwarf Proxima Centauri with the XMM-Newton satellite. We find strongly variable coronal X-ray emission, with…
HST/STIS High Resolution Echelle Spectra of alpha Centauri A (G2 V)
Isabella Pagano, Jeffrey L. Linsky, Jeff Valenti +1
We describe and analyze HST/STIS observations of the G2 V star alpha Centauri A (alpha Cen A, HD 128620), a star similar to the Sun. The high resolution echelle spectra obtained wi…
The Structure of the Local Interstellar Medium. II. Observations of D I, C II, N I, O I, Al II, and Si II toward Stars within 100 parsecs
Seth Redfield, Jeffrey L. Linsky
Moderate and high-resolution measurements (R ~ 40,000) of interstellar resonance lines of D I, C II, N I, O I, Al II, and Si II (light ions) are presented for all available observe…
D/H as a Measure of Chemical Imhomogeneity in our Galaxy
Jeffrey L. Linsky
Accurate measurements of interstellar deuterium abundances along lines of sight extending out to several hundred parsecs by FUSE and other instruments is making D/H a useful tool f…
Atomic Deuterium/Hydrogen in the Galaxy
Jeffrey L. Linsky
An accurate value of the deuterium/hydrogen (D/H) ratio in the local interstellar medium (LISM) and a better understanding of the D/H variations with position in the Galactic disk…
Complex C: A Low-Metallicity High-Velocity Cloud Plunging into the Milky Way
T. M. Tripp, B. P. Wakker, E. B. Jenkins +8
(Abridged) We present a new high-resolution (7 km/s FWHM) echelle spectrum of 3C 351 obtained with STIS. 3C 351 lies behind the low-latitude edge of high-velocity cloud Complex C,…