Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...377l..45c&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 377, Aug. 10, 1991, p. L45-L48.
Astronomy and Astrophysics
Astrophysics
43
Chromosphere, Hubble Space Telescope, K Stars, Late Stars, Spectrographs, Ultraviolet Spectra, Emission Spectra, High Resolution, Line Spectra
Scientific paper
The K5 III star Alpha Tau was observed with the Goddard High Resolution Spectrograph on November 27, 1990 as part of the Science Assessment Program for the HST. The spectra show intersystem and permitted chromospheric emission lines of semiforbidden C II and Si II, Fe II, Fe I, Ni II, and Co II. Resolved profiles of the semiforbidden C II lines indicate a complex chromospheric turbulent velocity distribution with mean value of roughly 24 km/s, while their observed wavelengths indicate a 4 km/s downflow of the semiforbidden C II plasma. Twenty-five new emission lines have been found in the 2320-2370 A region, 17 of which have been identified with the aid of Skylab data obtained above the solar limb, including four lines from Co II (UV 8) and an Fe I (UV 12) line.
Ake Thomas B.
Brown Alexander
Carpenter Kenneth G.
Ebbets Dennis C.
Linsky Jeffrey L.
No associations
LandOfFree
First results from the Goddard High-Resolution Spectrograph - The chromosphere of Alpha Tauri does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with First results from the Goddard High-Resolution Spectrograph - The chromosphere of Alpha Tauri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First results from the Goddard High-Resolution Spectrograph - The chromosphere of Alpha Tauri will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1725695