Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apjs...38...29s&link_type=abstract
Astrophysical Journal Supplement Series, vol. 38, Sept. 1978, p. 29-38.
Astronomy and Astrophysics
Astrophysics
8
Late Stars, Line Spectra, Spectrum Analysis, Stellar Atmospheres, Stellar Spectrophotometry, Ultraviolet Spectra, Absorption Spectra, Emission Spectra, Near Ultraviolet Radiation, Stellar Spectra, Tables (Data)
Scientific paper
Results are reported for a study of the near-UV spectrum of Arcturus as recorded with a balloon-borne echelle spectrograph-vidicon detector system in the spectral region from 2700 to 3300 A at 0.1-A resolution. A condensed version of the Arcturus spectrum is provided along with profile descriptions and identifications for 383 absorption features detected in the near-UV. Elements definitely present include Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Zr, and La. Elements with spectral features indicating possible presence include Be, O, S, K, Ga, Ge, Nb, Sn, Gd, and Bi. Line blocking is shown to be extensive in the spectral region studied, and eight possible continuum 'windows' are found in the near-UV. Emission lines of chromospheric origin due to Mg II, Fe I, Fe II, and possibly Cr II are also identified in the region from 2736 to 3303 A. It is noted that the Fe I emission lines at 2823 and 2844 A are optically pumped.
Stencel Robert E.
van der Hucht Karel A.
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