Spectroscopic evidence for starspots in the G dwarf HD 1835

Details Spectroscopic evidence for starspots in the G dwarf HD 1835 Spectroscopic evidence for starspots in the G dwarf HD 1835

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283l..17c&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 283, Aug. 1, 1984, p. L17-L20.

Astronomy and Astrophysics

Astrophysics

8

Dwarf Stars, G Stars, Late Stars, Starspots, Stellar Spectra, Cross Correlation, Molecular Spectra, Radial Velocity, Sunspots

Scientific paper

High signal-to-noise ratio spectra of HD 1835 (G2 V) reveal very weak
lines of titanium oxide and calcium hydride. The authors show that these
are unlikely to come from an M dwarf companion. The molecular lines
probably originate in starspot umbrae, which cover about 3% of the
stellar surface.

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