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A blue depression in the optical spectra of M dwarfs
(2023-05-12)
A blue depression is found in the spectra of M dwarfs from 4000 to 4500A. This depression shows an increase toward lower temperatures though is particularly sensitive to gravity and metallicity. It is the single most ...
The metal rich abundance pattern - spectroscopic properties and abundances for 107 main-sequence stars
(2017-07-01)
We report results from the high resolution spectral analysis of the 107 metal rich (mostly [Fe/H]$\ge$7.67 dex) target stars from the Calan-Hertfordshire Extrasolar Planet Search program observed with HARPS. Using our ...