Open AccessHigh‐resolution stellar and interstellar spectra of HD 100340
Author(s) -
Ryans R. S. I.,
Keenan F. P.,
Rolleston W. R. J.,
Sembach K. R.,
Davies R. D.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02395.x
Subject(s) - physics , astrophysics , spectral line , halo , astronomy , high resolution , star (game theory) , stars , galactic halo , interstellar medium , galaxy , remote sensing , geology
We present new, high‐resolution, high signal‐to‐noise ratio, optical and 21‐cm H I observations of the faint blue halo star HD 100340. A differential abundance analysis with respect to the Galactic disc star HR 2387 shows no significant peculiarities. We find that HD 100340 lies at a distance of 3 kpc, and a kinematical analysis strongly supports a `runaway star' origin. We also present improved cloud models for three intermediate velocity clouds seen in Ca II K or H I towards HD 100340.