STRONTIUM ABUNDANCES IN COOL DWARF STARS OF GALACTIC THIN AND THICK DISKS
Journal Title: Odessa Astronomical Publications - Year 2016, Vol 29, Issue
Abstract
We revise the strontium abundances in FGK stars with metallicities ranging from −1.0 < [Fe/H] < +0.3. The observed stars belong to the substructures of the Galaxy thick and thin discs. The observations were conducted using the1.93 mtelescope at Observatoire de Haute-Provence (OHP, France) equipped with the echelle type spectrographs ELODIE and SOPHIE. The values of the Sr abundance were obtained using synthetic spectra using LTE model atmosphere. The comparison of our data with models of chemical evolution was made.
Authors and Affiliations
T. I. Gorbaneva, T. V. Mishenina
Keywords
Related Articles
- EP ID EP374646
- DOI 10.18524/1810-4215.2016.29.84992
- Views 93
- Downloads 0
PROBING AND IDENTIFYING NEW PHYSICS SCENARIOS AT INTERNATIONAL LINEAR COLLIDER
Many new physics scenarios are described bycontact-like effective interactions that can manifest themselves in e+e− collisions through deviations of the observables from the Standard Model predictions. If such a deviation...
MOLYBDENUM AND RUTHENIUM IN THE GALAXY
We present a brief overview of the molybdenum and ruthenium present-day nucleosynthesis calculations and abundance determinations in stars belonging to different substructures (populations) in the Galaxy. The following...
CROSS-MATCHING OF VERY LARGE CATALOGS
Modern astronomical catalogs and sky surveys, that contain billions of objects, belong to the “big data” data class. Existing available services have limited functionality and do not include all required and available ca...
METHOD FOR CALCULATING ORBITS OF NEAR–EARTH ASTEROIDS OBSERVED WITH TELESCOPE OMT-800
One of the frame processing techniques, as well as an example of further use of the obtained results to calculate an asteroid’s orbit are given in the present paper. The application of frame combination method to improve...
OBTAINING POSITIONS OF ASTEROIDS FROM DIGITIZED PROCESSING OF PHOTOGRAPHIC OBSERVATIONS IN BALDONE OBSERVATORY (CODE 069)
Digital processing of photographic plates of star fields allows to determine with high accuracy the coordinates and stellar magnitudes for all registered objects on these plates. The processing results can be used for a...