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Spectroscopic observations of convective patterns in the atmospheres of metal-poor stars
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Astronomical observatory.
1999 (English)In: ASTROPHYSICAL JOURNAL, ISSN 0004-637X, Vol. 526, no 2, 991-1000 p.Article in journal (Refereed) Published
Abstract [en]

Convective line asymmetries in the optical spectrum of two metal-poor stars, Gmb 1830 and HD 140283, are compared to those observed for solar metallicity stars. The line bisectors of the most metal-poor star, the subgiant HD 140283, show a significantly l

Place, publisher, year, edition, pages
UNIV CHICAGO PRESS , 1999. Vol. 526, no 2, 991-1000 p.
Keyword [en]
convection; line : profiles; stars : atmospheres; stars : late-type; stars : Population II; Sun : photosphere; SPECTRAL-LINE ASYMMETRIES; STELLAR GRANULATION; RADIAL-VELOCITIES; WAVELENGTH SHIFTS; OPTICAL-SPECTRUM; ACTIVITY CYCLE; SOLAR; SUN; MOTION; ORBI
Identifiers
URN: urn:nbn:se:uu:diva-85262OAI: oai:DiVA.org:uu-85262DiVA: diva2:113170
Note
Addresses: Prieto CA, Univ Texas, McDonald Observ, RIM 15-308, Austin, TX 78712 USA. Inst Astrofis Canarias, E-38200 La Laguna, Tenerife, Spain. Univ Texas, McDonald Observ, Austin, TX 78712 USA. Univ Texas, Dept Phys, Austin, TX 78712 USA. Univ Uppsala,Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2011-01-14

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