Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/3716
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dc.contributor.authorSagar, R-
dc.contributor.authorHawkins, M. R. S-
dc.contributor.authorCannon, R. D-
dc.date.accessioned2008-09-17T12:04:27Z-
dc.date.available2008-09-17T12:04:27Z-
dc.date.issued1990-01-
dc.identifier.citationMonthly Notices Royal Astronomical Society, Vol. 242, No. 1, pp. 167 - 176en
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/2248/3716-
dc.description.abstractA color-magnitude diagram for a large sample of stars in the Fornax dwarf spheroidal galaxy has been obtained from BV electronographic observations. These reach to the level of the horizontal branch, below V = 21 mag. The area of investigation is located about 18 arcmin away in a southwest direction from the center of the Fornax galaxy. The wide field of the McMullan camera enabled some 1300 stars to be measured and made possible an analysis of structure in the giant branch. The standard deviation of the intrinsic width of the giant branch is about 0.14 mag in (B-V) color at a given luminosity, which yields a standard deviation of 0.3 in Fe/H, if a spread in metallicity alone is responsible for the intrinsic width. Otherwise a combination of both variation in age from 3 to 17 billion yr and a spread in metallicity equivalent to a standard deviation of 0.27 in Fe/H can account for the intrinsic width of the giant branch. A comparison with galactic globular clusters as well as theoretical isochrones suggests a mean value of Fe/H = -1.5 + or - 0.1 for the Fornax giant branch stars.en
dc.language.isoenen
dc.publisherThe Royal Astronomical Societyen
dc.relation.urihttp://ads.iucaa.ernet.in/abs/1990MNRAS.242..167Sen
dc.subjectAstronomical photometryen
dc.subjectAsymptotic giant branch starsen
dc.subjectDwarf galaxiesen
dc.subjectColor-magnitude diagramen
dc.subjectGlobular clustersen
dc.subjectMetallicityen
dc.subjectStellar luminosityen
dc.titleThe giant branch of the Fornax dwarf spheroidal galaxyen
dc.typeArticleen
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