Metal Abundance of Red Clump Stars in Baade's Window

• Autorzy: Kubiak, M. , McWilliam, A. , Udalski, A. , Górski, K.
• Języki publikacji: EN

Abstrakty

EN

Thirteen red clump stars from Baade's window were observed with high resolution in the red part of the optical spectrum with the UVES echelle spectrograph at the Mount Paranal ESO Observatory. The model atmosphere abundance analysis placed their [Fe/H] values in a range from 0.0 to -1.52 dex. Present results, based on direct measurements of iron abundance, confirm former suggestions that the I-band brightness of the red clump giants only weakly depends on [Fe/H]. The determined values of [Fe/H] may contain a slight systematic error connected with still now unexplained difference in colors between stars in the Galactic bulge and in the solar vicinity.

Słowa kluczowe

EN

stars: abundances; galaxy: abundances; galaxy: center

• Czasopismo: Acta Astronomica
• Rocznik: 2002
• Tom: Vol. 52, No. 2
• Strony: 159--175
• Opis fizyczny: Bibliogr. 18 poz., tab., wykr.

Twórcy

autor

Kubiak, M.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw,

autor

McWilliam, A.

• Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena CA 91101, USA,

autor

Udalski, A.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw,

autor

Górski, K.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw,
• European Southern Observatory, Karl Schwarzschildstr. 2, Garching, Germany

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