The Small Magellanic Cloud star cluster NGC 458. A new UBVI photometric study*
Isaac Newton Institute of Chile, Ministerio de Educacion de Chile, Casilla 8-9, Correo 9, Santiago, Chile e-mail: email@example.com
2 Institute of Astronomy, Bulgarian Academy of Sciences and Isaac Newton Institute of Chile Bulgarian Branch, 72 Tsarigradsko chaussèe, 1784 Sofia, Bulgaria e-mail: firstname.lastname@example.org
3 Department of Astronomy, Sofia University and Isaac Newton Institute of Chile Bulgarian Branch, 1164 Sofia, Bulgaria e-mail: email@example.com
Accepted: 7 January 2003
We present a new photometry of the Small Magellanic Cloud star cluster NGC 458 in UBVI filters. We determine the reddening . By comparison with the isochrones by Bertelli et al. (1994) we derive an age of ≈140 Myr. Three candidate blue straggler stars are proposed. The evolved “blue loop” stars of NGC 458 have masses between 4 and 5 and are hotter than model predictions.
Key words: stars: Hertzsprung-Russell (HR) and C-M diagrams / galaxies: stellar content / galaxies: Magellanic clouds / galaxies: individual: SMC / galaxies: stars clusters
© ESO, 2003