Abundance analysis of four members of the metal-rich open cluster NGC 6253

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Montalto, M (Author) Other; N.C. Santos (Author) FCUP; Villanova, S (Author) Other; G. Pace (Author) FCUP; Piotto, G (Author) Other; Desidera, S (Author) Other; De Marchi, F (Author) Other; Pasquini, L (Author) Other; Saviane, I (Author) Other

Journal

Title: Monthly Notices of the Royal Astronomical Society

Vol. 423

Pages: 3039-3048

ISSN: 0035-8711

Publisher: Oxford University Press

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 7 Citations

Other information

Authenticus ID: P-002-8E0

DOI: 10.1111/j.1365-2966.2012.21040.x

Abstract (EN): We report on VLT/UVES high-resolution spectra of four members of the old metal-rich open cluster NGC 6253: a main-sequence star, two red-clump stars and a blue straggler. We performed equivalent width analysis and derived Fe, Si, Ca, Ti, Cr and Ni abundances as well as abundance ratios. For our main-sequence star, we obtained a metallicity of (rms), whereas for the two giants we found that our metallicities are on average +0.19 +/- 0.13 (rms), lower than what was determined for the same stars in previous studies. We also found that, within the uncertainties, the abundance ratios of a and iron-peak elements match those in the solar surroundings, with the possible exception of Si in two giant stars in our sample.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10