Details

Autor(en) / Beteiligte

• Federici, L
• Cacciari, C
• Bellazzini, M
• Pecci, F Fusi
• Galleti, S
• Perina, S

Titel

The horizontal branch luminosity vs. metallicity in M31 globular clusters

Ist Teil von

• Astronomy and astrophysics (Berlin), 2012-08, Vol.544, p.1-1

Erscheinungsjahr

2012

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The authors' current knowledge about the M 31 globular clusters (GC) is similar to their knowledge of the Milky Way GCs in the 1960s-1970s. The authors collected the BVI data for 48 old GCs in M 31 and analysed them by applying the same methods and procedures to all objects. They obtained a set of homogeneous colour-magnitude diagrams (CMD) that were best-fitted with the fiducial CMD ridge lines of selected Milky Way template GCs. There are three main results of this study: i) the relation ..., which is obtained from the above parameters and is calibrated on the distances of the template Galactic GCs; ii) the distance modulus to M 31 of ..., obtained by normalising this relation at the reference value of Fe/H = -1.5 to a similar relation using ... . This is the first determination of the distance to M 31 based on the characteristics of its GC system, and iii) the distance to the Large Magellanic Cloud. (ProQuest: ... denotes formulae/symbols omitted.)