A census of AGB stars in Local Group galaxies. III. The dwarf spheroidal And II

Details A census of AGB stars in Local Group galaxies. III. The dwarf spheroidal And II A census of AGB stars in Local Group galaxies. III. The dwarf spheroidal And II

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...427..613k&link_type=abstract

Astronomy and Astrophysics, v.427, p.613-619 (2004)

Astronomy and Astrophysics

Astrophysics

11

Stars: Agb And Post-Agb, Stars: Carbon, Galaxies: Local Group, Galaxies: Individual: And Ii, Techniques: Photometric, Surveys

Scientific paper

Our photometric survey of Local Group galaxies, using a four filter technique based on the method of Wing (\cite{Wing71}) allows the identification and subsequent characterization of their late-type stellar content. Two narrow band filters centred on molecular bands of TiO and CN allow us to distinguish between AGB stars of different chemistries [M-type (O-rich) and C-type (C-rich)]. The faint dwarf spheroidal galaxy And II, a member of the M 31 subgroup, was surveyed. From photometry in V and i as well as in the narrow band filters TiO and CN we were able to identify 7 new AGB carbon stars, to derive their mean absolute and bolometric magnitude Mbol, their luminosity function, and their spatial distribution. We are unable to establish the true C/M ratio because the few M stars of And II are overwhelmed by foreground Galactic M stars.
Based on observations made with the Nordic Optical Telescope operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias.
Table A.1. is only available in electronic at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/427/613}}

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