Assessment of the near infrared identification of carbon stars. II. The local group galaxies IC 1613 and NGC 3109

Details Assessment of the near infrared identification of carbon stars. II. The local group galaxies IC 1613 and NGC 3109 Assessment of the near infrared identification of carbon stars. II. The local group galaxies IC 1613 and NGC 3109

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009a%26a...493.1075b&link_type=abstract

Astronomy and Astrophysics, Volume 493, Issue 3, 2009, pp.1075-1080

Astronomy and Astrophysics

Astrophysics

5

Stars: Agb And Post-Agb, Stars: Carbon, Galaxies: Dwarf

Scientific paper

Context: Thousands of C stars have been identified in Local Group galaxies using narrow band photometry. To survey C stars at larger distances and alternative to the narrow-band approach is needed. Aims: We obtain, from ESO Archive data, NIR magnitudes and colours of previously known C stars in two dwarf irregular Local Group galaxies, namely IC 1613 and NGC 3109. Methods: We compare the NIR magnitudes and colours of the C star populations, previously identified from narrow band techniques to estimate the star formation history of their intermediate-age populations. Results: We demonstrate that the photometric properties of C stars show a wider range in the NIR than in the optical. As confirmed by models we see, among the four galaxies investigated with a 0.7 dex metallicity range, little if any metallicity effect in the C star colour distribution.
This publication makes use of data products from the ESO Archive.
Full Tables 2 and 3 are only available in electronic form at http://www.aanda.org

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