Free Access
Volume 562, February 2014
Article Number A24
Number of page(s) 37
Section Galactic structure, stellar clusters and populations
Published online 03 February 2014

Online material

Appendix A

This appendix presents the spectra of C stars listed in Table 1 of the paper (eight halo C stars, four FBS halo stars, three C stars in Carina, and eight Fornax C stars). The CN and C2 bands dominate these spectra, occasionally with Hα in emission (indicated). The strong absorption feature at 7600 Å  is due to telluric O2. The scaling factors f to obtain the ordinates in erg s-1 cm-2 Å-1 is given in Table A.1. The FBS stars have no flux calibration. Note that almost all these stars are subject to variability.

Table A.2 presents the list of objects in the field of Fornax for which EFOSC2 spectroscopy was analysed and which are not C stars. These stars are mostly M-type foreground dwarfs, except for the object 2MASS J024000.78−341812.2, which appears fuzzy along the slit in the spectra and is probably a galaxy.

In Table A.4, the periodic variables found with Catalina and LINEAR data are listed. In the first column, the objects named “SDSS Green #nnn” are taken from Table 1 of Green (2013), where nnn is the object rank in his table. Similarly, the object named 2MASS Gizis #32 comes from Table 1 of Gizis (2002). The names “mxxx” come from the lists in Paper I to IV.

Table A.1

Scaling factors f for spectra shown in this appendix.

Table A.2

Objects in the direction of Fornax that are not carbon stars.

Table A.3

Average 2MASS JHK colours of halo carbon stars.

Table A.4

Halo C stars with periods.

thumbnail Fig. A.1

Spectra of halo carbon stars.

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thumbnail Fig. A.2

Spectra of FBS halo carbon stars.

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thumbnail Fig. A.3

Spectra of Carina carbon stars.

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thumbnail Fig. A.4

Spectra of Fornax carbon stars.

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thumbnail Fig. A.5

TAROT light curves of halo carbon stars.

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thumbnail Fig. A.6

Atlas of light curves with LINEAR (colored in cyan) and Catalina (in magenta), and fitted sinusoids.

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thumbnail Fig. A.7

Light curves of Fornax C stars and fitted sinusoids.

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© ESO, 2014

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