The NIR Ca ii triplet at low metallicity - Searching for extremely low-metallicity stars in classical dwarf galaxies

E. Starkenburg; V. Hill; E. Tolstoy; J. I. González Hernández; M. Irwin; A. Helmi; G. Battaglia; P. Jablonka; M. Tafelmeyer; M. Shetrone; K. Venn; T. de Boer

doi:10.1051/0004-6361/200913759

Press Release

Free Access

Issue		A&A Volume 513, April 2010


Article Number		A34
Number of page(s)		15
Section		Galactic structure, stellar clusters, and populations
DOI		https://doi.org/10.1051/0004-6361/200913759
Published online		21 April 2010

Alonso, A., Arribas, S., & Martínez-Roger, C. 1999, A&AS, 140, 261 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Alvarez, R., & Plez, B. 1998, A&A, 330, 1109 [NASA ADS] [Google Scholar]
Aoki, W., Arimoto, N., Sadakane, K., et al. 2009, A&A, 502, 569 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Armandroff, T. E., & Zinn, R. 1988, AJ, 96, 92 [NASA ADS] [CrossRef] [Google Scholar]
Armandroff, T. E., & Da Costa, G. S. 1991, AJ, 101, 1329 [NASA ADS] [CrossRef] [Google Scholar]
Barklem, P. S., Christlieb, N., Beers, T. C., et al. 2005, A&A, 439, 129 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Battaglia, G., Tolstoy, E., Helmi, A., et al. 2006, A&A, 459, 423 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Battaglia, G., Helmi, A., Tolstoy, E., et al. 2008a, ApJ, 681, L13 [NASA ADS] [CrossRef] [MathSciNet] [Google Scholar]
Battaglia, G., Irwin, M., Tolstoy, E., et al. 2008b, MNRAS, 383, 183 [NASA ADS] [CrossRef] [MathSciNet] [Google Scholar]
Butler, K., & Giddings, J. R. 1985, Newsletter of Analysis of Astronomical Spectra, 9 [Google Scholar]
Carrera, R., Gallart, C., Pancino, E., & Zinn, R. 2007, AJ, 134, 1298 [NASA ADS] [CrossRef] [Google Scholar]
Castelli, F., & Kurucz, R. L. 2003, in Modelling of Stellar Atmospheres, ed. N. Piskunov, W. W. Weiss, & D. F. Gray, IAU Symp., 210, 20P [Google Scholar]
Catelan, M., & Cortés, C. 2008, ApJ, 676, L135 [NASA ADS] [CrossRef] [Google Scholar]
Cayrel, R., Depagne, E., Spite, M., et al. 2004, A&A, 416, 1117 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Cenarro, A. J., Cardiel, N., Gorgas, J., et al. 2001, MNRAS, 326, 959 [NASA ADS] [CrossRef] [Google Scholar]
Cenarro, A. J., Gorgas, J., Cardiel, N., Vazdekis, A., & Peletier, R. F. 2002, MNRAS, 329, 863 [NASA ADS] [CrossRef] [Google Scholar]
Cohen, J. G. 1978, ApJ, 221, 788 [NASA ADS] [CrossRef] [Google Scholar]
Cohen, J. G., & Huang, W. 2009, ApJ, 701, 1053 [NASA ADS] [CrossRef] [Google Scholar]
Cole, A. A., Smecker-Hane, T. A., Tolstoy, E., Bosler, T. L., & Gallagher, J. S. 2004, MNRAS, 347, 367 [NASA ADS] [CrossRef] [Google Scholar]
Da Costa, G. S., Held, E. V., Saviane, I., & Gullieuszik, M. 2009, ApJ, 705, 1481 [NASA ADS] [CrossRef] [EDP Sciences] [MathSciNet] [PubMed] [Google Scholar]
Demarque, P., Woo, J., Kim, Y., & Yi, S. K. 2004, ApJS, 155, 667 [NASA ADS] [CrossRef] [Google Scholar]
Frebel, A., Kirby, E., & Simon, J. D. 2010, Nature, 464, 72 [NASA ADS] [CrossRef] [Google Scholar]
Frebel, A., Simon, J. D., Geha, M., & Willman, B. 2010, ApJ, 708, 560 [NASA ADS] [CrossRef] [Google Scholar]
Freeman, K., & Bland-Hawthorn, J. 2002, ARA&A, 40, 487 [NASA ADS] [CrossRef] [Google Scholar]
Fulbright, J. P. 2000, AJ, 120, 1841 [NASA ADS] [CrossRef] [Google Scholar]
Fulbright, J. P., Rich, R. M., & Castro, S. 2004, ApJ, 612, 447 [NASA ADS] [CrossRef] [Google Scholar]
Fulbright, J. P., McWilliam, A., & Rich, R. M. 2007, ApJ, 661, 1152 [NASA ADS] [CrossRef] [Google Scholar]
Gehren, T., Butler, K., Mashonkina, L., Reetz, J., & Shi, J. 2001, A&A, 366, 981 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Giddings, J. R. 1981, Ph.D. Thesis, AA, Moscow state University [Google Scholar]
Gustafsson, B., Edvardsson, B., Eriksson, K., et al. 2008, A&A, 486, 951 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Helmi, A., Irwin, M. J., Tolstoy, E., et al. 2006, ApJ, 651, L121 [NASA ADS] [CrossRef] [Google Scholar]
Hinkle, K., Wallace, L., Valenti, J., & Harmer, D. 2000, Visible and Near Infrared Atlas of the Arcturus Spectrum 3727-9300 A (ASP) [Google Scholar]
Honda, S., Aoki, W., Kajino, T., et al. 2004, ApJ, 607, 474 [NASA ADS] [CrossRef] [Google Scholar]
Irwin, M., & Hatzidimitriou, D. 1995, MNRAS, 277, 1354 [NASA ADS] [CrossRef] [Google Scholar]
Ivans, I. I., Kraft, R. P., Sneden, C., et al. 2001, AJ, 122, 1438 [NASA ADS] [CrossRef] [EDP Sciences] [MathSciNet] [PubMed] [Google Scholar]
Jones, J. E., Alloin, D. M., & Jones, B. J. T. 1984, ApJ, 283, 457 [NASA ADS] [CrossRef] [Google Scholar]
Jorgensen, U. G., Carlsson, M., & Johnson, H. R. 1992, A&A, 254, 258 [NASA ADS] [Google Scholar]
Kaluzny, J., Kubiak, M., Szymanski, M., et al. 1995, A&AS, 112, 407 [NASA ADS] [CrossRef] [EDP Sciences] [MathSciNet] [PubMed] [Google Scholar]
Kirby, E. N., Simon, J. D., Geha, M., Guhathakurta, P., & Frebel, A. 2008, ApJ, 685, L43 [NASA ADS] [CrossRef] [Google Scholar]
Kirby, E. N., Guhathakurta, P., Bolte, M., Sneden, C., & Geha, M. C. 2009, ApJ, 705, 328 [NASA ADS] [CrossRef] [Google Scholar]
Koch, A., Grebel, E. K., Wyse, R. F. G., et al. 2006, AJ, 131, 895 [NASA ADS] [CrossRef] [Google Scholar]
Koch, A., Wilkinson, M. I., Kleyna, J. T., et al. 2007a, ApJ, 657, 241 [NASA ADS] [CrossRef] [Google Scholar]
Koch, A., Grebel, E. K., Kleyna, J. T., et al. 2007b, AJ, 133, 270 [NASA ADS] [CrossRef] [Google Scholar]
Koch, A., Grebel, E. K., Gilmore, G. F., et al. 2008a, AJ, 135, 1580 [NASA ADS] [CrossRef] [Google Scholar]
Koch, A., McWilliam, A., Grebel, E. K., Zucker, D. B., & Belokurov, V. 2008b, ApJ, 688, L13 [NASA ADS] [CrossRef] [Google Scholar]
Koch, A., Wilkinson, M. I., Kleyna, J. T., et al. 2009, ApJ, 690, 453 [NASA ADS] [CrossRef] [Google Scholar]
Kraft, R. P., & Ivans, I. I. 2003, PASP, 115, 143 [NASA ADS] [CrossRef] [Google Scholar]
Krauss, L. M., & Chaboyer, B. 2003, Science, 299, 65 [NASA ADS] [CrossRef] [PubMed] [Google Scholar]
Kupka, F. G., Ryabchikova, T. A., Piskunov, N. E., Stempels, H. C., & Weiss, W. W. 2000, Baltic Astron., 9, 590 [NASA ADS] [Google Scholar]
Kurucz, R. 1993, ATLAS9 Stellar Atmosphere Programs and 2 km s^-1 grid. Kurucz CD-ROM, Cambridge, Mass., Smithsonian Astrophysical Observatory, 13 [Google Scholar]
Kurucz, R. L., Furenlid, I., Brault, J., & Testerman, L. 1984, Solar flux atlas from 296 to 1300 nm, National Solar Observatory Atlas, Sunspot, New Mexico [Google Scholar]
Leaman, R., Cole, A. A., Venn, K. A., et al. 2009, ApJ, 699, 1 [NASA ADS] [CrossRef] [Google Scholar]
Markwardt, C. B. 2009, in ASP Conf. Ser. 411, ed. D. A. Bohlender, D. Durand, & P. Dowler, 251 [Google Scholar]
Marrese, P. M., Boschi, F., & Munari, U. 2003, A&A, 406, 995 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Mashonkina, L., Gehren, T., Shi, J., Korn, A., & Grupp, F. 2010, in Chemical Abundances in the Universe: Connecting First Stars to Planets, Proceedings of the International Astronomical Union, IAU Symp., 265, 197 [Google Scholar]
Mashonkina, L., Korn, A. J., & Przybilla, N. 2007, A&A, 461, 261 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Mateo, M., Fischer, P., & Krzeminski, W. 1995, AJ, 110, 2166 [NASA ADS] [CrossRef] [Google Scholar]
Mateo, M., Hurley-Keller, D., & Nemec, J. 1998, AJ, 115, 1856 [NASA ADS] [CrossRef] [Google Scholar]
Muñoz, R. R., Majewski, S. R., Zaggia, S., et al. 2006, ApJ, 649, 201 [NASA ADS] [CrossRef] [Google Scholar]
Norris, J. E., Freeman, K. C., & Mighell, K. J. 1996, ApJ, 462, 241 [NASA ADS] [CrossRef] [Google Scholar]
Norris, J. E., Gilmore, G., Wyse, R. F. G., et al. 2008, ApJ, 689, L113 [NASA ADS] [CrossRef] [Google Scholar]
Norris, J. E., Yong, D., Gilmore, G., & Wyse, R. F. G. 2010, ApJ, 711, 350 [NASA ADS] [CrossRef] [Google Scholar]
Olszewski, E. W., Schommer, R. A., Suntzeff, N. B., & Harris, H. C. 1991, AJ, 101, 515 [NASA ADS] [CrossRef] [Google Scholar]
Pasquini, L., Avila, G., Blecha, A., et al. 2002, The Messenger, 110, 1 [NASA ADS] [Google Scholar]
Pietrinferni, A., Cassisi, S., Salaris, M., & Castelli, F. 2004, ApJ, 612, 168 [NASA ADS] [CrossRef] [Google Scholar]
Plez, B. 1998, A&A, 337, 495 [NASA ADS] [Google Scholar]
Plez, B. 2008, Phys. Scr. T, 133, 014003 [NASA ADS] [CrossRef] [Google Scholar]
Pont, F., Zinn, R., Gallart, C., Hardy, E., & Winnick, R. 2004, AJ, 127, 840 [NASA ADS] [CrossRef] [Google Scholar]
Pritzl, B. J., Venn, K. A., & Irwin, M. 2005, AJ, 130, 2140 [NASA ADS] [CrossRef] [Google Scholar]
Rich, R. M., Corsi, C. E., Cacciari, C., et al. 2005, AJ, 129, 2670 [NASA ADS] [CrossRef] [Google Scholar]
Rizzi, L., Held, E. V., Saviane, I., Tully, R. B., & Gullieuszik, M. 2007, MNRAS, 380, 1255 [NASA ADS] [CrossRef] [MathSciNet] [Google Scholar]
Rutledge, G. A., Hesser, J. E., & Stetson, P. B. 1997a, PASP, 109, 907 [NASA ADS] [CrossRef] [Google Scholar]
Rutledge, G. A., Hesser, J. E., Stetson, P. B., et al. 1997b, PASP, 109, 883 [NASA ADS] [CrossRef] [Google Scholar]
Sbordone, L., Bonifacio, P., Castelli, F., & Kurucz, R. L. 2004, Mem. Soc. Astron. Ital. Suppl., 5, 93 [NASA ADS] [CrossRef] [Google Scholar]
Schörck, T., Christlieb, N., Cohen, J. G., et al. 2009, A&A, 507, 817 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Shetrone, M. D., Côté, P., & Sargent, W. L. W. 2001, ApJ, 548, 592 [NASA ADS] [CrossRef] [Google Scholar]
Shetrone, M., Venn, K. A., Tolstoy, E., et al. 2003, AJ, 125, 684 [NASA ADS] [CrossRef] [Google Scholar]
Shetrone, M. D., Siegel, M. H., Cook, D. O., & Bosler, T. 2009, AJ, 137, 62 [NASA ADS] [CrossRef] [Google Scholar]
Simon, J. D., & Geha, M. 2007, ApJ, 670, 313 [NASA ADS] [CrossRef] [Google Scholar]
Spinrad, H., & Taylor, B. J. 1969, ApJ, 157, 1279 [NASA ADS] [CrossRef] [Google Scholar]
Spinrad, H., & Taylor, B. J. 1971, ApJS, 22, 445 [NASA ADS] [CrossRef] [Google Scholar]
Spite, M., Cayrel, R., Plez, B., et al. 2005, A&A, 430, 655 [NASA ADS] [CrossRef] [EDP Sciences] [Google Scholar]
Suntzeff, N. B., Mateo, M., Terndrup, D. M., et al. 1993, ApJ, 418, 208 [NASA ADS] [CrossRef] [Google Scholar]
Thévenin, F., & Idiart, T. P. 1999, ApJ, 521, 753 [NASA ADS] [CrossRef] [Google Scholar]
Tolstoy, E., Venn, K. A., Shetrone, M., et al. 2003, AJ, 125, 707 [NASA ADS] [CrossRef] [Google Scholar]
Tolstoy, E., Irwin, M. J., Helmi, A., et al. 2004, ApJ, 617, L119 [NASA ADS] [CrossRef] [Google Scholar]
Tolstoy, E., Hill, V., Irwin, M., et al. 2006, The Messenger, 123, 33 [NASA ADS] [Google Scholar]
Tolstoy, E., Hill, V., & Tosi, M. 2009, ARA&A, 47, 371 [NASA ADS] [CrossRef] [Google Scholar]
Venn, K. A., Irwin, M., Shetrone, M. D., et al. 2004, AJ, 128, 1177 [NASA ADS] [CrossRef] [Google Scholar]
Walker, M. G., Mateo, M., Olszewski, E. W., Sen, B., & Woodroofe, M. 2009a, AJ, 137, 3109 [NASA ADS] [CrossRef] [Google Scholar]
Walker, M. G., Belokurov, V., Evans, N. W., et al. 2009b, ApJ, 694, L144 [NASA ADS] [CrossRef] [Google Scholar]
Yi, S., Demarque, P., Kim, Y., et al. 2001, ApJS, 136, 417 [NASA ADS] [CrossRef] [Google Scholar]

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