Publication: Testing the chemical tagging technique with open clusters
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2015-05
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Context. Stars are born together from giant molecular clouds and, if we assume that the priors were chemically homogeneous and well-mixed, we expect them to share the same chemical composition. Most of the stellar aggregates are disrupted while orbiting the Galaxy and most of the dynamic information is lost, thus the only possibility of reconstructing the stellar formation history is to analyze the chemical abundances that we observe today. Aims. The chemical tagging technique aims to recover disrupted stellar clusters based merely on their chemical composition. We evaluate the viability of this technique to recover co-natal stars that are no longer gravitationally bound. Methods. Open clusters are co-natal aggregates that have managed to survive together. We compiled stellar spectra from 31 old and intermediate-age open clusters, homogeneously derived atmospheric parameters, and 17 abundance species, and applied machine learning algorithms to group the stars based on their chemical composition. This approach allows us to evaluate the viability and efficiency of the chemical tagging technique. Results. We found that stars at different evolutionary stages have distinct chemical patterns that may be due to NLTE effects, atomic diffusion, mixing, and biases. When separating stars into dwarfs and giants, we observed that a few open clusters show distinct chemical signatures while the majority show a high degree of overlap. This limits the recovery of co-natal aggregates by applying the chemical tagging technique. Nevertheless, there is room for improvement if more elements are included and models are improved.
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© ESO 2015. This work was partially supported by the Gaia Research for European Astronomy Training (GREAT-ITN) Marie Curie network, funded through the European Union Seventh Framework Programme [FP7/2007-2013] under grant agreement n. 264895. U.H. and A.J.K. acknowledge support from the Swedish National Space Board (Rymdstyrelsen). I.S.R. gratefully acknowledges the support provided by the Gemini-CONICYT project 32110029. All the software used in the data analysis were provided by the Open Source community.
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Astrofísica, Astronomía (Física)
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Anderson, E., & Francis, C. 2012, Astron. Lett., 38, 331
Anguiano, B., Freeman, K., Bland-Hawthorn, J., et al. 2014, in IAU Symp. 298, eds. S. Feltzing, G. Zhao, N. A. Walton, & P. Whitelock, 322
Arthur, D., & Vassilvitskii, S. 2007, in Proc. eighteenth annual ACM-SIAM symp. on Discrete algorithms, SIAM, 1027
Aurière, M. 2003, in EAS Pub. Ser. 9, eds. J. Arnaud, & N. Meunier, 105
Barden, S. C., Jones, D. J., Barnes, S. I., et al. 2010, in SPIE Conf. Ser., 7735
Bergemann, M., Lind, K., Collet, R., Magic, Z., & Asplund, M. 2012, MNRAS, 427, 27
Blanco Cuaresma, S., Soubiran, C., Heiter, U., & Jofré, P. 2014a, A&A, 569, A111
Blanco Cuaresma, S., Soubiran, C., Jofré, P., & Heiter, U. 2014b, A&A, 566, A98
Bland-Hawthorn, J., & Freeman, K. C. 2004, PASA, 21, 110
Bland-Hawthorn, J., Krumholz, M. R., & Freeman, K. 2010, ApJ, 713, 166
Bragaglia, A., & Tosi, M. 2006, AJ, 131, 1544
Busso, M., Gallino, R., Lambert, D. L., Travaglio, C., & Smith, V. V. 2001, ApJ, 557, 802
Carraro, G., Geisler, D., Villanova, S., Frinchaboy, P. M., & Majewski, S. R. 2007, A&A, 476, 217
De Silva, G. M., Sneden, C., Paulson, D. B., et al. 2006, AJ, 131, 455
De Silva, G. M., Freeman, K. C., Asplund, M., et al. 2007, AJ, 133, 1161
De Silva, G. M., Freeman, K. C., & Bland-Hawthorn, J. 2009, PASA, 26, 11
De Silva, G. M., Freeman, K. C., Bland-Hawthorn, J., et al. 2015, MNRAS, 449, 2604
Dekker, H., D’Odorico, S., Kaufer, A., Delabre, B., & Kotzlowski, H. 2000, in SPIE Conf. Ser. 4008, eds. M. Iye, & A. F. Moorwood, 534
Demarque, P., Woo, J.-H., Kim, Y.-C., & Yi, S. K. 2004, ApJS, 155, 667
Dias, W. S., Alessi, B. S., Moitinho, A., & Lépine, J. R. D. 2002, A&A, 389, 871
Donati, J., Semel, M., Carter, B. D., Rees, D. E., & Collier Cameron, A. 1997, MNRAS, 291, 658
Ester, M., Kriegel, H.-P., Sander, J., & Xu, X. 1996, KDD, 96, 226
Feng, Y., & Krumholz, M. R. 2014, Nature, 513, 523
Filzmoser, P. 2004, Proc. 7th Int. Conf. Computer Data Analysis and Modeling, eds. S. Aivazian et al., Vol. 1, 18
Finlay, J., Noriega Crespo, A., Friel, E. D., & Cudworth, K. M. 1995, in BAAS 27, Am. Astron. Soc. Meet. Abstr., 107.02
Freeman, K., & Bland-Hawthorn, J. 2002, ARA&A, 40, 487
Frey, B. J., & Dueck, D. 2007, Science, 315, 972
Friel, E. D. 1995, ARA&A, 33, 381
Gilmore, G., Randich, S., Asplund, M., et al. 2012, The Messenger, 147, 25
Gray, R. O., & Corbally, C. J. 1994, AJ, 107, 742
Grevesse, N., Asplund, M., & Sauval, A. J. 2007, Space Sci. Rev., 130, 105
Gruyters, P., Korn, A. J., Richard, O., et al. 2013, A&A, 555, A31
Gustafsson, B., Edvardsson, B., Eriksson, K., et al. 2008, A&A, 486, 951
Heiter, U., & Eriksson, K. 2006, A&A, 452, 1039
Heiter, U., Soubiran, C., Netopil, M., & Paunzen, E. 2014, A&A, 561, A93
Hirschberg, J. B., & Rosenberg, A. 2007, Proc. EMNLP
Jacobson, H. R., Pilachowski, C. A., & Friel, E. D. 2011, AJ, 142, 59
Jappsen, A.-K., Klessen, R. S., Larson, R. B., Li, Y., & Mac Low, M.-M. 2005, A&A, 435, 611
Kharchenko, N. V., Piskunov, A. E., Röser, S., Schilbach, E., & Scholz, R.-D. 2005, A&A, 438, 1163
Korn, A. J., Grundahl, F., Richard, O., et al. 2007, ApJ, 671, 402
Kratz, K.-L., Farouqi, K., Pfeiffer, B., et al. 2007, ApJ, 662, 39
Lada, C. J., & Lada, E. A. 2003, ARA&A, 41, 57
Larson, R. B. 1995, MNRAS, 272, 213
Lind, K., Korn, A. J., Barklem, P. S., & Grundahl, F. 2008, A&A, 490, 777
Lind, K., Bergemann, M., & Asplund, M. 2012, MNRAS, 427, 50
Lloyd, S. 1982, Information Theory, IEEE Transactions, 28, 129
Magrini, L., Randich, S., Romano, D., et al. 2014, A&A, 563, A44
Mahalanobis, P. C. 1936, Proc. National Institute of Sciences, Calcutta, 2, 49
Mashonkina, L. I., Shimanskii, V. V., & Sakhibullin, N. A. 2000, Astron. Rep., 44, 790
Mathieu, R. D. 2000, in Stellar Clusters and Associations: Convection, Rotation, and Dynamos, eds. R. Pallavicini, G. Micela, & S. Sciortino, ASP Conf. Ser., 198, 517
Mayor, M., Pepe, F., Queloz, D., et al. 2003, The Messenger, 114, 20
Meléndez, J., Bergemann, M., Cohen, J. G., et al. 2012, A&A, 543, A29
Mermilliod, J.-C., Mayor, M., & Udry, S. 2009, A&A, 498, 949
Meyer, M. R., Adams, F. C., Hillenbrand, L. A., Carpenter, J. M., & Larson, R. B. 2000, Protostars and Planets IV, 121
Mitschang, A. W., De Silva, G., Sharma, S., & Zucker, D. B. 2013, MNRAS, 428, 2321
Mitschang, A. W., De Silva, G., Zucker, D. B., et al. 2014, MNRAS, 438, 2753
Molenda-Zakowicz, J., Brogaard, K., Niemczura, E., et al. 2014, MNRAS, 445, 2446
Montalto, M., Villanova, S., Koppenhoefer, J., et al. 2011, A&A, 535, A39
Netopil, M., & Paunzen, E. 2013, A&A, 557, A10
Nordlander, T., Korn, A. J., Richard, O., & Lind, K. 2012, ApJ, 753, 48
Önehag, A., Gustafsson, B., & Korn, A. 2014, A&A, 562, A102
Pace, G., Danziger, J., Carraro, G., et al. 2010, A&A, 515, A28
Paunzen, E., & Netopil, M. 2006, MNRAS, 371, 1641
Paunzen, E., Heiter, U., Netopil, M., & Soubiran, C. 2010, A&A, 517, A32
Pereira, T. M. D., Asplund, M., Collet, R., et al. 2013, A&A, 554, A118
Pöhnl, H., & Paunzen, E. 2010, A&A, 514, A81
Randich, S., Sestito, P., Primas, F., Pallavicini, R., & Pasquini, L. 2006, A&A, 450, 557
Rousseeuw, P. J. 1984, J. Am. Statistical Association, 79, 871
Rousseeuw, P. J. 1987, J. Comput. Appl. Math., 20, 53
Rousseeuw, P. J., & Driessen, K. V. 1999, Technometrics, 41, 212
Shu, F. H., Adams, F. C., & Lizano, S. 1987, ARA&A, 25, 23
Tilley, D. A., & Pudritz, R. E. 2004, MNRAS, 353, 769
Ting, Y.-S., Freeman, K. C., Kobayashi, C., De Silva, G. M., & Bland-Hawthorn, J. 2012, MNRAS, 421, 1231
van den Bergh, S., & McClure, R. D. 1980, A&A, 88, 360