The evolution of lithium in FGK dwarf stars. Influence of planets and Galactic migration

Autor: de Andrés, F. Llorente, de la Reza, R., Cruz, P., Cuenda-Muñoz, D., Alfaro, E. J., Chavero, C., Cifuentes, C.

This work aims to investigate the behaviour of the lithium abundance in stars with and without detected planets. Our study is based on a sample of 1332 FGK main-sequence stars with measured lithium abundances, for 257 of which planets were detected.

Externí odkaz: http://arxiv.org/abs/2402.01315

The evolution of lithium in FGK dwarf stars: The Li rotation connection and the Li desert

Autor: de Andrés, F. Llorente, Chavero, C., de la Reza, R., Roca-Fàbrega, S., Cifuentes, C.

Publikováno v: A&A 654, A137 (2021)

We investigate two topics regarding solar mass FGK-type stars, the lithium rotation connection (LRC) and the existence of the "lithium desert". We determine the minimum critical rotation velocity ($v \sin i$) related with the LRC separating slow from

Externí odkaz: http://arxiv.org/abs/2108.05852

The Southern Photometric Local Universe Survey (S-PLUS): improved SEDs, morphologies and redshifts with 12 optical filters

Autor: de Oliveira, C. Mendes, Ribeiro, T., Schoenell, W., Kanaan, A., Overzier, R. A., Molino, A., Sampedro, L., Coelho, P., Barbosa, C. E., Cortesi, A., Costa-Duarte, M. V., Herpich, F. R., Hernandez-Jimenez, J. A., Placco, V. M., Xavier, H. S., Abramo, L. R., Saito, R. K., Chies-Santos, A. L., Ederoclite, A., de Oliveira, R. Lopes, Gonçalves, D. R., Akras, S., Almeida, L. A., Almeida-Fernandes, F., Beers, T. C., Bonatto, C., Bonoli, S., Cypriano, E. S., de Lima, Erik V. R., de Souza, R. S., de Souza, G. Fabiano, Ferrari, F., Gonçalves, T. S., Gonzalez, A. H., Gutiérrez-Soto, L. A., Hartmann, E. A., Jaffe, Y., Kerber, L. O., Lima-Dias, C., Lopes, P. A. A., Menendez-Delmestre, K., Nakazono, L. M. I., Novais, P. M., Ortega-Minakata, R. A., Pereira, E. S., Perottoni, H. D., Queiroz, C., Reis, R. R. R., Santos, W. A., Santos-Silva, T., Santucci, R. M., Barbosa, C. L., Siffert, B. B., Sodré Jr., L., Torres-Flores, S., Westera, P., Whitten, D. D., Alcaniz, J. S., Alonso-García, Javier, Alencar, S., Alvarez-Candal, A., Amram, P., Azanha, L., Barbá, R. H., Bernardinelli, P. H., Fernandes, M. Borges, Branco, V., Brito-Silva, D., Buzzo, M. L., Caffer, J., Campillay, A., Cano, Z., Carvano, J. M., Castejon, M., Fernandes, R. Cid, Dantas, M. L. L., Daflon, S., Damke, G., de la Reza, R., de Azevedo, L. J. de Melo, De Paula, D. F., Diem, K. G., Donnerstein, R., Dors, O. L., Dupke, R., Eikenberry, S., Escudero, Carlos G., Faifer, Favio R., Farías, H., Fernandes, B., Fernandes, C., Fontes, S., Galarza, A., Hirata, N. S. T., Katena, L., Gregorio-Hetem, J., Hernández-Fernández, J. D., Izzo, L., Arancibia, M. Jaque, Jatenco-Pereira, V., Jiménez-Teja, Y., Kann, D. A., Krabbe, A. C., Labayru, C., Lazzaro, D., Neto, G. B. Lima, Lopes, Amanda R., Magalhães, R., Makler, M., de Menezes, R., Miralda-Escudé, J., Monteiro-Oliveira, R., Montero-Dorta, A. D., Muñoz-Elgueta, N., Nemmen, R. S., Castellón, J. L. Nilo, Oliveira, A. S., Ortíz, D., Pattaro, E., Pereira, C. B., Quint, B., Riguccini, L., Pinto, H. J. Rocha, Rodrigues, I., Roig, F., Rossi, S., Saha, Kanak, Santos, R., Müller, A. Schnorr, Sesto, Leandro A., Silva, R., Castelli, Analía V. Smith, Teixeira, Ramachrisna, Telles, E., de Souza, R. C. Thom, Thöne, C., Trevisan, M., Postigo, A. de Ugarte, Urrutia-Viscarra, F., Veiga, C. H., Vika, M., Vitorelli, A. Z., Werle, A., Werner, S. V., Zaritsky, D.

The Southern Photometric Local Universe Survey (S-PLUS) is imaging ~9300 deg^2 of the celestial sphere in twelve optical bands using a dedicated 0.8 m robotic telescope, the T80-South, at the Cerro Tololo Inter-American Observatory, Chile. The telesc

Externí odkaz: http://arxiv.org/abs/1907.01567

Planetary transit candidates in the CoRoT LRa01 field

Autor: Carone, L., Gandolfi, D., Cabrera, J., Hatzes, A. P., Deeg, H. J., Csizmadia, Sz., Paetzold, M., Weingrill, J., Aigrain, S., Alonso, R., Alapini, A., Almenara, J. -M., Auvergne, M., Baglin, A., Barge, P., Bonomo, A. S., Bordé, P., Bouchy, F., Bruntt, H., Carpano, S., Cochran, W. D., Deleuil, M., Díaz, R. F., Dreizler, S., Dvorak, R., Eisloeffel, J., Eigmueller, P., Endl, M., Erikson, A., Ferraz-Mello, S., Fridlund, M., Gazzano, J. -C., Gibson, N., Gillon, M., Gondoin, P., Grziwa, S., Guenther, E. W., Guillot, T., Hartmann, M., Havel, M., Hébrard, G., Jorda, L., Kabath, P., Léger, A., Llebaria, A., Lammer, H., Lovis, C., MacQueen, P. J., Mayor, M., Mazeh, T., Moutou, C., Nortmann, L., Ofir, A., Ollivier, M., Parviainen, H., Pepe, F., Pont, F., Queloz, D., Rabus, M., Rauer, H., Régulo, C., Renner, S., de la Reza, R., Rouan, D., Santerne, A., Samuel, B., Schneider, J., Shporer, A., Stecklum, B., Tal-Or, L., Tingley, B., Udry, S., Wuchterl, G.

Context: CoRoT is a pioneering space mission whose primary goals are stellar seismology and extrasolar planets search. Its surveys of large stellar fields generate numerous planetary candidates whose lightcurves have transit-like features. An extensi

Externí odkaz: http://arxiv.org/abs/1110.2384

Lithium Abundances in a Sample of Planet Hosting Dwarfs

Autor: Ghezzi, L., Cunha, K., Smith, V. V., de la Reza, R.

Publikováno v: Astrophysical Journal 724 (2010) 154-164

This work presents a homogeneous determination of lithium abundances in a large sample of giant-planet hosting stars (N=117), and a control sample of disk stars without detected planets (N=145). The lithium abundances were derived using a detailed pr

Externí odkaz: http://arxiv.org/abs/1009.2130