Zobrazeno 1 - 10
of 318
pro vyhledávání: '"Prieto, C. Allende"'
Autor:
Stefanov, A. K., Hernández, J. I. González, Mascareño, A. Suárez, Nari, N., Rebolo, R., Damasso, M., Castro-González, A., Osorio, M. -R. Zapatero, Prieto, C. Allende, Silva, A. M., Martins, C. J. A. P.
A sub-Earth-mass planet orbiting Barnard's star, designated as Barnard b, has been recently announced. At a similar time, the first photometric data of Barnard's star by the Transit Exoplanet Survey Satellite (TESS) was released in Sector 80. We expl
Externí odkaz:
http://arxiv.org/abs/2410.00577
Autor:
Hernandez, J. I. Gonzalez, Mascareno, A. Suarez, Silva, A. M., Stefanov, A. K., Faria, J. P., Tabernero, H. M., Sozzetti, A., Rebolo, R., Pepe, F., Santos, N. C., Cristiani, S., Lovis, C., Dumusque, X., Figueira, P., Lillo-Box, J., Nari, N., Benatti, S., Hobson, M. J., Castro-Gonz'alez, A., Allart, R., Passegger, V. M., Osorio, M. -R. Zapatero, Adibekyan, V., Alibert, Y., Prieto, C. Allende, Bouchy, F., Damasso, M., D'Odorico, V., Di Marcantonio, P., Ehrenreich, D., Curto, G. Lo, Santos, R. G'enova, Martins, C. J. A. P., Mehner, A., Micela, G., Molaro, P., Nunes, N., Palle, E., Sousa, S. G., Udry, S.
Publikováno v:
A&A, 690, A79 (2024)
Barnard's star is a primary target within the ESPRESSO guaranteed time observations (GTO) as it is the second closest neighbour to our Sun after the $\alpha$ Centauri stellar system. We present here a large set of 156 ESPRESSO observations of Barnard
Externí odkaz:
http://arxiv.org/abs/2410.00569
Autor:
Silva, A. R. Costa, Demangeon, O. D. S., Santos, N. C., Ehrenreich, D., Lovis, C., Chakraborty, H., Lendl, M., Pepe, F., Cristiani, S., Rebolo, R., Zapatero-Osorio, M. R., Adibekyan, V., Alibert, Y., Allart, R., Prieto, C. Allende, Silva, T. Azevedo, Borsa, F., Bourrier, V., Cristo, E., Di Marcantonio, P., Esparza-Borges, E., Figueira, P., Hernández, J. I. González, Herrero-Cisneros, E., Curto, G. Lo, Martins, C. J. A. P., Mehner, A., Nunes, N. J., Palle, E., Pelletier, S., Seidel, J. V., Silva, A. M., Sousa, S. G., Sozzetti, A., Steiner, M., Mascareño, A. Suárez, Udry, S.
Publikováno v:
Astronomy & Astrophysics, 689, A8, 15 (2024)
Ultra hot Jupiters (gas giants, Teq>2000 K) are intriguing exoplanets due to their extreme atmospheres. Their torrid daysides can be characterised using ground-based high-resolution emission spectroscopy. We search for signatures of neutral and singl
Externí odkaz:
http://arxiv.org/abs/2409.13519
Autor:
Marconi, A., Abreu, M., Adibekyan, V., Alberti, V., Albrecht, S., Alcaniz, J., Aliverti, M., Prieto, C. Allende, Gómez, J. D. Alvarado, Alves, C. S., Amado, P. J., Amate, M., Andersen, M. I., Antoniucci, S., Artigau, E., Bailet, C., Baker, C., Baldini, V., Balestra, A., Barnes, S. A., Baron, F., Barros, S. C. C., Bauer, S. M., Beaulieu, M., Bellido-Tirado, O., Benneke, B., Bensby, T., Bergin, E. A., Berio, P., Biazzo, K., Bigot, L., Bik, A., Birkby, J. L., Blind, N., Boebion, O., Boisse, I., Bolmont, E., Bolton, J. S., Bonaglia, M., Bonfils, X., Bonhomme, L., Borsa, F., Bouret, J. -C., Brandeker, A., Brandner, W., Broeg, C. H., Brogi, M., Brousseau, D., Brucalassi, A., Brynnel, J., Buchhave, L. A., Buscher, D. F., Cabona, L., Cabral, A., Calderone, G., Calvo-Ortega, R., Cantalloube, F., Martins, B. L. Canto, Carbonaro, L., Caujolle, Y., Chauvin, G., Chazelas, B., Cheffot, A. -L., Cheng, Y. S., Chiavassa, A., Christensen, L., Cirami, R., Cirasuolo, M., Cook, N. J., Cooke, R. J., Coretti, I., Covino, S., Cowan, N., Cresci, G., Cristiani, S., Parro, V. Cunha, Cupani, G., D'Odorico, V., Dadi, K., Leão, I. de Castro, De Cia, A., De Medeiros, J. R., Debras, F., Debus, M., Delorme, A., Demangeon, O., Derie, F., Dessauges-Zavadsky, M., Di Marcantonio, P., Di Stefano, S., Dionies, F., de Souza, A. Domiciano, Doyon, R., Dunn, J., Egner, S., Ehrenreich, D., Faria, J. P., Ferruzzi, D., Feruglio, C., Fisher, M., Fontana, A., Frank, B. S., Fuesslein, C., Fumagalli, M., Fusco, T., Fynbo, J., Gabella, O., Gaessler, W., Gallo, E., Gao, X., Genolet, L., Genoni, M., Giacobbe, P., Giro, E., Goncalves, R. S., Gonzalez, O. A., Hernández, J. I. González, Gouvret, C., Temich, F. Gracia, Haehnelt, M. G., Haniff, C., Hatzes, A., Helled, R., Hoeijmakers, H. J., Hughes, I., Huke, P., Ivanisenko, Y., Järvinen, A. S., Järvinen, S. P., Kaminski, A., Kern, J., Knoche, J., Kordt, A., Korhonen, H., Korn, A. J., Kouach, D., Kowzan, G., Kreidberg, L., Landoni, M., Lanotte, A. A., Lavail, A., Lavie, B., Lee, D., Lehmitz, M., Li, J., Li, W., Liske, J., Lovis, C., Lucatello, S., Lunney, D., MacIntosh, M. J., Madhusudhan, N., Magrini, L., Maiolino, R., Maldonado, J., Malo, L., Man, A. W. S., Marquart, T., Marques, C. M. J., Marques, E. L., Martinez, P., Martins, A., Martins, C. J. A. P., Martins, J. H. C., Maslowski, P., Mason, C. A., Mason, E., McCracken, R. A., Sousa, M. A. F. Melo e, Mergo, P., Micela, G., Milaković, D., Molliere, P., Monteiro, M. A., Montgomery, D., Mordasini, C., Morin, J., Mucciarelli, A., Murphy, M. T., N'Diaye, M., Nardetto, N., Neichel, B., Neri, N., Niedzielski, A. T., Niemczura, E., Nisini, B., Nortmann, L., Noterdaeme, P., Nunes, N. J., Oggioni, L., Olchewsky, F., Oliva, E., Onel, H., Origlia, L., Ostlin, G., Ouellette, N. N. -Q., Palle, E., Papaderos, P., Pariani, G., Pasquini, L., Castro, J. Peñate, Pepe, F., Peroux, C., Levasseur, L. Perreault, Perruchot, S., Petit, P., Pfuhl, O., Pino, L., Piqueras, J., Piskunov, N., Pollo, A., Poppenhaeger, K., Porru, M., Puschnig, J., Quirrenbach, A., Rauscher, E., Rebolo, R., Redaelli, E. M. A., Reffert, S., Reid, D. T., Reiners, A., Richter, P., Riva, M., Rivoire, S., Rodriguez-López, C., Roederer, I. U., Romano, D., Roth, M., Rousseau, S., Rowe, J., Saccardi, A., Salvadori, S., Sanna, N., Santos, N. C., Diaz, P. Santos, Sanz-Forcada, J., Sarajlic, M., Sauvage, J. -F., Savio, D., Scaudo, A, Schäfer, S., Schiavon, R. P., Schmidt, T. M., Selmi, C., Simoes, R., Simonnin, A., Sivanandam, S., Sordet, M., Sordo, R., Sortino, F., Sosnowska, D., Sousa, S. G., Spang, A., Spiga, R., Stempels, E., Stevenson, J. R. Y., Strassmeier, K. G., Mascareño, A. Suárez, Sulich, A., Sun, X., Tanvir, N. R., Tenegi-Sangines, F., Thibault, S., Thompson, S. J., Tisserand, P., Tozzi, A., Turbet, M., Veran, J. -P., Vallee, P., Vanni, I., Varas, R., Vega-Moreno, A., Venn, K. A., Verma, A., Vernet, J., Viel, M., Wade, G., Waring, C., Weber, M., Weder, J., Wehbe, B., Weingrill, J., Woche, M., Xompero, M., Zackrisson, E., Zanutta, A., Osorio, M. R. Zapatero, Zechmeister, M., Zimara, J.
The first generation of ELT instruments includes an optical-infrared high-resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). ANDES consists of three fibre-fed spectrographs
Externí odkaz:
http://arxiv.org/abs/2407.14601
Autor:
Wanderley, Fabio, Cunha, Katia, Kochukhov, Oleg, Smith, Verne V., Souto, Diogo, Cao, Lyra, Covey, Kevin, Majewski, Steven R., Martinez, Cintia, Muirhead, Philip S., Pinsonneault, Marc, Prieto, C. Allende, Stassun, Keivan G.
Average magnetic field measurements are presented for 62 M-dwarf members of the Pleiades open cluster, derived from Zeeman-enhanced Fe I lines in the H-band. An MCMC methodology was employed to model magnetic filling factors using SDSS-IV APOGEE high
Externí odkaz:
http://arxiv.org/abs/2406.13757
Autor:
Hobson, M. J., Bouchy, F., Lavie, B., Lovis, C., Adibekyan, V., Prieto, C. Allende, Alibert, Y., Barros, S. C. C., Castro-González, A., Cristiani, S., D'Odorico, V., Damasso, M., Di Marcantonio, P., Dumusque, X., Ehrenreich, D., Figueira, P., Santos, R. Génova, Hernández, J. I. González, Lillo-Box, J., Curto, G. Lo, Martins, C. J. A. P., Mehner, A., Micela, G., Molaro, P., Nunes, N. J., Palle, E., Pepe, F., Rebolo, R., Rodrigues, J., Santos, N., Sousa, S. G., Sozzetti, A., Mascareño, A. Suárez, Tabernero, H. M., Udry, S., Osorio, M. -R. Zapatero, Armstrong, D. J., Ciardi, D. R., Collins, K. A., Collins, K. I., Everett, M., Gandolfi, D., Howell, S. B., Jenkins, J. M., Kielkopf, J., Livingston, J. H., Lund, M. B., Mireles, I., Ricker, G. R., Schwarz, R. P., Seager, S., Tan, T. -G., Ting, E. B., Winn, J. N.
Publikováno v:
A&A 688, A216 (2024)
Since 2018, the ESPRESSO spectrograph at the VLT has been hunting for planets in the Southern skies via the RV method. One of its goals is to follow up candidate planets from transit surveys such as the TESS mission, particularly small planets. We an
Externí odkaz:
http://arxiv.org/abs/2406.06278
Autor:
Sales-Silva, J. V., Cunha, K., Smith, V. V., Daflon, S., Souto, D., Guerço, R., Queiroz, A., Chiappini, C., Hayes, C. R., Masseron, T., Hasselquist, Sten, Horta, D., Prantzos, N., Zoccali, M., Prieto, C. Allende, Barbuy, B., Beaton, R., Bizyaev, D., Fernández-Trincado, J. G., Frinchaboy, P. M., Holtzman, J. A., Johnson, J. A., Jönsson, Henrik, Majewski, S. R., Minniti, D., Nidever, D. L., Schiavon, R. P., Schultheis, M., Sobeck, J., Stringfellow, G. S., Zasowski, G.
This study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of $\sim$2000 stars in the Galactic Bulge/bar spatially contained within $|X_{Gal}|<$5 kpc, $|Y_{Gal}|<
Externí odkaz:
http://arxiv.org/abs/2402.14898
Autor:
Mascareño, A. Suárez, Passegger, V. M., Hernández, J. I. González, Armstrong, D. J., Nielsen, L. D., Lovis, C., Lavie, B., Sousa, S. G., Silva, A. M., Allart, R., Rebolo, R., Pepe, F., Santos, N. C., Cristiani, S., Sozzetti, A., Osorio, M. R. Zapatero, Tabernero, H. M., Dumusque, X., Udry, S., Adibekyan, V., Prieto, C. Allende, Alibert, Y., Barros, S. C. C., Bouchy, F., Castro-González, A., Collins, K. A., Damasso, M., D'Odorico, V., Demangeon, O. D. S., Di Marcantonio, P., Ehrenreich, D., Hadjigeorghiou, A., Hara, N., Hawthorn, F., Jenkins, J. M., Lillo-Box, J., Curto, G. Lo, Martins, C. J. A. P., Mehner, A., Micela, G., Molaro, P., Nunes, N., Nari, N., Osborn, A., Pallé, E., Ricker, G. R., Rodrigues, J., Rowden, P., Seager, S., Stefanov, A. K., Strøm, P. A., Villaseñor, J. N. S., Watkins, C. N., Winn, J., Wohler, B., Zambelli, R.
The number of super-Earth and mini-Neptune planet discoveries has increased significantly in the last two decades thanks to transit and radial velocity surveys. When it is possible to apply both techniques, we can characterise the internal compositio
Externí odkaz:
http://arxiv.org/abs/2402.04113
Autor:
Passegger, V. M., Mascareño, A. Suárez, Allart, R., Hernández, J. I. González, Lovis, C., Lavie, B., Silva, A. M., Müller, H. M., Tabernero, H. M., Cristiani, S., Pepe, F., Rebolo, R., Santos, N. C., Adibekyan, V., Alibert, Y., Prieto, C. Allende, Barros, S. C. C., Bouchy, F., Castro-González, A., D'Odorico, V., Dumusque, X., Di Marcantonio, P., Ehrenreich, D., Figueira, P., Santos, R. Génova, Curto, G. Lo, Martins, C. J. A. P., Mehner, A., Micela, G., Molaro, P., Nari, N., Nunes, N. J., Pallé, E., Poretti, E., Rodrigues, J., Sousa, S. G., Sozzetti, A., Udry, S., Osorio, M. R. Zapatero
GJ 9827 is a bright, nearby K7V star orbited by two super-Earths and one mini-Neptune on close-in orbits. The system was first discovered using K2 data and then further characterized by other spectroscopic and photometric instruments. Previous litera
Externí odkaz:
http://arxiv.org/abs/2401.06276
Autor:
Molaro, P., Aguado, D. S., Caffau, E., Prieto, C. Allende, Bonifacio, P., Hernandez, J. I. Gonzalez, Rebolo, R., Osorio, M. R. Zapatero, Cristiani, S., Pepe, F., Santos, N. C., Alibert, Y., Cupani, G., Di Marcantonio, P., D'Odorico, V., Lovis, C., Martins, C. J. A. P., Milakovic, D., Murphy, M., Nunes, N. J., Schmidt, T. M., Sousa, S., Sozzetti, a., Mascareno, A. Suarez
Publikováno v:
A&A 679, A72 (2023)
The known Mega and Hyper Metal-Poor (MMP-HMP) stars with [Fe/H]<-6.0 and <-5.0, respectively, likely belong to the CEMP-no class, i.e. carbon-enhanced stars with low or absent second peak neutron capture elements. They are likely second generation st
Externí odkaz:
http://arxiv.org/abs/2309.11664