Zobrazeno 1 - 10
of 63
pro vyhledávání: '"I. C. Leão"'
Autor:
D. O. Fontinele, P. D. S. de Lima, Y. S. Messias, R. L. Gomes, C. E. Ferreira Lopes, B. L. Canto Martins, I. C. Leão, J. M. De Araújo, E. Janot Pacheco, J. R. De Medeiros
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 106 (2024)
This study presents the results of a search for rotation signatures in 250 Gaia Data Release 3 ultra-cool dwarfs (UCDs) with TESS light curves (LCs). We identified 71 targets with unambiguous periodicities, of which 61 present rotation signatures and
Externí odkaz:
https://doaj.org/article/f4a00210a01b4ce0aa200f4cc3eb2b20
Autor:
R. L. Gomes, B. L. Canto Martins, D. O. Fontinele, L. A. Almeida, R. Alves Freire, A. C. Brito, R. G. S. B. de Amorim, C. E. Ferreira Lopes, D. Hazarika, E. Janot-Pacheco, I. C. Leão, Y. S. Messias, R. A. A. Souza, J. R. De Medeiros
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 55 (2024)
We report the discovery of three Transiting Exoplanet Survey Satellite Objects of Interest (TOI) with signatures of pulsation, observed in more than one sector. Our main goal is to explore how large is the variety of classical pulsators such as δ Sc
Externí odkaz:
https://doaj.org/article/f07c53932b8941829d856bab10d020a6
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 496:784-800
We present a multifractal analysis of the long-term light curves of a small sample of type 1 active galactic nuclei: NGC 4151, Arp 102B, 3C 390.3, E1821+643 and NGC 7469. We aim to investigate how the degrees of multifractality of the continuum and H
Autor:
Y. S. Messias, L. L. A. de Oliveira, R. L. Gomes, M. I. Arruda Gonçalves, B. L. Canto Martins, I. C. Leão, J. R. De Medeiros
A dearth of close-in planets orbiting rapid rotators was reported almost a decade ago. According to this view only slowly spinning stars with rotation periods longer than 5-10 days would host planets with orbital periods shorter than 2 or 3 days. Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54791fb3b25e18268f7600b3dd55c023
Autor:
Petr Kabath, K. I. Collins, Florian Rodler, Christopher Stockdale, Sara Seager, T. Lopez, S. Hojjatpanah, Steve B. Howell, S. Sabotta, Nuno C. Santos, David Barrado, Enric Palle, Jan Subjak, M. Esposito, John P. Doty, Rafael Luque, Artyom Aguichine, Karen A. Collins, Olivier Demangeon, Vincent Van Eylen, J. R. De Medeiros, M. Fridlund, N. Scott, Susan E. Mullally, E. Goffo, J. F. Otegi, D. W. Latham, Oscar Barragán, Jon M. Jenkins, Rodrigo F. Díaz, L. M. Serrano, Stéphane Udry, P. Figueira, A. P. Hatzes, Vardan Adibekyan, Davide Gandolfi, P. Cortés-Zuleta, W. Fong, J. Cabrera, Peter J. Wheatley, Seth Redfield, Sascha Grziwa, A. Santerne, Benjamin F. Cooke, Sergio Hoyer, L. Acuña, Daniel Bayliss, J. D. Twicken, S. G. Sousa, A. Osborn, Joshua N. Winn, P. A. Strøm, Hans J. Deeg, E. Delgado Mena, H. P. Osborn, William D. Cochran, Rachel A. Matson, Elise Furlan, Jorge Lillo-Box, P. T. Boyd, John H. Livingston, I. C. Leão, James A. G. Jackman, Edward M. Bryant, François Bouchy, Magali Deleuil, O. Mousis, Jose-Manuel Almenara, Carina M. Persson, Judith Korth, Roland Vanderspek, Louise D. Nielsen, B. L. Canto Martins, David J. Armstrong, Eric L. N. Jensen, Emil Knudstrup, D. A. Yahalomi, Jeffrey C. Smith, S. C. C. Barros, Xavier Dumusque
Publikováno v:
MNRAS
MNRAS, 2021, 505 (3), pp.3361-3379. ⟨10.1093/mnras/stab1427⟩
Monthly Notices of the Royal Astronomical Society: Letters
Monthly Notices of the Royal Astronomical Society: Letters, 2021, 505 (3), pp.3361-3379. ⟨10.1093/mnras/stab1427⟩
Monthly Notices of the Royal Astronomical Society, 505(3), 3361-3379
arXiv
MNRAS, 2021, 505 (3), pp.3361-3379. ⟨10.1093/mnras/stab1427⟩
Monthly Notices of the Royal Astronomical Society: Letters
Monthly Notices of the Royal Astronomical Society: Letters, 2021, 505 (3), pp.3361-3379. ⟨10.1093/mnras/stab1427⟩
Monthly Notices of the Royal Astronomical Society, 505(3), 3361-3379
arXiv
In this paper we report the discovery of TOI-220 $b$, a new sub-Neptune detected by the Transiting Exoplanet Survey Satellite (TESS) and confirmed by radial velocity follow-up observations with the HARPS spectrograph. Based on the combined analysis o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef527754cd7f160b5dec015603de93c0
https://doi.org/10.1093/mnras/stab1427
https://doi.org/10.1093/mnras/stab1427
Autor:
Sara Seager, Eric B. Ting, Felipe Murgas, Nicholas M. Law, D. Maurel, S. Curaba, Tianjun Gan, S. Rochat, Richard G. West, George R. Ricker, Francesco Pepe, René Doyon, P. Kern, Coel Hellier, Jon M. Jenkins, Thibaut Moulin, I. C. Leão, G. Gaisne, Caroline Dorn, Xavier Bonfils, Laurent Jocou, Yves Magnard, J.-J. Correia, Eric Stadler, P. Rabou, C. Melo, Joshua N. Winn, C. Ziegler, J. D. Twicken, C. Lovis, Karen A. Collins, Nicola Astudillo-Defru, B. L. Canto Martins, Aurélien Wyttenbach, X. Delfosse, Alain Roux, Kevin I. Collins, Alain Delboulbé, J. F. Otegi, David R. Anderson, Jose-Manuel Almenara, William Waalkes, Ravit Helled, Marion Cointepas, François Bouchy, J. R. De Medeiros, Roland Vanderspek, Étienne Artigau, David Charbonneau, Pedro Figueira, T. Forveille, David W. Latham, L. Gluck, David R. Rodriguez, Andrew W. Mann, A. Wunsche, S. Lafrasse, Nuno C. Santos, Damien Ségransan, Rodrigo F. Díaz, Stéphane Udry, Philippe Feautrier
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 650, pp.A145. ⟨10.1051/0004-6361/202140328⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 650, pp.A145. ⟨10.1051/0004-6361/202140328⟩
We present the confirmation of a new sub-Neptune close to the transition between super-Earths and sub-Neptunes transiting the M2 dwarf TOI- 269 (TIC 220479565, V = 14.4 mag, J = 10.9 mag, Rstar = 0.40 Rsun, Mstar = 0.39 Msun, d = 57 pc). The exoplane
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c95106a2632f3aecf581576a0871eb5
https://hal-insu.archives-ouvertes.fr/insu-03458413/document
https://hal-insu.archives-ouvertes.fr/insu-03458413/document
Autor:
Thomas Udem, Luca Pasquini, Rafael A. Probst, Antonio Manescau, G. Lo Curto, Rafael Rebolo, Ronald Holzwarth, A. Suárez Mascareño, B. L. Canto Martins, I. C. Leão, Tilo Steinmetz, J. I. González Hernández, M. Esposito, Fei Zhao, J. R. De Medeiros, Gang Zhao
Publikováno v:
Astrophysics & Astronomy
Aims. We study the 2D spectral line profile of HARPS (High Accuracy Radial Velocity Planet Searcher), measuring its variation with position across the detector and with changing line intensity. The characterization of the line profile and its variati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::268f2332696b767709111a372e04bb73
https://hdl.handle.net/21.11116/0000-0007-D5F6-321.11116/0000-0007-D5F8-1
https://hdl.handle.net/21.11116/0000-0007-D5F6-321.11116/0000-0007-D5F8-1
Autor:
Mathieu Ouellet, Francois Wildi, Claudio Melo, Anne-Sophie Poulin-Girard, Denis Brousseau, Étienne Artigau, David Lafrenière, François Bouchy, I. C. Leão, Isabelle Boisse, Allan de Meideros Martins, Stéphane Udry, José Renan de Medeiros, Simon Thibault, Bruno L. Canto Martins, Nuno C. Santos, Rafael Rebolo, Andrew Cumming, Xavier Delfosse, Nicolas Blind, Francesco Pepe, M. Sordet, René Doyon, P. Figueira, Jonay I. González-Hernández, U. Conod, Vladimir Reshetov, Neil Cook, Christophe Lovis, Philippe Vallée, Lison Malo
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy VIII.
NIRPS is a near-infrared (YJH bands), fiber-fed, high-resolution precision radial velocity (pRV) spectrograph currently under construction for deployment at the ESO 3.6-m telescope in La Silla, Chile. Through the use of a dichroic, NIRPS will be oper
Autor:
Dinko Milaković, Ronald Holzwarth, Thomas Udem, B. Toledo-Padrón, Antonio Manescau, Jonay I. González Hernández, Massimiliano Esposito, Yuanjie Wu, Frank Grupp, Anna Brucalassi, Josefina Urrutia, Hanna Kellermann, Luca Pasquini, Bruno L. Canto Martins, Florian Kerber, Alejandro Suárez Mascareño, Rafael Rebolo, Rafael A. Probst, Gaspare Lo Curto, Theodor W. Hänsch, I. C. Leão, José Renan de Medeiros, Eszter Pozna, Olaf Mandel, Tilo Steinmetz, Gerardo Avila
Publikováno v:
Nature astronomy
Laser frequency combs (LFCs) are well on their way to becoming the next-generation calibration sources for precision astronomical spectroscopy. This development is considered key in the hunt for low-mass rocky exoplanets around solar-type stars whose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62c28bc3d33b014de20cb397622384b5
http://arxiv.org/abs/2002.08868
http://arxiv.org/abs/2002.08868
Autor:
Rodolfo Angeloni, C. E. Ferreira Lopes, F Jablonsky, Athanasios Papageorgiou, Juan Carlos Beamin, P. W. Lucas, I. C. Leão, Roberto K. Saito, Nicholas Cross, Karim Pichara, F. R. Herpich, A J Bradley, Vittorio F. Braga, Maren Hempel, Christopher M. P. Russell, Márcio Catelan, J. R. De Medeiros, Javier Alonso-García, Cristián E. Cortés, Dante Minniti
Publikováno v:
Lopes, C E F, Cross, N J G, Catelan, M, Minniti, D, Hempel, M, Lucas, P W, Angeloni, R, Jablonsky, F, Braga, V F, Leao, I C, Herpich, F R, Alonso-Garcia, J, Papageorgiou, A, Pichara, K, Saito, R K, Bradley, A, Beamin, J C, Cortes, C, Medeiros, J R D & Russell, C M P 2020, ' The VISTA Variables in the Vía Láctea infrared variability catalogue (VIVA-I) ', Monthly Notices of the Royal Astronomical Society, vol. 496, no. 2, pp. 1730-1756 . https://doi.org/10.1093/mnras/staa1352
High extinction and crowding create a natural limitation for optical surveys towards the central regions of the Milky Way, where the gas and dust are mainly confined. Large-scale near-infrared (IR) surveys of the Galactic plane and bulge are a good o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0185e772e4ca51ee2400afe9773f1aa9
http://repositorio.unab.cl/xmlui/handle/ria/19523
http://repositorio.unab.cl/xmlui/handle/ria/19523