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1. Expanding the frontiers of cool-dwarf asteroseismology with ESPRESSO. Detection of solar-like oscillations in the K5 dwarf ϵ Indi

Author

Campante, T. L., primary, Kjeldsen, H., additional, Li, Y., additional, Lund, M. N., additional, Silva, A. M., additional, Corsaro, E., additional, Gomes da Silva, J., additional, Martins, J. H. C., additional, Adibekyan, V., additional, Azevedo Silva, T., additional, Bedding, T. R., additional, Bossini, D., additional, Buzasi, D. L., additional, Chaplin, W. J., additional, Costa, R. R., additional, Cunha, M. S., additional, Cristo, E., additional, Faria, J. P., additional, García, R. A., additional, Huber, D., additional, Lundkvist, M. S., additional, Metcalfe, T. S., additional, Monteiro, M. J. P. F. G., additional, Neitzel, A. W., additional, Nielsen, M. B., additional, Poretti, E., additional, Santos, N. C., additional, and Sousa, S. G., additional

Published
2024
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3. Wapiti: A data-driven approach to correct for systematics in RV data

Author

Ould-Elhkim, M., primary, Moutou, C., additional, Donati, J.-F., additional, Artigau, É., additional, Fouqué, P., additional, Cook, N.J., additional, Carmona, A., additional, Cristofari, P. I., additional, Martioli, E., additional, Debras, F., additional, Dumusque, X., additional, Martins, J. H. C., additional, Hébrard, G., additional, Cadieux, C., additional, Delfosse, X., additional, Doyon, R., additional, Klein, B., additional, Gomes da Silva, J., additional, Forveille, T., additional, Hood, T., additional, and Charpentier, P., additional

Published
2023
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4. TESS and CHEOPS discover two warm sub-Neptunes transiting the bright K-dwarf HD 15906

Author

Tuson, A, Queloz, D, Osborn, H P, Wilson, T G, Hooton, M J, Beck, M, Lendl, M, Olofsson, G, Fortier, A, Bonfanti, A, Brandeker, A, Buchhave, L A, Collier Cameron, A, Ciardi, D R, Collins, K A, Gandolfi, D, Garai, Z, Giacalone, S, Gomes da Silva, J, Howell, S B, Patel, J A, Persson, C M, Serrano, L M, Sousa, S G, Ulmer-Moll, S, Vanderburg, A, Ziegler, C, Alibert, Y, Alonso, R, Anglada, G, Bárczy, T, Barrado Navascues, D, Barros, S C C, Baumjohann, W, Beck, T, Benz, W, Billot, N, Bonfils, X, Borsato, L, Broeg, C, Cabrera, J, Charnoz, S, Conti, D M, Csizmadia, Sz, Cubillos, P E, Davies, M B, Deleuil, M, Delrez, L, Demangeon, O D S, Demory, B-O, Dragomir, D, Dressing, C D, Ehrenreich, D, Erikson, A, Essack, Z, Farinato, J, Fossati, L, Fridlund, M, Furlan, E, Gill, H, Gillon, M, Gnilka, C L, Gonzales, E, Güdel, M, Günther, M N, Hoyer, S, Isaak, K G, Jenkins, J M, Kiss, L L, Laskar, J, Latham, D W, Law, N, Lecavelier des Etangs, A, Curto, G Lo, Lovis, C, Luque, R, Magrin, D, Mann, A W, Maxted, P F L, Mayor, M, McDermott, S, Mecina, M, Mordasini, C, Mortier, A, Nascimbeni, V, Ottensamer, R, Pagano, I, Pallé, E, Peter, G, Piotto, G, Pollacco, D, Pritchard, T, Ragazzoni, R, Rando, N, Ratti, F, Rauer, H, Ribas, I, Ricker, G R, Rieder, M, Santos, N C, Savel, A B, Scandariato, G, Schwarz, R P, Seager, S, Ségransan, D, Shporer, A, Simon, A E, Smith, A M S, Steller, M, Stockdale, C, Szabó, Gy M, Thomas, N, Torres, G, Tronsgaard, R, Udry, S, Ulmer, B, Van Grootel, V, Vanderspek, R, Venturini, J, Walton, N A, Winn, J N, Wohler, B, University of St Andrews. School of Physics and Astronomy, and University of St Andrews. St Andrews Centre for Exoplanet Science

Subjects
MCP, DAS
Abstract

We report the discovery of two warm sub-Neptunes transiting the bright (G = 9.5 mag) K-dwarf HD 15906 (TOI 461, TIC 4646810). This star was observed by the Transiting Exoplanet Survey Satellite (TESS) in sectors 4 and 31, revealing two small transiting planets. The inner planet, HD 15906 b, was detected with an unambiguous period but the outer planet, HD 15906 c, showed only two transits separated by ∼ 734 d, leading to 36 possible values of its period. We performed follow-up observations with the CHaracterising ExOPlanet Satellite (CHEOPS) to confirm the true period of HD 15906 c and improve the radius precision of the two planets. From TESS, CHEOPS, and additional ground-based photometry, we find that HD 15906 b has a radius of 2.24 ± 0.08 R⊕ and a period of 10.924709 ± 0.000032 d, whilst HD 15906 c has a radius of 2.93$^{+0.07}_{-0.06}$ R⊕ and a period of 21.583298$^{+0.000052}_{-0.000055}$ d. Assuming zero bond albedo and full day-night heat redistribution, the inner and outer planet have equilibrium temperatures of 668 ± 13 K and 532 ± 10 K, respectively. The HD 15906 system has become one of only six multiplanet systems with two warm (≲ 700 K) sub-Neptune sized planets transiting a bright star (G ≤ 10 mag). It is an excellent target for detailed characterization studies to constrain the composition of sub-Neptune planets and test theories of planet formation and evolution. Publisher PDF

Published
2023

5. TESS and CHEOPS Discover Two Warm Sub-Neptunes Transiting the Bright K-dwarf HD 15906

Author

Tuson, A., Queloz, D., Osborn, H. P., Wilson, T. G., Hooton, M. J., Beck, M., Lendl, M., Olofsson, G., Fortier, A., Bonfanti, A., Brandeker, A., Buchhave, L. A., Collier Cameron, A., Ciardi, D. R., Collins, K. A., Gandolfi, D., Garai, Z., Giacalone, S., Gomes da Silva, J., Howell, S. B., Patel, J. A., Persson, C. M., Serrano, L. M., Sousa, S. G., Ulmer-Moll, S., Vanderburg, A., Ziegler, C., Alibert, Y., Alonso, R., Anglada, G., Bàrczy, T., Barrado Navascues, D., Barros, S. C. C., Baumjohann, W., Beck, T., Benz, W., Billot, N., Bonfils, X., Borsato, L., Broeg, C., Cabrera, J., Charnoz, S., Conti, D. M., Csizmadia, Szilard, Cubillos, P. E., Davies, M. B., Deleuil, M., Delrez, L., Demangeon, O. D. S., Demory, B. -O., Dragomir, D., Dressing, C. D., Ehrenreich, D., Erikson, A., Essack, Z., Farinato, J., Fossati, L., Fridlund, M., Furlan, E., Gill, H., Gillon, M., Gnilka, C. L., Gonzales, E.J., Güdel, M., Günther, M. N., Hoyer, S., Isaak, K. G., Jenkins, J. M., Kiss, L. L., Laskar, J., Latham, D. W., Law, N., Lecavelier des Etangs, A., Curto, G. Lo, Lovis, C., Luque, R., Magrin, D., Mann, A. W., Maxted, P. F. L., Mayor, M., McDermott, S., Mecina, M., Mordasini, C., Mortier, A., Nascimbeni, V., Ottensamer, R., Pagano, I., Palle, E., Peter, G., Piotto, G., Pollacco, D., Pritchard, T., Ragazzoni, R., Rando, N., Ratti, F., Rauer, H, Ribas, I., Ricker, G. R., Rieder, M., Santos, N. C., Savel, A. B., Scandariato, G., Schwarz, R. P., Seager, S., Ségransan, D., Shporer, A., Simon, A. E., Smith, A. M. S., Steller, M., Stockdale, C., Szabó, Gy. M., Thomas, N., Torres, G., Tronsgaard, R., Udry, S., Ulmer, B., Van Grootel, V., Vanderspek, R., Venturini, J., Walton, N. A., Winn, J. N., Wohler, B., Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, Institut de Physique du Globe de Paris (IPGP (UMR_7154)), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), and Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Earth and Planetary Astrophysics (astro-ph.EP), planets and satellites: detection, fundamental parameters [Planets and satellites], photometric [Techniques], TIC 4646810), individual: HD 15906 (TOI 461, TIC 4646810) [Stars], FOS: Physical sciences, fundamental parameters [Stars], detection [Planets and satellites], techniques: photometric, [SDU]Sciences of the Universe [physics], stars: fundamental parameters, stars: individual: HD 15906 (TOI 461, planets and satellites: fundamental parameters, Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the discovery of two warm sub-Neptunes transiting the bright (G = 9.5 mag) K-dwarf HD 15906 (TOI 461, TIC 4646810). This star was observed by the Transiting Exoplanet Survey Satellite (TESS) in sectors 4 and 31, revealing two small transiting planets. The inner planet, HD 15906 b, was detected with an unambiguous period but the outer planet, HD 15906 c, showed only two transits separated by $\sim$ 734 days, leading to 36 possible values of its period. We performed follow-up observations with the CHaracterising ExOPlanet Satellite (CHEOPS) to confirm the true period of HD 15906 c and improve the radius precision of the two planets. From TESS, CHEOPS and additional ground-based photometry, we find that HD 15906 b has a radius of 2.24 $\pm$ 0.08 R$_\oplus$ and a period of 10.924709 $\pm$ 0.000032 days, whilst HD 15906 c has a radius of 2.93$^{+0.07}_{-0.06}$ R$_\oplus$ and a period of 21.583298$^{+0.000052}_{-0.000055}$ days. Assuming zero bond albedo and full day-night heat redistribution, the inner and outer planet have equilibrium temperatures of 668 $\pm$ 13 K and 532 $\pm$ 10 K, respectively. The HD 15906 system has become one of only six multiplanet systems with two warm ($\lesssim$ 700 K) sub-Neptune sized planets transiting a bright star (G $\leq$ 10 mag). It is an excellent target for detailed characterisation studies to constrain the composition of sub-Neptune planets and test theories of planet formation and evolution., 30 pages, 20 figures, 11 tables (including appendix). Published in MNRAS

Published
2023

6. Optical and near-infrared stellar activity characterization of the early M dwarf Gl 205 with SOPHIE and SPIRou

Author

Cortés-Zuleta, P., primary, Boisse, I., additional, Klein, B., additional, Martioli, E., additional, Cristofari, P. I., additional, Antoniadis-Karnavas, A., additional, Donati, J.-F., additional, Delfosse, X., additional, Cadieux, C., additional, Heidari, N., additional, Artigau, É., additional, Bellotti, S., additional, Bonfils, X., additional, Carmona, A., additional, Cook, N. J., additional, Díaz, R. F., additional, Doyon, R., additional, Fouqué, P., additional, Moutou, C., additional, Petit, P., additional, Vandal, T., additional, Acuña, L., additional, Arnold, L., additional, Astudillo-Defru, N., additional, Bourrier, V., additional, Bouchy, F., additional, Cloutier, R., additional, Dalal, S., additional, Deleuil, M., additional, Demangeon, O. D. S., additional, Dumusque, X., additional, Forveille, T., additional, Gomes da Silva, J., additional, Hara, N., additional, Hébrard, G., additional, Hoyer, S., additional, Hussain, G., additional, Kiefer, F., additional, Morin, J., additional, Santerne, A., additional, Santos, N. C., additional, Segransan, D., additional, Stalport, M., additional, and Udry, S., additional

Published
2023
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7. A sub-Neptune planet around TOI-1695 discovered and characterized with SPIRou and TESS

Author

Kiefer, F., primary, Hébrard, G., additional, Martioli, E., additional, Artigau, E., additional, Doyon, R., additional, Donati, J.-F., additional, Cadieux, C., additional, Carmona, A., additional, Ciardi, D. R., additional, Cristofari, P. I., additional, de Almeida, L., additional, Figueira, P., additional, Gaidos, E., additional, Gonzales, E., additional, Lecavelier Des Etangs, A., additional, Stassun, K. G., additional, Arnold, L., additional, Benneke, B., additional, Boisse, I., additional, Bonfils, X., additional, Cook, N. J., additional, Cortés-Zuleta, P., additional, Delfosse, X., additional, do Nascimento, J. Dias, additional, Fausnaugh, M., additional, Fong, W., additional, Fouqué, P., additional, Forveille, T., additional, Gomes da Silva, J., additional, Hesse, K., additional, Kóspál, Á., additional, Lewis, H., additional, Liu, C.-F., additional, Martins, J. H. C., additional, Paegert, M., additional, Seager, S., additional, Shang, H., additional, Twicken, J. D., additional, Vandal, T., additional, Vinatier, S., additional, Widemann, T., additional, and Winn, J. N., additional

Published
2023
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9. Uncovering the true periods of the young sub-Neptunes orbiting TOI-2076

Author

Osborn, H. P., primary, Bonfanti, A., additional, Gandolfi, D., additional, Hedges, C., additional, Leleu, A., additional, Fortier, A., additional, Futyan, D., additional, Gutermann, P., additional, Maxted, P. F. L., additional, Borsato, L., additional, Collins, K. A., additional, Gomes da Silva, J., additional, Gómez Maqueo Chew, Y., additional, Hooton, M. J., additional, Lendl, M., additional, Parviainen, H., additional, Salmon, S., additional, Schanche, N., additional, Serrano, L. M., additional, Sousa, S. G., additional, Tuson, A., additional, Ulmer-Moll, S., additional, Van Grootel, V., additional, Wells, R. D., additional, Wilson, T. G., additional, Alibert, Y., additional, Alonso, R., additional, Anglada, G., additional, Asquier, J., additional, Barrado y Navascues, D., additional, Baumjohann, W., additional, Beck, T., additional, Benz, W., additional, Biondi, F., additional, Bonfils, X., additional, Bouchy, F., additional, Brandeker, A., additional, Broeg, C., additional, Bárczy, T., additional, Barros, S. C. C., additional, Cabrera, J., additional, Charnoz, S., additional, Collier Cameron, A., additional, Csizmadia, S., additional, Davies, M. B., additional, Deleuil, M., additional, Delrez, L., additional, Demory, B.-O., additional, Ehrenreich, D., additional, Erikson, A., additional, Fossati, L., additional, Fridlund, M., additional, Gillon, M., additional, Gömez-Munoz, M. A., additional, Güdel, M., additional, Heng, K., additional, Hoyer, S., additional, Isaak, K. G., additional, Kiss, L., additional, Laskar, J., additional, Lecavelier des Etangs, A., additional, Lovis, C., additional, Magrin, D., additional, Malavolta, L., additional, McCormac, J., additional, Nascimbeni, V., additional, Olofsson, G., additional, Ottensamer, R., additional, Pagano, I., additional, Pallé, E., additional, Peter, G., additional, Piazza, D., additional, Piotto, G., additional, Pollacco, D., additional, Queloz, D., additional, Ragazzoni, R., additional, Rando, N., additional, Rauer, H., additional, Reimers, C., additional, Ribas, I., additional, Demangeon, O. D. S., additional, Smith, A. M. S., additional, Sabin, L., additional, Santos, N., additional, Scandariato, G., additional, Schroffenegger, U., additional, Schwarz, R. P., additional, Shporer, A., additional, Simon, A. E., additional, Steller, M., additional, Szabó, G. M., additional, Ségransan, D., additional, Thomas, N., additional, Udry, S., additional, Walter, I., additional, and Walton, N., additional

Published
2022
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10. TOI-1759 b: A transiting sub-Neptune around a low mass star characterized with SPIRou and TESS

Author

Martioli, E., primary, Hébrard, G., additional, Fouqué, P., additional, Artigau, É., additional, Donati, J.-F., additional, Cadieux, C., additional, Bellotti, S., additional, Lecavelier des Etangs, A., additional, Doyon, R., additional, do Nascimento, J.-D., additional, Arnold, L., additional, Carmona, A., additional, Cook, N. J., additional, Cortes-Zuleta, P., additional, de Almeida, L., additional, Delfosse, X., additional, Folsom, C. P., additional, König, P.-C., additional, Moutou, C., additional, Ould-Elhkim, M., additional, Petit, P., additional, Stassun, K. G., additional, Vidotto, A. A., additional, Vandal, T., additional, Benneke, B., additional, Boisse, I., additional, Bonfils, X., additional, Boyd, P., additional, Brasseur, C., additional, Charbonneau, D., additional, Cloutier, R., additional, Collins, K., additional, Cristofari, P., additional, Crossfield, I., additional, Díaz, R. F., additional, Fausnaugh, M., additional, Figueira, P., additional, Forveille, T., additional, Furlan, E., additional, Girardin, E., additional, Gnilka, C. L., additional, Gomes da Silva, J., additional, Gu, P.-G., additional, Guerra, P., additional, Howell, S. B., additional, Hussain, G. A. J., additional, Jenkins, J. M., additional, Kiefer, F., additional, Latham, D. W., additional, Matson, R. A., additional, Matthews, E. C., additional, Morin, J., additional, Naves, R., additional, Ricker, G., additional, Seager, S., additional, Takami, M., additional, Twicken, J. D., additional, Vanderburg, A., additional, Vanderspek, R., additional, and Winn, J., additional

Published
2022
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11. Stellar chromospheric activity of 1674 FGK stars from the AMBRE-HARPS sample

Author

Gomes da Silva, J., primary, Santos, N. C., additional, Adibekyan, V., additional, Sousa, S. G., additional, Campante, T. L., additional, Figueira, P., additional, Bossini, D., additional, Delgado-Mena, E., additional, Monteiro, M. J. P. F. G., additional, de Laverny, P., additional, Recio-Blanco, A., additional, and Lovis, C., additional

Published
2021
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13. The correlation between photometric variability and radial velocity jitter

Author

Hojjatpanah, S., primary, Oshagh, M., additional, Figueira, P., additional, Santos, N. C., additional, Amazo-Gómez, E. M., additional, Sousa, S. G., additional, Adibekyan, V., additional, Akinsanmi, B., additional, Demangeon, O., additional, Faria, J., additional, Gomes da Silva, J., additional, and Meunier, N., additional

Published
2020
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14. Decoding the radial velocity variations of HD 41248 with ESPRESSO

Author

Faria, J. P., primary, Adibekyan, V., additional, Amazo-Gómez, E. M., additional, Barros, S. C. C., additional, Camacho, J. D., additional, Demangeon, O., additional, Figueira, P., additional, Mortier, A., additional, Oshagh, M., additional, Pepe, F., additional, Santos, N. C., additional, Gomes da Silva, J., additional, Costa Silva, A. R., additional, Sousa, S. G., additional, Ulmer-Moll, S., additional, and Viana, P. T. P., additional

Published
2020
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19. Periodic Event-Triggered Control for Linear Systems in the Presence of Cone-Bounded Nonlinear Inputs: A Discrete-Time Approach.

Author

Merlin, G. B., Moreira, L. G., and Gomes da Silva, J. M.

Subjects
LINEAR control systems, LINEAR matrix inequalities, CLOSED loop systems, LINEAR systems
Abstract

This paper presents an observer-based periodic event-triggered strategy for linear systems subject to input cone-bounded nonlinearities. Considering a discrete-time framework, conditions in the form of linear matrix inequalities are derived to ensure global or regional stability of the origin of the closed-loop system under the event-triggered control strategy. These conditions are cast into convex optimization problems to determine the event-triggering function parameters, aiming at reducing the number of control updates with respect to periodic implementations. Both the emulation and the co-design problems are addressed. Numerical examples with logarithmic quantization and saturation nonlinearities are presented to illustrate the method. [ABSTRACT FROM AUTHOR]

Published
2021
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20. Planets around evolved intermediate-mass stars

Author

Delgado Mena, E., primary, Lovis, C., additional, Santos, N. C., additional, Gomes da Silva, J., additional, Mortier, A., additional, Tsantaki, M., additional, Sousa, S. G., additional, Figueira, P., additional, Cunha, M. S., additional, Campante, T. L., additional, Adibekyan, V., additional, Faria, J. P., additional, and Montalto, M., additional

Published
2018
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23. Is the activity level of HD 80606 influenced by its eccentric planet?

Author

Figueira, P., primary, Santerne, A., additional, Suárez Mascareño, A., additional, Gomes da Silva, J., additional, Abe, L., additional, Adibekyan, V. Zh., additional, Bendjoya, P., additional, Correia, A. C. M., additional, Delgado-Mena, E., additional, Faria, J. P., additional, Hebrard, G., additional, Lovis, C., additional, Oshagh, M., additional, Rivet, J.-P., additional, Santos, N. C., additional, Suarez, O., additional, and Vidotto, A. A., additional

Published
2016
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28. The PLATO 2.0 mission

Author

Rauer, H., Catala, C., Aerts, C., Appourchaux, T., Benz, W., Brandeker, Aexis, Christensen-Dalsgaard, J., Deleuil, M., Gizon, L., Goupil, M. -J, Guedel, M., Janot-Pacheco, E., Mas-Hesse, M., Pagano, I., Piotto, G., Pollacco, D., Santos, N. C., Smith, A., Suarez, J. -C, Szabo, R., Udry, S., Adibekyan, V., Alibert, Y., Almenara, J. -M, Maro-Seoane, P. A., Ammler-von Eiff, M., Asplund, M., Antonello, E., Barnes, S., Baudin, F., Belkacem, K., Bergemann, M., Bihain, G., Birch, A. C., Bonfils, X., Boisse, I., Bonomo, A. S., Borsa, F., Brandao, I. M., Brocato, E., Brun, S., Burleigh, M., Burston, R., Cabrera, J., Cassisi, S., Chaplin, W., Charpinet, S., Chiappini, C., Church, R. P., Csizmadia, Sz., Cunha, M., Damasso, M., Davies, M. B., Deeg, H. J., Diaz, R. F., Dreizler, S., Dreyer, C., Eggenberger, P., Ehrenreich, D., Eigmueller, P., Erikson, A., Farmer, R., Feltzing, S., de Oliveira Fialho, F., Figueira, P., Forveille, T., Fridlund, M., Garcia, R. A., Giommi, P., Giuffrida, G., Godolt, M., Gomes da Silva, J., Granzer, T., Grenfell, J. L., Grotsch-Noels, A., Guenther, E., Haswell, C. A., Hatzes, A. P., Hebrard, G., Hekker, S., Helled, R., Heng, K., Jenkins, J. M., Johansen, A., Khodachenko, M. L., Kislyakova, K. G., Kley, W., Kolb, U., Krivova, N., Kupka, F., Lammer, H., Lanza, A. F., Lebreton, Y., Magrin, D., Marcos-Arenal, P., Marrese, P. M., Marques, J. P., Martins, J., Mathis, S., Mathur, S., Messina, S., Miglio, A., Montalban, J., Montalto, M., Monteiro, M. J. P. F. G., Moradi, H., Moravveji, E., Mordasini, C., Morel, T., Mortier, A., Nascimbeni, V., Nelson, R. P., Nielsen, M. B., Noack, L., Norton, A. J., Ofir, A., Oshagh, M., Ouazzani, R. -M, Papics, P., Parro, V. C., Petit, P., Plez, B., Poretti, E., Quirrenbach, A., Ragazzoni, R., Raimondo, G., Rainer, M., Reese, D. R., Redmer, R., Reffert, S., Rojas-Ayala, B., Roxburgh, I. W., Salmon, S., Santerne, A., Schneider, J., Schou, J., Schuh, S., Schunker, H., Silva-Valio, A., Silvotti, R., Skillen, I., Snellen, I., Sohl, F., Sousa, S. G., Sozzetti, A., Stello, D., Strassmeier, K. G., Svanda, M., Szabo, Gy. M., Tkachenko, A., Valencia, D., Van Grootel, V., Vauclair, S. D., Ventura, P., Wagner, F. W., Walton, N. A., Weingrill, J., Werner, S. C., Wheatley, P. J., Zwintz, K., Rauer, H., Catala, C., Aerts, C., Appourchaux, T., Benz, W., Brandeker, Aexis, Christensen-Dalsgaard, J., Deleuil, M., Gizon, L., Goupil, M. -J, Guedel, M., Janot-Pacheco, E., Mas-Hesse, M., Pagano, I., Piotto, G., Pollacco, D., Santos, N. C., Smith, A., Suarez, J. -C, Szabo, R., Udry, S., Adibekyan, V., Alibert, Y., Almenara, J. -M, Maro-Seoane, P. A., Ammler-von Eiff, M., Asplund, M., Antonello, E., Barnes, S., Baudin, F., Belkacem, K., Bergemann, M., Bihain, G., Birch, A. C., Bonfils, X., Boisse, I., Bonomo, A. S., Borsa, F., Brandao, I. M., Brocato, E., Brun, S., Burleigh, M., Burston, R., Cabrera, J., Cassisi, S., Chaplin, W., Charpinet, S., Chiappini, C., Church, R. P., Csizmadia, Sz., Cunha, M., Damasso, M., Davies, M. B., Deeg, H. J., Diaz, R. F., Dreizler, S., Dreyer, C., Eggenberger, P., Ehrenreich, D., Eigmueller, P., Erikson, A., Farmer, R., Feltzing, S., de Oliveira Fialho, F., Figueira, P., Forveille, T., Fridlund, M., Garcia, R. A., Giommi, P., Giuffrida, G., Godolt, M., Gomes da Silva, J., Granzer, T., Grenfell, J. L., Grotsch-Noels, A., Guenther, E., Haswell, C. A., Hatzes, A. P., Hebrard, G., Hekker, S., Helled, R., Heng, K., Jenkins, J. M., Johansen, A., Khodachenko, M. L., Kislyakova, K. G., Kley, W., Kolb, U., Krivova, N., Kupka, F., Lammer, H., Lanza, A. F., Lebreton, Y., Magrin, D., Marcos-Arenal, P., Marrese, P. M., Marques, J. P., Martins, J., Mathis, S., Mathur, S., Messina, S., Miglio, A., Montalban, J., Montalto, M., Monteiro, M. J. P. F. G., Moradi, H., Moravveji, E., Mordasini, C., Morel, T., Mortier, A., Nascimbeni, V., Nelson, R. P., Nielsen, M. B., Noack, L., Norton, A. J., Ofir, A., Oshagh, M., Ouazzani, R. -M, Papics, P., Parro, V. C., Petit, P., Plez, B., Poretti, E., Quirrenbach, A., Ragazzoni, R., Raimondo, G., Rainer, M., Reese, D. R., Redmer, R., Reffert, S., Rojas-Ayala, B., Roxburgh, I. W., Salmon, S., Santerne, A., Schneider, J., Schou, J., Schuh, S., Schunker, H., Silva-Valio, A., Silvotti, R., Skillen, I., Snellen, I., Sohl, F., Sousa, S. G., Sozzetti, A., Stello, D., Strassmeier, K. G., Svanda, M., Szabo, Gy. M., Tkachenko, A., Valencia, D., Van Grootel, V., Vauclair, S. D., Ventura, P., Wagner, F. W., Walton, N. A., Weingrill, J., Werner, S. C., Wheatley, P. J., and Zwintz, K.

Abstract

PLATO 2.0 has recently been selected for ESA's M3 launch opportunity (2022/24). Providing accurate key planet parameters (radius, mass, density and age) in statistical numbers, it addresses fundamental questions such as: How do planetary systems form and evolve? Are there other systems with planets like ours, including potentially habitable planets? The PLATO 2.0 instrument consists of 34 small aperture telescopes (32 with 25 s readout cadence and 2 with 2.5 s cadence) providing a wide field-of-view (2232 deg(2)) and a large photometric magnitude range (4-16 mag). It focuses on bright (4-11 mag) stars in wide fields to detect and characterize planets down to Earth-size by photometric transits, whose masses can then be determined by ground-based radial-velocity follow-up measurements. Asteroseismology will be performed for these bright stars to obtain highly accurate stellar parameters, including masses and ages. The combination of bright targets and asteroseismology results in high accuracy for the bulk planet parameters: 2 %, 4-10 % and 10 % for planet radii, masses and ages, respectively. The planned baseline observing strategy includes two long pointings (2-3 years) to detect and bulk characterize planets reaching into the habitable zone (HZ) of solar-like stars and an additional step-and-stare phase to cover in total about 50 % of the sky. PLATO 2.0 will observe up to 1,000,000 stars and detect and characterize hundreds of small planets, and thousands of planets in the Neptune to gas giant regime out to the HZ. It will therefore provide the first large-scale catalogue of bulk characterized planets with accurate radii, masses, mean densities and ages. This catalogue will include terrestrial planets at intermediate orbital distances, where surface temperatures are moderate. Coverage of this parameter range with statistical numbers of bulk characterized planets is unique to PLATO 2.0. The PLATO 2.0 catalogue allows us to e. g.: - complete our knowledge of planet di, AuthorCount:160

Published
2014
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30. Dispersion Impact on Ballistic CNTFET n+-i-n+ Performances

Author

Desgreys, Patricia, Gomes Da Silva, J., Robert, D., Laboratoire Traitement et Communication de l'Information (LTCI), and Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Condensed Matter - Materials Science, PACS : 85.35.-p, Dispersion Impact, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, CNTFET, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Compact Modeling
Abstract

The designs integrating the promising carbon nanotube transistors (CNTFET) will have to take into account the constraints implied by the strong dispersion inherent to nanotube manufacturing. This paper proposes to characterize the main CNTFET performances : on-current Ion, Ion/Ioff ratio and inverse sub-threshold slope S according to the dispersion on the nanotube diameter. For this purpose, we use a compact model suitable for testing several diameter values., Comment: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)

Published
2007
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32. The HARPS search for southern extra-solar planets

Author

Santos, N. C., primary, Mortier, A., additional, Faria, J. P., additional, Dumusque, X., additional, Adibekyan, V. Zh., additional, Delgado-Mena, E., additional, Figueira, P., additional, Benamati, L., additional, Boisse, I., additional, Cunha, D., additional, Gomes da Silva, J., additional, Lo Curto, G., additional, Lovis, C., additional, Martins, J. H. C., additional, Mayor, M., additional, Melo, C., additional, Oshagh, M., additional, Pepe, F., additional, Queloz, D., additional, Santerne, A., additional, Ségransan, D., additional, Sozzetti, A., additional, Sousa, S. G., additional, and Udry, S., additional

Published
2014
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46. Functional protein C levels in septic patients

Author

Lafuente, E, primary, Pratima, I, additional, Fernandes, M, additional, Gomes da Silva, J, additional, Moura, F, additional, Santos, F, additional, Guimaraes, I, additional, Lopes, R, additional, and Santos, P, additional

Published
2007
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47. Local input-to-state stabilization and ℓ ∞ -induced norm control of discrete-time quadratic systems.

Author

Souza, C. E., Coutinho, D., and Gomes da Silva, J. M.

Subjects
LINEAR matrix inequalities, EMPLOYMENT stabilization, ACTUATORS, QUADRATIC equations, ALGEBRAIC equations
Abstract

This paper addresses the problems of local stabilization and control of open-loop unstable discrete-time quadratic systems subject to persistent magnitude bounded disturbances and actuator saturation. Firstly, for some polytopic region of the state-space containing the origin, a method is derived to design a static nonlinear state feedback control law that achieves local input-to-state stabilization with a guaranteed stability region under nonzero initial conditions and persistent bounded disturbances. Secondly, the stabilization method is extended to deliver an optimized upper bound on the ℓ ∞ -induced norm of the closed-loop system for a given set of persistent bounded disturbances. Thirdly, the stabilization and ℓ ∞ designs are adapted to cope with actuator saturation by means of a generalized sector bound constraint. The proposed controller designs are tailored via a finite set of state-dependent linear matrix inequalities. Numerical examples are presented to illustrate the potentials of the proposed control design methods. Copyright © 2014 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Published
2015
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