Zobrazeno 1 - 10
of 959
pro vyhledávání: '"Meunier N"'
Autor:
Sulis, S., Crossfield, I. J. M., Santerne, A., Saillenfest, M., Sousa, S., Mary, D., Aguichine, A., Deleuil, M., Mena, E. Delgado, Mathur, S., Polanski, A., Adibekyan, V., Boisse, I., Costes, J. C., Cretignier, M., Heidari, N., Lebarbé, C., Forveille, T., Hara, N., Meunier, N., Santos, N., Balcarcel-Salazar, S., Cortés-Zuleta, P., Dalal, S., Gorjian, V., Halverson, S., Howard, A. W., Kosiarek, M. R., Lopez, T. A., Martin, D. V., Mousis, O., Rajkumar, B., Ström, P. A., Udry, S., Venot, O., Willett, E.
Context. Planets with radii of between 2-4 RE closely orbiting solar-type stars are of significant importance for studying the transition from rocky to giant planets. Aims. Our goal is to determine the mass of a transiting planet around the very brig
Externí odkaz:
http://arxiv.org/abs/2405.17155
To detect Earth-mass planets using the Doppler method, a major obstacle is to differentiate the planetary signal from intrinsic stellar variability (e.g., pulsations, granulation, spots and plages). Convective blueshift, which results from small-scal
Externí odkaz:
http://arxiv.org/abs/2307.06986
Autor:
Chomez, A., Lagrange, A. -M., Delorme, P., Langlois, M., Chauvin, G., Flasseur, O., Dallant, J., Philipot, F., Bergeon, S., Albert, D., Meunier, N., Rubini, P.
Publikováno v:
A&A 675, A205 (2023)
We aim at searching for exoplanets on the whole ESO/VLT-SPHERE archive with improved and unsupervised data analysis algorithm that could allow to detect massive giant planets at 5 au. To prepare, test and optimize our approach, we gathered a sample o
Externí odkaz:
http://arxiv.org/abs/2305.08766
Autor:
Lagrange, A. -M., Philipot, F., Rubini, P., Meunier, N., Kiefer, F., Kervella, P., Delorme, P., Beust, H.
Publikováno v:
A&A 677, A71 (2023)
Context. Giant planets play a major role in multiple planetary systems. Knowing their demographics is important to test their overall impact on planetary systems formation. It is also important to test their formation processes. Recently, three radia
Externí odkaz:
http://arxiv.org/abs/2305.00047
Autor:
Mignon, L., Meunier, N., Delfosse, X., Bonfils, X., Santos, N. C., Forveille, T., Gaisné, G., Astudillo-Defru, N., Lovis, C., Udry, S.
Publikováno v:
A&A 675, A168 (2023)
M dwarfs are active stars that exhibit variability in chromospheric emission and photometry at short and long timescales, including long cycles that are related to dynamo processes. This activity also impacts the search for exoplanets because it affe
Externí odkaz:
http://arxiv.org/abs/2303.03998
Autor:
Grandjean, Antoine, Lagrange, A. -M., Meunier, N., Chauvin, G., Borgniet, S., Desidera, S., Galland, F., Kiefer, F., Messina, S., Iglesias, D., Nicholson, B., Pantoja, B., Rubini, P., Sedaghati, E., Sterzik, M., Zicher, N.
Publikováno v:
A&A 669, A12 (2023)
The Scorpius-Centaurus (Sco-Cen) young and nearby massive star-forming region is particularly well suited for extrasolar planet searches with both direct imaging and radial velocity (RV) techniques. The RV search, however, is challenging, as the star
Externí odkaz:
http://arxiv.org/abs/2210.04298
Autor:
Hinkley, S., Lacour, S., Marleau, G. -D., Lagrange, A. M., Wang, J. J., Kammerer, J., Cumming, A., Nowak, M., Rodet, L., Stolker, T., Balmer, W. -O., Ray, S., Bonnefoy, M., Mollière, P., Lazzoni, C., Kennedy, G., Mordasini, C., Abuter, R., Aigrain, S., Amorim, A., Asensio-Torres, R., Babusiaux, C., Benisty, M., Berger, J. -P., Beust, H., Blunt, S., Boccaletti, A., Bohn, A., Bonnet, H., Bourdarot, G., Brandner, W., Cantalloube, F., Caselli, P., Charnay, B., Chauvin, G., Chomez, A., Choquet, E., Christiaens, V., Clénet, Y., Foresto, V. Coudé du, Cridland, A., Delorme, P., Dembet, R., de Zeeuw, P. T., Drescher, A., Duvert, G., Eckart, A., Eisenhauer, F., Feuchtgruber, H., Galland, F., Garcia, P., Lopez, R. Garcia, Gardner, T., Gendron, E., Genzel, R., Gillessen, S., Girard, J. H., Grandjean, A., Haubois, X., Heißel, G., Henning, Th., Hippler, S., Horrobin, M., Houllé, M., Hubert, Z., Jocou, L., Keppler, M., Kervella, P., Kreidberg, L., Lapeyrère, V., Bouquin, J. -B. Le, Léna, P., Lutz, D., Maire, A. -L., Mang, F., Mérand, A., Meunier, N., Monnier, J. D., Mouillet, D., Nasedkin, E., Ott, T., Otten, G. P. P. L., Paladini, C., Paumard, T., Perraut, K., Perrin, G., Philipot, F., Pfuhl, O., Pourré, N., Pueyo, L., Rameau, J., Rickman, E., Rubini, P., Rustamkulov, Z., Samland, M., Shangguan, J., Shimizu, T., Sing, D., Straubmeier, C., Sturm, E., Tacconi, L. J., van Dishoeck, E. F., Vigan, A., Vincent, F., Ward-Duong, K., Widmann, F., Wieprecht, E., Wiezorrek, E., Woillez, J., Yazici, S., Young, A., Zicher, N., Collaboration, the GRAVITY
Long term precise radial velocity (RV) monitoring of the nearby star HD206893, as well as anomalies in the system proper motion, have suggested the presence of an additional, inner companion in the system. Here we describe the results of a multi-epoc
Externí odkaz:
http://arxiv.org/abs/2208.04867
Autor:
Etangs, A. Lecavelier des, Cros, L., Hébrard, G., Martioli, E., Duquesnoy, M., Kenworthy, M. A., Kiefer, F., Lacour, S., Lagrange, A. -M., Meunier, N., Vidal-Madjar, A.
Publikováno v:
Scientific Reports 12, 5855 (2022)
The star $\beta$ Pictoris harbors a young planetary system, which is characterized by the presence of a gaseous and dusty debris disk, at least two massive planets and many minor bodies. For more than thirty years, exocomets transiting the star have
Externí odkaz:
http://arxiv.org/abs/2204.13618
Different relationships between the H$\alpha$ and Ca II chromospheric emissions have been reported in solar-type stars. In particular, the time-series of emissions in these two lines are clearly anti-correlated for a few percent of the stars, contrar
Externí odkaz:
http://arxiv.org/abs/2201.05492
Autor:
Grandjean, A., Lagrange, A. -M., Meunier, N., Rubini, P., Desidera, S., Galland, F., Borgniet, S., Zicher, N., Messina, S., Chauvin, G., Sterzik, M., Pantoja, B.
Publikováno v:
A&A, A39, 650, 2021
The search of close (a<=5 au) giant planet(GP) companions with radial velocity(RV) around young stars and the estimate of their occurrence rates is important to constrain the migration timescales. Furthermore, this search will allow the giant planet
Externí odkaz:
http://arxiv.org/abs/2106.10754