Giant planets population around B stars from the first part of the BEAST survey

Autor: Delorme, P., Chomez, A., Squicciarini, V., Janson, M., Flasseur, O., Schib, O., Gratton, R., Lagrange, A-M., Langlois, M., Mayer, L., Helled, R., Reïffert, S, Kiefer, F., Biller, B., Chauvin, G., Fontanive, C., Henning, Th., Kenworthy, M., Marleau, G-D., Mesa, D., Meyer, M. R., Mordasini, C., Ringqvist, S. C., Samland, M., Vigan, A., Viswanath, G.

Exoplanets form from circumstellar protoplanetary discs whose fundamental properties (notably their extent, composition, mass, temperature and lifetime) depend on the host star properties, such as their mass and luminosity. B-stars are among the most

Externí odkaz: http://arxiv.org/abs/2409.18793

Shadows and spirals in the protoplanetary disk HD 100453

Autor: Benisty, M., Stolker, T., Pohl, A., de Boer, J., Lesur, G., Dominik, C., Dullemond, C. P., Langlois, M., Min, M., Wagner, K., Henning, T., Juhasz, A., Pinilla, P., Facchini, S., Apai, D., van Boekel, R., Garufi, A., Ginski, C., Ménard, F., Pinte, C., Quanz, S. P., Zurlo, A., Boccaletti, A., Bonnefoy, M., Beuzit, J. L., Chauvin, G., Cudel, M., Desidera, S., Feldt, M., Fontanive, C., Gratton, R., Kasper, M., Lagrange, A.-M., LeCoroller, H., Mouillet, D., Mesa, D., Sissa, E., Vigan, A., Antichi, J., Buey, T., Fusco, T., Gisler, D., Llored, M., Magnard, Y., Moeller-Nilsson, O., Pragt, J., Roelfsema, R., Sauvage, J.-F., Wildi, F.

Context. Understanding the diversity of planets requires studying the morphology and physical conditions in the protoplanetary disks in which they form. Aims. We aim to study the structure of the similar to 10 Myr old protoplanetary disk HD 100453, t

Externí odkaz: http://hdl.handle.net/10150/622877
http://arizona.openrepository.com/arizona/handle/10150/622877

Results from The COPAINS Pilot Survey: four new brown dwarfs and a high companion detection rate for accelerating stars

Autor: Bonavita, M., Fontanive, C., Gratton, R., Muzic, K., Desidera, S., Biller, B., Scholz, A., Sozzetti, A., Squicciarini, V.

Publikováno v: Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 4, July 2022, Pages 5588-5605

The last decade of direct imaging (DI) searches for sub-stellar companions has uncovered a widely diverse sample that challenges the current formation models, while highlighting the intrinsically low occurrence rate of wide companions, especially at

Externí odkaz: http://arxiv.org/abs/2205.02213

The SPHERE infrared survey for exoplanets (SHINE) -- II. Observations, Data reduction and analysis Detection performances and early-results

Autor: Langlois, M., Gratton, R., Lagrange, A. -M., Delorme, P., Boccaletti, A., Bonnefoy, M., Maire, A. -L., Mesa, D., Chauvin, G., Desidera, S., Vigan, A., Cheetham, A., Hagelberg, J., Feldt, M., Meyer, M., Rubini, P., Coroller, H. Le, Cantalloube, F., Biller, B., Bonavita, M., Bhowmik, T., Brandner, W., Daemgen, S., D'Orazi, V., Flasseur, O., Fontanive, C., Galicher, R., Girard, J., Janin-Potiron, P., Janson, M., Keppler, M., Kopytova, T., Lagadec, E., Lannier, J., Lazzoni, C., Ligi, R., Meunier, N., Perreti, A., Perrot, C., Rodet, L., Romero, C., Rouan, D., Samland, M., Salter, G., Sissa, E., Schmidt, T., Zurlo, A., Mouillet, D., Denis, L., Thiebaut, E., Milli, J., Wahhaj, Z., Beuzit, J. -L., Dominik, C., Henning, Th., Menard, F., Muller, A., Schmid, H. M., Turatto, M., Udry, S., Abe, L., Antichi, J., Allard, F., Baruffolo, A., Baudoz, P., Baudrand, J., Bazzon, A., Blanchard, P., Carbillet, M., Carle, M., Cascone, E., Charton, J., Claudi, R., Costille, A., De Caprio, V., Delboulbe, A., Dohlen, K., Fantinel, D., Feautrier, P., Fusco, T., Gigan, P., Giro, E., Gisler, D., Gluck, L., Gry, C., Hubin, N., Hugot, E., Jaquet, M., Kasper, M., Mignant, D. Le, Llored, M., Madec, F., Magnard, Y., Martinez, P., Maurel, D., Messina, S., Moller-Nilsson, O., Mugnier, L., Moulin, T., Origne, A., Pavlov, A., Perret, D., Petit, C., Pragt, J., Puget, P., Rabou, P., Ramos, J., Rigal, F., Rochat, S., Roelfsema, R., Rousset, G., Roux, A., Salasnich, B., Sauvage, J. F., Sevin, A., Soenke, C., Stadler, E., Suarez, M., Weber, L., Wildi, F., Rickman, E.

Publikováno v: A&A 651, A71 (2021)

Over the past decades, direct imaging has confirmed the existence of substellar companions (exoplanets or brown dwarfs) on wide orbits (>10 au) from their host stars. To understand their formation and evolution mechanisms, we have initiated in 2015 t

Externí odkaz: http://arxiv.org/abs/2103.03976

Investigating three Sirius-like systems with SPHERE

Autor: Gratton, R., D'Orazi, V., Pacheco, T. A., Zurlo, A., Desidera, S., Melendez, J., Mesa, D., Claudi, R., Janson, M., Langlois, M., Rickman, E., Samland, M., Moulin, T., Soenke, C., Cascone, E., Ramos, J., Rigal, F., Avenhaus, H., Beuzit, J. L., Biller, B., Boccaletti, A., Bonavita, M., Bonnefoy, M., Brandner, W., Chauvin, G., Cudel, M., Daemgen, S., Delorme, P., Desgrange, C., Engler, N., Feldt, M., Fontanive, C., Galicher, R., Garufi, A., Gasparri, D., Ginski, C., Girard, J., Hagelberg, J., Hunziker, S., Kasper, M., Keppler, M., Lagrange, A. -M., Lannier, J., Lazzoni, C., Coroller, H. Le, Ligi, R., Lombart, M., Maire, A. -L., Mayer, M. R., Mazevet, S., Menard, F., Mouillet, D., Perrot, C., Peretti, S., Petrus, S., Potier, A., Rouan, D., Schmid, H. M., Schmidt, T. O. B., Sissa, E., Stolker, T., Salter, G., Vigan, A., Wildi, F.

Publikováno v: A&A 646, A61 (2021)

Sirius-like systems are wide binaries composed of a white dwarf (WD) and a companion of a spectral type earlier than M0. The WD progenitor evolves in isolation, but its wind during the AGB phase pollutes the companion surface and transfers some angul

Externí odkaz: http://arxiv.org/abs/2012.05575