Search Results for author: D. Mesa

Found 5 papers, 0 papers with code

Perturbers: SPHERE detection limits to planetary-mass companions in protoplanetary disks

no code implementations9 Mar 2021 R. Asensio-Torres, Th. Henning, F. Cantalloube, P. Pinilla, D. Mesa, A. Garufi, S. Jorquera, R. Gratton, G. Chauvin, J. Szulagyi, R. van Boekel, R. Dong, G. -D. Marleau, M. Benisty, M. Villenave, C. Bergez-Casalou, C. Desgrange, M. Janson, M. Keppler, M. Langlois, F. Menard, E. Rickman, T. Stolker, M. Feldt, T. Fusco, L. Gluck, A. Pavlov, J. Ramos

The detection of a wide range of substructures such as rings, cavities and spirals has become a common outcome of high spatial resolution imaging of protoplanetary disks, both in the near-infrared scattered light and in the thermal millimetre continuum emission.

Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics

A High-Contrast Search for Variability in HR 8799bc with VLT-SPHERE

no code implementations21 Jan 2021 B. A. Biller, D. Apai, M. Bonnefoy, S. Desidera, R. Gratton, M. Kasper, M. Kenworthy, A. M. Lagrange, C. Lazzoni, D. Mesa, A. Vigan, K. Wagner, J. M. Vos, A. Zurlo

To quantify our sensitivity to variability, we simulate variable lightcurves by inserting and retrieving a suite of simulated planets at similar radii from the star as HR 8799bc, but offset in position angle.

Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics

Exoplanet Imaging Data Challenge: benchmarking the various image processing methods for exoplanet detection

no code implementations13 Jan 2021 F. Cantalloube, C. Gomez-Gonzalez, O. Absil, C. Cantero, R. Bacher, M. J. Bonse, M. Bottom, C. -H. Dahlqvist, C. Desgrange, O. Flasseur, T. Fuhrmann, Th. Henning, R. Jensen-Clem, M. Kenworthy, D. Mawet, D. Mesa, T. Meshkat, D. Mouillet, A. Mueller, E. Nasedkin, B. Pairet, S. Pierard, J. -B. Ruffio, M. Samland, J. Stone, M. Van Droogenbroeck

The Exoplanet Imaging Data Challenge is a community-wide effort meant to offer a platform for a fair and common comparison of image processing methods designed for exoplanet direct detection.

Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics

Investigating three Sirius-like systems with SPHERE

no code implementations10 Dec 2020 R. Gratton, V. D'Orazi, T. A. Pacheco, A. Zurlo, S. Desidera, J. Melendez, D. Mesa, R. Claudi, M. Janson, M. Langlois, E. Rickman, M. Samland, T. Moulin, C. Soenke, E. Cascone, J. Ramos, F. Rigal, H. Avenhaus, J. L. Beuzit, B. Biller, A. Boccaletti, M. Bonavita, M. Bonnefoy, W. Brandner, G. Chauvin, M. Cudel, S. Daemgen, P. Delorme, C. Desgrange, N. Engler, M. Feldt, C. Fontanive, R. Galicher, A. Garufi, D. Gasparri, C. Ginski, J. Girard, J. Hagelberg, S. Hunziker, M. Kasper, M. Keppler, A. -M. Lagrange, J. Lannier, C. Lazzoni, H. Le Coroller, R. Ligi, M. Lombart, A. -L. Maire, M. R. Mayer, S. Mazevet, F. Menard, D. Mouillet, C. Perrot, S. Peretti, S. Petrus, A. Potier, D. Rouan, H. M. Schmid, T. O. B. Schmidt, E. Sissa, T. Stolker, G. Salter, A. Vigan, F. Wildi

The composition of the MS stars agrees fairly well with expectations from pollution by the AGB progenitors of the WDs: HD2133A has a small enrichment of n-capture elements, which is as expected for pollution by an AGB star with a mass <1. 5 Mo; CD-56 7708A is a previously unrecognized mild Ba-star, which is expected due to pollution by an AGB star with a mass in the range of 1. 5-3. 0 Mo; and HD114174 has a very moderate excess of n-capture elements, which is in agreement with the expectation for a massive AGB star to have a mass >3. 0 Mo.

Solar and Stellar Astrophysics

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