Authors: Lagrange, A. -M., Marleau, G. -D., Mollière, P., Orazi, V. D, Baudino, J. -L., Bartucci, A. Musso, Elwain, M. Mc, Beuzit, Delboulbe, A., Bonnefoy, M., Perraut, K., Delorme, Vigan, Arthur, Line, Rodet, L., Ginski, C., Mourard, D., Samland, Tremblin, Ligi, R., Cantalloube, F., Molliere, Charnay, B., Kuzuhara, Janson, Morley, Homeier, D. D., D’Orazi, V., Klahr, H., Mordasini, Lavie, Beust, Peretti, S., Musso Bartucci, Mesa, Bézard, Boccaletti, Galicher, Hagelberg, J., Desidera, Biller, Maire, A. -L., Allard, Borgniet, Lannier, Meunier, N., Desort, Alecian, E., Chauvin, G., Langlois, Henning, T., Mugnier, Mouillet, Gratton, Brandt, Mc Elwain, Tamura, Hori, Y., Brandner, W., Buenzli, Cheetham, Cudel, Feldt, Kasper, Keppler, Kopytova, Meyer, Perrot, Rouan, Salter, Schmidt, Sissa, Zurlo, Wildi, Blanchard, De Caprio, Delboulbé, Maurel, Moulin, Pavlov, Rabou, Ramos, Roelfsema, Rousset, Stadler, Rigal, Weber
Venue: Astronomy & Astrophysics
Type: Publication
Abstract: The G-type star GJ504A is known to host a 3 to 35 MJup companion whose temperature, mass, and projected separation all contribute to make it a test case for the planet formation theories and for atmospheric models of giant planets and light brown dwarfs. We collected data from the CHARA interferometer, SOPHIE spectrograph, and VLT/SPHERE high contrast imager to revisit the properties of the system. We measure a radius of 1.35+/- 0.04Rsun for GJ504A which yields isochronal ages of 21+/-2Myr or 4.0+/-1.8Gyr for the system and line-of-sight stella...
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Topics: 
Astrophysics
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