Zobrazeno 1 - 10
of 452
pro vyhledávání: '"Bhowmik T"'
Autor:
Nogueira, P. H., Lazzoni, C., Zurlo, A., Bhowmik, T., Donoso-Oliva, C., Desidera, S., Milli, J., Pérez, S., Delorme, P., Fernadez, A., Langlois, M., Petrus, S., Cabrera-Vives, G., Chauvin, G.
Publikováno v:
A&A 687, A301 (2024)
$\eta$ Tel is an 18 Myr system with a 2.09 M$_{\odot}$ A-type star and an M7-M8 brown dwarf companion, $\eta$ Tel B, separated by 4.2'' (208 au). High-contrast imaging campaigns over 20 years have enabled orbital and photometric characterization. $\e
Externí odkaz:
http://arxiv.org/abs/2405.04723
The high-albedo, low polarization disk around HD 114082 harbouring a Jupiter-sized transiting planet
Autor:
Engler, N., Milli, J., Gratton, R., Ulmer-Moll, S., Vigan, A., Lagrange, A. -M., Kiefer, F., Rubini, P., Grandjean, A., Schmid, H. M., Messina, S., Squicciarini, V., Olofsson, J., Thébault, P., van Holstein, R. G., Janson, M., Ménard, F., Marshall, J. P., Chauvin, G., Lendl, M., Bhowmik, T., Boccaletti, A., Bonnefoy, M., del Burgo, C., Choquet, E., Desidera, S., Feldt, M., Fusco, T., Girard, J., Gisler, D., Hagelberg, J., Langlois, M., Maire, A. -L., Mesa, D., Meyer, M. R., Rabou, P., Rodet, L., Schmidt, T., Zurlo, A.
Publikováno v:
A&A 672, A1 (2023)
We present new optical and near-IR images of debris disk around the F-type star HD 114082. We obtained direct imaging observations and analysed the TESS photometric time series data of this target with a goal to search for planetary companions and to
Externí odkaz:
http://arxiv.org/abs/2211.11767
Autor:
Zurlo, A., Gozdziewski, K., Mesa, C. Lazzoni D., Nogueira, P., Desidera, S., Gratton, R., Marzari, F., Pinna, E., Chauvin, G., Delorme, P., Girard, J. H., Hagelberg, J., Henning, Th., Janson, M., Rickman, E., Kervella, P., Avenhaus, H., Bhowmik, T., Biller, B., Boccaletti, A., Bonaglia, M., Bonavita, M., Bonnefoy, M., Cantalloube, F., Cheetham, A., Claudi, R., D'Orazi, V., Feldt, M., Galicher, R., Ghose, E., Lagrange, A. -M., Langlois, M., Coroller, H. le, Ligi, R., Kasper, M., Maire, A. -L., Medard, F., Meyer, M., Peretti, S., Perrot, C., Puglisi, A. T., Rossi, F., Rothberg, B., Schmidt, T., Sissa, E., Vigan, A., Wahhaj, Z.
Publikováno v:
A&A 666, A133 (2022)
HR\,8799 is a young planetary system composed of 4 planets and a double debris belt. Being the first multi-planetary system discovered with the direct imaging technique, it has been observed extensively since 1998. This wide baseline of astrometric m
Externí odkaz:
http://arxiv.org/abs/2207.10684
Autor:
Bhattacharyya, A., Bhowmik, T. K., Adroja, D. T., Rahaman, B., Kar, S., Das, S., Saha-Dasgupta, T., Biswas, P. K., Sinha, T. P., Ewings, R. A., Khalyavin, D. D., Strydom, A. M.
Publikováno v:
Phys. Rev. B 103, 174423 (2021)
We report the signatures of dynamic spin fluctuations in the layered honeycomb Li$_3$Cu$_2$SbO$_6$ compound, with a 3$d$ S = 1/2 $d^9$ Cu$^{2+}$ configuration, through muon spin rotation and relaxation ($\mu$SR) and neutron scattering studies. Our ze
Externí odkaz:
http://arxiv.org/abs/2104.10859
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
Autor:
Maire, A. -L., Molaverdikhani, K., Desidera, S., Trifonov, T., Mollière, P., D'Orazi, V., Frankel, N., Baudino, J. -L., Messina, S., Müller, A., Charnay, B., Cheetham, A., Delorme, P., Ligi, R., Bonnefoy, M., Brandner, W., Mesa, D., Cantalloube, F., Galicher, R., Henning, T., Biller, B. A., Hagelberg, J., Lagrange, A. -M., Lavie, B., Rickman, E., Ségransan, D., Udry, S., Chauvin, G., Gratton, R., Langlois, M., Vigan, A., Meyer, M. R., Beuzit, J. -L., Bhowmik, T., Boccaletti, A., Lazzoni, C., Perrot, C., Schmidt, T., Zurlo, A., Gluck, L., Pragt, J., Ramos, J., Roelfsema, R., Roux, A., Sauvage, J. -F.
Publikováno v:
A&A 639, A47 (2020)
Context. Detecting and characterizing substellar companions for which the luminosity, mass, and age can be determined independently is of utter importance to test and calibrate the evolutionary models due to uncertainties in their formation mechanism
Externí odkaz:
http://arxiv.org/abs/2005.10312
Autor:
Bhowmik, T., Boccaletti, A., Thébault, P., Kral, Q., Mazoyer, J., Milli, J., Maire, A. L., van Holstein, R. G., Augereau, J. -C., Baudoz, P., Feldt, M., Galicher, R., Henning, T., Lagrange, A. -M., Olofsson, J., Pantin, E., Perrot, C.
Publikováno v:
A&A 630, A85 (2019)
Spectro-photometry of debris disks in total intensity and polarimetry can provide new insight into the properties of the dust grains therein (size distribution and optical properties). We aim to constrain the morphology of the highly inclined debris
Externí odkaz:
http://arxiv.org/abs/1908.08511
Titanium based-perovskites have got surprising attraction due to their environmentfriendly photocatalysts behavior. The Rietveld refinement of X-ray diffraction (XRD) pattern authenticates the orthorhombic Pnma structure of Pr2MgTiO6 (PMT). The Pr3+-
Externí odkaz:
http://arxiv.org/abs/1906.11178
Autor:
Boccaletti, A., Thébault, P., Pawellek, N., Lagrange, A. -M., Galicher, R., Desidera, S., Milli, J., Kral, Q., Bonnefoy, M., Augereau, J. -C., Maire, A. -L., Henning, T., Beust, H., Rodet, L., Avenhaus, H., Bhowmik, T., Bonavita, M., Chauvin, G., Cheetham, A., Cudel, M., Feldt, M., Gratton, R., Hagelberg, J., Janin-Potiron, P., Langlois, M., Ménard, F., Mesa, D., Meyer, M., Peretti, S., Perrot, C., Schmidt, T., Sissa, E., Vigan, A., Rickman, E., Magnard, Y., Maurel, D., Moeller-Nilsson, O., Perret, D., Sauvage, J. -F.
Planetary systems hold the imprint of the formation and of the evolution of planets especially at young ages, and in particular at the stage when the gas has dissipated leaving mostly secondary dust grains. The dynamical perturbation of planets in th
Externí odkaz:
http://arxiv.org/abs/1904.02746
Autor:
Claudi, R., Maire, A. -L., Mesa, D., Cheetham, A., Fontanive, C., Gratton, R., Zurlo, A., Avenhaus, H., Bhowmik, T., Biller, B., Boccaletti, A., Bonavita, M., Bonnefoy, M., Cascone, E., Chauvin, G., Delboulbè, A., Desidera, S., D'Orazi, V., Feautrier, P., Feldt, M., Dotti, F. Flammini, Girard, J. H., Giro, E., Janson, M., Hagelberg, J., Keppler, M., Kopytova, T., Lacour, S., Lagrange, A. -M., Langlois, M., Lannier, J., Coroller, H. Le, Menard, F., Messina, S., Meyer, M., Millward, M., Olofsson, J., Pavlov, A., Peretti, S., Perrot, C., Pinte, C., Pragt, J., Ramos, J., Rochat, S., Rodet, L., Roelfsema, R., Rouan, D., Salter, G., Schmidt, T., Sissa, E., Thebault, P., Udry, S., Vigan, A.
Publikováno v:
A&A 622, A96 (2019)
We detect the accreting low-mass companion HD142527B at a separation of 73 mas (11.4 au) from the star. No other companions with mass greater than 10 MJ are visible in the field of view of IFS (\sim 100 au centered on the star) or in the IRDIS field
Externí odkaz:
http://arxiv.org/abs/1812.07814