Browsing by Author "a65eb35b-463f-47d6-a74c-a74bffb45dca"

Now showing items 1-9 of 9

    • Blobs, spiral arms, and a possible planet around HD 169142 
      Gratton, R.; Ligi, R.; Sissa, E.; Desidera, S.; Mesa, D.; Bonnefoy, M.; Chauvin, G.; Cheetham, A.; Feldt, M.; Lagrange, Anne Marie; Langlois, M.; Meyer, M.; Vigan, A.; Boccaletti, A.; Janson, M.; Lazzoni, C.; Zurlo, A.; De Boer, J.; Henning, T.; D'Orazi, V.; Gluck, L.; Madec, F. (EDP Sciences, 2019)
      Context. Young planets are expected to cause cavities, spirals, and kinematic perturbations in protostellar disks that may be used to infer their presence. However, a clear detection of still-forming planets embedded within ...
    • Calibrating the surface brightness – color relation for late-type red giants stars in the visible domain ... 
      Nardetto, N.; Salsi, A.; Mourard, D.; Hocdé, V.; Perraut, K.; Gallenne, A.; Mérand, A.; Graczyk, D.; Pietrzynski, G.; Gieren, W.; Kervella, P.; Ligi, R.; Meilland, A.; Morand, F.; Stee, P.; Tallon-Bosc, I.; Brummelaar, T. ten (EDP Science, 2020)
      Context. The surface brightness - color relationship (SBCR) is a poweful tool for determining the angular diameter of stars from photometry. It was for instance used to derive the distance of eclipsing binaries in the Large ...
    • Discovery of a brown dwarf companion to the star HIP 64892 
      Cheetham, A.; Bonnefoy, M.; Desidera, S.; Langlois, M.; Vigan, A.; Schmidt, T.; Olofsson, J.; Chauvin, G.; Klahr, H.; Gratton, R.; D’Orazi, V.; Henning, Thomas; Janson, M.; Biller, B.; Peretti, S.; Hagelberg, J.; Ségransan, D.; Udry, S.; Mesa, D.; Sissa, E.; Kral, Q.; Schlieder, J.; Maire, A.-L; Mordasini, C.; Menard, F.; Zurlo, A.; Beuzit, Jean-Luc; Feldt, M.; Mouillet, D.; Meyer, M.; Lagrange, Anne Marie; Boccaletti, A.; Keppler, M.; Kopytova, T.; Ligi, R.; Rouan, D.; Le Coroller, H.; Dominik, C.; Lagadec, E.; Turatto, M.; Abe, L.; Antichi, J.; Baruffolo, A.; Baudoz, P.; Blanchard, P.; Buey, T.; Carbillet, M.; Carle, M.; Cascone, E.; Claudi, R.; Costille, A.; Delboulbé, A.; De Caprio, V.; Dohlen, K.; Fantinel, D.; Feautrier, P.; Fusco, T.; Giro, E.; Gluck, L.; Hubin, N.; Hugot, E.; Jaquet, M.; Kasper, M.; Llored, M.; Madec, F.; Magnard, Y.; Martínez, P.; Maurel, D.; Le Mignant, D.; Moller-Nilsson, O.; Moulin, T.; Origné, 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.; Suárez, M.; Weber, L.; Wildi, F. (EDP Sciences, 2018)
      We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT/SPHERE during the SHINE exoplanet survey. The host is a B9.5V member of the Lower-Centaurus-Crux subgroup of the Scorpius ...
    • Investigation of the inner structures around HD169142 with VLT/SPHERE 
      Ligi, R.; Zurlo, A. (Oxford University Press, 2018)
      We present observations of the Herbig Ae star HD 169142 with the VLT/SPHERE instruments InfraRed Dual-band Imager and Spectrograph (IRDIS) (K1K2 and H2H3 bands) and the Integral Field Spectrograph (IFS) (Y, J and H bands). ...
    • Orbital and spectral characterization of the benchmark T-type brown dwarf HD19467B 
      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. C.; 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, Gaël; 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. (EDP Science, 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 ...
    • Resolving the planet-hosting inner regions of the LkCa 15 disk 
      Thalmann, C.; Janson, M.; Garufi, A.; Boccaletti, A.; Quanz, S. P.; Sissa, E.; Gratton, R.; Salter, G.; Benisty, Myriam; Bonnefoy, M.; Chauvin, G.; Daemgen, S.; Desidera, S.; Dominik, C.; Engler, N.; Feldt, M.; Henning, Thomas; Lagrange, Anne Marie; Langlois, M.; Lannier, J.; Le Coroller, H.; Ligi, R.; Menard, F.; Mesa, D.; Meyer, M. R.; Mulders, G. D.; Olofsson, J.; Pinte, Christophe; Schmid, H.-M.; Vigan, A.; Zurlo, A. (2016)
      LkCa 15 hosts a pre-transitional disk as well as at least one accreting protoplanet orbiting in its gap. Previous disk observations have focused mainly on the outer disk, which is cleared inward of similar to 50 au. The ...
    • Searching for the near-infrared counterpart of Proxima c using multi-epoch high-contrast SPHERE data at VLT 
      Gratton, R.; Zurlo, A.; Le Coroller, H.; Damasso, M.; Sordo, F. del; Langlois, M.; Mesa, D.; Milli, J.; Chauvin, Gaël; Desidera, S.; Hagelberg, J.; Lagadec, E.; Vigan, A.; Boccaletti, A.; Bonnefoy, M.; Brandner, W.; Brown, S.; Cantalloube, F.; Delorme, P.; Orazi, V. D.; Feldt, M.; Galicher, R.; Henning, T.; Janson, M.; Kervella, P.; Lagrange, A. M; Lazzoni, C.; Ligi, R.; Ligi, A. L.; Ménard, F.; Meyer, M.; Mugnier, L.; Potier, A.; Rickman, E. L; Rodet, L.; Romero, C.; Schmidt, T.; Sissa, E.; Sozzetti, A.; Szulágyi, J.; Wahhaj, Z.; Antichi, J.; Fusco, T.; Stadler, E.; González Suárez, M.; Wildi, F. (EDP Science, 2020)
      Context. Proxima Centauri is the closest star to the Sun and it is known to host an Earth-like planet in its habitable zone; very recently a second candidate planet was proposed based on radial velocities. At quadrature, ...
    • VEGA/CHARA interferometric observations of Cepheids I. A resolved structure around the prototype classical ... 
      Nardetto, N.; Mérand, A.; Mourard, D.; Storm, J.; Gieren, W.; Fouqué, P.; Graczyk, D.; Kervella, P.; Neilson, H.; Pietrzynski, G.; Pilecki, B.; Breitfelder, J.; Berio, P.; Challouf, M.; Clausse, J.-M.; Ligi, R.; Mathias, P.; Meilland, A.; Perraut, K.; Poretti, E.; Rainer, M.; Spang, A.; Stee, P.; Tallon-Bosc, I.; Brummelaar, T. ten (EDP Sciences, 2016)
      Context. The B-W method is used to determine the distance of Cepheids and consists in combining the angular size variations of the star, as derived from infrared surface-brightness relations or interferometry, with its ...
    • VLT/SPHERE astrometric confirmation and orbital analysis of the brown dwarf companion HR 2562 B 
      Maire, A.-L.; Rodet, L.; Lazzoni, C.; Boccaletti, A.; Brandner, W.; Galicher, R.; Cantalloube, F.; Mesa, D.; Klahr, H.; Beust, H.; Chauvin, G.; Desidera, S.; Janson, M.; Keppler, M.; Olofsson, J.; Augereau, J. -C.; Daemgen, S.; Henning, Thomas; Thebault, P.; Bonnefoy, M.; Feldt, M.; Gratton, R.; Lagrange, Anne Marie; Langlois, M.; Meyer, M. R.; Vigan, A.; D'Orazi, V.; Hagelberg, J.; Coroller, H. Le; Ligi, R.; Rouan, D.; Samland, M.; Schmidt, T.; Udry, S.; Zurlo, A.; Abe, L.; Carle, M.; Delboulbe, A.; Feautrier, P.; Magnard, Y.; Maurel, D.; Moulin, T.; Pavlov, A.; Perret, D.; Petit, C.; Ramos, J. R.; Rigal, F.; Roux, A.; Weber, L. (EDP Sciences, 2018-08-07)
      Context. A low-mass brown dwarf has recently been imaged around HR 2562 (HD 50571), a star hosting a debris disk resolved in the far infrared. Interestingly, the companion location is compatible with an orbit coplanar with ...