Zobrazeno 1 - 10
of 564
pro vyhledávání: '"Pedretti E"'
Autor:
Perrin, G., Ridgway, S. T., Lacour, S., Haubois, X., Thiebaut, E., Berger, J. P., Lacasse, M. G., Millan-Gabet, R., Monnier, J. D., Pedretti, E., Ragland, S., Traub, W.
Publikováno v:
A&A 642, A82 (2020)
We report Multi-telescope interferometric measurements taken with the Interferometric Optical Telescope Array (IOTA) to provide imagery of the LPV Mira in the H-band. This wavelength region is well suited to studying mass loss given the low continuum
Externí odkaz:
http://arxiv.org/abs/2008.09801
Autor:
Defrère, D., Ireland, M., Absil, O., Berger, J. -P., Danchi, W. C., Ertel, S., Gallenne, A., Hénault, F., Hinz, P., Huby, E., Kraus, S., Labadie, L., Bouquin, J. -B. Le, Martin, G., Matter, A., Mennesson, B., Mérand, A., Minardi, S., Monnier, J. D., Norris, B., de Xivry, G. Orban, Pedretti, E., Pott, J. -U., Reggiani, M., Serabyn, E., Surdej, J., Tristram, K. R. W., Woillez, J.
Hi-5 is a high-contrast (or high dynamic range) infrared imager project for the VLTI. Its main goal is to characterize young extra-solar planetary systems and exozodiacal dust around southern main-sequence stars. In this paper, we present an update o
Externí odkaz:
http://arxiv.org/abs/1807.07467
Autor:
Defrère, D., Absil, O., Berger, J. -P., Boulet, T., Danchi, W. C., Ertel, S., Gallenne, A., Hénault, F., Hinz, P., Huby, E., Ireland, M., Kraus, S., Labadie, L., Bouquin, J. -B. Le, Martin, G., Matter, A., Mérand, A., Mennesson, B., Minardi, S., Monnier, J., Norris, B., de Xivry, G. Orban, Pedretti, E., Pott, J. -U., Reggiani, M., Serabyn, E., Surdej, J., Tristram, K. R. W., Woillez, J.
The development of high-contrast capabilities has long been recognized as one of the top priorities for the VLTI. As of today, the VLTI routinely achieves contrasts of a few 10$^{-3}$ in the near-infrared with PIONIER (H band) and GRAVITY (K band). N
Externí odkaz:
http://arxiv.org/abs/1801.04148
Autor:
Parks, J. R., White, R. J., Baron, F., Monnier, J. D., Kloppenborg, B., Henry, G., Scheafer, G., Che, X., Pedretti, E., Thureau, N., Zhao, M., Brummelaar, T. ten, McAlister, H., Ridgway, S. T., Turner, N., Sturmann, J., Sturmann, L.
Presented are the first interferometric images of cool starspots on the chromospherically active giant $\lambda$ Andromedae. These images represent the first model-independent images of cool starspots on a star other than the Sun to date. The interfe
Externí odkaz:
http://arxiv.org/abs/1508.04755
Autor:
Mourard, D., Monnier, J. D., Meilland, A., Gies, D., Millour, F., Benisty, M., Che, X., Grundstrom, E. D., Ligi, R., Schaefer, G., Baron, F., Kraus, S., Zhao, M., Pedretti, E., Berio, P., Clausse, J. M., Nardetto, N., Perraut, K., Spang, A., Stee, P., Tallon-Bosc, I., McAlister, H., Brummelaar, T. ten, Ridgway, S. T., Sturmann, J., Sturmann, L., Turner, N., Farrington, C.
The rapidly rotating Be star phi Persei was spun up by mass and angular momentum transfer from a now stripped-down, hot subdwarf companion. Here we present the first high angular resolution images of phi Persei made possible by new capabilities in lo
Externí odkaz:
http://arxiv.org/abs/1503.03423
Autor:
Baron, F., Monnier, J. D., Kiss, L. L., Neilson, H. R., Zhao, M., Anderson, M., Aarnio, A., Pedretti, E., Thureau, N., Brummelaar, T. A. ten, Ridgway, S. T., McAlister, H. A., Sturmann, J., Sturmann, L., Turner, N.
Publikováno v:
ApJ 785 46, 2014
Two red supergiants of the Per OB1 association, RS Per and T Per, have been observed in H band using the MIRC instrument at the CHARA array. The data show clear evidence of departure from circular symmetry. We present here new techniques specially de
Externí odkaz:
http://arxiv.org/abs/1405.4032
Autor:
Gallenne, A., Monnier, J. D., Mérand, A., Kervella, P., Kraus, S., Schaefer, G. H., Gieren, W., Pietrzynski, G., Szabados, L., Che, X., Baron, F., Pedretti, E., McAlister, H., Brummelaar, T. ten, Sturmann, J., Sturmann, L., Turner, N., Farrington, C., Vargas, N.
Publikováno v:
A&A, 552, A21 (2013)
We aim at determining the masses of Cepheids in binary systems, as well as their geometric distances and the flux contribution of the companions. The combination of interferometry with spectroscopy will offer a unique and independent estimate of the
Externí odkaz:
http://arxiv.org/abs/1302.1817
Autor:
Monnier, J. D., Che, Xiao, Zhao, Ming, Ekstrom, S., Maestro, V., Aufdenberg, J., Baron, F., Georgy, C., Kraus, S., McAlister, H., Pedretti, E., Ridgway, S., Sturmann, J., Sturmann, L., Brummelaar, T. ten, Thureau, N., Turner, N., Tuthill, P. G.
Optical and infrared interferometers definitively established that the photometric standard Vega (alpha Lyrae) is a rapidly rotating star viewed nearly pole-on. Recent independent spectroscopic analyses could not reconcile the inferred inclination an
Externí odkaz:
http://arxiv.org/abs/1211.6055
Autor:
Baron, F., Monnier, J. D., Pedretti, E., Zhao, M., Schaefer, G., Parks, R., Che, X., Thureau, N., Brummelaar, T. A. ten, McAlister, H. A., Ridgway, S. T., Farrington, C., Sturmann, J., Sturmann, L., Turner, N.
Algol (Beta Per) is an extensively studied hierarchical triple system whose inner pair is a prototype semi-detached binary with mass transfer occurring from the sub-giant secondary to the main-sequence primary. We present here the results of our Algo
Externí odkaz:
http://arxiv.org/abs/1205.0754
Autor:
Monnier, J. D., Zhao, Ming, Pedretti, E., Millan-Gabet, R., Berger, J. P., Traub, W., Schloerb, F. P., Brummelaar, T. ten, McAlister, H., Ridgway, S., Sturmann, L., Sturmann, J., Turner, N., Baron, F., Kraus, S., Tannirkulam, A., Williams, P. M.
Publikováno v:
The Astrophysical Journal Letters, Volume 742, Issue 1, article id. L1 (2011)
Wolf-Rayet stars represent one of the final stages of massive stellar evolution. Relatively little is known about this short-lived phase and we currently lack reliable mass, distance, and binarity determinations for a representative sample. Here we r
Externí odkaz:
http://arxiv.org/abs/1111.1266