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266 results on '"Aristidi, E."'

1. Speckle observations of the binary asteroid (22) Kalliope with C2PU/PISCO

Author

Aristidi, E., Carry, B., Minker, K., Prieur, J. -L., Scardia, M., Rivet, J. -P., Bendjoya, P., Abe, L., Argyle, R. -W., Koechlin, L., Ling, J. F., Maccarini, L., Pansecchi, L., Piccotti, L., Serot, J., and Vernet, D.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present new speckle measurements of the position of Linus, the satellite of the asteroid (22) Kalliope, obtained at the 1m C2PU-Epsilon telescope on the Plateau de Calern, France. Observations were made in the visible domain with the speckle camera PISCO. We obtained 122 measurements in February-March 2022 and April 2023, with a mean uncertainty close to 10 milli-arcseconds on the angular separation.

Published
2023
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2. Dome C coherence time statistics from DIMM data

Author

Aristidi, E., Agabi, A., Abe, L., Fossat, E., Ziad, A., and Mékarnia, D.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present a reanalysis of several years of DIMM data at the site of Dome C, Antarctica, to provide measurements of the coherence time $\tau_0$. Statistics and seasonal behaviour of $\tau_0$ are given at two heights above the ground, 3m and 8m, for the wavelength $\lambda=500$nm. We found an annual median value of $2.9$ms at the height of 8m. A few measurements could also be obtained at the height of 20m and give a median value of 6ms during the period June--September. For the first time, we provide measurements of $\tau_0$ in daytime during the summer, which appears to show the same time dependence as the seeing with a sharp maximum at 5pm local time. Exceptional values of $\tau_0$ above 10ms are met at this particular moment. The continuous slow variations of turbulence conditions during the day offers a natural test bed for a solar adaptive optics system.

Published
2020
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4. A generalized differential image motion monitor

Author

Aristidi, E., Ziad, A., Chabe, J., Fantei-Caujolle, Y., Renaud, C., and Giordano, C.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present the Generalised Differential Image Motion Monitor. It is a compact instrument dedicated to measure 4 parameters of the optical turbulence: seeing, isoplanatic angle, coherence time and wavefront coherence outer scale. GDIMM is based on a small telescope (28cm diameter) equipped with a 3-holes mask at its entrance pupil. The instrument is fully automatic, and performs continuous monitoring of turbulence parameters at the Calern Observatory (France). This paper gives a description of the instrument, data processing and error budget. We present also statistics of 3.5 years of monitoring of turbulence parameters above the Calern Observatory.

Published
2019
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5. Site testing study based on weather balloons measurements

Author

Aristidi, E., Agabi, A., Azouit, M., Fossat, E., Vernin, J., Sadibekova, T., Travouillon, T., Lawrence, J. S., Halter, B., Roth, W. L., and Walden, V. P.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Atmospheric and Oceanic Physics
Abstract

We present wind and temperature profiles at Dome C measured by balloon born sonds during the polar summer. Data from 197 flights have been processed for 4 campaigns between 2000 and 2004. We show the exceptionnal wind conditions at Dome C, Average ground wind speed is 3.6 m/s. We noticed in mid-november the presence of high altitude strong winds (40 m/s) probably due to the polar vortex which disappear in summer. These winds seem to have no effect on seeing measurements made with a DIMM at the same period. Temperature profiles exhibit a minimum at height 5500 m (over the snow surface) that defines the tropopause. Surface layer temperature profile has negative gradient in the first 50 m above ground in the afternoon and a strong inversion layer (5{\deg}C over 50 m) around midnight. Wind profiles are compared with other astronomical sites, and with a meteorological model from Meteo France.

Published
2018
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6. Six winters of photometry from Dome C, Antarctica: challenges, improvements, and results from the ASTEP experiment

Author

Crouzet, N., Mékarnia, D., Guillot, T., Abe, L., Agabi, A., Rivet, J. -P., Gonçalves, I., Schmider, F. -X., Daban, J. -B., Fanteï-Caujolle, Y., Gouvret, C., Bayliss, D. D. R., Zhou, G., Aristidi, E., Fruth, T., Erikson, A., Rauer, H., Szulágyi, J., Bondoux, E., Challita, Z., Pouzenc, C., Fressin, F., Valbousquet, F., Barbieri, M., Blazit, A., Bonhomme, S., Bouchy, F., Gerakis, J., and Bouchez, G.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

ASTEP (Antarctica Search for Transiting ExoPlanets) is a pilot project that aims at searching and characterizing transiting exoplanets from Dome C in Antarctica and to qualify this site for photometry in the visible. Two instruments were installed at Dome C and ran for six winters in total. The analysis of the collected data is nearly complete. We present the operation of the instruments, and the technical challenges, limitations, and possible solutions in light of the data quality. The instruments performed continuous observations during the winters. Human interventions are required mainly for regular inspection and ice dust removal. A defrosting system is efficient at preventing and removing ice on the mirrors. The PSF FWHM is 4.5 arcsec on average which is 2.5 times larger than the specification, and is highly variable; the causes are the poor ground-level seeing, the turbulent plumes generated by the heating system, and to a lower extent the imperfect optical alignment and focusing, and some astigmatism. We propose solutions for each of these aspects that would largely increase the PSF stability. The astrometric and guiding precisions are satisfactory and would deserve only minor improvements. Major issues are encountered with the camera shutter which did not close properly after two winters; we minimized this issue by heating the shutter and by developing specific image calibration algorithms. Finally, we summarize the site testing and science results obtained with ASTEP. Overall, the ASTEP experiment will serve as a basis to design and operate future optical and near-infrared telescopes in Antarctica., Comment: 10 pages, 6 figures, SPIE conference proceedings, Ground-based and Airborne Instrumentation for Astronomy VI, 2016

Published
2016
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7. Dome C site testing: surface layer, free atmosphere seeing and isoplanatic angle statistics

Author

Aristidi, E., Fossat, E., Agabi, A., Mekarnia, D., Jeanneaux, F., Bondoux, E., Challita, Z., Ziad, A., Vernin, J., and Trinquet, H.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

This paper analyses 3.5 years of site testing data obtained at Dome C, Antarctica, based on measurements obtained with three DIMMs located at three different elevations. Basic statistics of the seeing and the isoplanatic angle are given, as well as the characteristic time of temporal fluctuations of these two parameters, which we found to around 30 minutes at 8 m. The 3 DIMMs are exploited as a profiler of the surface layer, and provide a robust estimation of its statistical properties. It appears to have a very sharp upper limit (less than 1 m). The fraction of time spent by each telescope above the top of the surface layer permits us to deduce a median height of between 23 m and 27 m. The comparison of the different data sets led us to infer the statistical properties of the free atmosphere seeing, with a median value of 0.36 arcsec. The C_n^2 profile inside the surface layer is also deduced from the seeing data obtained during the fraction of time spent by the 3 telescopes inside this turbulence. Statistically, the surface layer, except during the 3-month summer season, contributes to 95 percent of the total turbulence from the surface level, thus confirming the exceptional quality of the site above it.

Published
2009
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9. Direct constraint on the distance of y2 Velorum from AMBER/VLTI observations

Author

Millour, F., Petrov, R. G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., Tallon-Bosc, I., Tallon, M., Thiébaut, E., Vakili, F., Malbet, F., Mourard, D., Zins, G., Roussel, A., Robbe-Dubois, S., Puget, P., Perraut, K., Lisi, F., Coarer, E. Le, Lagarde, S., Kern, P., Glück, L., Duvert, G., Chelli, A., Bresson, Y., Beckmann, U., Antonelli, P., Weigelt, G., Ventura, N., Vannier, M., Valtier, J. -C., Testi, L., Tatulli, E., Tasso, D., Stefanini, P., Stee, P., Solscheid, W., Schertl, D., Salinari, P., Sacchettini, M., Richichi, A., Reynaud, F., Rebattu, S., Rabbia, Y., Preibisch, T., Perrier, C., Pacini, F., Ohnaka, K., Nussbaum, E., Mouillet, D., Monin, J. -L., Mège, P., Mathias, P., Martinot-Lagarde, G., Mars, G., Marconi, A., Magnard, Y., Lopez, B., Contel, D. Le, Contel, J. -M. Le, Kraus, S., Kamm, D., Hofmann, K. -H., Utrera, O. Hernandez, Heininger, M., Heiden, M., Gil, C., Giani, E., Glentzlin, A., Gennari, S., Gallardo, A., Fraix-Burnet, D., Foy, R., Fossat, E., Forveille, T., Ferruzzi, D., Feautrier, P., Dugué, M., Driebe, T., De Souza, A. Domiciano, Delboulbé, A., Connot, C., Colin, J., Clausse, J. -M., Cassaing, F., Busoni, S., Bonhomme, S., Blöcker, T., Behrend, J., Baffa, C., Aristidi, E., Arezki, B., Agabi, K., Acke, B., Accardo, M., Kiekebusch, M., Rantakyrö, F., and Schoeller, Markus

Subjects
Astrophysics
Abstract

In this work, we present the first AMBER observations, of the Wolf-Rayet and O (WR+O) star binary system y2 Velorum. The AMBER instrument was used with the telescopes UT2, UT3, and UT4 on baselines ranging from 46m to 85m. It delivered spectrally dispersed visibilities, as well as differential and closure phases, with a resolution R = 1500 in the spectral band 1.95-2.17 micron. We interpret these data in the context of a binary system with unresolved components, neglecting in a first approximation the wind-wind collision zone flux contribution. We show that the AMBER observables result primarily from the contribution of the individual components of the WR+O binary system. We discuss several interpretations of the residuals, and speculate on the detection of an additional continuum component, originating from the free-free emission associated with the wind-wind collision zone (WWCZ), and contributing at most to the observed K-band flux at the 5% level. The expected absolute separation and position angle at the time of observations were 5.1±0.9mas and 66±15° respectively. However, we infer a separation of 3.62+0.11-0.30 mas and a position angle of 73+9-11°. Our analysis thus implies that the binary system lies at a distance of 368+38-13 pc, in agreement with recent spectrophotometric estimates, but significantly larger than the Hipparcos value of 258+41-31 pc.

Published
2006
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10. Measurements of visual double stars with PISCO2 at the Nice 76‐cm refractor in 2013–2014 (new data) and in 2015

Author

Prieur, J.‐L., primary, Gili, R., additional, Rivet, J.‐P., additional, Vakili, F., additional, Scardia, M., additional, Pansecchi, L., additional, Argyle, R. W., additional, Ling, J. F., additional, Piccotti, L., additional, Aristidi, E., additional, Koechlin, L., additional, Bonneau, D., additional, Maccarini, L., additional, and Serot, J., additional

Published
2023
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12. Speckle observations of the binary asteroid (22) Kalliope with C2PU/PISCO

Author

Aristidi, E, primary, Carry, B, additional, Minker, K, additional, Prieur, J-L, additional, Scardia, M, additional, Rivet, J-P, additional, Bendjoya, P, additional, Abe, L, additional, Argyle, R-W, additional, Koechlin, L, additional, Ling, J F, additional, Maccarini, L, additional, Pansecchi, L, additional, Piccotti, L, additional, Sérot, J, additional, and Vernet, D, additional

Published
2023
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14. ANAtOLIA : a mobile station for site availability characterization for optical communications links

Author

Ziad, A., primary, Giordano, C., additional, Aresta, A., additional, Aristidi, E., additional, Bailet, C., additional, Berto, F., additional, Bertolin, C., additional, Carbillet, M., additional, Cavazzani, S., additional, Ceus, D., additional, Charbonnel, T., additional, Delanoe, J., additional, Descloitres, J., additional, Fantei-Caujolle, Y., additional, Gillioen, A., additional, Gonzalez-Ramos, Y., additional, Irbah, A., additional, Jacqmart, E., additional, Le Kernec, A., additional, Liandrat, O., additional, Poulenard, S., additional, Riedi, J., additional, Schmutz, N., additional, Vedani, D., additional, and Victori, S., additional

Published
2023
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15. Orbital elements of double stars: A 1913 AB, COU 1394, COU 382

Author

Ling, Josefina, Scardia, M., Prieur, Jean-Louis, Pansecchi, L., Argyle, R., Aristidi, E., Zanutta, A., Abbe, Louis, Bendjoya, Philippe, Rivet, Jean-Pierre, Vernet, David, Maccarini, Luca, Universidade de Santiago de Compostela [Spain] (USC ), INAF - Osservatorio Astronomico di Brera (OAB), Istituto Nazionale di Astrofisica (INAF), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Observatoire de la Côte d'Azur, and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)

Subjects
[PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Abstract

INTERNATIONAL ASTRONOMICAL UNION COMMISSION G1 (BINARY AND MULTIPLE STAR SYSTEMS) DOUBLE STARS INFORMATION CIRCULAR No. 207 (JUNE 2022); International audience

Published
2023

16. Orbital elements of double stars: STF77AB, STF1338AB

Author

Scardia, M., Prieur, Jean-Louis, Ling, Josefina, Pansecchi, L., Argyle, R., Aristidi, E., Zanutta, A., Abbe, L., Bendjoya, Philippe, Rivet, Jean-Pierre, Vernet, David, Maccarini, Luca, INAF - Osservatorio Astronomico di Brera (OAB), Istituto Nazionale di Astrofisica (INAF), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Universidade de Santiago de Compostela [Spain] (USC ), Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), and Università degli Studi di Milano = University of Milan (UNIMI)

Subjects
[PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Abstract

INTERNATIONAL ASTRONOMICAL UNION COMMISSION G1 (BINARY AND MULTIPLE STAR SYSTEMS) DOUBLE STARS INFORMATION CIRCULAR No. 207 (JUNE 2022); International audience

Published
2023

17. Orbital elements of double stars: BU 1082, STT 260, A 632

Author

Scardia, M., Prieur, Jean-Louis, Ling, Josefina, Pansecchi, L., Argyle, R., Aristidi, E., Zanutta, A., Abbe, L., Bendjoya, Philippe, Rivet, Jean-Pierre, Vernet, David, Maccarini, Luca, INAF - Osservatorio Astronomico di Brera (OAB), Istituto Nazionale di Astrofisica (INAF), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Universidade de Santiago de Compostela [Spain] (USC ), Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)

Subjects
[PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Abstract

INTERNATIONAL ASTRONOMICAL UNION COMMISSION G1 (BINARY AND MULTIPLE STAR SYSTEMS) DOUBLE STARS INFORMATION CIRCULAR No. 207 (JUNE 2022); International audience

Published
2022

18. M-type (22) Kalliope: A tiny Mercury

Author

Ferrais, M., primary, Jorda, L., additional, Vernazza, P., additional, Carry, B., additional, Brož, M., additional, Rambaux, N., additional, Hanuš, J., additional, Dudziński, G., additional, Bartczak, P., additional, Vachier, F., additional, Aristidi, E., additional, Beck, P., additional, Marchis, F., additional, Marsset, M., additional, Viikinkoski, M., additional, Fetick, R., additional, Drouard, A., additional, Fusco, T., additional, Birlan, M., additional, Podlewska-Gaca, E., additional, Burbine, T. H., additional, Dyar, M. D., additional, Bendjoya, P., additional, Benkhaldoun, Z., additional, Berthier, J., additional, Castillo-Rogez, J., additional, Cipriani, F., additional, Colas, F., additional, Dumas, C., additional, Ďurech, J., additional, Fauvaud, S., additional, Grice, J., additional, Jehin, E., additional, Kaasalainen, M., additional, Kryszczynska, A., additional, Lamy, P., additional, Le Coroller, H., additional, Marciniak, A., additional, Michalowski, T., additional, Michel, P., additional, Prieur, J.-L., additional, Reddy, V., additional, Rivet, J.-P., additional, Santana-Ros, T., additional, Scardia, M., additional, Tanga, P., additional, Vigan, A., additional, Witasse, O., additional, and Yang, B., additional

Published
2022
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19. ANAtOLIA: a mobile station for site availability characterization for optical communications links

Author

Minoglou, Kyriaki, Karafolas, Nikos, Cugny, Bruno, Ziad, Aziz, Giordano, Christophe, Aresta, Alessandro, Aristidi, E., Bailet, Christophe, Berto, Filippo, Bertolin, Chiara, Carbillet, Marcel, Cavazzani, Stefano, Ceus, Damien, Charbonnel, Thibaud, Delanoe, J., Descloitres, Jacques, Fantei-Caujolle, Y., Gillioen, A., Gonzalez-Ramos, Yenny, Irbah, Abdanour, Jacqmart, Estelle, Le Kernec, Arnaud, Liandrat, Olivier, Poulenard, Sylvain, Riedi, J., Schmutz, Nicolas, Vedani, D., and Victori, Stephane

Published
2023
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24. Optical turbulence prediction using WRF Model

Author

Rafalimanana, A., Giordano, C., Ziad, A., Aristidi, E., Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics::Fluid Dynamics, astronomical observations, Atmospheric turbulence, flexible scheduling, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Physics::Atmospheric and Oceanic Physics, turbulence prediction
Abstract

International audience; The optical turbulence forecasting has become a necessary information for an optimal programmation of the astronomical observations, called "flexible scheduling". We propose the prediction of the optical turbulence by means of the Weather Research and Forecasting (WRF) model combined with an optical turbulence model. We performed a set of simulations to obtain a 24-hours period forecast for optical turbulence parameters above the Calern observatory. We present the results of our forecasting and comparisons with the CATS (Calern Atmospheric Turbulence Station) measurements.

Published
2019

25. ANAtOLIA: a new mobile site-testing station for astronomy and optical communications

Author

Schreiber, Laura, Schmidt, Dirk, Vernet, Elise, Ziad, A., Giordano, C., Aresta, A., Aristidi, E., Bailet, C., Berto, F., Bertolin, C., Carbillet, M., Cavazzani, S., Ceus, D., Charbonnel, T., Delanoë, J., Descloitres, J., Fanteï-Caujolle, Yan, Gillioën, A., Gonzalez-Ramos, Y., Irbah, A., Jacqmart, E., Le Kernec, A., Liandrat, O., Poulenard, S., Riédi, J., Schmutz, N., and Victori, S.

Published
2022
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31. ANAtOLIA: a mobile station for site availability characterization for optical communications links.

Author

Ziad, Aziz, Giordano, Christophe, Aresta, Alessandro, Aristidi, E., Bailet, Christophe, Berto, Filippo, Bertolin, Chiara, Carbillet, Marcel, Cavazzani, Stefano, Ceus, Damien, Charbonnel, Thibaud, Delanoe, J., Descloitres, Jacques, Fantei-Caujolle, Y., Gillioen, A., Gonzalez-Ramos, Yenny, Irbah, Abdanour, Jacqmart, Estelle, Le Kernec, Arnaud, and Liandrat, Olivier

Published
2024
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34. generalized differential image motion monitor.

Author

Aristidi, E, Ziad, A, Chabé, J, Fantéi-Caujolle, Y, Renaud, C, and Giordano, C

Subjects
MOTION, TURBULENCE, INFORMATION storage & retrieval systems, MEASURING instruments, BUDGET process
Abstract

We present a generalized differential image motion monitor (GDIMM). It is a compact instrument dedicated to the measurement of four parameters of optical turbulence: seeing, isoplanatic angle, coherence time and wavefront coherence outer scale. The GDIMM is based on a small telescope (28 cm diameter) equipped with a three-hole mask at its entrance pupil. The instrument is fully automatic, and performs continuous monitoring of turbulence parameters at the Calern Observatory (France). This paper gives a description of the instrument, data processing and error budget. We also present statistics of three and a half years of monitoring of turbulence parameters above the Calern Observatory. [ABSTRACT FROM AUTHOR]

Published
2019
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35. How to capitalize the unique Antarctica site performance for astronomy

Author

Gil Moretto, Lyu Abe, Aristidi, E., Marcel Carbillet, Nicolas Epchtein, Farrokh Vakili, Aziz Ziad, M. Langlois, Isabelle Vauglin, Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Aristidi, Eric, Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, and Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

36. Speckle observations with PISCO in Merate (Italy): XIV. Astrometric measurements of visual binaries in 2013, and new orbits for ADS 1097, 5871, 7203, 7775, 9378, 9578 and 11186

Author

Scardia, M., Prieur, Jean-Louis, Pansecchi, L., Argyle, R.W., Zanutta, A., Aristidi, E., INAF - Osservatorio Astronomico di Brera (OAB), Istituto Nazionale di Astrofisica (INAF), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (... - 2019) (UNS), and Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ADS 9378, ADS 7203, ADS 7775, ADS 5871, Stars: binaries: close -binaries: visual -astrometry -techniques: interferometric -stars: individual (ADS 1097, ADS 9578 and ADS 11186), [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Abstract

International audience; We present relative astrometric measurements of visual binaries, made in 2013 with the speckle camera PISCO at the 102-cm Zeiss telescope of Brera Astronomical Observatory, in Merate. Our observing list contains orbital couples as well as binaries whose motion is still uncertain. We obtained 134 new measurements of 129 visual binary stars, with angular separations in the range 0 ′′ .23-5 ′′ , and an average accuracy of 0 ′′ .01. The mean error on the position angles is 0 • .5. Most of the position angles were determined without the usual 180 • ambiguity with the application of triple-correlation techniques and/or by inspection of the long integration files. We also present new revised orbits for ADS 1097, 5871, 7203, 7775, 9378, 9578 and 11186, partly derived from PISCO observations. The corresponding estimated values for the masses of those systems are compatible with the spectral types.

Published
2014
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37. The current status of PISCO at Calern

Author

Rivet, Jean-Pierre, Vernet, David, Scardia, Marco, Prieur, Jean-Louis, Bendjoya, P, Suarez, Olga, Abe, Lyu, Pansecchi, Luigi, Argyle, R. W., Aristidi, E., Koechlin, Laurent, Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Brera (OAB), Istituto Nazionale di Astrofisica (INAF), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Astronomy Survey Unit [Cambridge], Institute of Astronomy [Cambridge], University of Cambridge [UK] (CAM)-University of Cambridge [UK] (CAM), Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées (LATT), Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP)

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

40. Six winters of photometry from Dome C, Antarctica: challenges, improvements, and results from the ASTEP experiment

Author

Crouzet, N., additional, Mékarnia, D., additional, Guillot, T., additional, Abe, L., additional, Agabi, A., additional, Rivet, J.-P., additional, Gonçalves, I., additional, Schmider, F.-X., additional, Daban, J.-B., additional, Fanteï-Caujolle, Y., additional, Gouvret, C., additional, Bayliss, D. D. R., additional, Zhou, G., additional, Aristidi, E., additional, Fruth, T., additional, Erikson, A., additional, Rauer, H., additional, Szulágyi, J., additional, Bondoux, E., additional, Challita, Z., additional, Pouzenc, C., additional, Fressin, F., additional, Valbousquet, F., additional, Barbieri, M., additional, Blazit, A., additional, Bonhomme, S., additional, Bouchy, F., additional, Gerakis, J., additional, and Bouchez, G., additional

Published
2016
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41. Transiting planet candidates with ASTEP 400 at Dome C, Antarctica

Author

Mékarnia, D., primary, Guillot, T., additional, Rivet, J.-P., additional, Schmider, F.-X., additional, Abe, L., additional, Gonçalves, I., additional, Agabi, A., additional, Crouzet, N., additional, Fruth, T., additional, Barbieri, M., additional, Bayliss, D. D. R., additional, Zhou, G., additional, Aristidi, E., additional, Szulagyi, J., additional, Daban, J.-B., additional, Fanteï-Caujolle, Y., additional, Gouvret, C., additional, Erikson, A., additional, Rauer, H., additional, Bouchy, F., additional, Gerakis, J., additional, and Bouchez, G., additional

Published
2016
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44. Monitoring the optical turbulence in the surface layer at Dome C, Antarctica, with sonic anemometers

Author

Aristidi, E., primary, Vernin, J., additional, Fossat, E., additional, Schmider, F.-X., additional, Travouillon, T., additional, Pouzenc, C., additional, Traullé, O., additional, Genthon, C., additional, Agabi, A., additional, Bondoux, E., additional, Challita, Z., additional, Mékarnia, D., additional, Jeanneaux, F., additional, and Bouchez, G., additional

Published
2015
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45. Thermalizing a telescope in Antarctica - analysis of ASTEP observations

Author

Guillot, T., primary, Abe, L., additional, Agabi, A., additional, Rivet, J.-P., additional, Daban, J.-B., additional, Mékarnia, D., additional, Aristidi, E., additional, Schmider, F.-X., additional, Crouzet, N., additional, Gonçalves, I., additional, Gouvret, C., additional, Ottogalli, S., additional, Faradji, H., additional, Blanc, P.-E., additional, Bondoux, E., additional, and Valbousquet, F., additional

Published
2015
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47. Progress report on phase knife stellar coronagraphy at Dome C

Author

Guerri, P., Abe, L., Daban, J.B., Aristidi, E., Bendjoya, Ph., Rivet, J.P., Vakili, F., Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE), Galilée (Galilée), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, and Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)

Abstract

Antarctic Science, 21, pp. 533-534 (2009); International audience

Published
2009
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48. The Dome C Gattini sky brightness cameras: results from the first year of operation

Author

Moore, A. M., Leslie, T., M. C. B., Aristidi, E., Bedding, T., Briguglio, R., Busso, Maurizio Maria, Candidi, M., Cutispoto, G., Distefano, E., Everett, J., Kenyon, S., Lawrence, J., Roux, B. L., Luong van, D., Phillips, A., Ragazzoni, R., Sabbatini, L., Salinari, P., Stello, D., J. W. V., Taylor, M., Tosti, Gino, Travouillon, T., Epchtein, N., and Rauer, H.

Published
2008

49. The Gattini cameras for optical sky brightness measurements in Antarctica

Author

Moore, A., Aristidi, E., Ashley, M., Briguglio, R., Busso, Maurizio Maria, Candidi, M., Everett, J., Kenyon, S., Lawrence, J., Le Roux, B., Luong van, D., Phillips, A., Ragazzoni, R., Salinari, P., Storey, J., Taylor, M., Tosti, Gino, and Travouillon, T.

Subjects
Antarctic Astronomy, Sky Monitoring, Astrophysical Technologies
Published
2007

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