Athanasopoulos, D. ; Hanuš, J. ; Avdellidou, C. ; van Belle, G. ; Ferrero, A. ; Bonamico, R. ; Gazeas, K. ; Delbo, M. ; Rivet, J. P. ; Apostolovska, G. ; Todorović, N. ; Novakovic, B. ; Bebekovska, E. V. ; Romanyuk, Y. ; Bolin, B. T. ; Zhou,
Eleni Lalounta, Panagiota-Eleftheria Christopoulou, Athanasios Papageorgiou , C. E. Ferreira Lopes, and Márcio Catelan https://doi.org/10.3847/1538-3881/ad4882 August 2024 Abstract Low-mass ratio systems (LMR) are a very interesting class of contact eclipsing binaries challenging the theoretical models of stability. These systems are also considered possible progenitors of
We would like to inform the Astronomical community that during the period July - October 2024 the "Aristarchos" telescope will not operate, due to technical works related to its maintenance and upgrading. The ESA-funded modernization of Aristarchus will significantly increase the telescope's capabilities for high-quality astronomical observations.
Ramos-Larios G., Guerrero M. A., Toalá J. A., Akras S., Fang X.
Papageorgiou, Athanasios ; Christopoulou, Panagiota-Eleftheria ; Lalounta, Eleni ; Ferreira Lopes, C. E. ; Catelan, Márcio ; Drake, Andrew J. ; Ηantzios, Panayiotis ; Alikakos, Ioannis eprint arXiv:2306.11607 August 2023 Abstract We present a multiband photometric analysis of CRTS J163819.6+03485, the first low-mass-ratio contact binary
The Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing (IAASARS) of the National Observatory of Athens actively participates as one of the main pillars in the Hellenic network for the ERMIS Hellenic Cubesat Demonstration Mission that aims to certify new, innovative space technologies and applications, such as 5G communications for the Internet of Things (IoT), satellite telecommunications and a multispectral camera for earth observation.
Papageorgiou, A., Christopoulou, P.-E., Ferreira Lopes, C. E., Lalounta, E., Catelan, M., Drake, A. J. eprint arXiv:2212.03838 March 2023 Abstract We present the photometric analysis of three ultra-short-period total eclipsing binaries in contact configuration, CRTS_J172718.0+431624, OGLE-BLG-ECL-000104, and OGLE-BLG-ECL-000012, mined from massive astronomical surveys. Using the
Athanasopoulos, D., Hanuš, J., Avdellidou, C., Bonamico, R., Delbo, M., Conjat, M., Ferrero, A., Gazeas, K., Rivet, J. P., Sioulas, N., van Belle, G., Antonini, P., Audejean, M., Behrend, R., Bernasconi, L., Brinsfield, J. W., Brouillard, S., Brunetto, L., Fauvaud, M., Fauvaud, S., Gonzalez, R., Higgins, D., Holoien, T. W.
Loukaidou, G. A. ; Gazeas, K. D. ; Palafouta, S. ; Athanasopoulos, D. ; Zola, S. ; Liakos, A. ; Niarchos, P. G. ; Hakala, P. ; Essam, A. ; Hatzidimitriou, D. eprint arXiv:2112.06631 August 2022 Abstract Ultra-short orbital period contact binaries (Porb < 0.26
Studies on the circumstellar structures around evolved stars provide vital information on the evolution of the parent star and the properties of the local interstellar medium. In this work, we present the discovery and characterization of an optical cocoon tail behind the star HD 185806. The cocoon apex emission is puzzling, as it is detected in the infrared but shows no signal in the optical wavelength.