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Extension of NELIOTA lunar impact observations through the CARMEN project

By |2021-12-06T21:06:39+02:00August 4th, 2021|

We are happy to announce the extension of the NELIOTA project for two years. Starting in August 2021, the project is funded by ESA through the project Consolidating Activities Regarding Moon, Earth and NEOs (CARMEN, contract No. 4000134667/21/D/MRP), coordinated by 6ROADS, until July 2023.

Optical observations of the BepiColombo spacecraft as a proxy for a potential threatening asteroid

By |2021-12-15T14:46:27+02:00July 1st, 2021|

We present the results of our ground-based astrometric observation campaign of BepiColombo during its Earth fly-by on 2020 April 10. The observational circumstances induced by the fly-by geometry made this event an excellent proxy for a close fly-by or an imminent impact of a natural body with a diameter of a few meters, with the added benefit of having a ground-truth orbit (from radio tracking) to compare with our purely ...

National Observatory of Athens and the Peloponnese Region signed partnership agreement for the upgrade of the Kryoneri Observatory

By |2021-11-22T14:53:00+02:00March 2nd, 2021|

The program agreement was signed between the National Observatory of Athens and the Peloponnese Region for the upgrade of the infrastructure of the Kryoneri Observatory with funding from the region of Peloponnesus of 3M euro. The first pillar of the project is the further upgrade of the Kryoneri telescope, thus increasing its observational capabilities. The second pillar focuses on the diffusion of science by creating an exhibition space, where the visitor will be able to take a historical walk in the contribution of this telescope to the science of Astronomy.

CoBiToM project – I. Contact binaries towards merging

By |2021-12-07T14:32:13+02:00January 29th, 2021|

Binary and multiple stellar systems are numerous in our solar neighbourhood with 80 per cent of the solar-type stars being members of systems with high order multiplicity. The Contact Binaries Towards Merging (CoBiToM) Project is a programme that focuses on contact binaries and multiple stellar systems, as a key for understanding stellar nature. The goal is to investigate stellar coalescence and merging processes, as the final state of stellar evolution of low-mass contact binary systems. Obtaining observational data of approximately 100 eclipsing binaries and multiple systems and more than 400 archival systems, the programme aspires to give insights for their physical and orbital parameters and their temporal variations, e.g. the orbital period ...

Discovery of five new eclipsing systems of W UMa type

By |2021-12-06T16:59:14+02:00September 30th, 2020|

The present work contains light curve, spectroscopic, and asteroseismic analyses for KIC 04851217 and KIC 10686876. These systems are detached eclipsing binaries hosting a pulsating component of δ Scuti type and have been observed with the unprecedented accuracy of the Kepler space telescope. Using ground-based spectroscopic observations, the spectral types of the primary components of the systems were estimated as A6V and A5V for KIC 04851217 and KIC 10686876, respectively, with an uncertainty of one subclass. The present spectral classification, together with literature radial velocity curves, were used to model the light curves of the systems and, therefore, to calculate the absolute parameters of their ...

Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye

By |2021-11-10T15:29:08+02:00January 21st, 2020|

Binary and multiple stellar systems are numerous in our solar neighbourhood with 80 per cent of the solar-type stars being members of systems with high order multiplicity. The Contact Binaries Towards Merging (CoBiToM) Project is a programme that focuses on contact binaries and multiple stellar systems, as a key for understanding stellar nature. The goal is to investigate stellar coalescence and merging processes, as the final state of stellar evolution of low-mass contact binary systems. Obtaining observational data of approximately 100 eclipsing binaries and multiple systems and more than 400 archival systems, the programme aspires to give insights for their physical and orbital parameters and their temporal variations, e.g. the orbital period ...

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