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So far Kryoneri2023 has created 93 blog entries.

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

2021-11-22T14:53:00+02:0002/03/2021|

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

2021-12-07T14:32:13+02:0029/01/2021|

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

2021-12-06T16:59:14+02:0030/09/2020|

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

2021-11-10T15:29:08+02:0021/01/2020|

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 ...

NELIOTA: Methods, statistics, and results for meteoroids impacting the Moon

2021-11-05T10:53:22+02:0020/01/2020|

 There have been 79 lunar impact flashes observed with the 1.2 m Kryoneri telescope in Greece. The masses of the meteoroids range between 0.7 g and 8 kg, and their respective sizes between 1 and 20 cm, depending on their assumed density, impact velocity, and luminous efficiency. We find a strong correlation between the observed magnitudes ...

Open night at Kryoneri Observatory 2019

2021-11-10T16:42:15+02:0008/09/2019|

Open night at Kryoneri Observatory 2019 cheska-lekarna.com On July 20th, the National Observatory of Athens and the Youth Cultural Society of Kryoneri hosted an open night at Kryoneri Observatory. Over 300 people attended the event, which included a tour of the 1.2m Kryoneri telescope, viewing of the Moon, planets and other celestial [...]

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