Publications (10)
Gaia Data Release 3: All-sky classification of 12.4 million variable sources into 25 classes
Lorenzo Rimoldini, Berry Holl, Panagiotis Gavras +31
Gaia DR3 contains 1.8 billion sources with G-band photometry, 1.5 billion of which with BP and RP photometry, complemented by positions on the sky, parallax, and proper motion. The…
The PLATO Mission
Heike Rauer, Conny Aerts, Juan Cabrera +842
PLATO (PLAnetary Transits and Oscillations of stars) is ESA's M3 mission designed to detect and characterise extrasolar planets and perform asteroseismic monitoring of a large numb…
Photometric monitoring of Luminous Blue Variables
Carla Buemi, Elisa Distefano, Paolo Leto +6
We present some preliminary results from our program of intensive near-infrared photometric monitoring of a sample of confirmed and candidate Luminous Blue Variables (LBVs) conduct…
CoRoT and asteroseismology. Preparatory work and simultaneous ground-based monitoring
Ennio Poretti, Monica Rainer, Katrien Uytterhoeven +3
The successful launch of the CoRoT (COnvection, ROtation and planetary Transits) satellite opens a new era in asteroseismology. The space photometry is complemented by high-resolut…
Physical parameters and long-term photometric variability of V1481 Ori, a SB2 member of Orion Nebula Cluster with an accreting component
Sergio Messina, Padmakar Parihar, Katia Biazzo +5
We present the results of our analysis on V1481 Ori (JW 239), a young SB2 in the Orion Nebula Cluster with a circumbinary disc accreting on the lower-mass component. The analysis i…
Rotation of young solar-type stars as seen by Gaia and K2
Sylvain N. Breton, Elisa Distefano, Alessandro C. Lanzafame +1
Accurate surface rotation measurements are crucial to estimate stellar ages and improve our understanding of stellar rotational evolution. Comparisons of datasets obtained from dif…
Impact of photometric variability on age and mass determination of Young Stellar Objects: A case study on Orion Nebula Cluster
Sergio Messina, Padmakar S. Parihar, Elisa Distefano
In case of pre-main sequence objects, the only way to determine age and mass is by fitting theoretical isochrones on color-magnitude (alternatively luminosity-temperature) diagrams…
Evidence of New Magnetic Transitions in Late-Type Dwarfs from Gaia DR2
Alessandro C. Lanzafame, Elisa Distefano, Sydney A. Barnes +1
The second Gaia data release contains the identification of 147 535 low-mass () rotational modulation variable candidates on (or close to) the main sequence, tog…
Evidence of radius inflation in stars approaching the slow-rotator sequence
Alessandro C. Lanzafame, Federico Spada, Elisa Distefano
Average stellar radii in open clusters can be estimated from rotation periods and projected rotational velocities under the assumption of random orientation of the spin axis. Such…
Exploring pre-main sequence variables of ONC: The new variables
Padmakar Parihar, Sergio Messina, Elisa Distefano +2
Since 2004, we have been engaged in a long-term observing program to monitor young stellar objects in the Orion Nebula Cluster. We have collected about two thousands frames in V, R…