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X-ORIGINAL-URL:https://www.oact.inaf.it
X-WR-CALDESC:Eventi per Osservatorio Astrofisico di Catania
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DTSTART:20220101T000000
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DTSTART;TZID=UTC:20220614T080000
DTEND;TZID=UTC:20220714T233000
DTSTAMP:20260404T003041
CREATED:20220525T111225Z
LAST-MODIFIED:20221028T171917Z
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SUMMARY:D.D. 216/22 - Concorso pubblico per titoli ed esame\, per il reclutamento di un Collaboratore Tecnico degli Enti di Ricerca – VI livello\, con contratto di lavoro a tempo determinato e regime di impegno a tempo pieno\, dal titolo “Software di controllo per Dish SKA e MeerKAT+”
DESCRIPTION:Concorso pubblico per titoli ed esame\, per il reclutamento di un Collaboratore Tecnico degli Enti di Ricerca – VI livello\, con contratto di lavoro a tempo determinato e regime di impegno a tempo pieno\, dal titolo “Software di controllo per Dish SKA e MeerKAT+” presso l’INAF-Osservatorio Astrofisico di Catania.\n\n  \n\nIn corso di pubblicazione sulla Gazzetta Ufficiale della Repubblica Italiana\, IV Serie speciale   n. 47 del 14 giugno 2022.\nBando\n\n\nLe domande di partecipazione devono essere presentate\, a pena di esclusione\, per via telematica\, utilizzando l’applicazione informatica dedicata alla pagina:\nhttps://pica.cineca.it/inaf/cter-td-oact/domande a partire dal 14.06.2022 \n\nEsito colloqui (pubblicato il 14/10/2022)\nGraduatoria di merito e approvazione atti (pubblicato il 14/10/2022)
URL:https://www.oact.inaf.it/event/concorso-pubblico-per-titoli-ed-esame-per-il-reclutamento-di-un-collaboratore-tecnico-degli-enti-di-ricerca-vi-livello-con-contratto-di-lavoro-a-tempo-determinato-e-regime-di-impegno/
CATEGORIES:concluso,Opportunità di lavoro,Tempo determinato
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BEGIN:VEVENT
DTSTART;TZID=UTC:20220630T110000
DTEND;TZID=UTC:20220630T110000
DTSTAMP:20260404T003041
CREATED:20220622T201909Z
LAST-MODIFIED:20220622T201913Z
UID:10112-1656586800-1656586800@www.oact.inaf.it
SUMMARY:The Gaia DR3 2M catalogue of stellar chromospheric activity
DESCRIPTION:DATE: Thursday\, June 30\, 11 a.m. \nORGANIZER: INAF OACT \nLOCATION: AULA OVEST (INAF-OACT) – Audience in-person max 20 \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Prof. Alessandro Lanzafame (Università di Catania) \nABSTRACT:We present the method devised for inferring the Gaia stellar activity index from the analysis of the Ca II infrared triplet (IRT) at 850.03\, 854.44\, and 866.45 nm in the Gaia Radial Velocity Spectrometer (RVS) spectrum\, an overview of the content of the chromospheric activity catalogue published in DR3\, and its scientific validation. A sample of well studied PMS stars is considered to identify the regime in which the Gaia stellar activity index may be affected by mass accretion. The correlation with the amplitude of the photometric rotational modulation is also discussed. Three regimes of the chromospheric stellar activity are identified\, confirming suggestions made by previous authors on much smaller chromospheric activity indices datasets. The highest stellar activity regime is associated with PMS stars and RS CVn systems\, in which activity is enhanced by tidal interaction. Some evidence of a bimodal distribution in MS stars with Teff > 5000 K is also found\, which defines the two other regimes\, without a clear gap in between. Stars with 3500 K < Teff < 5000 K are found to be either very active PMS stars or active MS stars with a unimodal distribution in chromospheric activity. A dramatic change in the activity distribution is found for Teff < 3500 K\, with a dominance of low activity stars close to the transition between partially- and fully-convective stars and a rise in activity down into the fully-convective regime. Overall\, the 2M catalogue of chromospheric activity in Gaia DR3 represents a gold mine for studies related to stellar magnetic activity and mass accretion in the solar vicinity. \n  \nA few rules:— access the virtual room with the microphone and camera switched off.— for questions leave a message in the chat and the answers at the end of the webinar.
URL:https://www.oact.inaf.it/event/the-gaia-dr3-2m-catalogue-of-stellar-chromospheric-activity/
CATEGORIES:Eventi & Seminari
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