Dr. Annie Baglin, COROT Principal Investigator, CNES

HAG – two years of the Hungarian CoRoT project Margit Paparó HAG Hungarian Asteroseismology Group

COnvection ROtation and planetary Transits (ESA and COROT homepages)

Made by Zoltán Kolláth

Investigation of convection: one of the main goal Home page of Joergen Christensen-Dalsgaard

Investigation of rotation: one of the main goal Rotation of the Sun: clearly visible by sunspots Joergen Christensen-Dalsgaard

How we joined and where we work for CoRoT

Telescopes in work at Konkoly Observatory Photos by Miklós Rácz

Hungarian Asteroseismology Group Established: Participants: Margit Paparó D.Sc. – project scientist Zoltán Kolláth D.Sc. – guest investigator of CoRoT Zoltán Csubry PhD student József Benkő PhD Sódorné Bognár Zsófia PhD student – employee by HAG László Szabados D.Sc. Róbert Szabó PhD László Molnár student – employee by HAG Krisztián Sárneczky – PhD student – employed for 5 month

Honorary members of HAG PISTA – Piszkéstető Student’s Astronomy ELTE University Eszter Bokor Gyöngyi Kerekes András Már László Molnár Emese Plachy Péter Pápics Nándor Sztankó

Fields of activities Photometric characterization of seismo targets Photometric characterization of seismo targets Time series photometry of exofields Time series photometry of exofields Guide for subfield selection: ROTSE-I Guide for subfield selection: ROTSE-I Successful applications: Successful applications: - Low amplitude variation of classical - Low amplitude variation of classical pulsating stars (GI Zoltán Kolláth) pulsating stars (GI Zoltán Kolláth) - Blazhko and double mode RR Lyrae stars - Blazhko and double mode RR Lyrae stars (headed by Merieme Chadid, France) (headed by Merieme Chadid, France)

Pulsating stars studied by COROT Radial region: long periods – exofields Radial region: long periods – exofields Non-radial region: main sequence – shorter periods Non-radial region: main sequence – shorter periods Joergen Christensen Dalsgaard

Simplest waves Made by Zoltán Kolláth

Targets of asteroseismology: existing oscillations amplified by (David B. Guenther)

Propogation of waves with different parameters White – l = 0 White – l = 0 Blue – l = 2 Blue – l = 2 Green – l = 20 Green – l = 20 Yellow – l = 25 Yellow – l = 25 Red – l = 75 Red – l = 75 Joergen Christensen-Dalsgaard

Method of inversion – asteroseismology Differential layer between Green and Yellow waves is investigated Many waves – many layers are studied Joergen Christensen-Dalsgaard

Data obtained for Theta Tucanae 6 weeks, three sites – single site 20 years earlier

First step of inversion finding the frequencies of waves 10 waves were identified 10 waves were identified Binary nature was discovered Binary nature was discovered Spectroscopically confirmed later Spectroscopically confirmed later

Photometry of seismo targets I Summer targets : Summer targets : HD nights HD nights HD HD HD HD

Photometry of seismo targets II Summer targets: Summer targets: HD nights HD nights Winter targets: Winter targets: HD HD HD HD

Photometry of seismo targets III Winter targets: Winter targets: HD nights HD nights Other objects Other objects HD – Gamma Dor HD – Gamma Dor star star V920 Aql – RR Lyrae star V920 Aql – RR Lyrae star on the exofield on the exofield

Time series: Schmidt telescope (90/60 cm)

Time series on exofield of HD HD selection on star density or well-known star in the field

More effective selection of subfields: ROTSE - I Posters on 8. CoRoT week: József M. Benkő and Zoltán Csubry ROTSE-I All Sky Survey as a Tool of ROTSE-I All Sky Survey as a Tool of Target Selection in the COROT Fields Target Selection in the COROT Fields Zoltán Csubry, Zoltán Kolláth MUFRAN – A scriptale data MUFRAN – A scriptale data processing tool for variable stars processing tool for variable stars

New variable stars in the COROT eyes

Made by Zoltán Kolláth Strange modes in stars COROT data will be analized here Cepheid horn: oscillations are the same as in the star

I gave a large scale view of the Hungarian activity in the COROT scientific preparatory work. My colleagues will give the details and colours of this picture. HAG wish you a pleasant Hungarian COROT Day! Thank you