Dr. Annie Baglin, COROT Principal Investigator, CNES
HAG – two years of the Hungarian Co. Ro. T 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 Co. Ro. T
Telescopes in work at Konkoly Observatory Photos by Miklós Rácz
Hungarian Asteroseismology Group Established: 2005 Participants: Margit Paparó D. Sc. – project scientist Zoltán Kolláth D. Sc. – guest investigator of Co. Ro. T Zoltán Csubry Ph. D student József Benkő Ph. D Sódorné Bognár Zsófia Ph. D student – employee by HAG László Szabados D. Sc. Róbert Szabó Ph. D László Molnár student – employee by HAG Krisztián Sárneczky – Ph. D 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 • Time series photometry of exofields • Guide for subfield selection: ROTSE-I • Successful applications: - Low amplitude variation of classical pulsating stars (GI Zoltán Kolláth) - Blazhko and double mode RR Lyrae stars (headed by Merieme Chadid, France)
Pulsating stars studied by COROT • Radial region: long periods – exofields • Non-radial region: main sequence – shorter periods Joergen Christensen Dalsgaard
Simplest waves Made by Zoltán Kolláth
Targets of asteroseismology: existing oscillations amplified by 100000 (David B. Guenther)
Propogation of waves with different parameters • White – l = 0 • Blue – l = 2 • Green – l = 20 • Yellow – l = 25 • 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 Binary nature was discovered Spectroscopically confirmed later
Photometry of seismo targets I • Summer targets: 2005 2006 HD 181555 3 8 nights HD 180642 2 5 HD 170782 - 3
Photometry of seismo targets II • Summer targets: 2005 HD 172189 2 2006 - nights • Winter targets: HD 44195 8 3 HD 44283 4 3
Photometry of seismo targets III • Winter targets: • HD 50844 2006 7 nights • Other objects • HD 48434 – Gamma Dor star V 920 Aql – RR Lyrae star on the exofield
Time series: Schmidt telescope (90/60 cm)
Time series on exofield of HD 49933+ HD 49434 selection on star density or well-known star in the field
More effective selection of subfields: ROTSE - I Posters on 8. Co. Ro. T week: József M. Benkő and Zoltán Csubry ROTSE-I All Sky Survey as a Tool of Target Selection in the COROT Fields Zoltán Csubry, Zoltán Kolláth MUFRAN – A scriptale data processing tool for variable stars
New variable stars in the COROT eyes
Strange modes in stars COROT data will be analized here Cepheid horn: oscillations are the same as in the star Made by Zoltán Kolláth
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
Скачать презентацию Dr Annie Baglin COROT Principal Investigator CNES
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