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The monitoring of 8.0<V<9.5 stars around primary targets Ennio Poretti INAF-OAB.

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Presentation on theme: "The monitoring of 8.0<V<9.5 stars around primary targets Ennio Poretti INAF-OAB."— Presentation transcript:

1 The monitoring of 8.0<V<9.5 stars around primary targets Ennio Poretti INAF-OAB

2 High resolution spectroscopy of all stars with V<8.0 in both fields 978 stars 978 stars ESO/FEROS 439 OHP/ELODIE 422 Brasil(ESO)/FEROS 103 TNG/SARG 76 Belgium(ESO)/CORALIE 17 Tautenburg 11 Long-term action started by French astronomers at OHP (PI: C. Catala) Combined with uvbyBeta photometry at Sierra Nevada Observatory (PI: R.Garrido) ELODIE spectrograph not very efficient, impossible to complete the programme First step of the Italian collaboration (E. Antonello in May 2000) First ESO Proposal submitted in September 2000 (PI: E. Poretti) FEROS observations in July 2001 and January 2003 (Obs.: L. Mantegazza) Non-observations in January 2002 (not accepted) and in July 2002 (bad weather) Data reduction completed in June 2003 (Mantegazza, Rainer, Bossi) Contribution from Brazilian astronomers (July 2002; E. Janot-Pacheco) to complete the survey in the Center direction

3 High resolution spectroscopy: the TNG/SARG contribution A semi-authomatic pipeline has been developed by W. W.Weiss at Vienna, with the collaboration of Catania group. Example:HD 44019 K2 IV Insufficient resources to monitor AntiCenter field: critical situation at CW1 (Vienna, September 2001). 1.5 nights in February 2002 2.0 nights in January 2003 SARG data ingested in GAUDI

4 The extension to stars with 8.0<V<9.5 To have a wider choice and to complete the HR diagram coverage Monitoring limited around selected primary targets uvbyBeta photometry completed in early 2005 at OSN HR spectroscopy very telescope-time consuming Survey in the AntiCenter direction : Serra La Nave observations (M. Rainer, next talk) Survey in the Center direction FEROS at ESO Observations in June 2005, 4 nights (M. Rainer) FRESCO at SLN Observations already running (G. Cutispoto)

5 Examples of monitoring around two primary targets Limited to stars close to the targets. The number of stars seems adequate to search for additional secondary targets.

6 Priorities 1.HD 181555 – HD 180642 : 13 stars 2.HD 171834 with IC 4756 : 30 stars HIGH 3.HD 170580 – HD 170782 : 6 stars 4.HD 177552 : 21 stars 5.HD 171834 without IC 4756 : 12 stars 6.HD 170580 only : 6 stars LOW 7.HD 181555 or HD 180642 only : 12 stars Total : 100 stars

7 Special programmes to investigate Seismology targets in the Center direction in the Center direction Search for LPV in the GDOR variable HD 171834 (SLN, OHP) HD 172189: Velocity radial curve (SLN, OHP) Eclipse of the pulsating variable (FEROS) P.I. : G. Cutispoto (SLN) P. Mathias (OHP) M. Rainer (FEROS)

8 ….. hoping to report on the results at the next Corot Week …..


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