3rd Aarhus Red Giants Workshop

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1 3rd Aarhus Red Giants Workshop Summary of the previous meetings Víctor Silva Aguirre Teramo, April 28th 2014

2 Motivation...get stellar modellers together, compare our results, find the discrepancies, discuss the best seismic diagnosis methods for red giant stars, and agree on a minimum set of observables that the data analysis people should provide us with.

3 Meeting Format

4 Meeting Format Talks every day: very informal

5 Meeting Format Talks every day: very informal Plenty of time for discussions

6 Meeting Format Talks every day: very informal Plenty of time for discussions Computation of science cases

7 Meeting Format Talks every day: very informal Plenty of time for discussions Computation of science cases Extra presentations encouraged

8 The usual suspects

9 The usual suspects Codes:

10 The usual suspects Codes: 6 evolutionary codes: ASTEC, GARSTEC, FRANEC, LPCODE, MESA, Geneva

11 The usual suspects Codes: 6 evolutionary codes: ASTEC, GARSTEC, FRANEC, LPCODE, MESA, Geneva 3 pulsation codes: ADIPLS, Gyre, LOSC

12 The usual suspects Codes: 6 evolutionary codes: ASTEC, GARSTEC, FRANEC, LPCODE, MESA, Geneva 3 pulsation codes: ADIPLS, Gyre, LOSC Attendees:

13 The usual suspects Codes: 6 evolutionary codes: ASTEC, GARSTEC, FRANEC, LPCODE, MESA, Geneva 3 pulsation codes: ADIPLS, Gyre, LOSC Attendees: A. Weiss, J. Christensen-Dalsgaard, A. Serenelli, V. Silva Aguirre, A. Miglio, S. Cassisi, S. Hekker, D. Stello, A. Mazumdar, A. Jendreieck, C. Jiang, P. Eggenberger, G. Dogan, R. Townsend, M. Miller-Bertolami

14 The Aarhus Workshop

15 The Aarhus Workshop

16 The Aarhus Workshop Santi Cassisi: standard evolution of red giant stars

17 The Aarhus Workshop Santi Cassisi: standard evolution of red giant stars

18 The Aarhus Workshop

19 The Aarhus Workshop Victor Silva Aguirre: asteroseismic modelling of red giants

20 The Aarhus Workshop Victor Silva Aguirre: asteroseismic modelling of red giants

21 The Aarhus Workshop

22 The Aarhus Workshop Jørgen Christensen-Dalsgaard: theoretical pulsation frequencies in red giants

23 The Aarhus Workshop Jørgen Christensen-Dalsgaard: theoretical pulsation frequencies in red giants

24 The Aarhus Workshop

25 The Aarhus Workshop Saskia Hekker: analysis of Kepler red giants data

26 The Aarhus Workshop Saskia Hekker: analysis of Kepler red giants data

27 The Aarhus Workshop Saskia Hekker: analysis of Kepler red giants data

28 The Aarhus Workshop

29 The Aarhus Workshop Patrick Eggenberger: rotational mixing in red giants

30 The Aarhus Workshop Patrick Eggenberger: rotational mixing in red giants

31 The Aarhus Workshop Patrick Eggenberger: rotational mixing in red giants

32 Science cases

33 Science cases

34 Science cases

35 Science cases

36 Science cases

37 Science cases

38 Science cases 1 Msun

39 Science cases 1 Msun, 7 Rsun GARSTEC and MESA ages, age around ~1.9%" RGB-bump luminosity, LPCODE surface hydrogen" P differences ~1.7 s

40 Science cases 1 Msun, 7 Rsun

41 Science cases 1 Msun, 12 Rsun GARSTEC Teff and Yc, MESA negative Yc " age around ~1.5%" P differences ~2-3 s, within MESA ~1.8 s

42 Science cases 1.5 Msun

43 Science cases 1.5 Msun, 7 Rsun Period spacing similar to 1.0 Msun case" age around ~5%" P differences ~2 s

44 Science cases

45 Science cases 1.5 Msun, 12 Rsun Teaser: are these distinguishable?

46 Science cases 2 Msun, 10 Rsun age ~6.5 %" P differences ~5 s

47 Science cases 2 Msun, 10 Rsun Luminosity of GARSTEC models?

48 Summary Aarhus Workshop

49 Summary Aarhus Workshop

50 The Garching Workshop

51 Updated science cases

52 Updated science cases 1 Msun, 7 Rsun age spread ~2% (from 1.9%)" MESA-1 core mass-luminosity, LPCODE surface X" P differences ~1.4 s (from 1.7 s)

53 Updated science cases 1.5 Msun, 7 Rsun Period spacing slightly below to 1.0 Msun case" age around ~5% (same as before)" P differences ~1.7 s (from 2 s)

54 Summary Garching Workshop

55 Summary Garching Workshop Better agreement in interior models

56 Summary Garching Workshop Better agreement in interior models Brunt-Väisälä frequency agrees well

57 Summary Garching Workshop Better agreement in interior models Brunt-Väisälä frequency agrees well Convective cores treatment is still a problem

58 Summary Garching Workshop Better agreement in interior models Brunt-Väisälä frequency agrees well Convective cores treatment is still a problem Mass diagnostics for RGB stars

59 Summary Garching Workshop Better agreement in interior models Brunt-Väisälä frequency agrees well Convective cores treatment is still a problem Mass diagnostics for RGB stars Clump models need to be further examined, both interior models and frequencies

60 The Teramo Workshop

61 The Teramo Workshop

62 The Teramo Workshop Update:

63 The Teramo Workshop Update: Modellers please update or provide missing models if necessary Frequency computations for these updated cases Results on frequency comparisons with 3 pulsation codes

64 The Teramo Workshop Update: Modellers please update or provide missing models if necessary Frequency computations for these updated cases Results on frequency comparisons with 3 pulsation codes New models? Try a 2.5 Msun case (no helium flash) In-depth comparisons of clump models (i.e. mixing) Minimum set of observables Your idea here

65 The Teramo Workshop Update: Modellers please update or provide missing models if necessary Frequency computations for these updated cases Results on frequency comparisons with 3 pulsation codes New models? Try a 2.5 Msun case (no helium flash) In-depth comparisons of clump models (i.e. mixing) Minimum set of observables Your idea here Report:

66 The Teramo Workshop Update: Modellers please update or provide missing models if necessary Frequency computations for these updated cases Results on frequency comparisons with 3 pulsation codes New models? Try a 2.5 Msun case (no helium flash) In-depth comparisons of clump models (i.e. mixing) Minimum set of observables Your idea here Report: Comments, corrections, suggestions more than welcome. Should we publish this? Strategy?

67 Up Next

68 3rd Aarhus Red Giants Workshop Summary of the previous meetings Víctor Silva Aguirre Teramo, April 28th 2014

The Linear Oscillation Zoo Within Giant Stars: A Probe Of Their Deep Interiors

The Linear Oscillation Zoo Within Giant Stars: A Probe Of Their Deep Interiors Andrea Miglio School of Physics and Astronomy University of Birmingham the zoo of red giants: a unique snapshot of stellar