Curriculum Vitae

Falk H Herwig

15 Jan 2006

 

 

Personal Information

Name:

Falk H. Herwig

Nationality:

German (permanent resident of Canada)

Birth place:

Hannover, Germany

Birth date:

06/09/69

Office Address:

Theoretical Astrophysics Group, T-6, MS B227, Los Alamos National Laboratory, Los Alamos, NM 87544, USA.

Home Address:

2459 45th St. Apt B, Los Alamos, NM 87544, USA, phone: +1-505-662-8859

Phone / Fax:

+1-505-667-0452 / +1-505-664-0007

E-mail:

fherwig@lanl.gov

 

 

Education

1998

Dr. rer. nat.  (Ph. D.), Astrophysikalisches Institut Potsdam and University Kiel, Germany.

 

1995

Diplom Physik (M.Sc. physics), University Kiel, Germany.

1991-1992

Non-graduating student, University of Edinburgh, Scotland.

1991

Vordiplom, Physik (B.Sc. physics), University Kiel, Germany.

 

 

Work Experience / Employment

10/03 – present

Postdoc at Los Alamos National Laboratory, NM, USA.

April 2003

Visiting Scholar at the Institute of Nuclear Theory at the University of  Washington, USA.

9/00 - 9/03

Postdoc at the University of Victoria, BC, Canada.

9/98 - 8/00

Postdoc at University Potsdam, Germany.

6/98 - 8/98

Research Visitor, Edinburgh Parallel Computing Centre, Scotland.

1995-1998

Research Assistant, Astrophysikalisches Institut Potsdam, Germany.

1993-1994

Teaching Assistant, Institute for Theoretical Physics, University Kiel.

 

 

Professional Activities and Recognitions

Awards

á     Ludwig-Biermann Award 2004 of the Astronomische Gesellschaft (German Astronomical Society).

Selected conference invitations

á     Invited review at  IAU Symp. 234, Planetary Nebulae in our Galaxy and Beyond, Hawaii, April 3-7 2006.

á     Invited review at international conference Why Galaxies Care About AGB Stars: Their importance as actors and probes, Vienna, Austria, Aug 2006.

á     Invited speaker at GSI workshop Recent developments in nuclear astrophysics, Hirschegg, Germany, Jan 2006.

á     Invited review talk. ESO-Arcetri workshop Chemical Abundances and Mixing in the Milky Way and its satellites, Sept 13-17, 2004.

á     Invited talk: The second stars. PA series workshop on Chemical Enrichment of the Early Universe, 08/04, Santa Fe, New Mexico, USA.

á     Invited talk: The s-process in low- and intermediate mass star: Solar and very low metallicity. 02/04, DANCE workshop, Santa Fe, NM, USA.

á     Invited talk: Cooking and stirring the elements in giants,  Meeting of the American Physical Society ,  April, 2003, Philadelphia, USA.

á     Invited talk: AGB and post-AGB evolution, Asymmetric Planetary Nebulae III, 2003, Mt.  Rainier, Washington, US.

á     Invited review talk: Current models for the evolution of AGB Stars, IAU Symp.  209:  Planetary Nebulae, 2001, Canberra, Australia.

á     Invited talk: Modelling the evolution of SakuraiŐs Object, International Workshop, 2000, Keele, UK.

á     Invited talk: Formation of the Neutron Donor C in AGB Stars by Overshoot and Rotation, Workshop in honour of Prof. G.  J.  Wasserburg, 2000, Torino, Italy.

Service

á     Co-organizer of splinter meeting AGB stars, winds and nucleosynthesis at Astronomische Gesellschaft fall meeting 2002.

á     HST panel reviewer, Cycle 13. Referee for Canada-France-Hawaii-Telescope TAC.

á     NSF panel reviewer.

á     Principal organizer Aspen summer workshop 2005: Physics of the s-process together with Michael Wiescher (University of Notre Dame), Jim Truran (University of Chicago and Argonne National Lab) and Rene Reifarth (LANL)

á     Organizer LANL Stellar Hydro-Days 11-14 July, 2005.

á     Co-author of Rare Isotope Accelerator theory group Blue Boook

á     Deputy-coordinator LANL astro seminar series

Membership

á     American Astronomical Society.

á     Astronomische Gesellschaft (German Astronomical Society).

á     Joint Institute of Nuclear Astrophysics (JINA).

á     RIA theory group.

Super-computing time

á     LANL Institutional Computing, 1M CPU hours Reactive turbulent convection in stars. PI, 2006/07.

Observing projects

á     ESO, La Silla, optical observations: Stellar cluster parameters, white dwarfs and the initial-final mass relation, 4 nights at the 1.5m telescope, 1996.

á     ESO, VLT, Monitoring the rapid evolution of the born-again giant SakuraiŐs Object, Co-I(1999), ID 65.L-0178.

á     Calar Alto, 3.5m, Trace elements as evolutionary indicators of PG1159 stars., Co-I (period 2001).

á     ESO, VLT, Trace elements and the evolution of extremely hot, helium-rich post-AGB stars., Co-I (Period 69).

á     HST, Iron deficiency in hot hydrogen-deficient post-AGB stars., Co-I (Cycle 12)

á     NOAO (CT-4m, KP-4m), Nitrogen abundances in very metal-poor stars. Co-I (2003)

á     HST, On the evolutionary status of extremely hot helium stars - are the O(He) stars successors of the RCrB stars?, Co-I (Cycle 13)

á     NOAO, CTIO 4m, 3 nights Nitrogen Abundances in Very Metal-Poor Stars, Prop-ID 04B-0199, Co-I (2004)

á     XMM-Newton: X-ray spectroscopy of H1504+65, an extremely hot bare stellar core, Prop ID 030101, Co-I (2004).

á     ESO, 2.2/FEROS, Radial Velocity Monitoring of Carbon-Enhanced Metal-Poor Stars, Prop ID 075.D-0120, P75, Co-I (2005).

á     ESO, FORS1, The Sakurai Object: temperature evolution and restarting the fast wind, Prop ID: 075.D-0471, P75, Co-I (2005).

á     Gemini, A Survey for 18O in Hydrogen-Deficient-Carbon Stars and R Coronae Borealis Stars, PROPID: 05B/0170, Co-I (2005).

á     Spitzer Space Telescope, MIPS IR imaging of AGB dust shells (MIRIAD), GOP 20258, Co-I (2005).

 

 

 

 

 

 

Bibliography

 

Reviews (2)

 

  1. F. Herwig. The evolution of AGB stars. Ann. Rev. Astron. & Astrophys. 34:435-479, June 2005

2.    K. Werner and F. Herwig.  Bare central stars of Planetary Nebulae and their AGB progenitors (invited review). PASP. Feb. 2006.

 

Refereed publications (29)

 

1.     F. Herwig, B. Freytag, R. M. Hueckstaedt and F. X. Timmes. Hydrodynamic simulations of He-shell flash convection. ApJ in press. 2006. astro-ph/0601164.

2.     C. L. Fryer, A. Hungerford, F. Herwig and F. X. Timmes. r-Process from supernova fallback. ApJ Lett. submitted. 2006.

3.     F. Herwig. The second stars (Ludwig Biermann award 2004 lecture). Rev. Mod. Astron.18:21-47, 2005.

4.     J. Johnson, F. Herwig, T. C. Beers and N. Christlieb. A search for nitrogen-rich extremely metal-poor stars. ApJ in prep. 2005.

5.     M. Hajduk, A. A. Zijlstra, F. Herwig etal. The Real-Time Stellar Evolution of Sakurai's Object,  Science 308:231, April 2004.

6.      G. C. Clayton, F. Herwig, T.R. Geballe, E. Tenenbaum, C.W. Engelbracht, and K. D. Gordon. An Extremely Large Excess of 18O in the Hydrogen-Deficient Carbon Star, HD 137613. ApJ Lett., 623:L141-144, April 2005.

7.     F. Herwig, S. M. Austin, and J. C. Lattanzio. Nuclear reaction rate uncertainties and astrophysical modeling. II. Carbon Yields from Low-mass Giants. Phys. Rev. C, 2005. In press.

8.     F. Herwig and S. Austin. Nuclear reaction rates and carbon star formation. ApJ Lett., 613:L73-76, September 2004.

9.     P. A. Denissenkov and F. Herwig. Enhanced extra mixing: Lithium production and thermal stability. ApJ, 612:1081-1091, September 2004.

10. F. Herwig. Evolution and yields of AGB stars at metallicity Z=0.0001. ApJS, 155:651-666, December 2004.

11. F. Herwig. Dredge-up and envelope burning in intermediate mass giants of very low metallicity. ApJ, 605:425-435, April 2004.

12. P. A. Denissenkov and F. Herwig. The abundance evolution of oxygen, sodium and magnesium in extremely metal-poor intermediate mass stars: Implications for the self-pollution scenario in globular clusters. ApJ Lett., 590:L99-L102, June 2003.

13. F. Herwig, N. Langer, and M. Lugaro. The s-Process in rotating Asymptotic Giant Branch stars. ApJ, 593:1056-1073, August 2003.

14. J. A. Stoesz and F. Herwig. Oxygen isotopic ratios in first dredge-up red giant stars and nuclear reaction rate uncertainties revisited. MNRAS, 340:763-770, April 2003.

15. M. Lugaro, F. Herwig, J. C. Lattanzio, R. Gallino, and O. Straniero. s-process nucleosynthesis in Asymptotic Giant Branch stars: A test for stellar evolution. ApJ, 586:1305-1319, April 2003.

16. O. De Marco, G. C. Clayton, F. Herwig, D. L. Pollacco, J. S. Clark, and D. Kilkenny. What are the hot R Coronae Borealis stars? AJ, 123:3387-3408, June 2002.

17. F. Herwig. Modeling the evolution of SakuraiŐs object. Ap&SS 279, 103, 2002.

18. F. Herwig. The evolutionary time scale of SakuraiŐs object: A test for convection theory.ApJ Lett., 554:L71-L74, June 2001.

19. S. Cristallo, O. Straniero, R. Gallino; F. Herwig, A. Chieffi, M. Limongi, M. Busso. The formation of the 13C pocket in Asymptotic Giant Branch stars and related nucleosynthesis. NuPhA 688, 217. May 2001.

20. F. Herwig and N. Langer. Convective proton and 3He ingestion into helium burning: Nucleosynthesis during a post-AGB thermal pulse. NuPhA 688, 221. May 2001.

21. M. Lugaro and F. Herwig. Advances in s-process models. NuPhA 688, 201. May 2001.

22. F. Herwig. The evolution of AGB stars with convective overshoot. A&A, 360:952, 2000.

23. T. Driebe, T. Blšcker, D. Schšnberner, and Herwig, F. The evolution of helium white dwarfs. II. Thermal instabilities. A&A, 350:89-100, October 1999.

24. F. Herwig, T. Blšcker, N. Langer, and T. Driebe. On the origin of hydrogen-deficient post-AGB stars. A&A, 349:L5-L8, 1999.

25. N. Langer, A. Heger, S. Wellstein, and F. Herwig. Mixing and nucleosynthesis in rotating AGB stars. A&A, 346:L37-L40, 1999.

26. F. Herwig, D. Schšnberner, and T. Blšcker. On the validity of the core-mass luminosity relation for TP-AGB stars with efficient dredge-up. A&A, 340:L43-L46, 1998.

27. T. Driebe, D. Schšnberner, T. Blšcker, and F. Herwig. The evolution of helium white dwarfs: I. The age of the companion of the millisecond pulsar PSRJ1012+5307. A&A, 339:123-133, 1998.

28. T. Blšcker, H. Holweger, B. Freytag, F. Herwig, H.-G. Ludwig, M. Steffen. Lithium Depletion in the Sun: A Study of Mixing Based on Hydrodynamical Simulations. Space Science Reviews 85, 105. August 1998.

29. F. Herwig, T. Blšcker, D. Schšnberner, and M. F. El Eid. Stellar evolution of low and intermediate-mass stars. IV. Hydrodynamically-based overshoot and nucleosynthesis in AGB stars. A&A, 324:L81-L84, 1997. 

 

Non-refereed publications (43)

 

1.     Marco Pignatari, R. Gallino, C. Baldovin  and F. Herwig. Neutron sources during shell C-burning in massive stars. IAU Symp 228. Cambridge University Press, 495. 2005.

2.     F. Herwig,  J. Johnson,  T. C. Beers and N. Christlieb. Signatures of Nitrogen Production in the Most Metal-Poor Stars from Models and Observations. AAS 205, 2104. December 2004.

3.     R. Reifarth and F. Herwig. (n,g) measurements on radioactive isotopes for astrophysics. APS,  DNP, DC009R, October 2004.

4.     P.-Q. Quiron, G. Fontaine, P. Brassard, and F. Herwig. The domains of instability for the pulsating PG 1159 stars. In 14th European Workshop on White Dwarfs, ASP Conf. Ser., in press.

5.     T. Rauch, E. Reiff, K. Werner, F. Herwig, L. Koesterke, and J. W. Kruk. On the evolutionary status of extreme hot Helium stars – are O(He) stars successors of RCrBr stars? In Astrophysics in the Far Ultraviolet, ASP Conf. Ser., in press.

6.     J. A. Johnson, F. Herwig, T. C. Beers, N. Christlieb.  Nitrogen in the Early Universe. NICVIII conference. Vancouver, BC, Canada. 2004.

7.     R. Reifarth and F. Herwig.  (n,g) Measurements on Radioactive Isotopes for Astrophysics. Division of Nuclear Physics, APS, fall meeting, 2004, Chicago.

8.     F. Herwig. AGB evolution. In Asymmetric Planetary Nebula III. ASP Conf. Ser., 2004.

9.     F. Herwig, N. Langer, M. Lugaro. Mixing and the s-Process in rotating AGB stars (Invited Review). In Stellar Rotation (IAUS 215), ASP Conf. Ser. June 2004.

10. F. Herwig. CNO in Low- and Zero-Metallicity AGB Stars. In CNO in the Universe, ASP Conf. Ser., 2003.

11. F. Herwig. Nuclear Astrophysics in AGB stars. ANS 324, 20. July 2003.

12. O. De Marco, E. L. Sandquist, M. Mac Low, F. Herwig, and R. E. Taam. Of Wolf-Rayet Central Stars and Common Envelopes. In Winds, bubbles and explosions, RevMexAA, in press, 2002.

13. A. K. Speck, F. Kemper, A. G. Whittington, F. J. Molster, and F. Herwig. Formation of Presolar Crystalline Silicates: The Effect of 26Al. In Lunar and Planetary Institute Conference Abstracts, volume 33, pages 1197+, March 2002.

14. F. Herwig. Current models for the evolution of AGB stars (invited review). In M. Dopita etal., editor, Planetary Nebulae. Their Evolution and Role in the Universe, PASP Conf. Ser., 2002. IAU Symp 209, Canberra, Australia, 19-23 November 2001.

15. F. Herwig. Past and future evolution of Sakurai's object (V 4334 Sgr). In M. Dopita etal., editors, Planetary Nebulae. Their Evolution and Role in the Universe, PASP Conf. Ser., 2002. IAU Symp 209.

16. F. Herwig, N. Langer, and M. Lugaro. The s-process in rotating AGB stars. In M. Dopita etal., editor, Planetary Nebulae. Their Evolution and Role in the Universe, PASP Conf. Ser., 2002. IAU Symp 209.

17. F. Herwig, M. Lugaro, and K. Werner. Fe-deficiency in H-deficient post-AGB stars due to n-capture nucleosynthesis. In M. Dopita etal., editor, Planetary Nebulae. Their Evolution and Role in the Universe, PASP Conf. Ser., 2002. IAU Symp 209.

18. F. Herwig, S. Amari, M. Lugaro, and E. Zinner. Could Si A+B grains originate in a postAGB thermal pulse? In M. Dopita etal., editor, Planetary Nebulae. Their Evolution and Role in the Universe, PASP Conf. Ser., 2002. IAU Symp 209.

19. S. Cristallo, O. Straniero, R. Gallino, F. Herwig, A. Chieffi, M. Limongi, and M. Busso. The formation of the 13C pocket in AGB stars and related nucleosynthesis. Nucl. Phys. A, 688:217, 2001.

20. F. Herwig. Modeling the evolution of Sakurai's Object. Ap&SS, 279:103­113, 2002.

21. F. Herwig. Internal mixing and surface abundances of [WC] CSPN. In R. Waters, B. Zijlstra, and T. Blšcker, editors, Low mass Wolf-Rayet Stars: origin and evolution, volume 275 of Ap&SS, pages 15­26, Dordrecht, 2001. Kluwer.

22. F. Herwig and N. Langer. Convective proton and He ingestion into helium burning: Nucleosynthesis during a post-AGB thermal pulse. astro-ph/0010120. Nucl. Phys. A, 688:221, 2001.

23. F. Herwig and N. Langer. Formation of the neutron donor 13C in AGB stars by overshoot and rotation. In M. Busso and R. Gallino, editors, Salting the Early Soup: Trace Nuclei from Stars to the Solar System, page 277. Mem. Soc. Astron. Ital., 2001.

24. N. Langer, A. Heger, F. Herwig, and S. Wellstein. Mixing and Thermonuclear Processes in Stars. In Tours Symposium on Nuclear Physics IV., volume 561 of AIP Conf. Proc., pages 3+, Melville, New York, 2001.

25. M. Lugaro and F. Herwig. Advances in s-process models. Nucl. Phys. A, 688:201, 2001.

26. S. Miksa, J.L. Deetjen, S. Dreizler, F. Herwig, J. Kruk, T Rauch, and K. Werner. FUSE spectroscopy of the PG1159 type central star of K 1-16. In J. L. Provencal, H. L. Shipman, J. MacDonald, and S. Goodchild, editors, 12th European Workshop on White Dwarfs, volume 226 of ASP Conf. Ser., page 60, 2001.

27. T. Blšcker, F. Herwig, and T. Driebe. TP-AGB evolution: overshoot and hot bottom burning vs. dredge-up. In F. D'Antona and R. Gallino, editors, The changes in abundances in AGB stars, Mem. Soc. Astron. Ital., 2000. in press.

28. T. Blšcker, F. Herwig, D. Schšnberner, and M. El Eid. How to make carbon stars: A new approach to model boundaries of convective regions. In IAU Symposium, volume 177, pages 524+, 2000.

29. F. Herwig and T. Blšcker. Overshoot in giant stars. In The Galactic Halo : From Globular Cluster to Field Stars, Proc. of the 35nd Lige Int. Astr. Coll., pages 59+. UniverstitŤe de Lige, 2000.

30. F. Herwig, T. Blšcker, and T. Driebe. TP-AGB evolution with overshoot for low-mass stars as a function of metallicity. In F. D'Antona and R. Gallino, editors, The changes in abundances in AGB stars, volume 71 of Mem. Soc. Astron. Ital., page 745, 2000.

31. T. Driebe, D. Schšnberner, T. Blšcker, and F. Herwig. Evolutionary models of white dwarfs with helium cores. In J.-E. Solheim and E.G. Meistas, editors, Proc. of 11th European Workshop on White Dwarfs, volume 169 of ASP Conf. Series, page 394, 1999.

32. F. Herwig, T. Blšcker, and D. Schšnberner. The role of convective boundaries. In T. Le Bertre, A. Lebre, and C. Waelkens, editors, AGB Stars, IAU Symp. 191, page 41, 1999.

33. N. Langer, A. Heger, S.E. Woosley, and F. Herwig. Nucleosynthesis in rotating stars. In N. Prantzos, editor, Nuclei in the Cosmos V, Edition Fronti`ers, page 129, Paris, 1999.

34. T. Blšcker, H. Holweger, B. Freytag, F. Herwig, H.-G. Ludwig, and M. Steffen. Lithium depletion in the sun: A study of mixing based on hydrodynamical simulations. In C. Fršhlich, M. C. E. Huber, S. Solanki, and R. von Steiger, editors, Space Science Reviews, volume 85, page 105, Dordrecht, 1998. Kluwer.

35. F. Herwig. Evolution of late stages of intermediate mass stars: Mixing processes and their consequences for stellar evolution and nucleosynthesis. PhD thesis, UniversitŠt Kiel, Germany, 1998.

36. T. Driebe, T. Blšcker, F. Herwig and D. Schoenberner. Diffusive overshooting in hot bottom burning AGB models

37. F. Herwig, D. Schšnberner, and T. Blšcker. Violation of the core mass - luminosity relation for AGB models which experience the third dredge-up. In IAU Symposia, volume 191, pages 110P+, 1998.

38. T. Blšcker, F. Herwig, T. Driebe, H. Bramkamp, and D. Schšnberner. The impact of evolutionary envelope masses on the evolution of white dwarfs. In J.Isern, M.Hernanz, and E.Garcia-Berro, editors, White Dwarfs, page 57, Dordrecht, 1997. Kluwer.

39. F. Herwig, T. Blšcker, D. Schšnberner, and M. El Eid. Hydrodynamically based overshoot treatment and nucleosynthesis in AGB stars. In IAU Symposia, volume 187, pages E42­+, 1997.

40. F. Herwig. The progenitors of high-mass white dwarfs. The cluster age of NGC 2516. In J.Isern, M.Hernanz, and E.Garcia-Berro, editors, White Dwarfs, page 63, Dordrecht, 1996. Kluwer.

41. T. Blšcker, F. Herwig, T. Driebe, H. Bramkamp, and D. Schšnberner. From planetary nebula nuclei to white dwarfs: The impact of evolutionary envelope masses. In Planetary Nebulae, Dordrecht, 1996. IAU Symp. 180, Kluwer.

42. F. Herwig. The impact of improved theoretical and observational data on the initial - final mass relation. In A. Noels, D. Fraipont-Caro, M. Gabriel, N. Grevesse, and P. Demarque, editors, Stellar Evolution: What should be done, Proc. of the 32nd Lige Int. Astr. Coll., page 441. Universit de Lige, 1995.

43. F. Herwig. Wei§e Zwerge in offenen Haufen und die Anfangs- Endmassenrelation der Sterne. Diploma thesis, UniversitŠt Kiel, 1994.