Publications of Peter O Vandervoort:

1. “The Relativistic Motion of a Charged Particle in an Inhomogeneous Electromagnetic Field,” Annals of Physics, 10, 401 (1960; Doctoral Dissertation).

2. “The Nonconstancy of the Adiabatic Invariants,” Annals of Physics, 12, 436 (1960).

3. “The Character of the Equilibrium of a Compressible, Inviscid Fluid of Varying Density,” Astrophysical Journal, 134, 699 (1961).

4. “On the Stability of Ionization Fronts,” Astrophysical Journal, 135, 212 (1962).

5. “The Character of the Equilibrium of a Compressible, Inviscid Fluid of Varying Density. II,” Astrophysical Journal, 136, 1115 (1962).

6. “The Formation of H II Regions,” Astrophysical Journal, 137, 381 (1963).

7. “The Age of the Orion Nebula,” Astrophysical Journal, 138, 294 (1963).

8. “The Formation of H II Regions. II,” Astrophysical Journal, 138, 426 (1963).

9. “The Stability of Ionization Fronts and the Evolution of H II Regions,” Astrophysical Journal, 138, 599 (1963).

10. “The Formation of H II Regions. III: A Model of the Orion Nebula,” Astrophysical Journal, 139, 869 (1964).

11. “The Formation of H II Regions. IV,” Astrophysical Journal, 139, 889 (1964).

12. “Time Scale of the Nebula,” Paper No. 6 of the Joint Discussion on the Orion Nebula held at the Twelfth General Assembly of the International Astronomical Union, Transactions of the I.A.U., 12B (1964).

13. “The Properties of Non-Stationary Ionization Fronts. I,” Astrophysical Journal, 142, 507 (1965).

14. “The Properties of Non-Stationary Ionization Fronts. II,” Astrophysical Journal, 142, 521 (1965).

15. “The Age of the Orion Nebula,” Scientific American, 212, 90 (1965).

16. “The Evolution of an H II Region During the Formation of the Exciting Star,” Astrophysical Journal, 146, 104 (1966).

17. “The Equilibrium of Rapidly Rotating Galaxies,” Astrophysical Journal, 147, 91 (1967).

18. “Properties of Rapidly Rotating Galaxies,” Proceedings of the Fourteenth International Astrophysical Symposium, The Institut d’Astrophysique, Universite de Liege (1966).

19. “Non-Axisymmetric Differential Motions in Galaxies Having Axisymmetric Mass Distributions,” Astrophysical Journal, 147, 384 (1967).

20. “Moving Pairs Among the A-Type Stars Within 20 Parsecs,” Astrophysical Journal, 152, 895 (1967).

21. “Density Waves in Galaxies of Finite Thickness,” in The Spiral Structure of Our Galaxy, Proceedings of I.A.U. Symposium No. 38, 341 (1970).

22.. “Non-Linear Density Waves in Pressureless Disks,” in The Spiral Structure of Our Galaxy, Proceedings of I.A.U. Symposium No. 38, 336 (1970; with Charles L. Berry).

23. “The Equilibria of a Highly Flattened, Rapidly Rotating Galaxy,” Astrophysical Journal, 161, 67 (1970).

24. “Density Waves in a Highly Flattened, Rapidly Rotating Galaxy,” Astrophysical Journal, 161, 87 (1970).

25. “The Equilibria of a Galaxy which is a Superposition of Subsystems,” Astrophysical Journal, 162, 453 (1970).

26. “Non-Linear Density Waves in Galaxies,” Astrophysical Journal, 166, 37 (1971).

27. “The Gravitational Acceleration Perpendicular to the Galactic Plane,” Astronomical Journal, 77, 360 (1972; with Ellen Gould).

28. “Resonant Stellar Orbits in Spiral Galaxies,” Astrophysical Journal, 180, 739 (1973).

29. “New Applications of the Equations of Stellar Hydrodynamics,” Astrophysical Journal, 195, 333 (1975).

30. “Resonant Stellar Orbits in Spiral Galaxies,” in Dynamics of Stellar Systems, Proceedings of I.A.U. Symposium No. 69, 237 (1975).

31. “Resonant Stellar Orbits in Spiral Galaxies. II. A General Epicyclic Theory,” Astrophysical Journal, 201, 50 (1975).

32. “Resonant Stellar Orbits in Spiral Galaxies. III. Applications and Numerical Tests of the General Epicyclic Theory,” Astrophysical Journal, 201, 311 (1975; with David G. Monet).

33. “Integrals of the Motion in the Resonance Regions,” in La Dynamique des Galaxies Spirales , ed L. Weliachew, 39 (1975).

34. “Resonant Stellar Orbits in Spiral Galaxies. IV. Hydrodynamic Flows in the Regions of the Lindblad Resonances,” Astrophysical Journal Supplement, 37, 519 (1978; with Jocelyn Keene).

35. “Resonant Stellar Orbits in Spiral Galaxies. V. Numerical Studies of Orbits in the Region of the Inner Lindblad Resonance,” Astrophysical Journal, 221, 87 (1978; with David G. Monet).

36. “Resonant Stellar Orbits in Spiral Galaxies. VI. The Equilibrium of a Stellar Disk in the Regions of the Lindblad Resonances,” Astrophysical Journal, 221, 539 (1978).

37. “Isolating Integrals of the Motion for Stellar Orbits in a Rotating Galactic Bar.” Astrophysical Journal, 232, 91 (1979).

38. “The Equilibrium of a Galactic Bar,” Astrophysical Journal, 240, 478 (1980).

39. “The Nonaxisymmetric Configurations of Uniformly Rotating Polytropes,” Astrophysical Journal, 241, 316 (1980).

40. “On the Construction of Models of Rotating Stars and Stellar Systems.” Astrophysical Journal, 248, 504 (1981; with Daniel E. Welty).

41. “The Effect of Gravitational Radiation on the Secular Stability of a Rotating, Axisymmetric Galaxy,” Astrophysical Journal, 256, (1982; with J. R. Ipser).

42. “The Dynamical Instability of a Rotating Axisymmetric Galaxy with Respect to a Deformation into a Bar,” Astrophysical Journal, 256, L41 (1982).

43. “A Numerical Experiment on the Equilibrium and Stability of a Rotating Galactic Bar,” Astrophysical Journal, 259, 559 (1982; with R. H. Miller, B. F. Smith, and D. E. Welty).

44. “The Equilibrium of a Galactic Bar. II. Stellar-Dynamical Counterparts of the S-Type Riemann Ellipsoids,” Astrophysical Journal, 263, 654 (1982; with D. E. Welty).

45. “On the Oscillations and the Stability of Stellar Systems,” Astrophysical Journal, 273, 511 (1983).

46. “On Schwarzschild's Method for the Construction of Model Galaxies,” Astrophysical Journal, 287, 475 (1984).

47. “On Lagrangian Methods for the Study of Small Perturbations in Stellar Systems,” Astrophysical Journal, 341, 105 (1989).

48. “Numerical Experiments on the Oscillations of a Rotating, Axisymmetric Galaxy,” Astrophysical Journal, 342, 105 (1989; with R. H. Miller, B. F. Smith, and D. E. Welty).

49. “Stellar Orbits, Galactic,” in The Reference Encyclopedia of Astronomy and Astrophysics, ed Stephen P. Maran (New York: Van Nostrand Reinhold) (1991).

50. “Modes of Oscillation in a Uniformly Rotating, Homogeneous Spheroid of Stars,” Astrophysical Journal, 377, 49 (1991).

51. “On the Effects of Interstellar Gas on the Oscillations and the Stability of Galaxies,” Astrophysical Journal, 383, 498 (1991).

52 “A Rotating Stackel Potential,” Astrophysical Journal, 389, 118 (1992; with George Contopoulos).

53. “On the Resonant Orbit of a Solar Companion Star in the Gravitational Field of the Galaxy,” Icarus , 105, 26 (1993; with Eric A. Sather).

54. “On N-Body Methods for the Study of Small Perturbations in Galaxies,” Monthly Notices of the Royal Astronomical Society, 303, 393 (1999).

55. “S. Chandrasekhar: Incidental Lessons,” Biographical Memoirs of the Indian National Sciences Academy, Vol. 23P (2002).

56. “Under the Surface of a Star,” a review of S. Chandrasekhar - The Man Behind the Legend, ed. K. Wali, Imperial College Press (1997), in Physics World (April 1998), p 46.

57. “On Stationary Oscillations of Galaxies,” Monthly Notices of the Royal Astronomical Society, 339, 537 (2003).

58. “On a Matrix Method for the Study of Small Perturbations in Galaxies,” Monthly Notices of the Royal Astronomical Society, 348, 482 (2004).

59. “On Canonical Methods for the Study of Small Perturbations in Galaxies,” Monthly Notices of the Royal Astronomical Society, 354, 601 (2004,).

60. “Chaos in the Mergers of Galaxies,” in Chaos in Astronomy 2007, ed G. Contopoulos and P. A. Patsis (Springer, Berlin, Heidelberg, New York 2008), p. 123.

61. “On Chaos in the Oscillations of Galaxies,” Monthly Notices of the Royal Astronomical Society, 411, 37 (2010).

62. “On Chaos in the Pulsations of Stars,” submitted to Monthly Notices of the Royal Astronomical Society (2013).

63. “On Resonances in the Pulsations of Stars,” to be submitted to Monthly Notices of the Royal Astronomical Society (2013).

64. “On Chaos in the Mergers of Galaxies,” to be submitted to Monthly Notices of the Royal Astronomical Society (2013).

Editorial Activities:

Theoretical Principles in Astrophysics and Relativity, Chicago: University of Chicago Press (1978, editor jointly with Norman R. Lebovitz and William H. Reid).

Celestial Mechanics and Dynamical Astronomy: An International Journal of Space Dynamics, Associate Editor 1989-1994.

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