Trigonometric Parallaxes of Central Stars of Planetary Nebulae

Abstract

Trigonometric parallaxes of 16 nearby planetary nebulae are presented, including reduced errors for seven objects with previous initial results and results for six new objects. The median error in the parallax is 0.42 mas, and 12 nebulae have parallax errors of less than 20%. The parallax for PHL 932 is found here to be smaller than was measured by Hipparcos, and this peculiar object is discussed. Comparisons are made with other distance estimates. The distances determined from these parallaxes tend to be intermediate between some short distance estimates and other long estimates; they are somewhat smaller than those estimated from spectra of the central stars. Proper motions and tangential velocities are presented. No astrometric perturbations from unresolved close companions are detected.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2007
Accession Number
ADA463999

Entities

People

  • Alice K. Monet
  • Blaise Canzian
  • Christian B. Luginbuhl
  • Conard C. Dahn
  • David G. Monet
  • Harry H. Guetter
  • Hugh C. Harris
  • Jeffrey R. Pier
  • S. K. Leggett
  • Stephen E. Levine

Organizations

  • United States Naval Observatory Flagstaff Station

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Agreements
  • Catalogs
  • Celestial Brightness
  • Data Processing
  • Detectors
  • Dynamic Range
  • Ground Based
  • Measurement
  • Observation
  • Observatories
  • Perturbations
  • Precision
  • Radial Velocity
  • Spectra
  • Telescopes

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics