RESEARCH
The spectrum of the planetary nebula BV-1
RESEARCH STATEMENT
The major extensive research area involved the measurement of the
chemical compositions of the nebulae, including those in other
galaxies for which we know the distances and can have some idea of
the positions of the central stars on the log L-log T plane. In
this work, enrichments of particular elements were compared to
theoretical predictions as a means of testing and improving
theories of stellar evolution and structure. These and related
programs made use of an updated catalogue of emission-line
intensities and a large database assembled from observations at
Kitt Peak, Cerro Tololo, and Steward Observatories, and with the
International Ultraviolet Explorer.
Selected Research Publications:
The Relation Between Chemical Enrichment and Core Mass in Planetary
Nebulae. J. B. Kaler and G. H. Jacoby, Astrophysical Journal, 362,
419, 1990.
A Catalogue of Absolute Fluxes and Distances of Planetary Nebulae.
J. H. Cahn, J. B. Kaler, and L. Stanghellini, Astronomy and
Astrophysics Supplements 94, 399, 1992.
Narrow Emission Line O VI Planetary Nebula Nuclei, L. Stangehllini,
J. B. Kaler, and R. A. Shaw, Astronomy and Astrophysics, 291, 604,
1994.
Broad Emission Line O VI Planetary Nebula Nuclei, L. Stangehllini,
J. B. Kaler, R. A. Shaw, and S. di Serego Alighieri, Astronomy
and Astrophysics, 302, 211, 1995.
Abundances in Local Group Planetary Nebulae, in Highlights
of Astronomy, IAU, I. Appenzeller, ed., vol. 10, p. 480,
1995.
Variability of IUE Spectra of the Pulsating Nucleus of the
Planetary Nebula K1-16, W. A. Feibelman, J. B, Kaler, H. A. Bond,
and A. D. Grauer, Publications of the Astronomical Society of the
Pacific, 107, 914, 1995.
[N II] and [O III] Electron Temperatures in Planetary Nebulae,
F. C. McKenna, F. P. Keenan, J. B. Kaler, A. W. Wickstead,
K. L. Bell, and K. M. Aggarwaal, Publications of the Astronomical
Society of the Pacific, 108, 980, 1996.
Spectrophotometry of Planetary Nebulae: III. IIDS Observations of
Compact Nebulae, J. B. Kaler, K. B. Kwitter, R. A. Shaw, and L.
Browning, Publications of the Astronomical Society of the Pacific,
108, 980, 1996.
An Electronic Emission-Line Catalog for Planetary Nebulae, J. B.
Kaler, R. A. Shaw, and L. Browning, Publications of the
Astronomical Society of the Pacific, 189, 289, 1997.
The Enigmatic X-ray Point Sources at the Central Stars of NGC 6543
and NGC 7293, M. A. Guerrero, Y-H. Chu, R. A. Gruendl, R. M.
Williams, and J. B. Kaler, Astrophysical Journal Letters, 553, L55,
2001.
CHANDRA Reveals the X-Ray Glint in the Cat's Eye," Y-H. Chu, M. A.
Guerrero, R. A. Gruendl, R. M. Williams, and J. B. Kaler,
Astrophysical Journal Letters, 553, L69, 2001.
This page was last modified on 6 August, 2009.