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TEACHING
- Population III stars
Pictured above is the unusual outburst object V838 Monocerotis. Before February 2002 there was no red giant in this part of the sky, and then there was. There is no definitive explanation for what happened, but you can read one theory below (Lawlor, 2005). REFEREED PUBLICATIONS: Helium
Layer Masses and a Criterion for The Born Again Phenomena
A new model for
V838 Mon: a born-again object with an epoch of accretion Sakurai's
Object, FG Sge, and V605 Aql: An Evolutionary Sequence Revealed
Conference Proceedings and Publications: T.M. Lawlor, J. MacDonald, and T.R. Young, 2007, “10M?
Population III single and binary evolution models,” The First Stars III,
eds. T. Abel, A. Heger, and B. O’Shea, American Institute of Physics
Conference Proceedings, In Press
T.R. Young, T. Johnson, T.M. Lawlor, and J. MacDonald 2007, “Population III Supernova Light Curves from Massive Stars in Binaries,” The First Stars III, eds. T. Abel, A. Heger, and B. O’Shea, American Institute of Physics Conference Proceedings, In
T.M. Lawlor 2007, “The Reflection Effect In Born-Again Objects,” 210th Meeting of the American Astronomical Society, Bulletin of the American Astronomical Society, 39, p159
T.R. Young, T. Johnson, and T.M. Lawlor, 2007, “Population III Supernova Light Curves,” 210th Meeting of the American Astronomical Society, Bulletin of the American Astronomical Society, 39, 123.13
Evolution models for V838 Mon: born-again binaries and others, (contributed talk) T.M. Lawlor, May 2006 The Nature of V838 Mon and its Light Echo La Palma, Spain, eds. Romano Corradi and Ullisse Munari, Conference Proceedings in press
Massive pop III stars and their
resulting SN light curves, V838 Mon: Not a Born Again Object?
Sakurai's Object, FG Sge, and V605 Aql, T.M. Lawlor & J. MacDonald, 2002, IAU Colloq. 187, Exotic stars as challenges to evolution, ed. C.A. Tout and W. Van Hamme, 193 The Born Again Phenomena and its Link to H-deficient Post-AGB Objects T.M. Lawlor & J. MacDonald, 2000, in 12th European Workshop on White Dwarfs, eds. J.L. Provencal, H.L. Shipman, J. MacDonald, and S. Goodchild, (Lecture Notes in Physics, Springer-Verlag), 20 Theoretical-Observational
comparisons and details in the evolution of Sakurai’s Object, T.M. Lawlor & J. MacDonald, 2000, Astrophysics
and Space Science, 279, Special Issue: Sakurai’s Object: What have we
learned in the first five years? ed. J. Dyson, S.A. Lamb, A.
Evans, and B. Smalley, 123 Hot Sub-dwarfs: Infrared Fluxes,
Binaries and Oscillations M Stars Model Atmospheres: Spectra
and Colors American
Astronomical Society (ApJ, AJ, ApJS)
Other Astronomy Activities: In
June 2004 I traveled to New Delhi, India to image the transit of Venus.
To find out more about this astronomical event and our trip to New Delhi and
Agra (Taj Mahal) visit: http://www.und.edu/instruct/young/toast/VENUS-TRANSIT/ http://newdelhi.usembassy.gov/060804.html 
 10:54 AM 11:03 AM CCD images of Venus on the disk of the Sun. Taken with an SBIG 9E on a C8 with a focal reducer.
SOME FUN PHYSICS/SCIENCE EDUCATIONAL LINKS: A long list of really useful educational sites: http://webs.wichita.edu/physics/links.htm
find out more? tlawlor@psu.edu This page has been accessed 6129times
since Oct 04 2001. The Pennsylvania State
University is not responsible for and does not review the content of personal
web pages. - webmaster@psu.edu
Last modified: Wednesday, 11-Jun-2008 14:09:47 EDT3/2007 |
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