7 papers
A Brief History of Astronomical Brightness Determination Methods at Optical Wavelengths
Kevin Krisciunas
In this brief article I review the history of astronomical photometry, touching on observations made by the ancient Chinese, Hipparchus and Ptolemy, the development of the concept…
1996 multisite photometric and spectral campaign on the lambda Boo star 29 Cyg
D. E. Mkrtichian, A. V. Kusakin, V. P. Malanushenko +11
The preliminary results of a 1996 multisite campaign on the pulsating lambda Bootis star 29 Cyg are presented. This campaign, initiated by the Central Asian Network (CAN), allowed…
New Photometry of the Hyades Scuti star V777 Tau (71 Tau)
Kevin Krisciunas, Theodore Simon, Richard A. Crowe +1
71 Tau was discovered to be a Scuti star by Horan (1979, AJ 84, 1770). To our knowledge no other photometry of this star has been published. 71 Tau is the second brightest X-ra…
Errata in \em {Enclyclopedia of Cosmology}
Kevin Krisciunas
I have noted a number of errors, most of them quite minor, in the {\em Encyclopedia of Cosmology} (New York and London: Garland), 1993, Norriss S. Hetherington, ed. The majority oc…
The Sign of Four: A new class of cool non-radially pulsating stars?
Kevin Krisciunas
In this paper we discuss four early F-type variable stars whose periods are an order of magnitude slower than known pulsators of comparable luminosity. They cannot be stars undergo…
Look Back Time, the Age of the Universe, and the Case for a Positive Cosmological Constant
Kevin Krisciunas
We present explicit expressions for the calculation of cosmological look back time, for zero cosmological constant and arbitrary density parameter , which, in the limit as redsh…