6 papers
Bolometric Light Curves of Supernovae
Nicholas B. Suntzeff
The thermalized energy from the radioactive decays of 56Ni and 57Ni and their daughter nuclides power the light curves of supernovae near maximum light. The bolometric light curve…
Getting the Red Out: A Stellar Approach to Determining Spatial Variations of Interstellar Dust
I. I. Ivans, C. Sneden, R. P. Kraft +4
By employing two different spectroscopic techniques we have mapped out the variable ISM dust extinction endemic to globular cluster M4. We derive an average E(B-V) reddening of 0.3…
The velocity dispersion of LMC Carbon stars: possible detection of a kinematically distinct population
David S. Graff, Andrew P. Gould, Nicholas Suntzeff +2
We analyze the velocity residuals of 551 carbon stars relative to a rotating-disk model of the inner of the Large Magellanic Cloud (LMC). We find that the great…
Properties of a Proper-Motion Selected Sample of Giants in the Small Magellanic Cloud near NGC 121
Nicholas B. Suntzeff, Alistair R. Walker, Verne V. Smith +3
We present both low and high-dispersion abundance analyses of giants drawn from the zero proper motion sample near NGC 121. For the sample of 35 stars, the mean metallicity of the…
The Ten-Year Photometric Evolution of SN 1987A
Nicholas B. Suntzeff
Ten years of photometric observations of SN 1987A are reviewed. The optical and near-infrared colors are now declining at less than 1 magnitude per 1000 days, which is consistent w…
The Distances to Five Type~II Supernovae Using the Expanding Photosphere Method and the Value of
Brian P. Schmidt Robert P. Kirshner, Ronald G. Eastman, Mark M. Phillips +4
We have used observations gathered at CTIO to measure distances by the Expanding Photosphere Method (EPM) to 5 Type II supernovae. These supernovae lie at redshifts from cz = 1100…