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The Distance to SN 1999em in NGC 1637 from the Expanding Photosphere Method
Douglas C. Leonard, Alexei V. Filippenko, Elinor L. Gates +13
We present 30 optical spectra and 49 photometric epochs sampling the first 517 days after discovery of supernova (SN) 1999em, and derive its distance through the expanding photosph…
BVRI Photometry of Supernovae
Wynn C. G. Ho, Schuyler D. Van Dyk, Chien Y. Peng +5
We present optical photometry of one Type IIn supernova (1994Y) and nine Type Ia supernovae (1993Y, 1993Z, 1993ae, 1994B, 1994C, 1994M, 1994Q, 1994ae, and 1995D). SN 1993Y and SN 1…
The Unique Type Ia Supernova 2000cx in NGC 524
Weidong Li, Alexei V. Filippenko, Elinor Gates +8
We present extensive photometric and spectroscopic observations of the Type Ia supernova (SN Ia) 2000cx in the S0 galaxy NGC 524, which reveal it to be peculiar. Photometrically, S…
Multiwavelength Monitoring of the Narrow-Line Seyfert 1 Galaxy Akn 564. III. Optical Observations and the Optical--UV--X-ray Connection
O. Shemmer, P. Romano, R. Bertram +36
We present the results of a two-year long optical monitoring program of the narrow-line Seyfert 1 galaxy Akn 564. The majority of this monitoring project was also covered by X-ray…
An Infrared Camera for Leuschner Observatory and the Berkeley Undergraduate Astronomy Lab
James R. Graham, Richard R. Treffers
We describe the design, fabrication, and operation of an infrared camera which is in use at the 30-inch telescope of the Leuschner Observatory. The camera is based on a Rockwell PI…