332 citations · 1.8k across the 21 of their papers we have counts for
13 papers · 1 filter
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…
SN 1997bs in M66: Another Extragalactic Eta Carinae Analog?
S. D. Van Dyk, C. Y. Peng, J. Y. King +4
We report on SN 1997bs in NGC 3627 (M66), the first supernova discovered by the Lick Observatory Supernova Search using the 0.75-m Katzman Automatic Imaging Telescope (KAIT). Based…
The Subluminous Type Ia Supernova 1998de in NGC 252
Maryam Modjaz, Weidong Li, Alexei V. Filippenko +5
We present spectroscopic and extensive photometric observations of supernova (SN) 1998de in the S0 galaxy NGC 252, discovered during the course of the Lick Observatory Supernova Se…
A High Intrinsic Peculiarity Rate Among Type Ia Supernovae
Weidong Li, Alexei V. Filippenko, R. R. Treffers +3
We have compiled a sample of 45 Type Ia supernovae (SNe Ia) discovered by the Lick Observatory Supernova Search (LOSS) and the Beijing Astronomical Observatory Supernova Survey (BA…
A High Peculiarity Rate for Type Ia SNe
W. D. Li, A. V. Filippenko, A. G. Riess +2
We have compiled a sample of 90 SNe Ia from 1997 to 1999 (up to SN 1999da) and studied the peculiarity rate of SN 1991T, SN 1991bg and SN 1986G-like objects. A Monte Carlo code is…
The Lick Observatory Supernova Search
W. D. Li, A. V. Filippenko, R. R. Treffers +8
We report here the current status of the Lick Observatory Supernova Search (LOSS) with the Katman Automatic Imaging Telescope (KAIT). The progress on both the hardware and the soft…
The Risetime of Nearby Type Ia Supernovae
Adam G. Riess, Alexei V. Filippenko, Weidong Li +7
We present calibrated photometric measurements of the earliest detections of nearby type Ia supernovae (SNe Ia). The set of ~30 new, unfiltered CCD observations delineate the early…
The Type Ia Supernova 1998bu in M96 and the Hubble Constant
S. Jha, P. Garnavich, R. Kirshner +39
We present optical and near-infrared photometry and spectroscopy of the type Ia SN 1998bu in the Leo I Group galaxy M96 (NGC 3368). The data set consists of 356 photometric measure…
The Type Ia Supernova 1997br in ESO 576-G40
W. D. Li, Y. L. Qiu, X. H. Zhu +5
The peculiar type Ia supernova SN 1997br in ESO 576-G40 was extensively observed at Beijing Astronomical Observatory and Lick Observatory. In this paper, we present and discuss the…