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First Results from the Lick AGN Monitoring Project: The Mass of the Black Hole in Arp 151
Misty C. Bentz, Jonelle L. Walsh, Aaron J. Barth +24
We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 13 ne…
Coronal lines and dust formation in SN 2005ip: Not the brightest, but the hottest Type IIn supernova
Nathan Smith, Jeffrey M. Silverman, Ryan Chornock +7
We present optical photometry and spectroscopy of SN2005ip for the first 3yr after discovery, showing an underlying Type II-L SN interacting with a steady wind to yield an unusual…
The Detection of a Light Echo from the Type Ia Supernova 2006X in M100
Xiaofeng Wang, Weidong Li, Alexei V. Filippenko +3
We report the discovery of a light echo (LE) from the Type Ia supernova (SN) 2006X in the nearby galaxy M100. The presence of the LE is supported by analysis of both the Advanced C…
Optical and Near-Infrared Observations of the Highly Reddened, Rapidly Expanding Type Ia Supernova 2006X in M100
Xiaofeng Wang, Weidong Li, Alexei V. Filippenko +14
We present extensive optical (UBVRI), near-infrared (JK) light curves and optical spectroscopy of the Type Ia supernova (SN) 2006X in the nearby galaxy NGC 4321 (M100). Our observa…
Distribution of Ni Yields of Type Ia Supernovae and its Implication for Progenitors
Bo Wang, Xiangcun Meng, Xiaofeng Wang +1
The amount of Ni produced in type Ia supernova (SN Ia) explosion is probably the most important physical parameter underlying the observed correlation of SN Ia luminosities…
Determination of the Hubble constant, the intrinsic scatter of luminosities of Type Ia SNe, and evidence for non-standard dust in other galaxies
Xiaofeng Wang, Lifan Wang, Reynald Pain +2
A sample of 109 type Ia supernovae (SNe Ia) with recession velocity < 30,000 km s^{-1}, is compiled from published SNe Ia light curves to explore the expansion rate of the local Un…
Optical Photometry of Type II-P Supernova 2004dj in NGC 2403
Tianmeng Zhang, Xiaofeng Wang, Weidong Li +4
We present photometric data of the type II-P supernova (SN) 2004dj in NGC 2403. The multicolor light curves cover the SN from 60 to 200 days after explosion, and are measure…
The Progenitor of Supernova 2004dj in a Star Cluster
Xiaofeng Wang, Yanbin Yang, Tianmeng Zhang +5
The progenitor of type II-plateau supernova (SN) 2004dj is identified with a supergiant in a compact star cluster known as "Sandage Star 96" (S96) in the nearby spiral galaxy NGC 2…
A Novel Color Parameter As A Luminosity Calibrator for Type Ia Supernovae
Xiaofeng Wang, Lifan Wang, Xu Zhou +2
Type Ia supernovae (SNe Ia) provide us with a unique tool for measuring extragalactic distances and determining cosmological parameters. As a result, the precise and effective cali…
Intermediate-band Photometry of Type Ia Supernovae
Xiaofeng Wang, Xu Zhou, Tianmeng Zhang +1
We present optical light curves of five Type Ia supernovae (2002er, 2002fk, 2003cg, 2003du, 2003fk). The photometric observations were performed in a set of intermediate-band filte…
Optical Photometry of SN 1993J: Years 1995 to 2003
Tianmeng Zhang, Xiaofeng Wang, Xu Zhou +4
In this paper, the late-time optical photometry of supernova (SN) 1993J in M81 from Feburary 1995 to Janurary 2003 is presented. The observations were performed in a set of interme…