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A Deep, Wide-Field, and Panchromatic View of 47 Tuc and the SMC with HST: Observations and Data Analysis Methods
Jason S. Kalirai, Harvey B. Richer, Jay Anderson +10
In HST Cycle 17, we imaged the well known globular star cluster 47 Tucanae for 121 orbits using ACS and both the UVIS and IR channels of WFC3 (GO-11677, PI - H. Richer). This uniqu…
The Spectral Energy Distributions of White Dwarfs in 47 Tucanae: The Distance to the Cluster
K. A. Woodley, R. Goldsbury, J. S. Kalirai +13
We present a new distance determination to the Galactic globular cluster 47 Tucanae by fitting the spectral energy distributions of its white dwarfs to pure hydrogen atmosphere whi…
Constraints on the Progenitor System of the Type Ia Supernova SN 2011fe/PTF11kly
Weidong Li, Joshua S. Bloom, Philipp Podsiadlowski +25
Type Ia supernovae (SNe) serve as a fundamental pillar of modern cosmology, owing to their large luminosity and a well-defined relationship between light-curve shape and peak brigh…
Early radio and X-ray observations of the youngest nearby type Ia supernova PTF11kly (SN 2011fe)
Assaf Horesh, S. R. Kulkarni, Derek B. Fox +20
On August 24 (UT) the Palomar Transient Factory (PTF) discovered PTF11kly (SN 2011fe), the youngest and most nearby type Ia supernova (SN Ia) in decades. We followed this event up…
WISEP J180026.60+013453.1: A Nearby Late L Dwarf Near the Galactic Plane
John E. Gizis, Adam J. Burgasser, Jacqueline K. Faherty +2
We report a nearby L7.5 dwarf discovered using the Preliminary Data Release of the Wide-field Infrared Survey Explorer (WISE) and the Two Micron All-Sky Survey (2MASS). WISEP J1800…
Eclipses During the 2010 Eruption of the Recurrent Nova U Scorpii
Bradley E. Schaefer, Ashley Pagnotta, Aaron LaCluyze +34
The eruption of the recurrent nova U Scorpii on 28 January 2010 is now the all-time best observed nova event. We report 36,776 magnitudes throughout its 67 day eruption, for an ave…