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Spectroscopic study of the extremely young O-type triple system Herschel 36 A in the Hourglass Nebula. I. Orbital properties
Abdo R. Campillay, Julia I. Arias, Rodolfo H. Barbá +3
We present a detailed spectroscopic study of Herschel 36 A (H36A), the main stellar component of the massive multiple system Herschel 36 in the Hourglass Nebula, based on high-reso…
Carnegie Supernova Project-II: Extending the Near-Infrared Hubble Diagram for Type Ia Supernovae to
M. M. Phillips, Carlos Contreras, E. Y. Hsiao +41
The Carnegie Supernova Project-II (CSP-II) was an NSF-funded, four-year program to obtain optical and near-infrared observations of a "Cosmology" sample of Type Ia supern…
The Carnegie Supernova Project: Absolute Calibration and the Hubble Constant
Christopher. R. Burns, Emilie Parent, M. M. Phillips +23
We present an analysis of the final data release of the Carnegie Supernova Project I, focusing on the absolute calibration of the luminosity-decline-rate relation for Type Ia super…
The first 48: Discovery and progenitor constraints on the Type Ia supernova 2013gy
S. Holmbo, M. D. Stritzinger, B. J. Shappee +26
We present an early-phase -band light curve and visual-wavelength spectra of the normal Type Ia supernova (SN) 2013gy. The light curve is constructed by determining the appropri…
SN 2012fr: Ultraviolet, Optical, and Near-Infrared Light Curves of a Type Ia Supernova Observed Within a Day of Explosion
Carlos Contreras, M. M. Phillips, Christopher R. Burns +32
We present detailed ultraviolet, optical and near-infrared light curves of the Type Ia supernova (SN) 2012fr, which exploded in the Fornax cluster member NGC 1365. These precise hi…