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10 papers
Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters
D. O. Jones, D. M. Scolnic, A. G. Riess +25
We use 1169 Pan-STARRS supernovae (SNe) and 195 low- () SNe Ia to measure cosmological parameters. Though most Pan-STARRS SNe lack spectroscopic classifications, in a p…
The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
D. M. Scolnic, D. O. Jones, A. Rest +37
We present optical light curves, redshifts, and classifications for 365 spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1) Medium Deep Surv…
An updated Type II supernova Hubble diagram
E. E. E. Gall, R. Kotak, B. Leibundgut +15
We present photometry and spectroscopy of nine Type II-P/L supernovae (SNe) with redshifts in the 0.045 < z < 0.335 range, with a view to re-examining their utility as distance ind…
On the nature of Hydrogen-rich Superluminous Supernovae
C. Inserra, S. J. Smartt, E. E. E. Gall +33
We present two hydrogen-rich superluminous supernovae (SLSNe), namely SN2013hx and PS15br. These objects, together with SN2008es are the only SLSNe showing a distinct, broad Halpha…
Applying the expanding photosphere and standardized candle methods to Type II-Plateau supernovae at cosmologically significant redshifts: the distance to SN 2013eq
E. E. E. Gall, R. Kotak, B. Leibundgut +3
Based on optical imaging and spectroscopy of the Type II-Plateau SN 2013eq, we present a comparative study of commonly used distance determination methods based on Type II supernov…
A supernova distance to the anchor galaxy NGC 4258
J. Polshaw, R. Kotak, K. C. Chambers +8
The fortuitous occurrence of a type II-Plateau (IIP) supernova, SN 2014bc, in a galaxy for which distance estimates from a number of primary distance indicators are available provi…
A comparative study of Type II-P and II-L supernova rise times as exemplified by the case of LSQ13cuw
E. E. E. Gall, J. Polshaw, R. Kotak +17
We report on our findings based on the analysis of observations of the Type II-L supernova LSQ13cuw within the framework of currently accepted physical predictions of core-collapse…
PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
S. J. Smartt, S. Valenti, M. Fraser +99
The Public European Southern Observatory Spectroscopic Survey of Transient Objects (PESSTO) began as a public spectroscopic survey in April 2012. We describe the data reduction str…
The Earliest Near-infrared Time-series Spectroscopy of a Type Ia Supernova
E. Y. Hsiao, G. H. Marion, M. M. Phillips +19
We present ten medium-resolution, high signal-to-noise ratio near-infrared (NIR) spectra of SN 2011fe from SpeX on the NASA Infrared Telescope Facility (IRTF) and Gemini Near-Infra…
Interpreting the near-infrared spectra of the 'golden standard' Type Ia supernova 2005cf
E. E. E. Gall, S. Taubenberger, M. Kromer +5
We present nine near-infrared (NIR) spectra of supernova (SN) 2005cf at epochs from -10 d to +42 d with respect to B-band maximum, complementing the existing excellent data sets av…