77 citations · 410 across the 26 of their papers we have counts for
6 papers · 1 filter
ASASSN-14lp: two possible solutions for the observed UV suppression
Barnabás Barna, Talytha Pereira, Stefan Taubenberger +10
We test the adequacy of ultraviolet (UV) spectra for characterizing the outer structure of Type Ia supernova (SN) ejecta. For this purpose, we perform spectroscopic analysis for AS…
Breaking the color-reddening degeneracy in type Ia supernovae
M. Sasdelli, E. E. O. Ishida, W. Hillebrandt +3
A new method to study the intrinsic color and luminosity of type Ia supernovae (SNe Ia) is presented. A metric space built using principal component analysis (PCA) on spectral seri…
A Luminous Peculiar Type Ia Supernova SN 2011hr: More Like SN 1991T or SN 2007if?
Jujia Zhang, Xiaofeng Wang, Michele Sasdelli +23
Photometric and spectroscopic observations of a slowly declining, luminous Type Ia supernova (SN Ia) SN 2011hr in the starburst galaxy NGC 2691 are presented. SN 2011hr is found to…
Exploring the spectroscopic diversity of type Ia supernovae with DRACULA: a machine learning approach
Michele Sasdelli, E. E. O. Ishida, R. Vilalta +8
The existence of multiple subclasses of type Ia supernovae (SNeIa) has been the subject of great debate in the last decade. One major challenge inevitably met when trying to infer…
A metric space for type Ia supernova spectra
Michele Sasdelli, W. Hillebrandt, G. Aldering +43
We develop a new framework for use in exploring Type Ia Supernova (SN Ia) spectra. Combining Principal Component Analysis (PCA) and Partial Least Square analysis (PLS) we are able…
Abundance stratification in Type Ia Supernovae - IV: the luminous, peculiar SN 1991T
Michele Sasdelli, Paolo A. Mazzali, Elena Pian +4
The abundance distribution of the elements in the ejecta of the peculiar, luminous Type Ia supernova (SN Ia) 1991T is obtained modelling spectra from before maximum light until a y…