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An improved standardization framework for Type II-P supernovae using a hierarchical Bayesian approach
A. Holas, S. Taubenberger, C. Vogl +41
We use Type II-P supernovae (SNe II-P) observed as part of the Nearby Supernova Factory (SNfactory) experiment as standardizable candles to develop an improved standardization fram…
HOLISMOKES -- XIV. Time-delay and differential dust extinction determination with lensed type II supernova color curves
J. Grupa, S. Taubenberger, S. H. Suyu +3
The Hubble tension is one of the most relevant unsolved problems in cosmology today. Strongly gravitationally lensed transient objects, such as strongly lensed supernovae, are an i…
HOLISMOKES -- X. Comparison between neural network and semi-automated traditional modeling of strong lenses
S. Schuldt, S. H. Suyu, R. Canameras +4
Modeling of strongly gravitationally lensed galaxies is often required in order to use them as astrophysical or cosmological probes. With current and upcoming wide-field imaging su…
HOLISMOKES -- VII. Time-delay measurement of strongly lensed Type Ia supernovae using machine learning
S. Huber, S. H. Suyu, D. Ghoshdastidar +7
The Hubble constant () is one of the fundamental parameters in cosmology, but there is a heated debate around the 4 tension between the local Cepheid distance ladder and…
The Twins Embedding of Type Ia Supernovae I: The Diversity of Spectra at Maximum Light
K. Boone, G. Aldering, P. Antilogus +34
We study the spectral diversity of Type Ia supernovae (SNe Ia) at maximum light using high signal-to-noise spectrophotometry of 173 SNe Ia from the Nearby Supernova Factory. We dec…
The Twins Embedding of Type Ia Supernovae II: Improving Cosmological Distance Estimates
K. Boone, G. Aldering, P. Antilogus +34
We show how spectra of Type Ia supernovae (SNe Ia) at maximum light can be used to improve cosmological distance estimates. In a companion article, we used manifold learning to bui…
HOLISMOKES -- V. Microlensing of type II supernovae and time-delay inference through spectroscopic phase retrieval
J. Bayer, S. Huber, C. Vogl +5
We investigate strongly gravitationally lensed type II supernovae (LSNe II) for time-delay cosmography incorporating microlensing effects, which expands on previous microlensing st…
The SNEMO and SUGAR Companion Datasets
G. Aldering, P. Antilogus, C. Aragon +41
The Nearby Supernova Factory has made spectrophotometric observations of Type Ia supernovae since . This work presents an interim version of the data produced, including $210…
HOLISMOKES -- I. Highly Optimised Lensing Investigations of Supernovae, Microlensing Objects, and Kinematics of Ellipticals and Spirals
S. H. Suyu, S. Huber, R. Cañameras +10
We present the HOLISMOKES programme on strong gravitational lensing of supernovae as a probe of supernova (SN) physics and cosmology. We investigate the effects of microlensing on…
SUGAR: An improved empirical model of Type Ia Supernovae based on spectral features
P. -F. Léget, E. Gangler, F. Mondon +40
Type Ia Supernovae (SNe Ia) are widely used to measure the expansion of the Universe. Improving distance measurements of SNe Ia is one technique to better constrain the acceleratio…
H0LiCOW XIII. A 2.4% measurement of from lensed quasars: tension between early and late-Universe probes
Kenneth C. Wong, Sherry H. Suyu, Geoff C. -F. Chen +23
We present a measurement of the Hubble constant () and other cosmological parameters from a joint analysis of six gravitationally lensed quasars with measured time delays. A…
The Hubble Constant determined through an inverse distance ladder including quasar time delays and Type Ia supernovae
S. Taubenberger, S. H. Suyu, E. Komatsu +7
Context. The precise determination of the present-day expansion rate of the Universe, expressed through the Hubble constant , is one of the most pressing challenges in modern…
SNEMO: Improved Empirical Models for Type Ia Supernovae
C. Saunders, G. Aldering, P. Antilogus +39
Type Ia supernova cosmology depends on the ability to fit and standardize observations of supernova magnitudes with an empirical model. We present here a series of new models of Ty…
Strong Dependence of Type Ia Supernova Standardization on the Local Specific Star Formation Rate
M. Rigault, V. Brinnel, G. Aldering +40
As part of an on-going effort to identify, understand and correct for astrophysics biases in the standardization of Type Ia supernovae (SNIa) for cosmology, we have statistically c…
Correcting for peculiar velocities of Type Ia Supernovae in clusters of galaxies
P. -F. Léget, M. V. Pruzhinskaya, A. Ciulli +43
Type Ia Supernovae (SNe Ia) are widely used to measure the expansion of the Universe. To perform such measurements the luminosity and cosmological redshift () of the SNe Ia have…
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…
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…
Type Ia supernova bolometric light curves and ejected mass estimates from the Nearby Supernova Factory
R. Scalzo, G. Aldering, P. Antilogus +32
We present a sample of normal type Ia supernovae from the Nearby Supernova Factory dataset with spectrophotometry at sufficiently late phases to estimate the ejected mass using the…
Slowly fading super-luminous supernovae that are not pair-instability explosions
M. Nicholl, S. J. Smartt, A. Jerkstrand +57
Super-luminous supernovae that radiate more than 10^44 ergs per second at their peak luminosity have recently been discovered in faint galaxies at redshifts of 0.1-4. Some evolve s…
Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory
R. Pereira, R. C. Thomas, G. Aldering +36
We present 32 epochs of optical (3300-9700 Å) spectrophotometric observations of the nearby quintessential "normal" type Ia supernova (SN Ia) SN 2011fe in the galaxy M101, extendin…
Moderately Luminous type II Supernovae
C. Inserra, A. Pastorello, M. Turatto +10
Core-collapse Supernovae (CC-SNe) descend from progenitors more massive than about 8 Msun. Because of the young age of the progenitors, the ejecta may eventually interact with the…
The First Maximum-Light Ultraviolet through Near-Infrared Spectrum of a Type Ia Supernova
Ryan J. Foley, Markus Kromer, G. Howie Marion +21
We present the first maximum-light ultraviolet (UV) through near-infrared (NIR) Type Ia supernova (SN Ia) spectrum. This spectrum of SN 2011iv was obtained nearly simultaneously by…
Effects of Explosion Asymmetry and Viewing Angle on the Type Ia Supernova Color and Luminosity Calibration
K. Maeda, G. Leloudas, S. Taubenberger +7
Phenomenological relations exist between the peak luminosity and other observables of type Ia supernovae (SNe~Ia), that allow one to standardize their peak luminosities. However, s…
Asymmetries in the Type IIn SN2010jl
F. Patat, S. Taubenberger, S. Benetti +2
Aims: We study possible signs of asymmetry in the luminous Type IIn SN2010jl, to obtain independent information on the explosion geometry. Methods: We obtained optical linear spect…