108 citations · 1k across the 28 of their papers we have counts for
28 papers
Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II
N. Morrell, M. M. Phillips, G. Folatelli +57
We present the second and final release of optical spectroscopy of Type Ia Supernovae (SNe Ia) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I…
Type Ia Supernova Progenitor Properties and Their Host Galaxies
Sudeshna Chakraborty, Benjamin Sadler, Peter Hoeflich +16
We present an eigenfunction method to analyze 161 visual light curves (LCs) of Type Ia supernovae (SNe Ia) obtained by the Carnegie Supernova Project to characterize their diversit…
Carnegie Supernova Project-I and -II: Measurements of using Cepheid, TRGB, and SBF Distance Calibration to Type Ia Supernovae
Syed A. Uddin, Christopher R. Burns, Mark M. Phillips +44
We present an analysis of Type Ia Supernovae (SNe~Ia) from both the Carnegie Supernova Project~I (CSP-I) and II (CSP-II), and extend the Hubble diagram from the optical to the near…
Carnegie Supernova Project-II: Near-infrared spectral diversity and template of Type Ia Supernovae
Jing Lu, Eric Y. Hsiao, Mark M. Phillips +30
We present the largest and most homogeneous collection of near-infrared (NIR) spectra of Type Ia supernovae (SNe Ia): 339 spectra of 98 individual SNe obtained as part of the Carne…
Near-infrared and Optical Nebular-phase Spectra of Type Ia Supernovae SN 2013aa and SN 2017cbv in NGC 5643
Sahana Kumar, Eric Y. Hsiao, Chris Ashall +23
We present multi-wavelength time-series spectroscopy of SN 2013aa and SN 2017cbv, two Type Ia supernovae (SNe Ia) on the outskirts of the same host galaxy, NGC 5643. This work util…
Nebular-Phase Spectra of Type Ia Supernovae from the Las Cumbres Observatory Global Supernova Project
M. L. Graham, T. D. Kennedy, S. Kumar +17
The observed diversity in Type Ia supernovae (SNe Ia) -- the thermonuclear explosions of carbon-oxygen white dwarf stars used as cosmological standard candles -- is currently met w…
Carnegie Supernova Project-II: Near-infrared Spectroscopy of Stripped-Envelope Core-Collapse Supernovae
M. Shahbandeh, E. Y. Hsiao, C. Ashall +29
We present 75 near-infrared (NIR; 0.82.5 m) spectra of 34 stripped-envelope core-collapse supernovae (SESNe) obtained by the Carnegie Supernova Project-II (CSP-II), encompass…
Measuring an off-Center Detonation through Infrared Line Profiles: The peculiar Type Ia Supernova SN~2020qxp/ASASSN-20jq
P. Hoeflich, C. Ashall, S. Bose +17
We present and analyze a near infrared(NIR) spectrum of the under-luminous Type Ia supernova SN~2020qxp/ASASSN-20jq obtained with NIRES at the Keck Observatory 191 days after B-ban…
ASASSN-15hy: an under-luminous, red 03fg-like type Ia supernova
J. Lu, C. Ashall, E. Y. Hsiao +33
We present photometric and spectroscopic observations of the 03fg-like type Ia supernova (SN Ia) ASASSN-15hy from the ultraviolet (UV) to the near-infrared (NIR). ASASSN-15hy share…
Strong Near-Infrared Carbon Absorption in the Transitional Type Ia SN 2015bp
S. D. Wyatt, D. J. Sand, E. Y. Hsiao +20
Unburned carbon is potentially a powerful probe of Type Ia supernova (SN) explosion mechanisms. We present comprehensive optical and near-infrared (NIR) data on the "transitional"…
Optical and Near-Infrared Observations of the Nearby Type Ia Supernova 2017cbv
Lingzhi Wang, Carlos Contreras, Maokai Hu +28
Supernova (SN) 2017cbv in NGC 5643 is one of a handful of type Ia supernovae (SNe~Ia) reported to have excess blue emission at early times. This paper presents extensive $BVRIYJHK_…
LSQ13ddu: A rapidly-evolving stripped-envelope supernova with early circumstellar interaction signatures
Peter Clark, Kate Maguire, Cosimo Inserra +30
This paper describes the rapidly evolving and unusual supernova LSQ13ddu, discovered by the La Silla-QUEST survey. LSQ13ddu displayed a rapid rise of just 4.80.9 d to reach a…
Carnegie Supernova Project-II: Near-infrared Spectroscopic Diversity of Type II Supernovae
S. Davis, E. Y. Hsiao, C. Ashall +24
We present near-infrared (NIR) spectra of Type II supernovae (SNe II) from the Carnegie Supernova Project-II (CSP-II), the largest such dataset published to date. We iden…
On the Ca-strong 1991bg-like type Ia supernova 2016hnk: evidence for a Chandrasekhar-mass explosion
Lluís Galbany, Chris Ashall, Peter Hoeflich +46
We present a comprehensive dataset of optical and near-infrared photometry and spectroscopy of type~Ia supernova (SN) 2016hnk, combined with integral field spectroscopy (IFS) of it…
A new class of flares from accreting supermassive black holes
Benny Trakhtenbrot, Iair Arcavi, Claudio Ricci +26
Accreting supermassive black holes (SMBHs) can exhibit variable emission across the electromagnetic spectrum and over a broad range of timescales. The variability of active galacti…
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…
Thermonuclear Supernovae: Prospecting in the Age of Time-Domain and Multi-Wavelength Astronomy
Peter Hoeflich, Chris Ashall, Alec Fisher +6
We show how new and upcoming advances in the age of time-domain and multi-wavelength astronomy will open up a new venue to probe the diversity of SN~Ia. We discuss this in the cont…
Carnegie Supernova Project-II: The Near-infrared Spectroscopy Program
E. Y. Hsiao, M. M. Phillips, G. H. Marion +42
Shifting the focus of Type Ia supernova (SN Ia) cosmology to the near-infrared (NIR) is a promising way to significantly reduce the systematic errors, as the strategy minimizes our…
Unravelling the infrared transient VVV-WIT-06: the case for an origin in a classical nova
Dipankar P. K. Banerjee, Eric Y. Hsiao, Tiara Diamond +6
The enigmatic near-infrared transient VVV-WIT-06 underwent a large amplitude eruption of unclear origin in July 2013. Based on its lightcurve properties and late-time post-outburst…
Rigid colourings of hypergraphs and contiguity
Peter Ayre, Catherine Greenhill
We consider the problem of -colouring a -uniform random hypergraph, where , and determine the rigidity threshold. For edge densities above the rigidity threshold,…
Near-infrared spectral evolution of the Type Ia supernova 2014J in the nebular phase: implications for the progenitor system
T. R. Diamond, P. Hoeflich, E. Y. Hsiao +11
As the closest Type Ia supernova in decades, SN 2014J provides a unique opportunity for detailed investigation into observational signatures of the progenitor system and explosion…
Nebular Spectroscopy of the `Blue Bump' Type Ia Supernova 2017cbv
D. J. Sand, M. L. Graham, J. Botyánszki +17
We present nebular phase optical and near-infrared spectroscopy of the Type Ia supernova (SN) 2017cbv. The early light curves of SN~2017cbv showed a prominent blue bump in the ,…
Magneto-Hydrodynamical Effects on Nuclear Deflagration Fronts in Type Ia Supernovae
Boyan Hristov, David C. Collins, Peter Hoeflich +2
This article presents the study of the effects of magnetic fields on non-distributed nuclear burning fronts as a possible solution to a fundamental problem for the thermonuclear ex…
Light and color curve properties of type Ia supernovae: Theory vs. Observations
P. Hoeflich, E. Y. Hsiao, C. Ashall +10
We study optical light curve(LC) relations of type Ia supernovae(SNe~Ia) for their use in cosmology using high-quality photometry published by the Carnegie-Supernovae-Project (CSP-…