Search Results - "Bongard, S"
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HOST GALAXY PROPERTIES AND HUBBLE RESIDUALS OF TYPE Ia SUPERNOVAE FROM THE NEARBY SUPERNOVA FACTORY
Published in The Astrophysical journal (20-06-2013)“…We examine the relationship between Type Ia supernova (SN Ia) Hubble residuals and the properties of their host galaxies using a sample of 115 SNe Ia from the…”
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Nearby Supernova Factory Observations of SN 2007if: First Total Mass Measurement of a Super-Chandrasekhar-Mass Progenitor
Published in The Astrophysical journal (20-04-2010)“…We present photometric and spectroscopic observations of SN 2007if, an overluminous (M_V = -20.4), red (B-V = 0.16 at B-band maximum), slow-rising (t_rise = 24…”
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IMPROVING COSMOLOGICAL DISTANCE MEASUREMENTS USING TWIN TYPE IA SUPERNOVAE
Published in The Astrophysical journal (10-12-2015)“…ABSTRACT We introduce a method for identifying "twin" Type Ia supernovae (SNe Ia) and using them to improve distance measurements. This novel approach to SN Ia…”
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3D deconvolution of hyper-spectral astronomical data
Published in Monthly notices of the Royal Astronomical Society (01-11-2011)“…In this paper we present a general method for multichannel image restoration based on regularized χ2. We introduce separable regularizations that account for…”
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SNEMO: Improved Empirical Models for Type Ia Supernovae
Published in The Astrophysical journal (20-12-2018)“…SN Ia cosmology depends on the ability to fit and standardize observations of supernova magnitudes with an empirical model. We present here a series of new…”
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Type Ia supernova bolometric light curves and ejected mass estimates from the Nearby Supernova Factory
Published in Monthly notices of the Royal Astronomical Society (11-05-2014)“…We present a sample of normal Type Ia supernovae (SNe Ia) from the Nearby Supernova Factory data set with spectrophotometry at sufficiently late phases to…”
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The Twins Embedding of Type Ia Supernovae. II. Improving Cosmological Distance Estimates
Published in The Astrophysical journal (01-05-2021)“…Abstract 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…”
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HOST GALAXIES OF TYPE Ia SUPERNOVAE FROM THE NEARBY SUPERNOVA FACTORY
Published in The Astrophysical journal (20-06-2013)“…We present photometric and spectroscopic observations of galaxies hosting Type Ia supernovae (SNe Ia) observed by the Nearby Supernova Factory. Combining…”
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A transmission hologram for slitless spectrophotometry on a convergent telescope beam. 1. Focus and resolution
Published in Monthly notices of the Royal Astronomical Society (01-10-2021)“…ABSTRACT We report in this paper the test of a plane holographic optical element to be used as an aberration-corrected grating for a slitless spectrograph,…”
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Nearby Supernova Factory Observations of SN 2005gj: Another Type Ia Supernova in a Massive Circumstellar Envelope
Published in The Astrophysical journal (10-10-2006)“…We report Nearby Supernova Factory observations of SN 2005gj, the second confirmed case of a "hybrid" Type Ia/IIn supernova, which we interpret as the…”
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The Twins Embedding of Type Ia Supernovae. I. The Diversity of Spectra at Maximum Light
Published in The Astrophysical journal (01-05-2021)“…Abstract 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…”
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Uniform Recalibration of Common Spectrophotometry Standard Stars onto the CALSPEC System Using the SuperNova Integral Field Spectrograph
Published in The Astrophysical journal. Supplement series (01-11-2022)“…Abstract We calibrate spectrophotometric optical spectra of 32 stars commonly used as standard stars, referenced to 14 stars already on the Hubble Space…”
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13
Bump Morphology of the CMAGIC Diagram
Published in The Astrophysical journal (01-05-2023)“…Abstract We apply the color–magnitude intercept calibration method (CMAGIC) to the Nearby Supernova Factory SNe Ia spectrophotometric data set. The currently…”
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A SEARCH FOR NEW CANDIDATE SUPER-CHANDRASEKHAR-MASS TYPE Ia SUPERNOVAE IN THE NEARBY SUPERNOVA FACTORY DATA SET
Published in The Astrophysical journal (20-09-2012)“…We present optical photometry and spectroscopy of five Type Ia supernovae discovered by the Nearby Supernova Factory selected to be spectroscopic analogs of…”
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A Probabilistic Autoencoder for Type Ia Supernova Spectral Time Series
Published in The Astrophysical journal (01-08-2022)“…Abstract We construct a physically parameterized probabilistic autoencoder (PAE) to learn the intrinsic diversity of Type Ia supernovae (SNe Ia) from a sparse…”
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Type Ia Supernova Carbon Footprints
Published in The Astrophysical journal (10-12-2011)“…We present convincing evidence of unburned carbon at photospheric velocities in new observations of five Type Ia supernovae (SNe Ia) obtained by the Nearby…”
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STANDARDIZING TYPE Ia SUPERNOVA ABSOLUTE MAGNITUDES USING GAUSSIAN PROCESS DATA REGRESSION
Published in The Astrophysical journal (01-04-2013)“…We present a novel class of models for Type Ia supernova time-evolving spectral energy distributions (SEDs) and absolute magnitudes: they are each modeled as…”
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The Extinction Properties of and Distance to the Highly Reddened Type IA Supernova 2012cu
Published in The Astrophysical journal (20-02-2017)“…Correcting Type Ia Supernova brightnesses for extinction by dust has proven to be a vexing problem. Here we study the dust foreground to the highly reddened SN…”
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Design and performance of a collimated beam projector for telescope transmission measurement using a broad-band light source
Published in RAS techniques and instruments (05-01-2024)“…Abstract Type Ia supernovae are the most direct cosmological probe to study dark energy in the recent Universe, for which the photometric calibration of…”
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A metric space for Type Ia supernova spectra
Published in Monthly notices of the Royal Astronomical Society (21-02-2015)“…We develop a new framework for use in exploring Type Ia supernovae (SNe Ia) spectra. Combining principal component analysis (PCA) and partial least square…”
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