Search Results - "Gall, Christa"
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Magnified or multiply imaged? – Search strategies for gravitationally lensed supernovae in wide-field surveys
Published in Monthly notices of the Royal Astronomical Society (11-08-2019)“…ABSTRACT Strongly lensed supernovae (SNe) can be detected as multiply imaged or highly magnified transients. In order to compare the performances of these two…”
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Rapid formation of large dust grains in the luminous supernova 2010jl
Published in Nature (London) (17-07-2014)“…The formation of dust in the dense circumstellar medium of the bright supernova 2010jl is at first rapid and produces very large grains, which resist…”
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A cool and inflated progenitor candidate for the Type Ib supernova 2019yvr at 2.6 yr before explosion
Published in Monthly notices of the Royal Astronomical Society (01-06-2021)“…ABSTRACT We present Hubble Space Telescope imaging of a pre-explosion counterpart to SN 2019yvr obtained 2.6 yr before its explosion as a type Ib supernova…”
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SN 2023ixf in Messier 101: A Variable Red Supergiant as the Progenitor Candidate to a Type II Supernova
Published in Astrophysical journal. Letters (01-07-2023)“…Abstract We present preexplosion optical and infrared (IR) imaging at the site of the type II supernova (SN II) 2023ixf in Messier 101 at 6.9 Mpc. We…”
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Origin of the Strong Sodium Absorption of the Lensed Supernova 2016geu at z = 0.4
Published in The Astrophysical journal (01-09-2024)“…Abstract The origin of strong sodium absorption, which has been observed for a few nearby Type Ia supernovae (SNe Ia), remains elusive. Here we analyze two…”
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A Carbon/Oxygen-dominated Atmosphere Days after Explosion for the “Super-Chandrasekhar” Type Ia SN 2020esm
Published in The Astrophysical journal (01-03-2022)“…Abstract Seeing pristine material from the donor star in a type Ia supernova (SN Ia) explosion can reveal the nature of the binary system. In this paper, we…”
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JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition
Published in The Astrophysical journal (01-12-2023)“…Abstract JWST Near Infrared Camera (NIRCam) observations at 1.5–4.5 μ m have provided broadband and narrowband imaging of the evolving remnant of SN 1987A with…”
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Carnegie Supernova Project I and II: Measurements of H 0 Using Cepheid, Tip of the Red Giant Branch, and Surface Brightness Fluctuation Distance Calibration to Type Ia Supernovae
Published in The Astrophysical journal (01-07-2024)“…Abstract We present an analysis of Type Ia supernovae (SNe Ia) from the Carnegie Supernova Project I and II and extend the Hubble diagram from optical to…”
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9
SN 2022oqm: A Bright and Multipeaked Calcium-rich Transient
Published in The Astrophysical journal (01-09-2024)“…Abstract We present the photometric and spectroscopic evolution of SN 2022oqm, a nearby multipeaked hydrogen- and helium-weak calcium-rich transient (CaRT). SN…”
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10
SN 2023ixf in Messier 101: The Twilight Years of the Progenitor as Seen by Pan-STARRS
Published in The Astrophysical journal (01-04-2024)“…Abstract The nearby type II supernova, SN 2023ixf in M101 exhibits signatures of early time interaction with circumstellar material in the first week…”
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Flight of the Bumblebee: the Early Excess Flux of Type Ia Supernova 2023bee Revealed by TESS, Swift, and Young Supernova Experiment Observations
Published in The Astrophysical journal (01-02-2024)“…Abstract We present high-cadence ultraviolet through near-infrared observations of the Type Ia supernova (SN Ia) 2023bee at D = 32 ± 3 Mpc, finding excess flux…”
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A spectroscopic look at the gravitationally lensed Type Ia supernova 2016geu at z = 0.409
Published in Monthly notices of the Royal Astronomical Society (01-01-2018)Get full text
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13
Dynamical mass inference of galaxy clusters with neural flows
Published in Monthly notices of the Royal Astronomical Society (01-12-2020)“…ABSTRACT We present an algorithm for inferring the dynamical mass of galaxy clusters directly from their respective phase-space distributions, that is, the…”
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14
Rapid formation of large dust grains in the luminous supernova 2010j1
Published in Nature (London) (17-07-2014)“…The origin of dust in galaxies is still a mystery(1-4). The majority of the refractory elements are produced in supernova explosions, but it is unclear how and…”
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15
DUST DESTRUCTION RATES AND LIFETIMES IN THE MAGELLANIC CLOUDS
Published in The Astrophysical journal (01-02-2015)“…The dust budget in galaxies depends on the rate at which dust grains are created in different stellar sources and destroyed by interstellar shocks. Because of…”
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Final Moments. I. Precursor Emission, Envelope Inflation, and Enhanced Mass Loss Preceding the Luminous Type II Supernova 2020tlf
Published in The Astrophysical journal (01-01-2022)“…Abstract We present panchromatic observations and modeling of supernova (SN) 2020tlf, the first normal Type II-P/L SN with confirmed precursor emission, as…”
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An Early-time Optical and Ultraviolet Excess in the Type-Ic SN 2020oi
Published in The Astrophysical journal (01-01-2022)“…Abstract We present photometric and spectroscopic observations of Supernova 2020oi (SN 2020oi), a nearby (∼17 Mpc) type-Ic supernova (SN Ic) within the…”
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ON INFERRING EXTINCTION LAWS IN z ∼ 6 QUASARS AS SIGNATURES OF SUPERNOVA DUST
Published in The Astrophysical journal (10-05-2013)“…Unusual extinction curves of high-redshift QSOs have been taken as evidence that dust is primarily produced by supernovae at high redshift. In particular, the…”
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Carnegie Supernova Project I and II: Measurements of H 0 Using Cepheid, Tip of the Red Giant Branch, and Surface Brightness Fluctuation Distance Calibration to Type Ia Supernovae This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile
Published in The Astrophysical journal (17-07-2024)Get full text
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Carnegie Supernova Project I and II: Measurements of H0 Using Cepheid, Tip of the Red Giant Branch, and Surface Brightness Fluctuation Distance Calibration to Type Ia Supernovae
Published in The Astrophysical journal (01-07-2024)“…We present an analysis of Type Ia supernovae (SNe Ia) from the Carnegie Supernova Project I and II and extend the Hubble diagram from optical to near-infrared…”
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