Search Results - "Rest, Armin"
-
1
The Pantheon+ Analysis: Cosmological Constraints
Published in The Astrophysical journal (01-10-2022)“…Abstract We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia)…”
Get full text
Journal Article -
2
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…”
Get full text
Journal Article -
3
Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
Published in The Astrophysical journal (01-08-2009)Get full text
Journal Article -
4
The Origins of Calcium-rich Supernovae From Disruptions of CO White Dwarfs by Hybrid He–CO White Dwarfs
Published in The Astrophysical journal (01-02-2023)“…Abstract Calcium-rich explosions are very faint ( M B ∼ −15.5), type I supernovae (SNe) showing strong Ca lines, mostly observed in old stellar environments…”
Get full text
Journal Article -
5
First Sample of Hα+[O iii]λ5007 Line Emitters at z > 6 Through JWST/NIRCam Slitless Spectroscopy: Physical Properties and Line-luminosity Functions
Published in The Astrophysical journal (01-08-2023)“…Abstract We present a sample of four emission-line galaxies at z = 6.11–6.35 that were serendipitously discovered using the commissioning data for the James…”
Get full text
Journal Article -
6
A Luminous Red Supergiant and Dusty Long-period Variable Progenitor for SN 2023ixf
Published in Astrophysical journal. Letters (01-08-2023)“…Abstract We analyze pre-explosion near- and mid-infrared (IR) imaging of the site of SN 2023ixf in the nearby spiral galaxy M101 and characterize the candidate…”
Get full text
Journal Article -
7
Updated Photometry of the Yellow Supergiant Progenitor and Late-time Observations of the Type IIb Supernova SN 2016gkg
Published in The Astrophysical journal (01-09-2022)“…Abstract We present Hubble Space Telescope (HST) observations of the Type IIb supernova (SN) SN 2016gkg at 652, 1698, and 1795 days from explosion with the…”
Get full text
Journal Article -
8
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…”
Get full text
Journal Article -
9
A Comprehensive Investigation of Gamma-Ray Burst Afterglows Detected by TESS
Published in The Astrophysical journal (01-03-2024)“…Abstract Gamma-ray bursts produce afterglows that can be observed across the electromagnetic spectrum and can provide insight into the nature of their…”
Get full text
Journal Article -
10
CfA3: 185 Type Ia Supernova Light Curves from the CfA
Published in The Astrophysical journal (20-07-2009)Get full text
Journal Article -
11
Ca hnk: The Calcium-rich Transient Supernova 2016hnk from a Helium Shell Detonation of a Sub-Chandrasekhar White Dwarf
Published in The Astrophysical journal (01-06-2020)“…We present observations and modeling of SN 2016hnk, a Ca-rich supernova (SN) that is consistent with being the result of a He-shell double-detonation explosion…”
Get full text
Journal Article -
12
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…”
Get full text
Journal Article -
13
A Wide View of the Galactic Globular Cluster NGC 2808: Red Giant and Horizontal Branch Star Spatial Distributions
Published in The Astronomical journal (01-07-2023)“…Abstract Wide-field and deep DECam multiband photometry, combined with HST data for the core of the Galactic globular cluster NGC 2808, allowed us to study the…”
Get full text
Journal Article -
14
A JWST Near- and Mid-infrared Nebular Spectrum of the Type Ia Supernova 2021aefx
Published in Astrophysical journal. Letters (01-02-2023)“…Abstract We present JWST near-infrared (NIR) and mid-infrared (MIR) spectroscopic observations of the nearby normal Type Ia supernova (SN) SN 2021aefx in the…”
Get full text
Journal Article -
15
The Dark Energy Camera Magellanic Clouds Emission-line Survey
Published in The Astrophysical journal (01-10-2024)“…Abstract We have used the Dark Energy Camera (DECam) on the CTIO Blanco 4 m telescope to perform a new emission-line survey of the Large Magellanic Cloud (LMC)…”
Get full text
Journal Article -
16
Ground-based and JWST Observations of SN 2022pul. I. Unusual Signatures of Carbon, Oxygen, and Circumstellar Interaction in a Peculiar Type Ia Supernova
Published in The Astrophysical journal (01-01-2024)“…Abstract Nebular-phase observations of peculiar Type Ia supernovae (SNe Ia) provide important constraints on progenitor scenarios and explosion dynamics for…”
Get full text
Journal Article -
17
Ground-based and JWST Observations of SN 2022pul. II. Evidence from Nebular Spectroscopy for a Violent Merger in a Peculiar Type Ia Supernova
Published in The Astrophysical journal (01-05-2024)“…Abstract We present an analysis of ground-based and JWST observations of SN 2022pul, a peculiar “03fg-like” (or “super-Chandrasekhar”) Type Ia supernova (SN…”
Get full text
Journal Article -
18
Relative Intrinsic Scatter in Hierarchical Type Ia Supernova Sibling Analyses: Application to SNe 2021hpr, 1997bq, and 2008fv in NGC 3147
Published in The Astrophysical journal (01-10-2023)“…Abstract We present Young Supernova Experiment grizy photometry of SN 2021hpr, the third Type Ia supernova sibling to explode in the Cepheid calibrator galaxy,…”
Get full text
Journal Article -
19
All-sky Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories: The Complete Sample
Published in The Astrophysical journal (01-07-2023)“…Abstract Hot DA white dwarfs (DAWDs) have fully radiative pure hydrogen atmospheres that are the least complicated to model. Pulsationally stable, they are…”
Get full text
Journal Article -
20
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…”
Get full text
Journal Article