D. Andrew Howell

Employment

• University of California, Santa Barbara Adjunct Professor
  2008 - Present
• Las Cumbres Observatory Senior Staff Scientist
  2008 - Present

Education

Education history is unavailable.

Projects & Funding

Projects & funding information is unavailable.

Publications (498)

• JWST Nebular Spectroscopy of SN 2023qov: Circumstellar Dust Emission in a Normal Type Ia Supernova
  \apj 2026 DOI: 10.3847/1538-4357/ae9bbf
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• JWST Observations of SN 2024abup: First Detection of CO in a Broad-lined Type Ic Supernova and Constraints on r-process Nucleosynthesis
  \apjl 2026 DOI: 10.3847/2041-8213/aea6bf
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• SN 2019cqc: A Hydrogen-rich Superluminous Supernova Showing Electron-scattering Signatures
  The Astrophysical Journal 2026 DOI: 10.3847/1538-4357/ae9157
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• A Proliferated Space Architecture for Time-Domain Astrophysics
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2609.12153
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• AT 2022csn: A Photometrically Peculiar Optical/UV Tidal Disruption Event in a Type II AGN
  \apj 2026 DOI: 10.3847/1538-4357/ae9478
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• EP251023a: A fast X-ray transient featuring a magnetar-powered optical internal plateau followed by a steep decay
  åp 2026 DOI: 10.1051/0004-6361/202661547
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• Early NIR echo and the time variable mass loss history of Type IIn SN 2024kgi
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2609.25233
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• Nearby Supernova Science in the Era of High Cadence, Deep Time Domain Surveys
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2609.38304
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• SN 2022xus: bridging the gap between Type IIP and IIL supernovae
  Monalisa Dubey, Kuntal Misra, Naveen Dukiya +16 more
  \mnras 2026 DOI: 10.1093/mnras/stag1427
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• SN 2025fhm: A central-engine powered Ic-BL supernova associated with X-ray transient EP250304a
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2609.08356
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• The 91T/99aa-like Type Ia Supernova 2019vrq, Part I: Photometry, Spectroscopy, and Spectropolarimetry of a Nearly Standard Candle
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2609.31510
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• Tomography analysis of the intermediate-luminosity Type Iax SN 2024pxl
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2609.28712
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• Tip of the Red Giant Branch Distances to NGC 1316, NGC 1380, NGC 1404, and NGC 4457: A Pilot Study of a Parallel Distance Ladder Using Type Ia Supernovae in Early-type Host Galaxies
  The Astrophysical Journal 2026 DOI: 10.3847/1538-4357/ae8090
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• AT 2016blu: Accretion-Powered Outbursts in a Luminous Blue Variable and Compact Object Binary
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2608.20469
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• EP250827b/SN 2025wkm: An X-Ray Flash-supernova Powered by a Central Engine and Circumstellar Interaction
  \apjl 2026 DOI: 10.3847/2041-8213/ae7a68
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• JWST Spectroscopy of Type Ia Supernova 2025rbs from Maximum Light to the Nebular Phase
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2608.10451
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• No Evidence for Nearby Circumstellar Material in the Type Ia Supernova 2025rbs
  arXiv e-prints 2026 DOI: 10.48550/arXiv.2608.13655
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• SN 2020bij and a Possible Slow-rise High-velocity Subclass of Type IIP Supernovae
  \apj 2026 DOI: 10.3847/1538-4357/ae8772
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• SN 2021ukt: A Transitional Supernova with a Short Plateau and Persistent Interaction
  \apj 2026 DOI: 10.3847/1538-4357/ae89a8
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• Spectral Diversity in Type Ibn Supernovae and the Large Host Offset of SN 2024acyl
  \apj 2026 DOI: 10.3847/1538-4357/ae8854
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