Franklin Chapman

ORCID: 0009-0003-9699-1063
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About
Contact & Profiles
Research Areas
  • Stellar, planetary, and galactic studies
  • Astronomy and Astrophysical Research
  • Gamma-ray bursts and supernovae
  • Historical Studies on Spain
  • Geology and Paleoclimatology Research
  • Pulsars and Gravitational Waves Research
  • Astrophysics and Cosmic Phenomena
  • Maritime and Coastal Archaeology
  • Astrophysical Phenomena and Observations
  • Astro and Planetary Science
  • Astrophysics and Star Formation Studies
  • Galaxies: Formation, Evolution, Phenomena

University of Wyoming
2024

Abstract We report first-time reverberation-mapping results for 14 active galactic nuclei (AGNs) from the ongoing Monitoring AGNs with H β Asymmetry campaign (MAHA). These utilize optical spectra obtained Long Slit Spectrograph on Wyoming Infrared 2.3 m Telescope between 2017 November and 2023 May. MAHA combines long-duration monitoring high cadence. multiple observing seasons nine of objects. include time lags, supermassive black hole masses, velocity-resolved lags. The lags allow us to...

10.3847/1538-4365/ad3bad article EN cc-by The Astrophysical Journal Supplement Series 2024-05-17

Abstract Transiting giant exoplanets around M-dwarf stars (GEMS) are rare, owing to the low-mass host stars. However, all-sky coverage of TESS has enabled detection an increasingly large number them enable statistical surveys like Searching for GEMS survey. As part this endeavor, we describe observations six transiting planets, which include precise mass measurements two (K2-419Ab, TOI-6034b) and validation four systems, includes upper limits three (TOI-5218b, TOI-5616b, TOI-5634Ab), while...

10.3847/1538-3881/ad7796 article EN cc-by The Astronomical Journal 2024-11-04

We report first-time reverberation mapping results for 14 AGNs from the ongoing Monitoring with H$\beta$ Asymmetry campaign (MAHA). These utilize optical spectra obtained Long Slit Spectrograph on Wyoming Infrared 2.3m Telescope between 2017 November-2023 May. MAHA combines long-duration monitoring high cadence. multiple observing seasons 9 of objects. include time lags, supermassive black hole masses, and velocity-resolved lags. The lags allow us to investigate kinematics broad-line region.

10.48550/arxiv.2404.07343 preprint EN arXiv (Cornell University) 2024-04-10

Transiting giant exoplanets around M-dwarf stars (GEMS) are rare, owing to the low-mass host stars. However, all-sky coverage of TESS has enabled detection an increasingly large number them enable statistical surveys like \textit{Searching for GEMS} survey. As part this endeavour, we describe observations six transiting planets, which includes precise mass measurements two GEMS (K2-419Ab, TOI-6034b) and validation four systems, upper limits three (TOI-5218b, TOI-5616b, TOI-5634Ab), while...

10.48550/arxiv.2408.14694 preprint EN arXiv (Cornell University) 2024-08-26
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