D
Dylan Gregersen
Researcher at University of Utah
Publications - 8
Citations - 594
Dylan Gregersen is an academic researcher from University of Utah. The author has contributed to research in topics: Metallicity & Red-giant branch. The author has an hindex of 6, co-authored 8 publications receiving 509 citations.
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Journal ArticleDOI
The Panchromatic Hubble Andromeda Treasury X. Ultraviolet to Infrared Photometry of 117 Million Equidistant Stars
Benjamin F. Williams,Dustin Lang,Julianne J. Dalcanton,Andrew E. Dolphin,Daniel R. Weisz,Eric F. Bell,Luciana Bianchi,Eleanor Byler,Karoline M. Gilbert,Léo Girardi,Karl D. Gordon,Dylan Gregersen,L. C. Johnson,Jason S. Kalirai,Tod R. Lauer,Antonela Monachesi,Philip Rosenfield,Anil C. Seth,Evan D. Skillman +18 more
TL;DR: In the Panchromatic Hubble Andromeda Treasury (PHAT) survey as discussed by the authors, the authors measured stellar photometry with the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS) in near ultraviolet (F275W, F336W), optical (F475W), and near infrared (F110W,F160W) bands for 117 million resolved stars in M31.
Journal ArticleDOI
The panchromatic hubble andromeda treasury. x. ultraviolet to infrared photometry of 117 million equidistant stars
Benjamin F. Williams,Dustin Lang,Julianne J. Dalcanton,Andrew E. Dolphin,Daniel R. Weisz,Eric F. Bell,Luciana Bianchi,Nell Byler,Karoline M. Gilbert,Léo Girardi,Karl D. Gordon,Dylan Gregersen,L. C. Johnson,Jason S. Kalirai,Tod R. Lauer,Antonela Monachesi,Philip Rosenfield,Anil C. Seth,E. D. Skillman +18 more
TL;DR: In this paper, the authors measured stellar photometry with the Hubble Space Telescope Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACFS) in near ultraviolet (F275W, F336W), optical (F475W,F814W), and near infrared (F110W, f160W) bands for 117 million resolved stars in M31.
Journal ArticleDOI
Measuring consistent masses for 25 milky way globular clusters
Brian Kimmig,Anil C. Seth,Inese I. Ivans,Jay Strader,Nelson Caldwell,Tim Anderton,Dylan Gregersen +6 more
TL;DR: In this paper, central velocity dispersions, masses, mass-to-light ratios (M/Ls), and rotation strengths for 25 Galactic globular clusters (GCs) were derived from single order spectra taken with Hectochelle on the MMT telescope.
Journal ArticleDOI
Panchromatic hubble andromeda treasury. xii. mapping stellar metallicity distributions in m31
Dylan Gregersen,Anil C. Seth,Benjamin F. Williams,Dustin Lang,Julianne J. Dalcanton,Léo Girardi,Evan D. Skillman,Eric F. Bell,Andrew E. Dolphin,Morgan Fouesneau,Puragra Guhathakurta,Katherine M. Hamren,L. C. Johnson,Jason S. Kalirai,Alexia R. Lewis,Antonela Monachesi,Knut Olsen +16 more
TL;DR: In this article, a study of the metallicity of old red giant branch stars in the Andromeda galaxy is presented, where the authors use the Panchromatic Hubble Andromeda Treasury (PHAT) survey.
Journal ArticleDOI
Panchromatic Hubble Andromeda Treasury XII. Mapping Stellar Metallicity Distributions in M31
Dylan Gregersen,Anil C. Seth,Benjamin F. Williams,Dustin Lang,Julianne J. Dalcanton,Léo Girardi,Evan D. Skillman,Eric F. Bell,Andrew E. Dolphin,Morgan Fouesneau,Puragra Guhathakurta,Katherine M. Hamren,L. C. Johnson,Jason S. Kalirai,Alexia R. Lewis,Antonela Monachesi,Knut Olsen +16 more
TL;DR: In this article, a study of the metallicity of old red giant branch stars in the Andromeda galaxy is presented, where the authors estimate a clear gradient of $-0.020\pm0.004$ dex/kpc from the Panchromatic Hubble Andromeda Treasury (PHAT) survey.