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A Nascent Tidal Dwarf Galaxy Forming within the Northern HI Streamer of M82
Imad Pasha, Deborah Lokhorst, Pieter G. van Dokkum +12
We identify a 600 pc-wide region of active star formation located within a tidal streamer of M82 via emission ( erg s cm), us…
NGC5846-UDG1: A galaxy formed mostly by star formation in massive, extremely dense clumps of gas
Shany Danieli, Pieter van Dokkum, Sebastian Trujillo-Gomez +10
It has been shown that ultra-diffuse galaxies (UDGs) have higher specific frequencies of globular clusters on average than other dwarf galaxies with similar luminosities. The UDG N…
A Method To Characterize the Wide-Angle Point Spread Function of Astronomical Images
Qing Liu, Roberto Abraham, Colleen Gilhuly +14
Uncertainty in the wide-angle Point Spread Function (PSF) at large angles (tens of arcseconds and beyond) is one of the dominant sources of error in a number of important quantitie…
ArtPop: A Stellar Population and Image Simulation Python Package
Johnny P. Greco, Shany Danieli
We present Artificial Stellar Populations (ArtPop), an open-source Python package for synthesizing stellar populations and generating artificial images of fully populated stellar s…
The Intrinsic Shapes of Low Surface Brightness Galaxies: a Discriminant of LSBG Formation Mechanisms
Erin Kado-Fong, Mihai Petrescu, Majid Mohammad +8
We use the low surface brightness galaxy (LSBG) samples created from the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP, 781 galaxies), the Dark Energy Survey (DES, 20977 gala…
A recently quenched isolated dwarf galaxy outside of the Local Group environment
Ava Polzin, Pieter van Dokkum, Shany Danieli +2
We report the serendipitous identification of a low mass (), isolated, likely quenched dwarf galaxy in the "foreground" of the COSMOS-CAN…