Almost Optically Dark Galaxies in DECaLS (I): Detection, Optical Properties, and Possible Origins

We report the discovery of eight optical counterparts of ALFALFA extragalactic objects from DECaLS, five of which are discovered for the first time. These objects were flagged as H i emission sources with no optical counterparts in SDSS before. Multiband data reveal their unusual physical properties...

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Bibliographic Details
Main Authors: Lin Du, Wei Du, Cheng Cheng, Ming Zhu, Haiyang Yu, Hong Wu
Format: Article
Language:English
Published: IOP Publishing 2024-01-01
Series:The Astrophysical Journal
Subjects:
Online Access:https://doi.org/10.3847/1538-4357/ad234f