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Surface Brightness Properties of LSB Galaxies with the International Liquid Mirror Telescope

Jiuyang FuDepartment of Physics and Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 , CanadaBhavya AilawadhiAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaTalat AkhunovUlugh Beg Astronomical Institute of the Uzbek Academy of Sciences , Astronomicheskaya 33 , 100052 Tashkent , UzbekistanE. F. BorraDepartment of Physics , Université Laval , 2325 , rue de l'Université , Québec , G1V 0A6 , CanadaMonalisa DubeyAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaNaveen DukiyaAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaBaldeep GrewalDepartment of Physics and Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 , CanadaPaul HicksonDepartment of Physics and Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 , CanadaBrajesh KumarAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaKuntal MisraAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaVibhore NegiAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaKumar PranshuAryabhatta Research Institute of Observational sciencES (ARIES) , Manora Peak , Nainital , 263001 , IndiaEthen SunDepartment of Physics and Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 , CanadaJean SurdejInstitute of Astrophysics and Geophysics , University of Liège , Allée du Six-Août 19c , 4000 Liège , Belgium

2024en

Ochiq kirishOlmos

ABI

Annotatsiya

Low surface brightness (LSB) galaxies make up a significant fraction of the luminosity density of the local universe. Their low surface brightness suggests a different formation and evolution process compared to more-typical high-surface-brightness galaxies. This study presents an analysis of LSB galaxies found in images obtained by the International Liquid Mirror Telescope during the observation period from October 24 to November 1, 2022. 3,092 LSB galaxies were measured and separated into blue and red LSB categories based on their g′−i′ colours. In these samples, the median effective radius is 4.7 arcsec, and the median value of the mean surface brightness within the effective radius is 26.1 mag arcsec−2. The blue LSB galaxies are slightly brighter than the red LSB galaxies. No significant difference of ellipticity was found between the blue and the red LSB galaxies.

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DOI: 10.25518/0037-9565.11924

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