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- W4363676314 abstract "Since the late 20th century, young star-forming dwarf galaxies with extremely low heavy-element abundances have been identified in the local universecite{1972ApJ...173...25S, 1990Natur.343..238I, 2022ApJS..262....3N}. Such a population of galaxies, represented by SBS 0335-052E, is intensively studied as a laboratory of galaxy formation, and interpreted as galaxies with hard emission and energetic outflows driven by massive starscite{1990Natur.343..238I, 2004ApJ...606..213T, 2009AA...503...61I}. Here we report the temporal flux variability of SBS 0335-052E in $3-4 mu$m bands on timescale of months to years with dimming and brightening up to 50% over 12 years. This is a clear signature of dust torus emission of an active massive black hole in SBS 0335-052E. The deep optical spectrum reveals a very broad component with $1.24 (pm 0.01) times 10^{4}$ km s$^{-1}$ in H$alpha$ emission, suggesting emission originated from broad line regions around the massive black hole. The black hole mass is estimated to be $sim 100$ thousand solar masses from the spectral energy distribution. This is the first example of the massive black hole existence in a long-considered young star-forming dwarf galaxy." @default.
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- W4363676314 date "2023-04-07" @default.
- W4363676314 modified "2023-10-16" @default.
- W4363676314 title "Active Massive Black Hole Found in the Young Star-Forming Dwarf Galaxy SBS 0335-052E" @default.
- W4363676314 doi "https://doi.org/10.48550/arxiv.2304.03726" @default.
- W4363676314 hasPublicationYear "2023" @default.
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