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Faint Jewels: Discovering The Brilliance of Dwarf Galaxies

27 Jul 2020, 14:00 UTC
Faint Jewels: Discovering The Brilliance of Dwarf Galaxies
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Paper Title: Hidden AGN in dwarf galaxies revealed by MaNGA: light echoes, off-nuclear wanderers, and a new broad-line AGNAuthors: Mar Mezcua and Helena Domínguez SánchezFirst Author’s Institution: Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Magrans, 08193 Barcelona, Spain; Institut d’Estudis Espacials de Catalunya (IEEC), Carrer Gran Capità, 08034 Barcelona, SpainStatus: Published in ApJ. Open access on arXivBeneath the radiant tapestry of massive galaxies that thread our universe, lesser-known cosmic entities lurk – dwarf galaxies. Weighing in with a stellar mass below 3 billion solar masses, these low luminosity celestial islands barely tip the scale (many individual supermassive black holes outweigh them)! Furthermore, despite being the most abundant type of galaxy in the universe, their formation and evolution are still not very well understood.Small But Mighty! Active Galactic Nuclei (AGN) glow vibrantly in the darkness of space. Fueled by the rapid accretion of matter onto compact black holes within galactic cores, they can outshine the collective starlight of their host galaxies. Additionally, their powerful outflows can heat and disperse cold molecular gas, which astronomers believe may quell star formation and regulate galactic growth. Most AGN are suspected to feature supermassive black holes (SMBHs; black holes with masses greater ...

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