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First direct dynamical detection of a dual supermassive black hole system at sub-kiloparsec separation
Karina. T. Voggel, Anil C. Seth, Holger Baumgardt +7
We investigated whether the two recently discovered nuclei in NGC7727 both host a super-massive black hole (SMBH). We used the high spatial resolution mode of the integral-field sp…
Spatially Resolving the Star Formation Histories of Three Nearby Nuclear Star Clusters
Christian H. Hannah, Anil C. Seth, Dieu D. Nguyen +4
The formation of nuclear star clusters (NSCs) remains an open question. In this work, we use spatially resolved HST/STIS spectroscopic observations of three nearby NSCs (hosted by…
Hubble Space Telescope Observations of NGC 253 Dwarf Satellites: Discovery of Three Ultra-faint Dwarf Galaxies
Burçin Mutlu-Pakdil, David J. Sand, Denija Crnojević +8
We present deep Hubble Space Telescope imaging of five faint dwarf galaxies associated with the nearby spiral NGC 253 (D3.5 Mpc). Three of these are newly discovered ultra…
The nucleation fraction of Local Volume galaxies
Nils Hoyer, Nadine Neumayer, Iskren Y. Georgiev +2
Nuclear star clusters (NSCs) are a common phenomenon in galaxy centres and are found in a vast majority of galaxies of intermediate stellar mass M. Recent invest…
Resolved Dwarf Galaxy Searches within ~5 Mpc with the Vera Rubin Observatory and Subaru Hyper Suprime-Cam
Burçin Mutlu-Pakdil, David J. Sand, Denija Crnojević +7
We present a preview of the faint dwarf galaxy discoveries that will be possible with the Vera C. Rubin Observatory and Subaru Hyper Suprime-Cam in the next decade. In this work, w…
Relics of Supermassive Black Hole Seeds: The Discovery of an Accreting Black Hole in an Optically Normal, Low Metallicity Dwarf Galaxy
Jenna M. Cann, Shobita Satyapal, Barry Rothberg +11
The detection and characterization of supermassive black holes (SMBHs) in local low mass galaxies is crucial to our understanding of the origins of SMBHs. This statement assumes th…