A previously undetected stellar stream in the halo of NGC 55 is discovered and characterized, with multi-wavelength evidence linking it to a past merger or tidal disruption event.
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5 Pith papers cite this work, alongside 72 external citations. Polarity classification is still indexing.
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Stellar stream curvature constrains dark matter halo axis ratios and orientations in external galaxies, with some streams excluding broad ranges of flattenings while all support spherical halos for fixed flattening directions.
A candidate ultra-diffuse galaxy, Zangetsu, found in HSC COSMOS images is unusually elongated, quiescent, apparently isolated, and an extreme size outlier.
A deep survey of 170 brightest cluster galaxies finds 71% have single-Sersic light profiles, 29% need two components, and BCG+ICL scaling relations are steeper than those of normal ellipticals.
SSL model detects galaxy interaction signatures with recall 0.86 and low contamination while CAS at A>0.35 has recall 0.20 but higher precision, benchmarked on visual classification of 25.1% disturbed fraction.
citing papers explorer
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Discovery, Characterization, and Potential Origins of a Stream in the Stellar Halo of Nearby LMC-Mass Galaxy NGC 55
A previously undetected stellar stream in the halo of NGC 55 is discovered and characterized, with multi-wavelength evidence linking it to a past merger or tidal disruption event.
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Potamides: Mapping Dark Matter Halo Shapes from Stellar Stream Tracks in the Local Universe
Stellar stream curvature constrains dark matter halo axis ratios and orientations in external galaxies, with some streams excluding broad ranges of flattenings while all support spherical halos for fixed flattening directions.
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Zangetsu: A Candidate of Isolated, Quiescent, and Backsplash Ultra-Diffuse Galaxy in the COSMOS Field
A candidate ultra-diffuse galaxy, Zangetsu, found in HSC COSMOS images is unusually elongated, quiescent, apparently isolated, and an extreme size outlier.
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Structure of Brightest Cluster Galaxies and Intracluster Light
A deep survey of 170 brightest cluster galaxies finds 71% have single-Sersic light profiles, 29% need two components, and BCG+ICL scaling relations are steeper than those of normal ellipticals.
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Comparison and verification methods to trace interaction-driven disturbances in galaxies
SSL model detects galaxy interaction signatures with recall 0.86 and low contamination while CAS at A>0.35 has recall 0.20 but higher precision, benchmarked on visual classification of 25.1% disturbed fraction.