The complex history of NGC 1427A revealed by its star clusters and star formation history
Katja Fahrion, Michael Hilker, Avinash Chaturvedi, Juan P. Carvajal, Thomas H. Puzia

TL;DR
This study reconstructs the star formation history of NGC 1427A using star clusters and integral-field spectroscopy, revealing multiple star formation episodes and signs of environmental interactions like ram-pressure stripping and tidal effects.
Contribution
It combines photometric and spectroscopic data of star clusters with galaxy spectra to trace the galaxy's evolutionary history and environmental influences.
Findings
Identified multiple star formation episodes at different ages.
Detected young clusters along the star formation edge.
Evidence suggests ram-pressure stripping, tidal interactions, or minor mergers.
Abstract
Star-forming low-mass galaxies in the dense environments of galaxy clusters provide opportunities to study how environmental effects such as ram-pressure stripping, tidal interactions, or galaxy mergers shape a galaxy's star formation history. We combined integral-field spectroscopic observations with the Multi Unit Spectroscopic Explorer (MUSE) and available multi-band imaging of the star-forming galaxy NGC 1427A, located near the centre of the Fornax galaxy cluster, at a distance of 20 Mpc. Our aim was to trace the evolutionary history of NGC 1427A using the star formation history reconstructed from the integrated spectra and employing star clusters as surviving tracers of past star formation episodes. We fitted the spectral energy distribution of 222 star cluster candidates using archival , and photometry to derive the ages and masses. For 58 clusters, we additionally…
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