The age of blue LSB galaxies
E. I. Vorobyov (1,2), Yu. Shchekinov (3,4), D. Bizyaev (5,6), D., Bomans (4), R.-J. Dettmar (4); ((1) The Institute for Computational, Astrophysics, Saint Mary's Univ., Halifax, Canada, (2) The Institute of, Physics, South Federal Univ., Rostov-on-Don, Russia

TL;DR
This study uses hydrodynamic and population synthesis models to identify observational signatures that can constrain the age of blue low surface brightness galaxies, suggesting they are at least 1.5-6 billion years old.
Contribution
It introduces a combined modeling approach to estimate the ages of blue LSB galaxies using chemical and photometric indicators, providing minimum age constraints.
Findings
Blue LSB galaxies likely have a minimum age of 1.5-3 Gyr based on colors and oxygen abundance.
Equivalent widths of H-alpha suggest a larger minimum age of 5-6 Gyr.
No evidence indicates blue LSB galaxies are younger than 13 Gyr.
Abstract
(Abridged). Low metallicities, large gas-to-star mass ratios, and blue colors of most low surface brightness (LSB) galaxies imply that these systems may be younger than their high surface brightness counterparts. We seek to find observational signatures that can help to constrain the age of blue LSB galaxies. We use numerical hydrodynamic modelling to study the long-term (~13 Gyr) dynamical and chemical evolution of blue LSB galaxies adopting a sporadic scenario for star formation. Our models utilize various rates of star formation and different shapes of the initial mass function (IMF). We complement hydrodynamic modelling with population synthesis modelling to produce the integrated B-V colors and Halpha equivalent widths (EW(Ha)). We find that the mean oxygen abundances, B-V colors, EW(Ha), and the radial fluctuations in the oxygen abundance, when considered altogether, can be used…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
