Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Vansevicius, Vladas"'
Publikováno v:
A&A 677, A100 (2023)
This work is the seventh study in a series dedicated to investigating degeneracies of simultaneous age, mass, extinction, and metallicity determinations of partially resolved or unresolved star clusters with Hubble Space Telescope broadband aperture
Externí odkaz:
http://arxiv.org/abs/2308.08250
Publikováno v:
Astronomy & Astrophysics, 2019, Volume 627, id.A7, 5 pp
Leo A is an isolated gas-rich dwarf irregular galaxy of low stellar mass and metallicity residing at the outskirts of the Local Group. Ages of the stellar populations in Leo A range from $\sim$10 Myr to $\sim$10 Gyr. So far, only one star cluster has
Externí odkaz:
http://arxiv.org/abs/1909.05934
Akademický článek
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Akademický článek
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Publikováno v:
Proc. IAU 14 (2018) 267-270
We present a new method to derive 2D star formation histories in dwarf irregular galaxies. Based on multicolor stellar photometry data we have found that in the Leo A galaxy during the last $\sim$400 Myr star formation was propagating according to th
Externí odkaz:
http://arxiv.org/abs/1810.08045
Publikováno v:
Proc. IAU 14 (2018) 99-102
We analysed a population of bright-red (BR) stars in the dwarf irregular galaxy Leo A by using multicolour photometry data obtained with the Subaru/Suprime-Cam ($B$, $V$, $R$, $I$, $H\alpha$) and HST/ACS ($F475W$ & $F814W$) instruments. In order to s
Externí odkaz:
http://arxiv.org/abs/1810.07471
This study is the third of a series that investigates the degeneracy and stochasticity problems present in the determination of physical parameters such as age, mass, extinction, and metallicity of partially resolved or unresolved star cluster popula
Externí odkaz:
http://arxiv.org/abs/1502.04839
Autor:
Mineikis, Tadas, Vansevičius, Vladas
Publikováno v:
Baltic Astronomy 23, 221 (2014)
We investigate the effects of stochasticity on the observed galaxy parameters by comparing our stochastic star formation two-dimensional (2-D) galaxy evolution models with the commonly used one-dimensional (1-D) models with smooth star formation. The
Externí odkaz:
http://arxiv.org/abs/1502.00232
Autor:
Mineikis, Tadas, Vansevičius, Vladas
Publikováno v:
Baltic Astronomy 23, 209 (2014)
We have developed a fast numerical 2-D model of galaxy disk evolution (resolved along the galaxy radius and azimuth) by adopting a scheme of parameterized stochastic self-propagating star formation. We explore the parameter space of the model and dem
Externí odkaz:
http://arxiv.org/abs/1502.00224
Publikováno v:
A&A 569, A4 (2014)
This paper is the second of a series that investigates the stochasticity and degeneracy problems that hinder the derivation of the age, mass, extinction, and metallicity of unresolved star clusters in external galaxies when broad-band photometry is u
Externí odkaz:
http://arxiv.org/abs/1407.4643