publication . Preprint . Article . 2013

The intrinsic shape of galaxies in SDSS/Galaxy Zoo

Rodríguez, S; Padilla, N.;
Open Access English
  • Published: 01 Jan 2013
  • Country: Chile
Abstract
By modelling the axis ratio distribution of SDSS DR8 galaxies we find the intrinsic 3D shapes of spirals and ellipticals. We use morphological information from the Galaxy Zoo project and assume a non-parametric distribution intrinsic of shapes, while taking into account dust extinction. We measure the dust extinction of the full sample of spiral galaxies and find a smaller value than previous estimations, with an edge-on extinction of $E_0 = 0.284^{+0.015}_{-0.026}$ in the SDSS r band. We also find that the distribution of minor to major axis ratio has a mean value of $ 0.267 \pm 0.009 $, slightly larger than previous estimates mainly due to the lower extinction...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Earth and Planetary Astrophysics
free text keywords: Astrophysics - Cosmology and Nongalactic Astrophysics, Space and Planetary Science, Astronomy and Astrophysics, Galaxy merger, Elliptical galaxy, Astrophysics, Interacting galaxy, Luminous infrared galaxy, Physics, Surface brightness fluctuation, Brightest cluster galaxy, Peculiar galaxy, Lenticular galaxy, Astronomy

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publication . Preprint . Article . 2013

The intrinsic shape of galaxies in SDSS/Galaxy Zoo

Rodríguez, S; Padilla, N.;