Bibcode
Huertas-Company, M.; Aguerri, J. A. L.; Bernardi, M.; Mei, S.; Sánchez-Almeida, J.
Bibliographical reference
Highlights of Spanish Astrophysics VI, Proceedings of the IX Scientific Meeting of the Spanish Astronomical Society (SEA), held in Madrid, September 13 - 17, 2010, Eds.: M. R. Zapatero Osorio, J. Gorgas, J. Maíz Apellániz, J. R. Pardo, and A. Gil de Paz., p. 210-215
Advertised on:
11
2011
Citations
0
Refereed citations
0
Description
We present an automated morphological classification in 4 types (E, S0,
Sab, Scd) of ˜ 700,000 galaxies from the SDSS DR7 spectroscopic
sample based on support vector machines. The main new property of the
classification is that we associate a probability to each galaxy of
being in the four morphological classes instead of assigning a single
class. The classification is therefore better adapted to nature where we
expect a continuous transition between different morphological types.
The algorithm is trained with a visual classification and then compared
to several independent visual classifications including the Galaxy Zoo
first-release catalog. We find a very good correlation between the
automated classification and classical visual ones. The compiled catalog
is intended for use in different applications and is therefore publicly
available through a dedicated webpage
(http://gepicom04.obspm.fr/sdss_morphology/Morphology_2010.html)