Satellite Systems In The Local Universe

안홍배

Morphology and Environment of Nearby

Galaxies

안홍배

ARCSEC Workshop 22-23, Jan 2006

SDSS KSGHiwon, 2008

Galaxy Zoo

Dwarfs:

dE, N

dE

dEpec

dEblue

Blue dwarf ellipticals

Morphology and Luminosity of dwarfs

Colors and magnitudes of dwarfs

Density distribution

CAS

CAS plus

Sersic index

Concluding RemarksMorphology is an integral property of a galaxythat reflects its formation and evolutionprocess as well as its dynamical structures.The local background density is a criticalparameter that controls the galaxy morphology.There is no difference between the dwarfirregulars and blue dwarf ellipticals except forthe apparent roundness. Thus, apparent shape does not play decisive roles in defining galaxy morphology.

In case of satellite galaxies

Ann, Park &

Choi

(2008)

Need more versatile classifier todifferentiate barred galaxies from non-barred ones and lenticulars fromellipticals.

Blue dwarf ellipticals

Blue dwarf ellipticals