A Complex Stellar Line-of-Sight Velocity Distribution in the Lenticular Galaxy NGC 524

Baltic astronomy

article

I. Katkov¹  I. Chilingarian²  O. Sil’chenko¹  A. Zasov¹  V. Afanasiev³ 

[1] Sternberg Astronomical Institute, Moscow State University;CDS – Observatoire de Strasbourg, CNRS UMR 7550, Universit´e de Strasbourg;Russian Academy of Sciences

关键词: galaxies;    kinematics and dynamics;    individual NGC 524;   

DOI  :  10.1515/astro-2017-0318

来源: Institute of Theoretical Physics and Astronomy

【 摘 要 】

We present a detailed study of the stellar and gaseous kinematics in the luminous early-type galaxy NGC 524, derived from the long-slit spectroscopic observations obtained with the Russian 6 m telescope and the IFU data from the SAURON survey. The stellar line-of-sight velocity distribution (LOSVD) of NGC 524 exhibits strong asymmetry. We performed a comprehensive analysis of the LOSVD using two complementary approaches by the nbursts full spectral fitting technique: (a) a non-parametric LOSVD recovery and (b) a parametric recovery of two Gaussian kinematical components having different stellar populations. We discuss the origin of the complex stellar LOSVD of NGC 524.

【 授权许可】

Unknown