DEMOGRAPHICS OF SLOAN DIGITAL SKY SURVEY GALAXIES ALONG THE HUBBLE SEQUENCE

作者：Oh Kyuseok^*; Choi Hyunseop; Kim Hong Geun; Moon Jun Sung; Yi Sukyoung K

来源：Astronomical Journal, 2013, 146(6): 151.

DOI：10.1088/0004-6256/146/6/151

• galaxies: elliptical and lenticular, cD
• galaxies: general
• galaxies: spiral
• galaxies: statistics
• methods: data analysis

We present the statistical properties of a volume-limited sample of 7429 nearby (z = 0.033-0.044) galaxies from the Sloan Digital Sky Survey Data Release 7. Our database includes morphology distribution as well as the structural and spectroscopic properties of each morphology type based on the recent remeasurements of spectral line strengths by Oh and collaborators. Our database does not include galaxies that are apparently smaller and flatter because morphology classification of them turned out to be difficult. Our statistics confirmed the up-to-date knowledge of galaxy populations, e.g., correlations between morphology and line strengths as well as the derived ages. We hope that this database will be useful as a reference.

• 出版日期2013-12