NDLI: Investigation of the correlation between morphology and luminosity for two classes of main galaxies

Content Provider	Springer Nature Link
Author	Deng, Xin Fa Qian, Xiao Xia Luo, Cheng Hong Wu, Ping
Copyright Year	2012
Abstract	Using an apparent-magnitude limited Main galaxy sample of the Sloan Digital Sky Survey Data Release 7(SDSS DR7), we investigate the correlation between morphologies and luminosity for the Main galaxy sample. Our Main galaxy sample is divided into two classes: Main galaxies only with TARGET_GALAXY flag (bestPrimtarget = 64), and ones also with other flags. It is found that for the second class Main galaxies, the early-type proportion monotonously increases with increasing luminosity nearly in the whole luminosity region. But for the first class Main galaxies, the early-type proportion increases with increasing luminosity only within a certain luminosity region (−22.2 < M r < −19.8). In the high luminosity region (M r < −22.2), the early-type proportion of the first class Main galaxies even decreases dramatically with increasing luminosity. We also analyze the correlation between morphologies and luminosity of galaxies around the peak of the redshift distribution ( 0.07 ≤ z ≤ 0.08 ). In such a narrow redshift region, we still observe strong correlation between morphologies and luminosity, which shows that this correlation is fundamental.
Starting Page	45
Ending Page	52
Page Count	8
File Format	PDF
ISSN	05717256
Journal	Astrophysics
Volume Number	55
Issue Number	1
e-ISSN	15738191
Language	English
Publisher	Springer US
Publisher Date	2012-03-18
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	galaxies: fundamental parameters galaxies:statistics Astronomy, Astrophysics and Cosmology Extraterrestrial Physics, Space Sciences Astronomy, Observations and Techniques Astrophysics and Astroparticles
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics

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