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Author
dc.contributor.author
Shimasaku, K 
Author
dc.contributor.author
Fukugita, M 
Author
dc.contributor.author
Doi, M 
Author
dc.contributor.author
Hamabe, M 
Author
dc.contributor.author
Ichikawa, T 
Author
dc.contributor.author
Okamura, S 
Author
dc.contributor.author
Sekiguchi, M 
Author
dc.contributor.author
Yasuda, N 
Author
dc.contributor.author
Brinkmann, J 
Author
dc.contributor.author
Csabai, I 
Availability Date
dc.date.accessioned
2020-08-08T19:59:54Z
Availability Date
dc.date.available
2020-08-08T19:59:54Z
Release
dc.date.issued
2001
uri
dc.identifier.uri
http://hdl.handle.net/10831/49185
Abstract
dc.description.abstract
We investigate the photometric properties of 456 bright galaxies using imaging data recorded during the commissioning phase of the Sloan Digital Sky Survey (SDSS). Morphological classification is carried out by correlating results of several human classifiers. Our purpose is to examine the statistical properties of color indices, scale lengths, and concentration indices as functions of morphology for the SDSS photometric system. We find that u'-g', g'-r', and r'-i' colors of SDSS galaxies match well with those expected from the synthetic calculation of spectroscopic energy distribution of template galaxies and with those transformed from UBVRCIC color data of nearby galaxies. The agreement is somewhat poor, however, for the i'-z' color band, with a discrepancy of 0.1-0.2 mag. With the aid of the relation between surface brightness and radius obtained by Kent in 1985, we estimate the averages of the effective radius of early-type galaxies and the scale length of exponential disks both to be 2.6 kpc for L* galaxies. We find that the half-light radius of galaxies depends slightly on the color bands, consistent with the expected distribution of star-forming regions for late-type galaxies and with the known color gradient for early-type galaxies. We also show that the (inverse) concentration index, defined by the ratio of the half-light Petrosian radius to the 90% light Petrosian radius, correlates tightly with the morphological type; this index allows us to classify galaxies into early (E/S0) and late (spiral and irregular) types, allowing for a 15%-20% contamination from the opposite class compared with eye-classified morphology.
Language
dc.language
Angol
Title
dc.title
Statistical properties of bright galaxies in the Sloan Digital Sky Survey photometric system
Type
dc.type
folyóiratcikk
Date Change
dc.date.updated
2020-06-05T10:48:38Z
Scope
dc.format.page
1238-1250
Doi ID
dc.identifier.doi
10.1086/322094
Wos ID
dc.identifier.wos
000170997700010
ID Scopus
dc.identifier.scopus
18044397376
MTMT ID
dc.identifier.mtmt
1064397
Issue Number
dc.identifier.issue
3
abbreviated journal
dc.identifier.jabbrev
ASTRON J
Journal
dc.identifier.jtitle
ASTRONOMICAL JOURNAL
Volume Number
dc.identifier.volume
122
Release Date
dc.description.issuedate
2001
department of Author
dc.contributor.institution
Eötvös Gravity Research Group
department of Author
dc.contributor.institution
Atomfizikai Tanszék
department of Author
dc.contributor.institution
Komplex Rendszerek Fizikája Tanszék
Author institution
dc.contributor.department
Komplex Rendszerek Fizikája Tanszék


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Statistical properties of bright galaxies in the Sloan Digital Sky Survey photometric system
 

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