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Date and Time of the Query: 2019-04-18 T04:47:17 PDT
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For refcode 2005A&A...430..411G:
Retrieve 227 NED objects in this reference.
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2005A&A...430..411G The structure of elliptical galaxies in the Virgo cluster. Results from the INT Wide Field Survey G. Gavazzi, A. Donati, O. Cucciati, S. Sabatini, A. Boselli, J. Davies and S. Zibetti Received 24 October 2003 / Accepted 16 September 2004 We report on a complete CCD imaging survey of 226 elliptical galaxies in the North-East quadrant of the Virgo cluster, representative of the properties of giant and dwarf elliptical galaxies in this cluster. We fit their radial light profiles with the Sersic r^1/n^ model of light distribution. We confirm the result of Graham & Guzman (2003, AJ, 125, 2936) that the apparent dichotomy between E and dE galaxies in the luminosity- <{mu}>_e_ plane no longer appears when other structural parameters are considered and can be entirely attributed to the onset of "core" galaxies at B_T_ ~ -20.5 mag. When "core" galaxies are not considered, E and dE form a unique family with n linearly increasing with the luminosity. For 90 galaxies we analyze the B-I color indices, both in the nuclear and in the outer regions. Both indices are bluer toward fainter luminosities. We find also that the outer color gradients do not show any significant correlation with the luminosity. The scatter in all color indicators increases significantly toward lower luminosities, e.g. galaxies fainter than B_T_ ~ -15 have a B-I spread > 0.5 mag. Keywords: galaxies: elliptical and lenticular, cD, galaxies: fundamental parameters, galaxies: clusters: individual: Virgo
Retrieve 227 NED objects in this reference.
Please click here for ADS abstract

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