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Gorgas García, Francisco Javier and Jablonka, P. and Goudfrooij, P. (2007) Stellar population gradients in bulges along the Hubble sequence - I. The data. Astronomy & Astrophysics, 474 (3). pp. 1081-1092. ISSN 0004-6361
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Official URL: http://dx.doi.org/10.1051/0004-6361:20066690
Abstract
This is the first paper presenting our long-term project aimed at studying the nature of bulges through analyzing their stellar population gradients. We present deep spectroscopic observations along the minor axis and the data reduction for a sample of 32 bulges of edge-on spiral galaxies. We explain in detail our procedures for measuring their dynamical parameters (rotation curves and velocity dispersion profiles) and line-strength indices, including the conversion to the Lick/IDS system. Tables giving the values of the dynamical parameters and line-strength indices at each galactocentric radius are presented (in electronic form) for each galaxy of the sample. The derived line-strength gradients from this dataset will be analyzed in a forthcoming paper to set constraints on the different scenarios for the formation of the bulges.
Item Type: | Article |
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Additional Information: | © ESO 2007. |
Uncontrolled Keywords: | Early-type galaxies; Line-strength gradients; Dynamically hot galaxies; Spiral galaxies; Star-formation; Spectrophotometric standards; Different environments; Structural-properties; Velocity dispersions; Lenticular galaxies |
Subjects: | Sciences > Physics > Astrophysics Sciences > Physics > Astronomy |
ID Code: | 36910 |
Deposited On: | 13 Apr 2016 15:01 |
Last Modified: | 10 Dec 2018 15:05 |
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