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J/A+A/474/1081      Stellar population gradients in bulges. I    (Gorgas+, 2007)

Stellar population gradients in bulges along the Hubble sequence. I. The data. Gorgas J., Jablonka P., Goudfrooij P. <Astron. Astrophys., 474, 1081-1092 (2007)> =2007A&A...474.1081G
ADC_Keywords: Galaxies, nearby ; Galaxies, optical ; Galaxies, spectra Keywords: galaxies: bulges - galaxies: stellar content - methods: data analysis - galaxies: abundances - galaxies: evolution - galaxies: formation 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. Description: In the first dataset we list Lick/IDS line-strength indices along the galaxy radii measured in flux-calibrated spectra and at the natural resolution of the bulges (i.e. internal plus instrumental). In the second dataset we list all the indices converted to the Lick/IDS system, together with the dynamical parameters (radial velocity and velocity dispersions) at each galactocentric radius. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 87 32 Galaxy sample data1.dat 424 983 Line-strength indices in flux-calibrated spectra, not transformed to the Lick/IDS system data2.dat 480 960 Dynamical parameters and indices transformed to the Lick/IDS system
See also: J/A+A/474/763 : Stellar population gradients in bulges. II. (Jablonka+, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Galaxy Galaxy name 14- 18 A5 --- MType Morphological type 20- 23 F4.1 --- TType Hubble T type (1) 25- 29 F5.2 mag Btmag Total apparent B magnitude (1) 31- 32 I2 deg i Galaxy inclination (1) 34- 45 A12 --- Bulge Bulge type, from Lutticke et al. (2000, Cat. J/A+AS/145/405) 47- 57 A11 --- Env Environment 59- 61 A3 --- Run Run number(s) in which each galaxy was observed 63- 65 I3 deg PA Position angle along the slit 67- 71 I5 s ExpTime Total exposure time 73- 76 F4.1 arcsec reff Effective radius of the bulge, computed as explained in Sect. 4 78- 81 F4.1 arcsec e_reff rms uncertainty on reff 83- 87 F5.1 km/s Vmax ? Maximum rotational velocity along the disk major axis, corrected from inclination when necessary (1)
Note (1): Data have been taken from HyperLeda (http://leda.univ-lyon1.fr/)
Byte-by-byte Description of file: data1.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Galaxy Galaxy Name 12- 17 I6 km/s Sigma0 Velocity dispersion of the spectra (1) 18- 24 F7.1 arcsec Rad [-116/62] Distance to the galaxy center 25- 32 F8.3 0.1nm HdA ? HdeltaA index value 33- 40 F8.3 0.1nm e_HdA ? Uncertainty of HdeltaA index value 41- 48 F8.3 0.1nm HdF ? HdeltaF index value 49- 56 F8.3 0.1nm e_HdF ? Uncertainty of HdeltaF index value 57- 64 F8.3 mag CN1 ? CN1 index value 65- 72 F8.3 mag e_CN1 ? Uncertainty of CN1 index value 73- 80 F8.3 mag CN2 ? CN2 index value 81- 88 F8.3 mag e_CN2 ? Uncertainty of CN2 index value 89- 96 F8.3 0.1nm Ca4227 ? Ca4227 index value 97-104 F8.3 0.1nm e_Ca4227 ? Uncertainty of Ca4227 index value 105-112 F8.3 0.1nm G4300 ? G4300 index value 113-120 F8.3 0.1nm e_G4300 ? Uncertainty of G4300 index value 121-128 F8.3 0.1nm HgA ? HGammaA index value 129-136 F8.3 0.1nm e_HgA ? Uncertainty of HGammaA index value 137-144 F8.3 0.1nm HgF ? HgammaF index value 145-152 F8.3 0.1nm e_HgF ? Uncertainty of HgammaF index value 153-160 F8.3 0.1nm Fe4383 ? Fe4383 index value 161-168 F8.3 0.1nm e_Fe4383 ? Uncertainty of Fe4383 index value 169-176 F8.3 0.1nm Ca4455 ? Ca4455 index value 177-184 F8.3 0.1nm e_Ca4455 ? Uncertainty of Ca4455 index value 185-192 F8.3 0.1nm Fe4531 ? Fe4531 index value 193-200 F8.3 0.1nm e_Fe4531 ? Uncertainty of Fe4531 index value 201-208 F8.3 0.1nm C4668 ? C4668 index value 209-216 F8.3 0.1nm e_C4668 ? Uncertainty of C4668 index value 217-224 F8.3 0.1nm HB4861 ? HB4861 index value 225-232 F8.3 0.1nm e_HB4861 ? Uncertainty of HB4861 index value 233-240 F8.3 0.1nm Fe5015 ? Fe5015 index value 241-248 F8.3 0.1nm e_Fe5015 ? Uncertainty of Fe5015 index value 249-256 F8.3 mag Mg1 ? Mg1 index value 257-264 F8.3 mag e_Mg1 ? Uncertainty of Mg1 index value 265-272 F8.3 mag Mg2 ? Mg2 index value 273-280 F8.3 mag e_Mg2 ? Uncertainty of Mg2 index value 281-288 F8.3 0.1nm Mgb ? Mgb index value 289-296 F8.3 0.1nm e_Mgb ? Uncertainty of Mgb index value 297-304 F8.3 0.1nm Fe5270 ? Fe5270 index value 305-312 F8.3 0.1nm e_Fe5270 ? Uncertainty of Fe5270 index value 313-320 F8.3 0.1nm Fe5335 ? Fe5335 index value 321-328 F8.3 0.1nm e_Fe5335 ? Uncertainty of Fe5335 index value 329-336 F8.3 0.1nm Fe5406 ? Fe5406 index value 337-344 F8.3 0.1nm e_Fe5406 ? Uncertainty of Fe5406 index value 345-352 F8.3 0.1nm Fe5709 ? Fe5709 index value 353-360 F8.3 0.1nm e_Fe5709 ? Uncertainty of Fe5709 index value 361-368 F8.3 0.1nm Fe5782 ? Fe5782 index value 369-376 F8.3 0.1nm e_Fe5782 ? Uncertainty of Fe5782 index value 377-384 F8.3 0.1nm Na5895 ? Na5895 index value 385-392 F8.3 0.1nm e_Na5895 ? Uncertainty of Na5895 index value 393-400 F8.3 mag TiO1 ? TiO1 index value 401-408 F8.3 mag e_TiO1 ? Uncertainty of TiO1 index value 409-416 F8.3 mag TiO2 ? TiO2 index value 417-424 F8.3 mag e_TiO2 ? Uncertainty of TiO2 index value
Note (1): This indicates the velocity dispersion at which the indices have been measured
Byte-by-byte Description of file: data2.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Galaxy Galaxy Name 12- 17 F6.1 arcsec Rad [-62/62] Distance to the galaxy center 18- 25 F8.3 --- Gamma ? Relative line-strength parameter 26- 33 F8.3 --- e_Gamma ? Uncertainty on relative line-strength 34- 42 F9.1 km/s RV ? Radial velocity 43- 49 F7.1 km/s e_RV ? Uncertainty of radial velocity 50- 57 F8.1 km/s Sigma ? Velocity dispersion 58- 64 F7.1 km/s e_Sigma ? Uncertainty of velocity dispersion 65- 72 F8.3 0.1nm HdA ? HdeltaA index value 73- 80 F8.3 0.1nm e_HdA ? Uncertainty of HdeltaA index value 81- 88 F8.3 0.1nm HdF ? HdeltaF index value 89- 96 F8.3 0.1nm e_HdF ? Uncertainty of HdeltaF index value 97-104 F8.3 mag CN1 ? CN1 index value 105-112 F8.3 mag e_CN1 ? Uncertainty of CN1 index value 113-120 F8.3 mag CN2 ? CN2 index value 121-128 F8.3 mag e_CN2 ? Uncertainty of CN2 index value 129-136 F8.3 0.1nm Ca4227 ? Ca4227 index value 137-144 F8.3 0.1nm e_Ca4227 ? Uncertainty of Ca4227 index value 145-152 F8.3 0.1nm G4300 ? G4300 index value 153-160 F8.3 0.1nm e_G4300 ? Uncertainty of G4300 index value 161-168 F8.3 0.1nm HgA ? HGammaA index value 169-176 F8.3 0.1nm e_HgA ? Uncertainty of HGammaA index value 177-184 F8.3 0.1nm HgF ? HgammaF index value 185-192 F8.3 0.1nm e_HgF ? Uncertainty of HgammaF index value 193-200 F8.3 0.1nm Fe4383 ? Fe4383 index value 201-208 F8.3 0.1nm e_Fe4383 ? Uncertainty of Fe4383 index value 209-216 F8.3 0.1nm Ca4455 ? Ca4455 index value 217-224 F8.3 0.1nm e_Ca4455 ? Uncertainty of Ca4455 index value 225-232 F8.3 0.1nm Fe4531 ? Fe4531 index value 233-240 F8.3 0.1nm e_Fe4531 ? Uncertainty of Fe4531 index value 241-248 F8.3 0.1nm C4668 ? C4668 index value 249-256 F8.3 0.1nm e_C4668 ? Uncertainty of C4668 index value 257-264 F8.3 0.1nm HB4861 ? HB4861 index value 265-272 F8.3 0.1nm e_HB4861 ? Uncertainty of HB4861 index value 273-280 F8.3 0.1nm Fe5015 ? Fe5015 index value 281-288 F8.3 0.1nm e_Fe5015 ? Uncertainty of Fe5015 index value 289-296 F8.3 mag Mg1 ? Mg1 index value 297-304 F8.3 mag e_Mg1 ? Uncertainty of Mg1 index value 305-312 F8.3 mag Mg2 ? Mg2 index value 313-320 F8.3 mag e_Mg2 ? Uncertainty of Mg2 index value 321-328 F8.3 0.1nm Mgb ? Mgb index value 329-336 F8.3 0.1nm e_Mgb ? Uncertainty of Mgb index value 337-344 F8.3 0.1nm Fe5270 ? Fe5270 index value 345-352 F8.3 0.1nm e_Fe5270 ? Uncertainty of Fe5270 index value 353-360 F8.3 0.1nm Fe5335 ? Fe5335 index value 361-368 F8.3 0.1nm e_Fe5335 ? Uncertainty of Fe5335 index value 369-376 F8.3 0.1nm Fe5406 ? Fe5406 index value 377-384 F8.3 0.1nm e_Fe5406 ? Uncertainty of Fe5406 index value 385-392 F8.3 0.1nm Fe5709 ? Fe5709 index value 393-400 F8.3 0.1nm e_Fe5709 ? Uncertainty of Fe5709 index value 401-408 F8.3 0.1nm Fe5782 ? Fe5782 index value 409-416 F8.3 0.1nm e_Fe5782 ? Uncertainty of Fe5782 index value 417-424 F8.3 0.1nm Na5895 ? Na5895 index value 425-432 F8.3 0.1nm e_Na5895 ? Uncertainty of Na5895 index value 433-440 F8.3 mag TiO1 ? TiO1 index value 441-448 F8.3 mag e_TiO1 ? Uncertainty of TiO1 index value 449-456 F8.3 mag TiO2 ? TiO2 index value 457-464 F8.3 mag e_TiO2 ? Uncertainty of TiO2 index value 465-472 F8.3 0.1nm EW[OIII] ? OIII 5007 equivalent width 473-480 F8.3 0.1nm e_EW[OIII] ? Uncertainty of [OIII] 5007 equivalent width
Acknowledgements: Javier Gorgas, jgorgas(at)fis.ucm.es
(End) J. Gorgas [Univ. Complutense Madrid], P. Vannier [CDS] 28-Mar-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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