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J/MNRAS/412/1741    Spectroscopic obs. of 3 spiral galaxies  (Scarano+, 2011)

Breaks in the radial oxygen abundance and corotation radius of three spiral galaxies. Scarano S.Jr, Lepine J.R.D., Marcon-Uchida M.M. <Mon. Not. R. Astron. Soc., 412, 1741-1754 (2011)> =2011MNRAS.412.1741S
ADC_Keywords: Galaxies, spectra ; Radial velocities ; Velocity dispersion Keywords: galaxies: abundances - galaxies: fundamental parameters - galaxies: ISM - galaxies: spiral - galaxies: star formation Abstract: The correlation between the breaks in the metallicity distribution and the corotation radius of spiral galaxies has been already advocated in the past and is predicted by a chemodynamical model of our Galaxy that effectively introduces the role of spiral arms in the star formation rate. In this work, we present photometric and spectroscopic observations made with the Gemini Telescope for three of the best candidates of spiral galaxies to have the corotation inside the optical disc: IC 0167, NGC 1042 and NGC 6907. We observed the most intense and well-distributed HII regions of these galaxies, deriving reliable galactocentric distances and oxygen abundances by applying different statistical methods. From these results, we confirm the presence of variations in the gradients of metallicity of these galaxies that are possibly correlated with the corotation resonance. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea1.dat 54 37 Information about the spectra observed for IC0167 in 2005 tablea2.dat 54 54 Information about the spectra observed for IC0167 in 2006 tablea4.dat 54 38 Information about the spectra observed for NGC1042 in 2005 tablea5.dat 54 71 Information about the spectra observed for NGC1042 in 2006 tablea7.dat 54 39 Information about the spectra observed for NGC6907 in 2005 tablea8.dat 54 61 Information about the spectra observed for NGC6907 in 2006 cross.dat 21 75 Correspondences between the slits observed in 2006 and the slits observed in 2005
Byte-by-byte Description of file: tablea[124578].dat
Bytes Format Units Label Explanations
1- 2 I2 --- Seq Sequential number within the cluster 3 A1 --- n_Seq [*] unexplained note 5- 13 F9.5 deg RAdeg Right ascension in decimal degrees (J2000) 15- 23 F9.5 deg DEdeg Declination in decimal degrees (J2000) 25- 28 F4.1 arcsec Dy Spectrum height 30- 32 I3 arcsec r Face-on polar coordinate, r 34- 37 I4 deg theta [-180/180] Face-on polar coordinate, θ 39- 44 I6 km/s Vobs ?=- Cross-correlated velocity evaluated from the observed spectra 46- 48 I3 km/s sigma ?=- Velocity dispersion 50- 51 I2 --- nus ?=- Number of lines effectively used on the calculations 53- 54 I2 --- nlin ?=- Number of lines detected
Byte-by-byte Description of file: cross.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Gal Galaxy name 9- 10 I2 --- ID06 ID number in 2006 observations table 12- 13 I2 --- ID05 ID number in 2005 observations table 14- 21 A8 --- n_ID05 Note
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 27-Oct-2011
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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