J/A+A/569/A110 GMOS-IFU spectroscopy of dwarf galaxy HS 2236+1344 (Lagos+ 2014)
On the properties of the interstellar medium in extremely metal-poor blue
compact dwarf galaxies: GMOS-IFU spectroscopy and SDSS photometry of the
double-knot galaxy HS 2236+1344.
Lagos P., Papaderos P., Gomes J.M., Smith Castelli A.V., Vega L.R.
<Astron. Astrophys. 569, A110 (2014)>
=2014A&A...569A.110L 2014A&A...569A.110L
ADC_Keywords: Galaxies, spectra ; Interstellar medium
Keywords: galaxies: individual: HS 2236+1344 - galaxies: dwarf -
galaxies: abundances - galaxies: ISM - galaxies: star formation -
galaxies: photometry
Abstract:
The main goal of this study is to carry out a spatially resolved
investigation of the warm interstellar medium (ISM) in the extremely
metal-poor blue compact dwarf galaxy HS 2236+1344. Special emphasis is
laid on the analysis of the spatial distribution of chemical
abundances, emission-line ratios and kinematics of the ISM, and to the
recent star-forming activity in this galaxy.
Description:
The observations discussed in this work were performed using the
Gemini GMOS and the IFU unit at Gemini North telescope, using the
grating R600+_G5304 (R600) in one-slit mode. The GMOS-IFU in one slit
mode composes a pattern of 500 hexagonal elements, each with a
projected diameter of 0.2-arcsec, covering a field of view (FoV) of
3.5"x5", plus 250 elements sampling the sky. The data were obtained in
two different positions across the galaxy obtaining a total 4"x8" FoV
which encompasses most of its ISM (see Fig. 1). The two data cubes
were combined into a final data cube that covers a spectral range from
∼4300Å to ∼7300Å.
Objects:
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RA (ICRS) DE Designation(s)
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22 38 31.12 +14 00 29.8 HS 2236+1344 = SDSS J223831.12+140029.7
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 108 1 Information on datacube
ifu_obs.fits 2880 7071 Gemini GMOS-IFU data cube of HS2236+1344
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 21 I2 --- Nx [20] Number of pixels along X-axis
22 A1 --- --- [x]
23- 24 I2 --- Ny [40] Number of pixels along Y-axis
25 A1 --- --- [x]
26- 29 I4 --- Nz [6363] Number of slices
31- 33 F3.1 arcsec/pix Scale [0.2] Scale of image
35- 41 F7.2 0.1nm blambda [4386.51] Lower value of wavelength interval
43- 49 F7.2 0.1nm Blambda [7329.56] Upper value of wavelength interval
51- 58 F8.6 0.1nm dlambda [0.462599] Wavelength resolution
60- 64 I5 Kibyte size [19890] Size of FITS file
66- 86 A21 --- FileName Name of FITS file
88-108 A21 --- Title Title of the file
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Acknowledgements:
Patricio Lagos, Patricio.Lagos(at)astro.up.pt,
Centro de Astrofisica da Universidade do Porto
(End) Patricio Lagos [UP], Patricia Vannier [CDS] 01-Sep-2014