J/A+A/533/A25 VLT/X-shooter observations of PHL293B (Izotov+ 2011)
VLT/X-shooter observations of the low-metallicity blue compact dwarf
galaxy PHL 293B including a luminous blue variable star.
Izotov Y.I., Guseva N.G., Fricke K.J., Henkel C.
<Astron. Astrophys. 533, A25 (2011)>
=2011A&A...533A..25I 2011A&A...533A..25I
ADC_Keywords: Galaxies, spectra ; Spectra, ultraviolet ; Spectra, infrared
Keywords: galaxies: starburst - galaxies: ISM - galaxies: abundances -
stars: activity
Abstract:
We present VLT/X-shooter spectroscopic observations in the wavelength
range λλ3000-23000Å of the extremely metal-deficient
blue compact dwarf (BCD) galaxy PHL 293B containing a luminous blue
variable (LBV) star and compare them with previous data.
This BCD is one of the two lowest-metallicity galaxies where LBV stars
were detected, allowing us to study the LBV phenomenon in the
extremely low metallicity regime.
We determine abundances of nitrogen, oxygen, neon, sulfur, argon, and
iron by analyzing the fluxes of narrow components of the emission
lines using empirical methods and study the properties of the LBV from
the fluxes and widths of broad emission lines.
Description:
Fig1.dat - the flux-calibrated and redshift-corrected VLT/X-shooter
UV and optical spectrum of the low-metallicity blue compact dwarf galaxy
PHL 293B.
Fig2.dat - the flux-calibrated and redshift-corrected VLT/X-shooter
near-infrared spectrum of the low-metallicity blue compact dwarf galaxy
PHL 293B.
Objects:
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RA (2000) DE Designation(s)
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22 30 36.8 -00 06 37 PHL 293B = SDSS J223036.79-000636.9
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fig1.dat 22 64902 Flux-calibrated and redshift-corrected
VLT/X-shooter UV and optical spectrum of PHL 293B
fig2.dat 22 12591 Flux-calibrated and redshift-corrected
VLT/X-shooter near-infrared spectrum of PHL 293B
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Byte-by-byte Description of file: fig1.dat fig2.dat
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Bytes Format Units Label Explanations
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2- 8 F7.1 0.1nm lambda [3058/22550] Wavelength in Angstroem (Å)
10- 22 E13.7 mW/m2 Flux Flux at lambda
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Acknowledgements:
Yuri Izotov, izotov(at)MAO.Kiev.UA
(End) Francois Ochsenbein [CDS] 28-Jul-2011