J/A+A/606/L11       MUSE observations SBS 0335-052E              (Herenz+, 2017)

VLT/MUSE illuminates possible channels for Lyman continuum escape in the halo of SBS 0335-52E. Herenz E.C., Hayes M., Papaderos P., Cannon J.M., Bik A., Melinder J., Ostlin G. <Astron. Astrophys., 606, L11 (2017)> =2017A&A...606L..11H (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, spectra ; Optical Keywords: galaxies: starburst - galaxies: halos - galaxies: individual: SBS 0335-052E - techniques: imaging spectroscopy Abstract: We report on the discovery of ionised gas filaments in the circum-galactic halo of the extremely metal-poor compact starburst SBS 0335-052E in a 1.5h integration with the MUSE integral-field spectrograph. We detect these features in Hα and [OIII] emission down to a limiting surface-brightness of 5x10-19erg/s/cm2/arcsec2. The filaments have projected diameters of 2.1kpc and extend more than 9kpc to the north and north-west from the main stellar body. We also detect extended nebular HeII λ4686 emission that brightens towards the north-west at the rim of a starburst driven super-shell. We also present a velocity field of the ionised gas. The filaments appear to connect seamlessly in velocity space to the kinematical disturbances caused by the shell. Similar to high-z star-forming galaxies, the ionised gas in this galaxy is dispersion dominated. We argue that the filaments were created via feedback from the starburst and that these ionised structures in the halo may act as escape channels for Lyman continuum radiation in this gas-rich system. Description: We here provide fully reduced MUSE data for SBS 0335-052E. This reduction is significantly improved with respect to a standard ESO pipeline reduction, as we used an iterative process to not oversubtract emission from the extended emission line halo of this blue compact dwarf galaxy. We further provide continuum subtracted narrow-band images in Hα, [OIII], and HeII that were created from the MUSE data. Moreover, this data release also contains the line-of-sight velocity field as obtained from Ha from this galaxy. Objects: ------------------------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------------------------- 03 37 44.04 -05 02 40.2 SBS 0335-052E = SBSG 0335-052E ------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 113 5 List of fits files fits/* 0 5 Individual fits files
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000) 10- 18 F9.5 deg DEdeg Declination of center (J2000) 20- 22 F3.1 arcsec/pix scale Scale of the image 24- 26 I3 --- Nx Number of pixels along X-axis 28- 30 I3 --- Ny Number of pixels along Y-axis 32- 35 I4 --- Nz ? Number of slices for the datacube 37- 43 I7 Kibyte size Size of FITS file 45- 74 A30 --- FileName Name of FITS file, in subdirectory fits 76-113 A38 --- Title Title of the FITS file (1)
Note (1): The MUSE datacube FITS file contains 3 header-data units (HDUs): HDU 1: Header summarising basic observational parameters. HDU 2: Flux density datacube in 1*10-20erg/s/cm2/Angstrom HDU 3: Variance datacube in 1*10-40(erg/s/cm2/Angstrom)2
Acknowledgements: Edmund Christian Herenz, eherenz(at)eso.org
(End) Patricia Vannier [CDS] 26-Oct-2020
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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