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J/A+A/604/A101        MUSE datacube of He 2-10                   (Cresci+, 2017)

The MUSE view of He 2-10: No AGN ionization but a sparkling starburst. Cresci G, Vanzi L., Telles E., Lanzuisi G., Brusa M., Mingozzi M., Sauvage M., Johnson K. <Astron. Astrophys. 604, A101 (2017)> =2017A&A...604A.101C (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, spectra ; Spectra, infrared Keywords: galaxies: dwarf - galaxies: individual: He 2-10 - galaxies: ISM - galaxies: starburst - techniques: imaging spectroscopy - ISM: jets and outflows Abstract: We study the physical and dynamical properties of the ionized gas in the prototypical HII galaxy Henize 2-10 using MUSE integral field spectroscopy. The large-scale dynamics are dominated by extended outflowing bubbles that are probably the result of massive gas ejection from the central star forming regions. We derived a mass outflow rate dMout/dt∼0.30M/yr, corresponding to mass loading factor η∼0.4, in the range of similar measurements in local LIRGs. Such a massive outflow has a total kinetic energy that is sustainable by the stellar winds and supernova remnants expected in the galaxy. We studied the dust extinction, electron density, and ionization conditions all across the galaxy with a classical emission line diagnostic, confirming the extreme nature of the highly star forming knots in the core of the galaxy, which show high density and high ionization parameters. We measured the gas-phase metallicity in the galaxy, taking the strong variation of the ionization parameter into account, and found that the external parts of the galaxy have abundances as low as 12+log(O/H)∼8.3, while the central star forming knots are highly enriched with super solar metallicity. We found no sign of AGN ionization in the galaxy, despite the recent claim of the presence of a supermassive active black hole in the core of He 2-10. We therefore reanalyzed the X-ray data that were used to propose the presence of the AGN, but we concluded that the observed X-ray emission can be better explained with sources of a different nature, such as a supernova remnant. Description: MUSE pipeline reduced datacube of He2-10. Objects: --------------------------------------------------- RA (2000) DE Designation(s) --------------------------------------------------- 08 36 15.19 -26 24 33.7 Hen 2-10 = LEDA 24175 --------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 103 1 Information of fits datacube cube_He2-10.fits 2880 1076611 MUSE datacube
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 pixels along Z-axis 37- 43 F7.2 0.1nm blambda Lower value of wavelength interval 45- 51 F7.2 0.1nm Blambda Upper value of wavelength interval 53- 56 F4.2 0.1nm dlambda Wavelength resolution 58- 64 I7 Kibyte size Size of FITS file 66- 81 A16 --- FileName Name of FITS file 83-103 A21 --- Title Title of the FITS file
Acknowledgements: Giovanni Cresci, gcresci(at)arcetri.astro.it
(End) Giovanni Cresci [INAF, Arcetri], Patricia Vannier [CDS] 10-May-2017
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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