85 citations · 218 across the 10 of their papers we have counts for
10 papers
Neutral gas heating by X-rays in primitive galaxies: Infrared observations of IZw18 with Herschel
V. Lebouteiller, D. Pequignot, D. Cormier +8
(abridged) The dominant thermal mechanisms in the neutral interstellar medium, which acts as a star-forming gas reservoir, are uncertain in extremely metal-poor galaxies. Our objec…
NGC 6302: high-ionization permitted lines. Applying X-SSN synthesis to VLT-UVES spectra
Daniel Pequignot, Christophe Morisset, Simon Casassus
A preliminary VLT-UVES spectrum of NGC 6302 (Casassus et al. 2002, MN), which hosts one of the hottest PN nuclei known (Teff ~ 220000 K; Wright et al. 2011, MN), has been recently…
Heating of blue compact dwarf galaxies: gas distribution and photoionization by stars in I Zw 18
D. Pequignot
Photoionization models so far are unable to account for the high electron temperature Te([O III]) implied by the line ratio [O III]4363A/[O III]5007A in low-metallicity blue compac…
Unravelling the chemical inhomogeneity of PNe with VLT FLAMES integral-field unit spectroscopy
Y. G. Tsamis, J. R. Walsh, D. Pequignot +3
Recent weak emission-line long-slit surveys and modelling studies of PNe have convincingly argued in favour of the existence of an unknown component in the planetary nebula plasma…
The Planetary Nebula population of the Sagittarius Dwarf Spheroidal Galaxy
Albert Zijlstra, K. Gesicki, J. R. Walsh +3
The identification of two new Planetary Nebulae in the Sagittarius Dwarf Spheroidal Galaxy (Sgr) is presented. This brings the total number to four. The first, StWr 2-21, belongs t…
Integrated spectrum of the planetary nebula NGC 7027
Y. Zhang, X. -W. Liu, S. -G. Luo +2
We present deep optical spectra of the archetypal young planetary nebula (PN) NGC 7027, covering a wavelength range from 3310 to 9160 A. The observations were carried out by unifor…