TY - JOUR
T1 - Hydrogen two-photon continuum emission from the Horseshoe filament in NGC 1275
AU - Johnstone, R. M.
AU - Canning, R. E.A.
AU - Fabian, A. C.
AU - Ferland, G. J.
AU - Lykins, M.
AU - Porter, R. L.
AU - van Hoof, P. A.M.
AU - Williams, R. J.R.
PY - 2012/9/11
Y1 - 2012/9/11
N2 - Far-ultraviolet emission has been detected from a knot of Hα emission in the Horseshoe filament, far out in the NGC 1275 nebula. The flux detected relative to the brightness of the Hα line in the same spatial region is very close to that expected from hydrogen two-photon continuum emission in the particle heating model of Ferland et al. if reddening internal to the filaments is taken into account. We find no need to invoke other sources of far-ultraviolet emission such as hot stars or emission lines from Civ in intermediate-temperature gas to explain these data.
AB - Far-ultraviolet emission has been detected from a knot of Hα emission in the Horseshoe filament, far out in the NGC 1275 nebula. The flux detected relative to the brightness of the Hα line in the same spatial region is very close to that expected from hydrogen two-photon continuum emission in the particle heating model of Ferland et al. if reddening internal to the filaments is taken into account. We find no need to invoke other sources of far-ultraviolet emission such as hot stars or emission lines from Civ in intermediate-temperature gas to explain these data.
KW - Galaxies: clusters: individual: Perseus
KW - Galaxies: individual: NGC 1275
KW - Intergalactic medium
KW - Ultraviolet: ISM
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U2 - 10.1111/j.1365-2966.2012.21597.x
DO - 10.1111/j.1365-2966.2012.21597.x
M3 - Article
AN - SCOPUS:84865396824
SN - 0035-8711
VL - 425
SP - 1421
EP - 1429
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -