Antlia Supernova Remnant in Far-ultraviolet

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

Antlia supernova remnant (l = 276.52°, b = +19.05°) was recently discovered by McCullough et al. (2002), and its angular size ( 24°) is comparable to Monogem Ring. It shows a diffuse appearance in soft X-ray, which is anti-correlated with 100 μm infrared emission and surrounded by annular enhancements in Hα. We present the far-ultraviolet view of the remnant observed with Spectroscopy of Plasma Evolution from Astrophysical Radiation (SPEAR), also known as Far-ultraviolet IMaging Spectrograph (FIMS). C IV λ and Si II emission lines were detected in the remnant region, and their emission-line maps show a rough anti-correlation with a soft X-ray map (ROSAT All Sky Survey 0.25 keV map).

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