geminiann06015 — Announcement
Does IRS-8 contain the youngest and most massive star in the Galactic Center?
31 July 2006: A team of Gemini Observatory astronomers led by Tom Geballe, and Spanish colleague Francisco Najarro (Instituto de Estructura de la Materia, Madrid), have proven that the star at the core of a spectacular cosmic bow shock near the Galactic Center is indeed an evolved massive star. It may also be the youngest, hottest and most massive star in the region of the Galactic Center. The nature of the Galactic Center source IRS-8, one of the brightest compact mid-infrared sources in the central infrared cluster, was unknown until the advent of adaptive optics (AO) imaging in the infrared. Its dimensions on the sky are roughly 1 arcsecond across, and it appeared as a fuzzy blob to observers until its surprising structure was revealed at Gemini during early AO observations in 2000. In an previous article, Geballe et al. (2004) showed that the IRS-8 bow shock would be a straightforward consequence of …