A systematic survey with complete spectroscopic classification finds 13 hypervelocity D6 and LP 40-365 stars and shows that intermediate-heating evolutionary models best reproduce the observed population at birth rates of only a few percent of the Galactic SN Ia rate.
The MagE Spectrograph
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abstract
The Magellan Echellette (MagE) spectrograph is a single-object optical echellette spectrograph for the Magellan Clay telescope. MagE has been designed to have high throughput in the blue; the peak throughput is 22% at 5600 A including the telescope. The wavelength coverage includes the entire optical window (3100 A - 1 micron). The spectral resolution for a 1" slit is R~4100. MagE is a very simple spectrograph with only four moving parts, prism cross-dispersion, and a vacuum Schmidt camera. The instrument saw first light in November 2007 and is now routinely taking science observations.
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A systematic survey for hypervelocity runaways from thermonuclear supernovae
A systematic survey with complete spectroscopic classification finds 13 hypervelocity D6 and LP 40-365 stars and shows that intermediate-heating evolutionary models best reproduce the observed population at birth rates of only a few percent of the Galactic SN Ia rate.