Ionized Tails from Supergiants at the Galactic Center

Details Ionized Tails from Supergiants at the Galactic Center Ionized Tails from Supergiants at the Galactic Center

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7250s&link_type=abstract

HST Proposal ID #7250

Physics

Hst Proposal Id #7250 Cool Stars

Scientific paper

The strong UV field at the Galactic Center is capable of ionizing the winds from late-type supergiants. An ionized tail has been observed from IRS7 lying in the central 0.5 pc. We will search for more examples of ionized stellar winds using P-alpha. Determining the location of the wind source would clarify whether the IRS16 stars power the wind or if SgrA* does. Discovery of more winds could also help determine whether the winds cause an increased mass loss and hence potentially the rate of evolution of these stars. We will image a 2x2 grid using Camera 3 for the main search and also the central region with Camera 2 to register P-alpha knot positions with respect to radio positions to locate SgrA* in the infrared coordinate system. Supporting broadband data will be acquired and parallel observations will be used to investigate the surrounding stellar population.

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