A SNAP Image of the Circumstellar Ejecta of AE And in M31

Details A SNAP Image of the Circumstellar Ejecta of AE And in M31 A SNAP Image of the Circumstellar Ejecta of AE And in M31

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006hst..prop10796h&link_type=abstract

HST Proposal ID #10796. Cycle 15

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Scientific paper

The "supernova impostor" or Luminous Blue Variable AE Andromedae in M31 has a spectrum that more closely resembles eta Car than any other known LBV, including the presence of anomalously strong and peculiar Fe II emission. An early FOC ultraviolet image of AE And showed a faint, fuzzy extension of the presumed stellar object. This may be nebulosity from an earlier eruption, or a very nearby UV-bright star. Possibly AE And is embedded in a bipolar nebula. In any case, 2-color ACS/HRC imaging will show the nature of this object. The presence of ejecta will be relevant to understanding the anomalous emission. If nebulous, the shape and extent of the ejecta can provide information on the wind geometry. An extended bipolar structure, similar to eta Car, would be especially interesting as it may be a clue to the mechanism of the more energetic giant eruptions.

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