The Near-IR Spectrum of the Homunculus Nebula Around Eta Carinae

Details The Near-IR Spectrum of the Homunculus Nebula Around Eta Carinae The Near-IR Spectrum of the Homunculus Nebula Around Eta Carinae

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.0815s&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #08.15; Bulletin of the American Astronomical Society, Vol. 32, p.1408

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the detection of near-IR emission from molecular hydrogen and the 1.644 micron [Fe II] line in the bipolar lobes of the Homunculus reflection nebula around Eta Carinae. The strength of the [Fe II] emission compared to Br gamma, combined with the molecular hydrogen emission, indicates shock excitation. This is the first detection of the near-IR molecular hydrogen lines in Eta Car, and is also the first detection of any molecular gas or clearly shock-excited emission in the Homunculus. The molecular hydrogen and strong [Fe II] emission are only seen in the polar lobes at positions several arcseconds away from the central star. These results suggest that Eta Carinae may have a fast bipolar wind that is colliding with gas in the polar lobes.

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