Other
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...572..288e&link_type=abstract
The Astrophysical Journal, Volume 572, Issue 1, pp. 288-299.
Other
24
Infrared: Stars, Ism: Planetary Nebulae: Individual: Alphanumeric: Wray 17-96, Stars: Evolution, Stars: Variables: Other
Scientific paper
The Midcourse Space Experiment (MSX) Galactic plane survey discovered a nearly perfectly circular ring nebula around the suspected planetary nebula Wray 17-96. Using near-IR spectral typing and modeling of the mid-IR nebula, we find that Wray 17-96 is more likely a candidate to be a luminous blue variable (LBV) surrounded by a large spherical ejecta shell. It is very similar to the G79.29+0.46 LBV candidate in Cygnus and the Pistol Star. The K-band spectrum and the mid-IR data indicate a stellar temperature of 13,000 K. The most likely distance to the source is 4.5 kpc, leading to a luminosity of 1.8×106 Lsolar. We suggest that the nebula consists of multiple shells and that an evolution from oxygen-rich to carbon-rich chemistry may be indicated.
Carey Sean Joseph
Clark Simon J.
Egan Michael P.
Mizuno Donald R.
Price Stephan D.
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