Ten Micron Spectra of Nova Cygni 1992

Details Ten Micron Spectra of Nova Cygni 1992 Ten Micron Spectra of Nova Cygni 1992

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...181.4403h&link_type=abstract

American Astronomical Society, 181st AAS Meeting, #44.03; Bulletin of the American Astronomical Society, Vol. 24, p.1189

Astronomy and Astrophysics

Astronomy

Scientific paper

We present infrared spectra of Nova Cygni 1992 taken with SpectroCam-10, the Cornell-built 10 microns spectrograph/camera for the Hale 200-inch telescope, in April and August 1992. A low-resolution 8--13 microns spectrum on April 13.5 shows a strong [Ne {\small II}] 12.8 microns emission line and several hydrogen recombination lines on top of the free-free continuum. High resolution (R = 2000) spectra of the [Ne {\small II}] and Humphreys alpha 12.37 microns lines on the same date show them to be ~ 2000 km s(-1) FWHM. The [Ne {\small II}] line has a double-peaked central core and broad wings. On August 9, all lines as well as the continuum were approximately 10% as bright as in April. The wings of the [Ne {\small II}] lines had essentially disappeared, leaving the central core. From the relative intensity of the [Ne {\small II}] line and the free continuum in April, we calculate that the abundance of neon relative to hydrogen is at least four times greater than the solar composition. There is no sign of emission from dust on either date.

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