V1118Ori: The quiescence near IR spectrum becomes featureless

Details V1118Ori: The quiescence near IR spectrum becomes featureless V1118Ori: The quiescence near IR spectrum becomes featureless

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1015....1d&link_type=abstract

The Astronomer's Telegram, #1015

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2

Infra-Red, Variables

Scientific paper

On Sept. 5th, 2006 a new near-IR spectrum of the EXor variable V1118 Ori was taken with the AZT-24 telescope at Campo Imperatore (Italy), by using the same instrumental equipment described in ATEL #619. While the first spectrum was taken during the post-outburst declining phase, the present one refers to the quiescence stage. Surprisingly, all the emission features present before (HI, HeI, other ionic lines and CO bands) now disappeared, given our sensitivity limit (1σ approximately 7×10^-15 erg s^-1 cm^-2): Brγ, taken as an example, decreased by more than a factor of 5.

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