Investigating the Temperature Distribution of Diatomic Carbon in Comets using the Swan Bands. (arXiv:1910.03688v1 [astro-ph.EP])

Investigating the Temperature Distribution of Diatomic Carbon in Comets using the Swan Bands. (arXiv:1910.03688v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Nelson_T/0/1/0/all/0/1">Tyler Nelson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cochran_A/0/1/0/all/0/1">Anita Cochran</a>

We present high spectral-resolution observations of comets 122P/de Vico and
153P/Ikeya-Zhang obtained with the Tull Coud'{e} spectrograph on the 2.7m
Harlan J. Smith telescope of McDonald Observatory. We used these data to study
the distribution of the lines of the $mathrm{d} ^3Pi_g – mathrm{a} ^3Pi_u$
C$_2$ (Swan) bands. We show that the data are best represented with two
rotational temperatures, with the lowest energy lines being at a relatively
cool temperature and the higher energy lines being at a higher temperature. We
discuss the implications of this two temperature distribution and suggest
future work.

We present high spectral-resolution observations of comets 122P/de Vico and
153P/Ikeya-Zhang obtained with the Tull Coud'{e} spectrograph on the 2.7m
Harlan J. Smith telescope of McDonald Observatory. We used these data to study
the distribution of the lines of the $mathrm{d} ^3Pi_g – mathrm{a} ^3Pi_u$
C$_2$ (Swan) bands. We show that the data are best represented with two
rotational temperatures, with the lowest energy lines being at a relatively
cool temperature and the higher energy lines being at a higher temperature. We
discuss the implications of this two temperature distribution and suggest
future work.

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