"I.N. Galidakis" wrote:

Chris L Peterson wrote:
[snip]

temperatures can
easily get much higher than the boiling point for many compounds
known to exist in comets (some of which show up in spectra for this
one).

Chris,

do you or anyone else have spectral data on Holmes?

Such as what kind of spectrum does it have and what are the most prominent
elements that show on its spectrum?


a number of good ones exist. Google /17P Holmes spectrum/ or /spectrum of...?

Major emissions are C2 around the Mg triplet at 5129,65, and 85.
C2+NH2 spikes in the CN A region at 5693, 5703, 5732.
Na at 5976 and 5995. The object is proving a challenge for
amateurs. There are some very nbice spectra on the web.
To your last CII is carbon.

.. ..







Thanks,

[snip]

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
--
I.N. Galidakis