Spectroscopy – The Fingerprint of the Stars
If surgeon need scalpel to dissect patient (ouch), so does astronomer need their scalpel, that is by dissecting the light of the star, which collected by the telescope. Let is said, that spectroscopy is technical method to break the star-light into rainbow color (or electromagnetic wave in more general term – that is if the astronomer is not an optician) & see how the rainbow is so different between one star & another, this is the finger-print of the stars. So from this rainbow, we know about what is this star, this is the fingerprint of the sun, that one is sirius, that one is aldebaran, that one is capela, that one is betelgeuse, etc etc.
So here it is, the fingerprint of Sirius, not so special about it. Realy, you could check from spectroscopy atlas of stars anywhere, but one thing that is so special is shown by prof. Gerbaldi, there is one distinct line that related to water vapor above the LNO, oh dear, even the sky above the LNO is not so astronomically clear. *sigh* . Yeah, nothing is perfect, that is how the nature behave.
This evidence will be challenging for every observers who will observe from that site someday. Maybe our information might be invaluable someday? Or might be just stepped aside & forgotten?
Maybe? (with Nam’s style of speaking [Nam Sok Chong, -the Korean guy]).