we started off our first colloquium at NTHU this semester with this talk:
(It was a pity that I did not take any picture during the colloquium...
'Cause I was busy taking notes! (Scribble... scribble...) )
It was an awesome talk by our alumnus - Dr. Yen-Chen Pan (潘彥丞).
(If I did not get anything wrong...)
I summarize the talk below :)
In 2011, Perlmutter, Schmidt and Riess won the Nobel Prize in Physics
"for the discovery of the accelerating expansion of the Universe
through observations of distant supernovae."
Detailed studies on 'supernovae' are therefore important in probing the cosmic expansion.
Especially, the Type Ia Supernovae (SNe Ia), which people often call them 'standard candles'
due to the consistent peak luminosity produced.
In their work, they studied the relation between SNe Ia and their host galaxies
using high quality photometric and spectroscopic data.
They concluded that:
1. SNe are Fainter in More Massive galaxies.
2. SNe are Fainter in galaxies with Higher Metallicity.
3. SNe are Fainter in Older galaxies.
4. Metallicity may have More contributions to systematic errors than stellar mass.
It was fun having a lot of discussions and asking lots of follow-up questions
when we were having snacks at the lounge after the talk!
Well... again... I did not take any picture during the tea time...
'Cause I was busy asking questions... QAQ
(By Valerie :D)
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