Carbon stars as standard candles: The luminosity function of carbon stars in the Magellanic Clouds
Event Start:
2020-06-08T15:00:00
Event End:
2020-06-08T15:30:00
Event Information:
Our goal is to derive a carbon-star luminosity function that will eventually be used to determine distances to galaxies at 50–60 Mpc and hence yield a value of the Hubble constant. Cool N-type carbon stars exhibit redder near-infrared colours than oxygen-rich stars. Using Two Micron All Sky Survey near-infrared photometry and the Gaia Data Release 2, we identify carbon stars in the Magellanic Clouds (MC) and the Milky Way (MW). Carbon stars in the MC appear as a distinct horizontal feature in the near-infrared colour–magnitude diagram.
Event Location:
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Speaker:
Paul Ripoche (UBC)
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Event Start:
2020-06-08T15:00:00
Event End:
2020-06-08T15:30:00
Carbon stars as standard candles: The luminosity function of carbon stars in the Magellanic Clouds
Event Information:
Our goal is to derive a carbon-star luminosity function that will eventually be used to determine distances to galaxies at 50–60 Mpc and hence yield a value of the Hubble constant. Cool N-type carbon stars exhibit redder near-infrared colours than oxygen-rich stars. Using Two Micron All Sky Survey near-infrared photometry and the Gaia Data Release 2, we identify carbon stars in the Magellanic Clouds (MC) and the Milky Way (MW). Carbon stars in the MC appear as a distinct horizontal feature in the near-infrared colour–magnitude diagram.
Event Location:
Join via zoom