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X-WR-CALDESC:Events for RASC Hamilton
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DTSTART;TZID=America/Toronto:20250517T200000
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DTSTAMP:20260501T050346
CREATED:20250502T144341Z
LAST-MODIFIED:20250502T144341Z
UID:19813-1747512000-1747544400@www.hamiltonrasc.ca
SUMMARY:Catch the Colors of Stars (all night)
DESCRIPTION:Stars shine with a color that is controlled by their surface (or photospheric) temperature\, and this is captured in their spectral classification. In mid-May every year\, the three bright stars of the Summer Triangle asterism are climbing the eastern sky after dusk. Deneb\, Vega\, and Altair are A-class stars that appear blue-white to the eye and have temperatures in the range of 7\,500 to 10\,000 Kelvin. Arcturus\, which dominates the southern sky in evening\, is an orange\, K-class giant star with a temperature of only 4\,300 K. Chara\, the fainter of Canes Venatici’s two stars\, is a yellowish\, G-class star with a temperature of 5\,900 K\, similar to our sun’s. Reddish Antares\, the heart of Scorpius\, which twinkles above the southern horizon\, is an old M-class star with a low surface temperature of 3\,500 K. You can estimate the temperatures of other stars by comparing their color to these bright reference stars.
URL:https://www.hamiltonrasc.ca/event/catch-the-colors-of-stars-all-night/
CATEGORIES:Astronomical Events
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