Предмет: Астрономия, автор: tatianaavdeeva2018

От чего зависит видимый свет звезды?
1 от температуры поверхности звезды
2.от наличия спектральных линий
3.от расстояния до Земли

Ответы

Автор ответа: kanatzoldasbaev31
0

Ответ:

3)От расстояния до Земли

Автор ответа: ppp6491
1

Ответ:   Видимая звездная величина звезды зависит и от температуры поверхности звезды и от её расстояния до Земли.

Объяснение:   Видимая звездная величина звезды зависит во-первых, от температуры поверхности звезды. Чем выше температура тем больше светимость звезды. Светимость пропорциональна четвертой степени температуры. Т.е. если, например, одна звезд а в два раза горячее другой, а размеры звезд равны, то светимость более горячей звезды будет выше в 2^4 = 16 раз.  Во-вторых, видимая звездная величина звезды зависит от расстояния, на котором находится звезда. В этом случае яркость пропорциональна второй степени расстояния. Например, две звезды имеют одинаковые светимости, но одна расположена в три раза дальше. В этом случае более далекая звезда будет иметь яркость в 3²= 9 раз меньше.

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