Question

why do elliptical galaxies appear yellow or red in color? why do elliptical galaxies appear yellow or red in color? they contain many nebulae that glow red in color. they are moving away from us so their light is highly redshifted. their population is dominated by old, low-mass stars and old, red giant stars. they contain vast amounts of dust that absorbs blue light.

Answer 1

The elliptical galaxies have relatively little cold gas or dust, which means that star formation is not actively taking place.

Elliptical galaxies appear red for what reason?

Many huge elliptical galaxies no longer have any star formation, hence the majority of the stars in these galaxies are long-lived, low mass stars with red optical hues. As a result, astronomers have given these galaxies the moniker "red and lifeless."

Ellipsoidal galaxies are they yellow?

Elliptical galaxies, represented in the image by the yellow fuzzy objects, are typically located towards the centers of galaxy clusters, whereas spiral galaxies, represented by the bluish patches, are typically found farther away and more isolated.

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