A-type main-sequence star

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Notion

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Science and technology

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What Wikipedia says

An A-type main-sequence star is a main-sequence (core hydrogen burning) star of spectral type A. The spectral luminosity class is V. These stars have spectra defined by strong hydrogen Balmer absorption lines.

Excerpt from the Wikipedia article “A-type main-sequence star”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: NASA, ESA and G. Bacon (STScI), Public domain, via Wikimedia Commons.