フォーマルハウト vs ベガ

Property フォーマルハウト ベガ
名称 24Alp PsA 3Alp Lyr
星座 N/A Lyra
スペクトル型 Class A — A-type (White) Class A — A-type (White)
見かけの等級 +1.17 +0.03
絶対等級 1.74 0.60
距離 25.1 ly 25.0 ly
質量 N/A N/A
半径 N/A N/A
温度 N/A N/A
光度 N/A N/A

Key Differences

  • Both are young A-type benchmark stars with prominent debris disks, used to calibrate stellar and planetary evolution models.
  • Fomalhaut is the southernmost autumn star easily seen from northern mid-latitudes.
  • Vega is approximately 1.9 times more massive than Fomalhaut.
  • Both have been candidate targets for direct imaging of orbiting companions.
  • Fomalhaut is one of only 18 stars with disks resolved by Hubble; Vega's disk was first revealed by IRAS in 1983.

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