Английская Википедия:HD 74438

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HD 74438 is a spectroscopic quadruple stellar system composed of a pair of double star systems approximately 425 light years from Earth, located in open cluster IC 2391.[1][2] With an estimated age of Шаблон:Val million years,[3] HD 74438 is the youngest quadruple star system known.[4] The outer orbital period of the system, estimated at around 5.7 years, is also among the shortest of quadruple systems.[3][4]

The HD 74438 system was confirmed to be a gravitationally bound quadruple system in 2017 from data collected in the Gaia-ESO Survey.[1] In a paper published in 2022, HD 74438 was identified as a possible progenitor of a sub-Chandrasekhar Type Ia supernova.[3]

References

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Шаблон:Stars of Vela