Astronomers Discover Rare Quadruple Star System

天文学者が希少な四重連星系を発見

In August 2025, astronomers made a groundbreaking discovery: a rare quadruple star system called UPM J1040−3551 AabBab.

2025年8月、天文学者は画期的な発見をしました。

otherUPM J1040−3551 AabBab

Located 82 light-years away in the constellation Antlia, this system features an unusual configuration.

それは「UPM J1040−3551 AabBab」と呼ばれる稀な四重連星系です。

locationAntlia

It consists of two pairs of stars orbiting one another: two M-type red dwarf stars and two cold T-type brown dwarfs.

ポンプ座の方向、82光年先に位置するこの系は、珍しい構造をしています。

conceptbrown dwarf

Because brown dwarfs, often called "failed stars," are notoriously difficult to study due to their dimming over time, this system acts as a perfect cosmic laboratory.

これは、互いに公転し合う2組の連星(M型赤色矮星2つと低温のT型褐色矮星2つ)で構成されています。「

conceptbrown dwarf

The red dwarf pair is significantly brighter, while the T-type brown dwarfs emit almost no visible light, requiring detection through infrared technology.

4つすべての天体が同じ材料から同時に形成されたため、科学者たちはそれらを利用して、これらの謎に満ちた天体の質量や年齢を算出するためのモデルを改良できます。

conceptbrown dwarf
techinfrared technology

Data from the Gaia satellite and NASA’s WISE mission led to this identification, which was later confirmed by the SOAR telescope in Chile.

赤色矮星のペアは非常に明るい一方で、T型の褐色矮星は可視光をほとんど放出しないため、赤外線技術による検出が必要です。

techGaia
orgNASA
techWISE
techSOAR telescope
locationChile

Published in the Monthly Notices of the Royal Astronomical Society, this discovery offers a unique opportunity to understand the evolution of stellar bodies across our universe.

ガイア衛星とNASAのWISEミッションからのデータがこの特定につながり、後にチリのSOAR望遠鏡で確認されました。『

orgMonthly Notices of the Royal Astronomical Society
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チャレンジモード

理解度チェック

Where is the UPM J1040−3551 AabBab system located?

正解

In the constellation Antlia

What makes the UPM J1040−3551 AabBab system a valuable 'cosmic laboratory'?

正解

It helps scientists calibrate models for brown dwarfs

How were the T-type brown dwarfs in the system primarily detected?

正解

Using infrared spectrum detection

Which instruments were used to initially identify the system?

正解

The Gaia satellite and WISE mission

What is the approximate age range of the discovered star system?

正解

300 million to 2 billion years old

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