Herschel: a CACCIA di Grandi Stelle

28 2013

Herschel: a CACCIA di Grandi Stelle

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W3, ESAs Herschel space observatory, può raccontare la storia sulla formazione stellare W3, e come sono nate.

W3 è una nube molecolare gigante contenente un enorme vivaio stellare, dista a circa 6200 anni luce dal Braccio di Perseo, uno dei bracci a spirale principali della nostra galassia, dalla Via Lattea.

Spanning quasi 200 anni luce, W3 è una delle formazioni stellari più grandi, nella Via Lattea. Ospita la formazione di due stelle a bassa e ad alta massa. La massa è otto volte quella del nostro Sole.

Osservando l’immagine, in alto a sinistra, si notano nodi blu e la formazione massiccia di stelle che dominano la scena, queste sono rappresentate nelle due regioni più giovani: W3 Main e W3 (OH).
Le stelle con una massa più grande, (stelle più vecchie), sono viste, appaiono sono state contrassegnate in basso a sinistra, con AFGL 333 ridge, e a destra con KR 140.

leggi la notizia in lingua inglese per l’approfondimento. clicca qui - HUNTING HIGH-MASS STARS WITH HERSCHEL

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