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Μεσοαστρική Ύλη

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H 2. Η. Αέριο (99%). HI (21 cm). ΗΙΙ (H α emission, συνεχές στα ραδιοκύματα και υπέρυθρο). Μεσοαστρική Ύλη. He. Σκόνη (1%). Κοσμική Ακτινοβολία. Μαγνητικό πεδίο ( ≈ 3 μ G ). Μεσοαστρική Ύλη.

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slide1

H2

Η

Αέριο (99%)

HI (21 cm)

ΗΙΙ (Hα emission, συνεχές στα ραδιοκύματα και υπέρυθρο)

Μεσοαστρική

Ύλη

He

Σκόνη (1%)

Κοσμική Ακτινοβολία

Μαγνητικό πεδίο (≈ 3 μG)

slide4

The spiral galaxy M 81: a colour-coded composite of radio observations of atomic hydrogen (blue) made with the Very Large Array (VLA) and infrared observations made with the SPITZER Space Telescope (green and red). Scientists at MPIA use data like these to study the influence of the large-scale distribution of interstellar matter on the star formation process.

slide5

Μεσοαστρική σκόνη

Σύνθεση:

Άνθρακας

Σίδηρος

Πυρίτιο

Μαγνήσιο

Θείο

Αργίλιο

Άζωτο