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Identifier

000402298

Title

Study of the magnetic field and filamentary structures in the Polaris Flare molecular cloud

Alternative Title

Μελέτη του μαγνητικού πεδίου και των νηματοειδών δομών στο μοριακό νέφος Polaris Flare.

Author

Ψαραδάκη, Ιωάννα Δ.

Thesis advisor

Τάσσης, Κωνσταντίνος

Abstract

In diﬀuse molecular clouds, possible precursors of star-forming clouds, the eﬀect of the magnetic ﬁeld is unclear. In this thesis we compare the orientations of ﬁlamentary structures in the Polaris Flare, as seen through dust emission by Herschel, to the plane-of-the-sky magnetic ﬁeld orientation (B_pos) as revealed by stellar optical polarimetry with RoboPol. Dust structures in this translucent cloud show a strong preference for alignment with B_pos. 70% of ﬁeld orientations are consistent with those of the ﬁlaments (within 30^o). We also explore the spatial variation of the relative orientations and ﬁnd it to be uncorrelated with the dust emission intensity and correlated to the dispersion of polarization angles.

Language

English

Subject

Polarization

Structure

Αστρογέννεση

Μαγνητικά πεδία

Νηματοειδής δομές

Πόλωση

Issue date

2016-07-22

Collection