On the polarimetric variability of bright O-type stars

Polarimetric data associated with multi-parameter observational campaigns of selected bright O-type stars and their variable winds, are analysed in relation to the outcomes of the UV and optical spectroscopic studies. For the stars ξ Per and λ Cep, individual measurement uncertainties are Δρ~±0.0002 with nightly mean uncertainties of Δρ~±0.00007. Although variability is apparent on a night-to-night basis, with differences in δρ~0.0002, no correlations are found between these and the periodic behaviours associated with the stellar Si IV and H α lines. Similar polarimetric variability is seen in the data for the standard star ø Cas used as a reference in this observing campaign. It is suggested that all of these low level fluctuations are not intrinsic to the stars but are engendered by structured instrumental polarization in the diffraction pattern and depolarization effects in combination with inconsistent target acquisition and with variable seeing conditions in the Earth's atmosphere. Reassessment of older data for λ Cep from Hayes (1978) also supports this thesis

Worth

This is a film review of Worth (2020), directed by Sara Colangelo

The Nightmare

This is a film review of The NIghtmare (2014), directed by Rodney Ascher

“Meddling in the work of another”: πολυπραγμονεῖν in Plato’s \u3cem\u3eRepublic\u3c/em\u3e

The second conjunct of the Republic’s account of justice—that justice is “not meddling in the work of another”—has been neglected in Plato literature. This paper argues that the conjunct does more work than merely reiterating the content of the first conjunct—that justice is “doing one’s own work.” I argue that Socrates develops the concept at work in this conjunct from its introduction with the Principle of Specialization in Book II to its final deployment in the finished conception of justice in Book IV. Crucial to that concept’s development is the way in which the notion of “another” comes to refer to members of distinct classes or parts, i.e. takes on an inter-part connotation beyond a mere intra-part connotation. The first conjunct—that justice is “doing one’s own work”—does not connote the same divisions, and so the conjuncts should not be understood as equivalent or mutually entailed

Drunktown\u27s Finest

This is a film review of Drunktown\u27s Finest (2013), directed by Sydney Freeland

Tig

This is a film review of Tig (2015), directed by Kristina Goolsby and Ashley York

Hellions

This is a film review of Hellions (2015), directed by Bruce McDonald