NOMINAL VALUES FOR SELECTED SOLAR AND PLANETARY QUANTITIES: IAU 2015 RESOLUTION B3

Solar and planetary dynamos

While obviously having a common root, solar and planetary dynamo theory have taken increasingly divergent routes in the last two or three decades, and there are probably few experts now who can claim to be equally versed in both. Characteristically, even in the fine and comprehensive book “The magnetic Universe” (Rüdiger & Hollerbach 2004), the chapters on planets and on the Sun were written by...

Extra-solar Planetary Systems

Using the Web for Nominal Anaphora Resolution

We present a novel method for resolving non-pronominal anaphora. Instead of using handcrafted lexical resources, we search the Web with shallow patterns which can be predetermined for the type of anaphoric phenomenon. In experiments for other-anaphora and bridging, our shallow, almost knowledge-free and unsupervised method achieves state-ofthe-art results.

Comparing Knowledge Sources for Nominal Anaphora Resolution

We compare two ways of obtaining lexical knowledge for antecedent selection in other-anaphora and definite noun phrase coreference. Specifically, we compare an algorithm that relies on links encoded in the manually created lexical hierarchy WordNet and an algorithm that mines corpora by means of shallow lexico-semantic patterns. As corpora we use the British National Corpus (BNC), as well as th...

Selected Fe II lifetimes and f-values suitable for a solar abundance study

A selected number of Fe II level lifetimes have been measured anew with an improved experimental equipment and evaluation procedure yielding data with uncertainties around 1%. The lifetimes have been used to rescale the corresponding oscillator strengths and to derive solar abundances. On average, the iron abundance, log N(Fe) = 7.42 ± 0.09 on the scale log N(H) = 12, is further reduced support...