Detection of CH+ emission from the disc around HD 100546???

Authors: W.-F. Thi, F. Ménard, G. Meeus, C. Martin-Zaïdi, P. Woitke, E. Tatulli, M. Benisty, I. Kamp, I. Pascucci, C. Pinte, C. A. Grady, S. Brittain, G. J. White, C. D. Howard, G. Sandell and C. Eiroa.<br />Astronomy & Astrophysics Vol. 530 , page L2<br />Published online: 28/04/2011<br />
Keywords:
protoplanetary disks ; astrochemistry.

Reducing star leakage with a nuller coronagraph

Authors: C. Aime, Y. Rabbia, A. Carlotti and G. Ricort.<br />Astronomy & Astrophysics Vol. 530 , page A52<br />Published online: 06/05/2011<br />
Keywords:
instrumentation: high angular resolution ; instrumentation: interferometers ; techniques: high angular resolution ; techniques: interferometric ; methods: analytical.

A principal component analysis of quasar UV spectra at z  ~  3?

Authors: I. Pâris, P. Petitjean, E. Rollinde, E. Aubourg, N. Busca, R. Charlassier, T. Delubac, J.-Ch. Hamilton, J.-M. Le Goff, N. Palanque-Delabrouille, S. Peirani, Ch. Pichon, J. Rich, M. Vargas-Magaña and Ch. Yèche.<br />Astronomy & Astrophysics Vol. 530 , page A50<br />Published online: 06/05/2011<br />
Keywords:
methods: numerical ; intergalactic medium ; quasars: absorption lines ; quasars: emission lines.

Chromospheric activity of stars with planets

Authors: B. L. Canto Martins, M. L. das Chagas, S. Alves, I. C. Leão, L. P. de Souza Neto and J. R. de Medeiros.<br />Astronomy & Astrophysics Vol. 530 , page A73<br />Published online: 12/05/2011<br />
Keywords:
planet-star interactions ; stars: activity ; stars: chromospheres ; stars: coronae ; stars: statistics.