Exploring the origin of magnetic fields in massive stars: a survey of O-type stars in clusters and in the field?

Authors: S. Hubrig, M. Schöller, N. V. Kharchenko, N. Langer, W. J. de Wit, I. Ilyin, A. F. Kholtygin, A. E. Piskunov, N. Przybilla and .<br />Astronomy & Astrophysics Vol. 528 , page A151<br />Published online: 18/03/2011<br />
Keywords:
polarization ; stars: magnetic field ; stars: kinematics and dynamics ; open clusters and associations: general ; stars: early-type.

Warm dust resolved in the cold disk around T?Chamaeleontis with VLTI/AMBER?

Authors: J. Olofsson, M. Benisty, J.-C. Augereau, C. Pinte, F. Ménard, E. Tatulli, J.-P. Berger, F. Malbet, B. Merín, E. F. van Dishoeck, S. Lacour, K. M. Pontoppidan, J.-L. Monin, J. M. Brown and G. A. Blake.<br />Astronomy & Astrophysics Vol. 528 , page L6<br />Published online: 24/02/2011<br />
Keywords:
stars: pre-main sequence ; stars: evolution ; protoplanetary disks ; circumstellar matter ; infrared: stars ; techniques: interferometric.

Global e-VLBI observations of the gamma-ray narrow line Seyfert 1 PMN J0948+0022

Authors: M. Giroletti, Z. Paragi, H. Bignall, A. Doi, L. Foschini, K. É. Gabányi, C. Reynolds, J. Blanchard, R. M. Campbell, F. Colomer, X. Hong, M. Kadler, M. Kino, H. J. van Langevelde, H. Nagai, C. Phillips, M. Sekido, A. Szomoru and A. K. Tzioumis.<br />Astronomy & Astrophysics Vol. 528 , page L11<br />Published online: 02/03/2011<br />
Keywords:
galaxies: active ; galaxies: Seyfert ; galaxies: jets ; instrumentation: high angular resolution ; instrumentation: interferometers.

Concurrent X-ray, near-infrared, sub-millimeter, and GeV gamma-ray observations of Sagittarius A*

Authors: G. Trap, A. Goldwurm, K. Dodds-Eden, A. Weiss, R. Terrier, G. Ponti, S. Gillessen, R. Genzel, P. Ferrando, G. Bélanger, Y. Clénet, D. Rouan, P. Predehl, R. Capelli, F. Melia and F. Yusef-Zadeh.<br />Astronomy & Astrophysics Vol. 528 , page A140<br />Published online: 16/03/2011<br />
Keywords:
Galaxy: center ; black hole physics ; radiation mechanisms: non-thermal ; X-rays: general ; infrared: general ; submillimeter: general.