Zobrazeno 1 - 10
of 244
pro vyhledávání: '"SKINNER, S. L."'
Faint X-ray emission from hot plasma (T > 1 MK) has been detected extending outward a few arcseconds along the optically-delineated jets of some classical T Tauri stars including RY Tau. The mechanism and location where the jet is heated to X-ray tem
Externí odkaz:
http://arxiv.org/abs/1801.08568
Autor:
Zhekov, S. A., Skinner, S. L.
We present an analysis of XMM-Newton X-ray data of WR30a (WO+O), a close massive binary that harbours an oxygen-rich Wolf-Rayet star. Its spectrum is characterized by the presence of two well-separated broad peaks, or `bumps', one peaking at energies
Externí odkaz:
http://arxiv.org/abs/1506.04634
The short-period (1.64 d) near-contact eclipsing WN6+O9 binary system CQ Cep provides an ideal laboratory for testing the predictions of X-ray colliding wind shock theory at close separation where the winds may not have reached terminal speeds before
Externí odkaz:
http://arxiv.org/abs/1411.4075
The active young protostar DG Tau has an extended jet that has been well studied at radio, optical, and X-ray wavelengths. We report sensitive new VLA full-polarization observations of the core and jet between 5 GHz and 8 GHz. Our high angular resolu
Externí odkaz:
http://arxiv.org/abs/1302.0751
Autor:
Baldovin-Saavedra, C., Audard, M., Carmona, A., Guedel, M., Briggs, K., Rebull, L. M., Skinner, S. L., Ercolano, B.
{Abridged version for ArXiv}. We provide direct constraints on the origin of the [Ne II] emission in 15 young stars using high-spatial and spectral resolution observations with VISIR at the VLT that allow us to study the kinematics of the emitting ga
Externí odkaz:
http://arxiv.org/abs/1205.2182
We report results of a sensitive Chandra ACIS-S observation of the classical T Tauri star RY Tau. Previous studies have shown that it drives a spectacular bipolar jet whose blueshifted component is traced optically along P.A. approximately 295 degree
Externí odkaz:
http://arxiv.org/abs/1105.5125
Autor:
Baldovin-Saavedra, C., Audard, M., Güdel, M., Rebull, L. M., Padgett, D. L., Skinner, S. L., Carmona, A., Glauser, A. M., Fajardo-Acosta, S. B.
Our knowledge of circumstellar disks has traditionally been based on studies of dust. However, gas dominates the disk mass and its study is key to understand the star and planet formation process. Spitzer can access gas emission lines in the mid-infr
Externí odkaz:
http://arxiv.org/abs/1101.3707
Autor:
Guedel, M., Audard, M., Bacciotti, F., Bary, J. S., Briggs, K. R., Cabrit, S., Carmona, A., Codella, C., Dougados, C., Eisloeffel, J., Gueth, F., Guenther, H. M., Herczeg, G., Kundurthy, P., Matt, S. P., Mutel, R. L., Ray, T., Schmitt, J. H. M. M., Schneider, P. C., Skinner, S. L., van Boekel, R.
We report on new X-ray observations of the classical T Tauri star DG Tau. DG Tau drives a collimated bi-polar jet known to be a source of X-ray emission perhaps driven by internal shocks. The rather modest extinction permits study of the jet system t
Externí odkaz:
http://arxiv.org/abs/1101.2780
Autor:
Audard, M., Stringfellow, G. S., Güdel, M., Skinner, S. L., Walter, F. M., Guinan, E. F., Hamilton, R. T., Briggs, K. R., Baldovin-Saavedra, C.
Abriged version for astroph: The young late-type star V1118 Orionis was in outburst from 2005 to 2006. We followed the outburst with optical and near-infrared photometry; the X-ray emission was further probed with observations taken with XMM-Newton a
Externí odkaz:
http://arxiv.org/abs/0912.3224
We summarize new X-ray detections of four nitrogen-type Wolf-Rayet (WR) stars obtained in a limited survey aimed at establishing the X-ray properties of WN stars across their full range of spectral subtypes. None of the detected stars is so far known
Externí odkaz:
http://arxiv.org/abs/0912.1326