Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Posch, Th."'
Autor:
Mecina, M., Kerschbaum, F., Groenewegen, M. A. T., Ottensamer, R., Blommaert, J. A. D. L., Mayer, A., Decin, L., Luntzer, A., Vandenbussche, B., Posch, Th., Waelkens, C.
For the Mass-loss of Evolved StarS (MESS) programme, the unprecedented spatial resolution of the PACS photometer on board the Herschel space observatory was employed to map the dusty environments of asymptotic giant branch (AGB) and red supergiant (R
Externí odkaz:
http://arxiv.org/abs/1405.2769
Autor:
Blommaert, J. A. D. L., de Vries, B. L., Waters, L. B. F. M., Waelkens, C., Min, M., Van Winckel, H., Molster, F., Decin, L., Groenewegen, M. A. T., Barlow, M., García-Lario, P., Kerschbaum, F., Posch, Th., Royer, P., Ueta, T., Vandenbussche, B., Van de Steene, G., van Hoof, P.
We present 48 Herschel/PACS spectra of evolved stars in the wavelength range of 67-72 $\mu$m. This wavelength range covers the 69 $\mu$m band of crystalline olivine ($\text{Mg}_{2-2x}\text{Fe}_{(2x)}\text{SiO}_{4}$). The width and wavelength position
Externí odkaz:
http://arxiv.org/abs/1403.6335
Autor:
Khouri, T., de Koter, A., Decin, L., Waters, L. B. F. M., Lombaert, R., Royer, P., Swinyard, B., Barlow, M. J., Alcolea, J., Blommaert, J. A. D. L., Bujarrabal, V., Cernicharo, J., Groenewegen, M. A. T., Justtanont, K., Kerschbaum, F., Maercker, M., Marston, A., Matsuura, M., Melnick, G., Menten, K. M., Olofsson, H., Planesas, P., Polehampton, E., Posch, Th., Schmidt, M., Szczerba, R., Vandenbussche, B., Yates, J.
Publikováno v:
A&A 561A (2014) 5-17
Asymptotic giant branch (AGB) stars lose their envelopes by means of a stellar wind whose driving mechanism is not understood well. Characterizing the composition and thermal and dynamical structure of the outflow provides constraints that are essent
Externí odkaz:
http://arxiv.org/abs/1403.2892
Autor:
Mayer, A., Jorissen, A., Kerschbaum, F., Ottensamer, R., Nowotny, W., Cox, N. L. J., Aringer, B., Blommaert, J. A. D. L., Decin, L., van Eck, S., Gail, H. -P., Groenewegen, M. A. T., Kornfeld, K., Mecina, M., Posch, Th., Vandenbussche, B., Waelkens, C.
Publikováno v:
A&A, Volume 549, A69, January 2013
The Mass loss of Evolved StarS (MESS) sample offers a selection of 78 Asymptotic Giant Branch (AGB) stars and Red Supergiants (RSGs) observed with the PACS photometer on-board Herschel at 70 and 160 {\mu}m. For most of these objects, the dusty AGB wi
Externí odkaz:
http://arxiv.org/abs/1211.3595
Autor:
Cox, N. L. J., Kerschbaum, F., van Marle, A. -J., Decin, L., Ladjal, D., Mayer, A., Groenewegen, M. A. T., van Eck, S., Royer, P., Ottensamer, R., Ueta, T., Jorissen, A., Mecina, M., Meliani, Z., Luntzer, A., Blommaert, J. A. D. L., Posch, Th., Vandenbussche, B., Waelkens, C.
Far-infrared Herschel/PACS images at 70 and 160 micron of a sample of 78 Galactic evolved stars are used to study the (dust) emission structures, originating from stellar wind-ISM interaction. In addition, two-fluid hydrodynamical simulations of the
Externí odkaz:
http://arxiv.org/abs/1110.5486
Autor:
Jorissen, A., Mayer, A., Van Eck, S., Ottensamer, R., Kerschbaum, F., Ueta, T., Bergman, P., Blommaert, J. A. D. L., Decin, L., Groenewegen, M. A. T., Hron, J., Nowotny, W., Olofsson, H., Posch, Th., Sjouwerman, L. O., Vandenbussche, B., Waelkens, C.
The asymptotic giant branch (AGB) stars X Her and TX Psc have been imaged at 70 and 160 microns with the PACS instrument onboard the Herschel satellite, as part of the large MESS (Mass loss of Evolved StarS) Guaranteed Time Key Program. The images re
Externí odkaz:
http://arxiv.org/abs/1106.3645
Autor:
Mayer, A., Jorissen, A., Kerschbaum, F., Mohamed, S., Van Eck, S., Ottensamer, R., Blommaert, J. A. D. L., Decin, L., Groenewegen, M. A. T., Posch, Th., Vandenbussche, B., Waelkens, C.
Publikováno v:
Astronomy & Astrophysics, Volume 531, L4 (July 2011)
Herschel's PACS instrument observed the environment of the binary system Mira Ceti in the 70 and 160 micron bands. These images reveal bright structures shaped as five broken arcs and fainter filaments in the ejected material of Mira's primary star.
Externí odkaz:
http://arxiv.org/abs/1106.3643
To trace the source of the unique 13, 19.5, and 28 $\mu$m emission features in the spectra of oxygen-rich circumstellar shells around AGB stars, we have compared dust extinction spectra obtained by aerosol measurements. We have measured the extinctio
Externí odkaz:
http://arxiv.org/abs/0906.1533
Hydrous silicates occur in various cosmic environments, and are among the minerals with the most pronounced bands in the far infrared (FIR) spectral region. Given that Herschel and ALMA will open up new possibilities for astronomical FIR and sub-mm s
Externí odkaz:
http://arxiv.org/abs/0810.3109
Carbonates have repeatedly been discussed as possible carriers of stardust emission bands. However, the band assignments proposed so far were mainly based on room temperature powder transmission spectra of the respective minerals. Since very cold cal
Externí odkaz:
http://arxiv.org/abs/0706.3963