Zobrazeno 1 - 10
of 20 138
pro vyhledávání: '"A, Zijlstra"'
Autor:
Cody, Sean Enis, Scher, Sebastian, McDonald, Iain, Zijlstra, Albert, Alexander, Emma, Cox, Nick L. J.
Publikováno v:
Open Research Europe 4, no. 29 (2024): 29
Identifying stars belonging to different classes is vital in order to build up statistical samples of different phases and pathways of stellar evolution. In the era of surveys covering billions of stars, an automated method of identifying these class
Externí odkaz:
http://arxiv.org/abs/2410.22869
We have developed a new method of multi-wavelength data combination for the search of late-type radio dwarfs, and have put it into practice using GLEAM-X DR1 data. The initial sample is selected by cross-matching the Gaia/DR3 objects with the probabi
Externí odkaz:
http://arxiv.org/abs/2410.21752
Autor:
Abraham, Z., Beaklini, P. P. B., Aleman, I., Sahai, R., Zijlstra, A., Akras, S., Gonçalves, D. R., Ueta, T.
The hydrogen recombination lines H30$\alpha$, H40$\alpha$, H42$\alpha$, H50$\beta$ and H57$\gamma$ and the underlying bremsstrahlung continuum emission were detected with ALMA in the bipolar nebula Mz3. The source was not spatially resolved, but the
Externí odkaz:
http://arxiv.org/abs/2410.11901
Autor:
Van de Steene, Griet, van Hoof, Peter, Kimeswenger, Stefan, Hajduk, Marcin, Tafoya, Daniel, Toala, Jesus, Zijlstra, Albert, Barria, Daniela
Optical spectra of the Very Late Thermal Pulse (VLTP) object V4334 Sgr have shown a rapidly changing spectrum resulting from shocks in the outflow, which created a new bipolar nebula inside the old nebula. We see C II and C III emission lines emergin
Externí odkaz:
http://arxiv.org/abs/2409.13289
Autor:
Sahai, Raghvendra, Alcolea, Javier, Balick, Bruce, Blackman, Eric G., Bujarrabal, Valentin, Castro-Carrizo, Arancha, De Marco, Orsola, Kastner, Joel, Kim, Hyosun, Lagadec, Eric, Lee, Chin-Fei, Sabin, Laurence, Santander-Garcia, M., Contreras, Carmen Sánchez, Tafoya, Daniel, Ueta, Toshiya, Vlemmings, Wouter, Zijlstra, Albert
As mass-losing asymptotic giant branch (AGB) stars evolve to planetary nebulae (PNe), the mass outflow geometries transform from nearly spherical to extreme aspherical. The physical mechanisms governing this transformation are widely believed to be l
Externí odkaz:
http://arxiv.org/abs/2409.06038
Autor:
Cano-Velázquez, M. S., Buntinx, S., Hendriks, A. L., Van Klinken, A., Li, C., Heijnen, B. J., Dolci, M., Picelli, L., Abdelkhalik, M. S., Sevo, P., Petruzzella, M., Pagliano, F., Hakkel, K. D., van Elst, D. M. J., van Veldhoven, P. J., Verhagen, E., Zijlstra, P., Fiore, A.
Optical sensors offer precision, remote read-out, and immunity to electromagnetic interference but face adoption challenges due to complex and costly readout instrumentation, mostly based on high-resolution. This article challenges the notion that hi
Externí odkaz:
http://arxiv.org/abs/2408.07487
Autor:
Ouyang, Xu-Jia, Zhang, Yong, Zhang, Chuan-Peng, Jiang, Peng, Nakashima, Jun-ichi, Chen, Xi, Qiao, Hai-Hua, Zhang, Xu-Ying, Sun, Hao-Min, Li, Xiao-Hu, Zijlstra, Albert
We present the first detection of the ground-state OH emission line at 1612 MHz toward the prototypical carbon-rich planetary nebula (PN) NGC 7027, utilizing the newly installed ultra-wideband (UWB) receiver of the Five-hundred-meter Aperture Spheric
Externí odkaz:
http://arxiv.org/abs/2408.02962
Autor:
Hajduk, Marcin, van Hoof, Peter A. M., Zijlstra, Albert A., Van de Steene, Griet, Kimeswenger, Stefan, Barría, Daniela, Tafoya, Daniel, Toalá, Jesús A.
Publikováno v:
A&A 688, L21 (2024)
The very late thermal pulse (VLTP) affects the evolution of $\sim$20\% of 1--8\,$\mathrm M_\odot$ stars, repeating the last phases of the red giant within a few years and leading to the formation of a new, but hydrogen-poor nebula within the old plan
Externí odkaz:
http://arxiv.org/abs/2407.18020
Autor:
Danilovich, T., Malfait, J., Van de Sande, M., Montargès, M., Kervella, P., De Ceuster, F., Coenegrachts, A., Millar, T. J., Richards, A. M. S., Decin, L., Gottlieb, C. A., Pinte, C., De Beck, E., Price, D. J., Wong, K. T., Bolte, J., Menten, K. M., Baudry, A., de Koter, A., Etoka, S., Gobrecht, D., Gray, M., Herpin, F., Jeste, M., Lagadec, E., Maes, S., McDonald, I., Marinho, L., Müller, H. S. P., Pimpanuwat, B., Plane, J. M. C., Sahai, R., Wallström, S. H. J., Yates, J., Zijlstra, A.
Publikováno v:
Nature Astronomy, 8, pages 308-327 (2024)
Binary interactions have been proposed to explain a variety of circumstellar structures seen around evolved stars, including asymptotic giant branch (AGB) stars and planetary nebulae. Studies resolving the circumstellar envelopes of AGB stars have re
Externí odkaz:
http://arxiv.org/abs/2407.16979
Autor:
Gesicki, K., Zijlstra, A., Hajduk, M., Iwanowska, A., Grzesiak, K., Lisiecki, K., Lipinski, J.
Publikováno v:
A&A 689, A17 (2024)
Aims. Numerous planetary nebulae show complicated inner structures not obviously explained. For one such object we undertake a detailed 3D photoionization and kinematical model analysis for a better understanding of the underlying shaping processes.
Externí odkaz:
http://arxiv.org/abs/2407.05727