Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Wong Ka Tat"'
Autor:
Winters Jan Martin, Le Bertre Thibaut, Hoai Do Thi, Wong Ka Tat, Nhung Pham Tuyet, Lesaffre Pierre, Kim Wonju, Darriulat Pierre
Publikováno v:
EPJ Web of Conferences, Vol 265, p 00030 (2022)
We present data recently obtained with NOEMA/PolyFiX on the MS-type Asymptotic Giant Branch (AGB) star RS Cnc, allowing to characterize in detail the structure of its wind. These results became possible by the recent advances of the NOEMA observatory
Externí odkaz:
https://doaj.org/article/0ef8350d81964dee864bb2666d444e9d
Autor:
Asaki, Yoshiharu, Maud, Luke T., Francke, Harold, Nagai, Hiroshi, Petry, Dirk, Fomalont, Edward B., Humphreys, Elizabeth, Richards, Anita M. S., Wong, Ka Tat, Dent, William, Hirota, Akihiko, Fernandez, Jose Miguel, Takahashi, Satoko, Hales, Antonio S.
The Atacama Large Millimeter/submillimeter Array (ALMA) was used in 2021 to image the carbon-rich evolved star R Lep in Bands 8-10 (397-908 GHz) with baselines up to 16 km. The goal was to validate the calibration, using band-to-band (B2B) phase refe
Externí odkaz:
http://arxiv.org/abs/2310.09664
Autor:
Jeste, Manali, Gong, Yan, Wong, Ka Tat, Menten, Karl M., Kamiński, Tomasz, Wyrowski, Friedrich
Publikováno v:
A&A 666, A69 (2022)
Context. HCN is the most abundant molecule after H$_{2}$ and CO in the circumstellar envelopes (CSEs) of carbon-rich asymptotic giant branch (AGB) stars. Its rotational lines within vibrationally excited states are exceptional tracers of the innermos
Externí odkaz:
http://arxiv.org/abs/2206.12371
Autor:
Homan, Ward, Pimpanuwat, Bannawit, Herpin, Fabrice, Danilovich, Taissa, McDonald, Iain, Wallström, Sofia H. J., Richards, Anita M. S., Baudry, Alain, Sahai, Raghvendra, Millar, Tom J., de Koter, Alex, Gottlieb, C. A., Kervella, Pierre, Montargès, Miguel, Van de Sande, Marie, Decin, Leen, Zijlstra, Albert, Etoka, Sandra, Jeste, Manali, Müller, Holger S. P., Maes, Silke, Malfait, Jolien, Menten, Karl, Plane, John, Lee, Kelvin, Waters, Rens, Wong, Ka Tat, Lagadec, Eric, Gobrecht, David, Yates, Jeremy, Price, Daniel, Cannon, Emily, Bolte, Jan, De Ceuster, Frederik, Nuth, Joe, Sindel, Jan philip, Kee, Dylan, Gray, Malcolm D., Mellah, Ileyk El
Publikováno v:
A&A 651, A82 (2021)
Evolved low- to intermediate-mass stars are known to shed their gaseous envelope into a large, dusty, molecule-rich circumstellar nebula which typically develops a high degree of structural complexity. Most of the large-scale, spatially correlated st
Externí odkaz:
http://arxiv.org/abs/2104.07297
Autor:
Homan, Ward, Montarges, Miguel, Pimpanuwat, Bannawit, Richards, Anita M. S., Wallstrom, Sofia H. J., Kervella, Pierre, Decin, Leen, Zijlstra, Albert, Danilovich, Taissa, de Koter, Alex, Menten, Karl, Sahai, Raghvendra, Plane, John, Lee, Kelvin, Waters, Rens, Baudry, Alain, Wong, Ka Tat, Millar, Tom J., Van de Sande, Marie, Lagadec, Eric, Gobrecht, David, Yates, Jeremy, Price, Daniel, Cannon, Emily, Bolte, Jan, De Ceuster, Frederik, Herpin, Fabrice, Nuth, Joe, Sindel, Jan Philip, Kee, Dylan, Grey, Malcolm D., Etoka, Sandra, Jeste, Manali, Gottlieb, Carl A., Gottlieb, Elaine, McDonald, Iain, Mellah, Ileyk El, Muller, Holger S. P.
Publikováno v:
A&A 644, A61 (2020)
The nebular circumstellar environments of cool evolved stars are known to harbour a rich morphological complexity of gaseous structures on different length scales. A large part of these density structures are thought to be brought about by the intera
Externí odkaz:
http://arxiv.org/abs/2010.05509
Autor:
Kamiński, Tomasz, Tylenda, Romuald, Menten, Karl M., Karakas, Amanda, Winters, Jan Martin, Breier, Alexander A., Wong, Ka Tat, Giesen, Thomas F., Patel, Nimesh A.
Decades ago, $\gamma$-ray observatories identified diffuse Galactic emission at 1.809 MeV originating from $\beta^+$ decays of an isotope of aluminium, $^{26}$Al, that has a mean-life time of 1.04 Myr. Objects responsible for the production of this r
Externí odkaz:
http://arxiv.org/abs/1807.10647
The circumstellar envelope of the hypergiant star IRC+10420 has been traced as far out in SiO J=2-1 as in CO J = 1-0 and CO J = 2-1, in dramatic contrast with the centrally condensed (thermal) SiO- but extended CO-emitting envelopes of giant and supe
Externí odkaz:
http://arxiv.org/abs/1710.05543
Autor:
Ohnaka, Keiichi1 k1.ohnaka@gmail.com, Wong, Ka Tat2
Publikováno v:
Proceedings of the International Astronomical Union. Dec2022, Vol. 18 Issue S380, p356-358. 3p.
Autor:
Decin, Leen, Gottlieb, Carl, Richards, Anita, Baudry, Alain, Danilovich, Taissa, Cannon, Emily, Ceulemans, Thomas, De Ceuster, Frederik, De Koter, Alex, El Mellah, Ileyk, Etoka, Sandra, Gottlieb, Elaine, Gray, Malcolm, Herpin, Fabrice, Homan, Ward, Jeste, Manali, Kervella, Pierre, Maes, Silke, Malfait, Jolien, Marinho, Louise, Menten, Karl, Millar, Tom, McDonald, Iain, Montargès, Miguel, Müller, Holger, Pimpanuwat, Bannawit, Plane, John, Sahai, Ragvendra, Van De Sande, Marie, Wallström, Sofia, Wong, Ka Tat, Consortium, The ATOMIUM
The goals of the Atacama Large Millimeter/submillimeter Array (ALMA) Large Programme ATOMIUM are to obtain a quantitative understanding of the chemical and physical processes that govern the phase transition from small gaseous molecules to dust grain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::086ea3a407f7b3627543d5c6f86e8026
Autor:
Wong, Ka Tat
HCN is one of the most abundant molecules in the circumstellar envelopes of carbon-rich AGB stars. Recent APEX surveys have revealed widespread presence of HCN maser emission in the innermost regions of these envelopes at millimetre wavelengths. Besi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::632e8a1c85f5e31c79e76b29eceb5c01