Zobrazeno 1 - 10
of 304
pro vyhledávání: '"De Marco, Orsola"'
Autor:
Iskandarli, Leyla, Farihi, Jay, Lothringer, Joshua D., Parsons, Steven G., De Marco, Orsola, Rauch, Thomas
The Helix is a visually striking and the nearest planetary nebula, yet any companions responsible for its asymmetric morphology have yet to be identified. In 2020, low-amplitude photometric variations with a periodicity of 2.8 d were reported based o
Externí odkaz:
http://arxiv.org/abs/2410.03288
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:
Bermúdez-Bustamante, Luis C., De Marco, Orsola, Siess, Lionel, Price, Daniel J., González-Bolívar, Miguel, Lau, Mike Y. M., Mu, Chunliang, Hirai, Ryosuke, Danilovich, Taïssa, Kasliwal, Mansi
We performed numerical simulations of the common envelope (CE) interaction between two intermediate-mass asymptotic giant branch (AGB) stars and their low-mass companions. For the first time, formation and growth of dust in the envelope is calculated
Externí odkaz:
http://arxiv.org/abs/2407.07414
Autor:
Shiber, Sagiv, De Marco, Orsola, Motl, Patrick M., Munson, Bradley, Marcello, Dominic C., Frank, Juhan, Diehl, Patrick, Clayton, Geoffrey C., Skinner, Bennett N., Kaiser, Hartmut, Daiss, Gregor, Pfluger, Dirk, Staff, Jan E.
We study the properties of double white dwarf (DWD) mergers by performing hydrodynamic simulations using the new and improved adaptive mesh refinement code Octo-Tiger. We follow the orbital evolution of DWD systems of mass ratio q=0.7 for tens of orb
Externí odkaz:
http://arxiv.org/abs/2404.06864
Autor:
Kastner, Joel H., Wilner, David, Baez, Paula Moraga, Bublitz, Jesse, De Marco, Orsola, Sahai, Raghvendra, Wootten, Al
We present Submillimeter Array (SMA) mapping of $^{12}$CO $J=2\rightarrow 1$, $^{13}$CO $J=2\rightarrow 1$, and CN $N=2\rightarrow 1$ emission from the Ring-like planetary nebula (PN) NGC 3132, one of the subjects of JWST Early Release Observation (E
Externí odkaz:
http://arxiv.org/abs/2402.11850
Autor:
Bermúdez-Bustamante, Luis C., De Marco, Orsola, Siess, Lionel, Price, Daniel J., González-Bolívar, Miguel, Lau, Mike Y. M., Mu, Chunliang, Hirai, Ryosuke, Danilovich, Taïssa, Kasliwal, Mansi M.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 533, Issue 1, September 2024, Pages 464-481
We performed numerical simulations of the common envelope (CE) interaction between thermally-pulsing asymptotic giant branch (AGB) stars of 1.7~\Msun and 3.7~\Msun, respectively, and a 0.6~\Msun compact companion. We use tabulated equations of state
Externí odkaz:
http://arxiv.org/abs/2401.03644
Autor:
González-Bolívar, Miguel, Bermúdez-Bustamante, Luis C., De Marco, Orsola, Siess, Lionel, Price, Daniel J., Kasliwal, Mansi
We carried out 3D smoothed particle hydrodynamics simulations of the common envelope binary interaction using the approximation of Bowen to calculate the dust opacity in order to investigate the resulting dust-driven accelerations. We have simulated
Externí odkaz:
http://arxiv.org/abs/2306.16609
Autor:
De Marco, Orsola, Akashi, Muhammad, Akras, Stavros, Alcolea, Javier, Aleman, Isabel, Amram, Philippe, Balick, Bruce, De Beck, Elvire, Blackman, Eric G., Boffin, Henri M. J., Boumis, Panos, Bublitz, Jesse, Bucciarelli, Beatrice, Bujarrabal, Valentin, Cami, Jan, Chornay, Nicholas, Chu, You-Hua, Corradi, Romano L. M., Frank, Adam, Garcia-Segura, Guillermo, Garcia-Hernandez, D. A., Garcia-Rojas, Jorge, Gomez-Llanos, Veronica, Goncalves, Denise R., Guerrero, Martin A., Jones, David, Karakas, Amanda I., Kastner, Joel H., Kwok, Sun, Lykou, Foteini, Manchado, Arturo, Matsuura, Mikako, McDonald, Iain, Monreal-Ibero, Ana, Monteiro, Hektor, Baez, Paula Moraga, Morisset, Christophe, Miszalski, Brent, Mohamed, Shazrene S., Montez Jr., Rodolfo, Nordhaus, Jason, de Oliveira, Claudia Mendes, Osborn, Zara, Otsuka, Masaaki, Parker, Quentin A., Peeters, Els, Quint, Bruno C., Quintana-Lacaci, Guillermo, Redman, Matt, Ruiter, Ashley J., Sabin, Laurence, Contreras, Carmen Sanchez, Santander-Garcia, Miguel, Seitenzahl, Ivo, Sahai, Raghvendra, Soker, Noam, Speck, Angela K., Stanghellini, Letizia, Steffen, Wolfgang, Toala, Jesus A., Ueta, Toshiya, Van de Steene, Griet, Villaver, Eva, Ventura, Paolo, Vlemmings, Wouter, Walsh, Jeremy R., Wesson, Roger, van Winckel, Hans, Zijlstra, Albert A.
Publikováno v:
Nature Astronomy, 2022, Vol. 6, p. 1421
Planetary nebulae (PNe), the ejected envelopes of red giant stars, provide us with a history of the last, mass-losing phases of 90 percent of stars initially more massive than the Sun. Here, we analyse James Webb Space Telescope (JWST) Early Release
Externí odkaz:
http://arxiv.org/abs/2301.02775
Autor:
Roepke, Friedrich K., De Marco, Orsola
When the primary star in a close binary system evolves into a giant and engulfs its companion, its core and the companion temporarily orbit each other inside a common envelope. Drag forces transfer orbital energy and angular momentum to the envelope
Externí odkaz:
http://arxiv.org/abs/2212.07308
Autor:
Bollen, Dylan, Kamath, Devika, Van Winckel, Hans, De Marco, Orsola, Verhamme, Olivier, Kluska, Jacques, Wardle, Mark
Publikováno v:
A&A 666, A40 (2022)
We focus on post-asymptotic giant branch (post-AGB) binaries and study the interaction between the different components of these complex systems. These components comprise the post-AGB primary, a main sequence secondary, a circumbinary disk, as well
Externí odkaz:
http://arxiv.org/abs/2208.08752