Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Contreras, Carmen Sánchez"'
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:
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:
Sahai, Raghvendra, Bujarrabal, Valentin, Quintana-Lacaci, Guillermo, Reindl, Nicole, Van de Steene, Griet, Contreras, Carmen Sánchez, Ressler, Michael E.
The planetary nebula (PN) NGC3132 is a striking example of the dramatic but poorly understood, mass-loss phenomena that (1-8) Msun stars undergo during their death throes as they evolve into white dwarfs (WDs). From an analysis of JWST multiwavelengt
Externí odkaz:
http://arxiv.org/abs/2211.16741
Autor:
Khouri, Theo, Vlemmings, Wouter, Tafoya, Daniel, Pérez-Sánchez, Andrés F., Contreras, Carmen Sánchez, Gómez, José F., Imai, Hiroshi, Sahai, Raghvendra
One of the most poorly understood stellar evolutionary paths is that of binary systems undergoing common-envelope evolution, when the envelope of a giant star engulfs the orbit of a companion. Although this interaction leads to a great variety of ast
Externí odkaz:
http://arxiv.org/abs/2112.09689
Autor:
Sahai, Raghvendra, Lee, Chin-Fei, Contreras, Carmen Sanchez, Patel, Nimesh, Morris, Mark R., Claussen, Mark
We present interferometric and single-dish molecular line observations of the interstellar bullet-outflow source IRAS 05506+2414, whose wide-angle bullet spray is similar to the Orion BN/KL explosive outflow and likely arises from an entirely differe
Externí odkaz:
http://arxiv.org/abs/1710.03311
Autor:
Lee, Chin-Fei, Sahai, Raghvendra, Contreras, Carmen Sánchez, Huang, Po-Sheng, Tay, Jeremy Jian Hao
CRL 618 is a well-studied pre-planetary nebula. It has multiple highly collimated optical lobes, fast molecular outflows along the optical lobes, and an extended molecular envelope that consists of a dense torus in the equator and a tenuous round hal
Externí odkaz:
http://arxiv.org/abs/1308.6332
CRL 618 is a well-studied pre-planetary nebula. We have mapped its central region in continuum and molecular lines with the Submillimeter Array at 350 GHz at ~ 0.3" to 0.5" resolutions. Two components are seen in 350 GHz continuum: (1) a compact emis
Externí odkaz:
http://arxiv.org/abs/1305.1731
Autor:
Palau, Aina, Contreras, Carmen Sánchez, Sahai, Raghvendra, Sánchez-Monge, Álvaro, Rizzo, J. Ricardo
The theory of massive star formation currently suffers from a scarce observational base of massive young stellar objects to compare with. In this paper, we present OVRO CO(1-0), 13CO(1-0), C18O(1-0), and 2.6 mm continuum images of the infrared source
Externí odkaz:
http://arxiv.org/abs/1210.2285
Publikováno v:
Astrophysical Journal (Letters) 2011
Binarity is believed to dramatically affect the history and geometry of mass loss in AGB and post-AGB stars, but observational evidence of binarity is sorely lacking. As part of a project to look for hot binary companions to cool AGB stars using the
Externí odkaz:
http://arxiv.org/abs/1108.3597
Autor:
Sahai, Raghvendra, Claussen, Mark, Contreras, Carmen Sánchez, Morris, Mark, Sarkar, Geetanjali
We have made a serendipitous discovery of an enigmatic outflow source, IRAS 05506+2414 (hereafter IRAS 05506), as part of a multi-wavelength survey of pre-planetary nebulae (PPNs). The HST optical and near-infrared images show a bright compact centra
Externí odkaz:
http://arxiv.org/abs/0802.1204