Zobrazeno 1 - 10
of 245
pro vyhledávání: '"A. Castellanos-Ramírez"'
Autor:
Rodríguez-González, Ary, Rivera-Ortiz, Pedro Ruben, Castellanos-Ramírez, Antonio, Raga, Alejandro C., Hernández-Martínez, Liliana, Cantó, Jorge, Zapata, Luis A., Robles-Valdez, Fátima
We present reactive gasdynamic, axisymmetric simulations of dense, high velocity clumps for modelling the CO streamers observed in Orion BN/KL. We have considered 15 chemical species, a cooling function for atomic and molecular gas, and heating throu
Externí odkaz:
http://arxiv.org/abs/2212.10752
Autor:
Meyer, D. M. -A., Velazquez, P. F., Petruk, O., Chiotellis, A., Pohl, M., Camps-Farina, F., Petrov, M., Reynoso, E. M., Toledo-Roy, J. C., Schneiter, E. M., Castellanos-Ramirez, A., Esquivel, A.
Core-collapse supernova remnants are the gaseous nebulae of galactic interstellar media (ISM) formed after the explosive death of massive stars. Their morphology and emission properties depend both on the surrounding circumstellar structure shaped by
Externí odkaz:
http://arxiv.org/abs/2206.14495
We examine the evolution and emission of the supernova remnant (SNR) CTB109 using three-dimensional magnetohydrodynamics simulations. The SNR evolves in a medium divided by a plane interface into two media with different densities and pressure equili
Externí odkaz:
http://arxiv.org/abs/2110.09227
Autor:
Castellanos-Ramírez, A., Rodríguez-González, A., Meliani, Z., Rivera-Ortiz, P. R., Raga, A. C., Cantó, J.
Some red giant envelopes present spiral structures (seen either in dust scattered stellar continuum or in molecular line emission), the most striking example probably being AFGL 3068. This object has been modeled (both analytically and numerically) i
Externí odkaz:
http://arxiv.org/abs/2108.06475
We present a simple model in which the bullets that produce the "Orion fingers" (ejected by the BN/KL object) are interpreted as protoplanets or low mass protostars in orbit around a high mass star that has a supernova explosion. As the remnant of th
Externí odkaz:
http://arxiv.org/abs/2107.11189
Autor:
Castellanos-Ramírez, A., Raga, A. C., Cantó, J., Rodríguez-González, A., Hernández-Martínez, L.
High velocity clumps joined to the outflow source by emission with a "Hubble law" ramp of linearly increasing radial velocity vs. distance are observed in some planetary nebulae and in some outflows in star formation regions. We propose a simple mode
Externí odkaz:
http://arxiv.org/abs/2104.03536
Autor:
Raga, A. C., Rodriguez-Gonzalez, A., Hernande-Martinez, L., Canto, J., Castellanos-Ramirez, A.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Letters, advanced access bibcode: 2020MNRAS.tmpL.189R 2020MNRAS.tmpL.189R
We present a model of a hypersonic, collimated, "single pulse" outflow, produced by an event with an ejection velocity that first grows, reaches a peak, and then decreases again to zero velocity in a finite time (simultaneously, the ejection density
Externí odkaz:
http://arxiv.org/abs/2010.06680
Autor:
Rodríguez-González, A., Meliani, Z., Sánchez-Cruces, M., Rivera-Ortiz, P. R., Castellanos-Ramírez, A.
Publikováno v:
A&A 631, A170 (2019)
The interstellar bubble RCW 120 seen around a type O runaway star is driven by the stellar wind and the ionising radiation emitted by the star. The boundary between the stellar wind and interstellar medium (ISM) is associated with the arc-shaped mid-
Externí odkaz:
http://arxiv.org/abs/1909.07150
Autor:
Sánchez-Cruces, Mónica, Castellanos-Ramírez, Antonio, Rosado, Margarita, Rodríguez-González, Ary, Reyes-Iturbide, Jorge
We studied the kinematics of the Galactic bubble RCW 120 in the [SII]\lambda\lambda$6717,6731\AA lines. We measured a LSR radial velocity ranging from ~-74 to ~-6km/s. We found evidence of expansion only in the northeast region of the nebula (from 20
Externí odkaz:
http://arxiv.org/abs/1806.00724
Publikováno v:
Revista Electrónica de Investigación Educativa, Vol 24, Pp 1-17 (2022)
The objective of this research was to identify and characterize actions taken by autonomous public universities in Mexico in response to COVID-19. The study is theoretically grounded in the notion of emergency education, which refers to broad prevent
Externí odkaz:
https://doaj.org/article/288a521f2f6f45e09f1001be5c9cf3fb