| Texto completo | |
| Autor(es): |
Raga, A. C.
;
Osorio-Caballero, J. A.
;
Chan, R. S.
;
Esquivel, A.
;
Rodriguez-Gonzalez, A.
;
Lora, V
;
Rodriguez Ramirez, J. C.
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA; v. 56, n. 1, p. 8-pg., 2020-04-01. |
| Resumo | |
We study self-gravitating, hydrostatic spheres with a polytropic equation of state P proportional to rho(gamma) (where gamma is the specific heat ratio of the gas), considering structures with gamma approximate to 1 as a model for molecular cloud cores with small departures from isothermality. We derive the properties (i.e., mass, radius and center to edge density ratio) as a function of gamma for the maximal stable sphere through an application of \Bonnor's stability criterion". We find that in the gamma = 1 -> 4/3 range the mass of the maximal sphere (for a given central temperature) is almost constant, and that its radius and center to edge density ratio are growing functions of gamma. We therefore have maximal stable, self-gravitating spheres with similar masses, but with increasing center to edge density contrasts for increasing departures from isothermality. (AU) | |
| Processo FAPESP: | 17/12188-5 - Estudo de partículas relativísticas e emissões de alta energia em torno de fontes de buracos negros e jatos por meio de simulações MHD, partículas-em-células (PIC) e transferência radiativa |
| Beneficiário: | Juan Carlos Rodríguez Ramírez |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |