SciELO - Scientific Electronic Library Online

vol.47 número1Mid-Infrared Observations of Planetary Nebulae detected in the GLIMPSE 3D SurveyUBVR polarimetry of high-galactic latitude carbon stars índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados

  • No hay artículos similaresSimilares en SciELO


Revista mexicana de astronomía y astrofísica

versión impresa ISSN 0185-1101


CAVICHIA, O.; COSTA, R. D. D.  y  MACIEL, W. J. Planetary nebulae in the inner Milky Way II: the Bulge-Disk transition. Rev. mex. astron. astrofis [online]. 2011, vol.47, n.1, pp.49-61. ISSN 0185-1101.

In this work, a sample of planetary nebulae located in the inner-disk and bulge of the Galaxy is used in order to find the galactocentric distance which better separates these two populations, from the point of view of abundances. Statistical distance scales are used to study the distribution of abundances across the disk-bulge interface. A Kolmogorov-Smirnov test is used to find the distance at which the chemical properties of these regions better separate. The results of the statistical analysis indicate that, on the average, the inner population has lower abundances than the outer. Additionally, for the α-element abundances, the inner population does not follow the disk radial gradient towards the galactic center. Based on our results, we suggest a bulge-disk interface at 1.5 kpc, marking the transition between the bulge and inner-disk of the Galaxy as defined by the intermediate mass population.

Palabras clave : Galaxy [abundances]; Galaxy [evolution]; planetary nebulae [general]; techniques [spectroscopic].

        · resumen en Español     · texto en Inglés     · Inglés ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons