Total number of planetary nebulae in different galaxies and the PN distance scale.

Details Total number of planetary nebulae in different galaxies and the PN distance scale. Total number of planetary nebulae in different galaxies and the PN distance scale.

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990rmxaa..20..119p&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica, 20, 119 (1990)

Astronomy and Astrophysics

Astronomy

43

Scientific paper

RESUMEN A partir de una muestra de quince galaxias se encuentra que la tasa de natalidad de nebulosas planetarias por unidad de luminosidad, , disminuye al aumentar la luminosidad y al aumentar (B - V)0. Se discuten posibles explicaciones para estos resultados. Se estima el valor de para la Galaxia y a partir de el se encuentra que el numero total de nebulosas planetarias en nuestra galaxia con R < 0.64 pc- es de 7200 j 1800. El valor galactico de implica que la mayorfa de las estrellas de masa intermedia pasa por la etapa de nebulosa planetaria. El valor galactico de , la tasa de mortalidad estelar por unidad de luminosidad y la tasa de natalidad de enanas blancas favorecen escalas de distancias largas para nebulosas planetarias, como la de Cudworth (1974) y la de Mallik y Peimbert (1988). ABSTRACT From a sample of fifteen galaxies it is found that the birth rate of PN per unit luminosity, , decreases with increasing luminosity and with increasing (B - V)0 possible reasons for these relationships are discussed. The value for the Galaxy is estimated and, from it, a total number of PN of 7200 # 1800 wid R < 0.64 pc is obtained. The galactic value implies that most of the intermediate mass stars go through the PN stage. The galactic value, the stellar death rate per unit luminosity and the white dwarf birth rate are in favor of long distance scales to PN like those of Cudworth (1974) and Mallik and (1988). Key wonis: NEBULAE.PLANETARY - STARS-EVOLUTION - STARS-SThLIAR STA. S

Affiliated with

Also associated with

No associations

Rating

Total number of planetary nebulae in different galaxies and the PN distance scale. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Total number of planetary nebulae in different galaxies and the PN distance scale., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Total number of planetary nebulae in different galaxies and the PN distance scale. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1639353