Esta web estará fuera de servicio por mantenimiento, mañana 15 de mayo de 7:00 a 9:30 

The Onset of Photoionization in Post-AGB Stars

Bibcode
2002RMxAC..12..157M
Manchado, A.; Domínguez-Tagle, C.; García-Hernández, D. A.; Prada, F.; García-Lario, P.; Conway, G.
Referencia bibliográfica

Ionized Gaseous Nebulae, a Conference to Celebrate the 60th Birthdays of Silvia Torres-Peimbert and Manuel Peimbert, Mexico City, November 21-24, 2000 (Eds. W. J. Henney, J. Franco, M. Martos, & M. Peña) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 12, pp. 157-157 (2002) (http://www.astroscu.unam.mx/~rmaa/)

Fecha de publicación:
2
2002
Número de autores
6
Número de autores del IAC
1
Número de citas
0
Número de citas referidas
0
Descripción
During the post-AGB phase the dust shell detaches from the central star and dust temperatures varies between 100 and 200 K. In order to study the onset of photo-ionization in post-AGB stars, IRSPEC near-infrared spectroscopy of 40 IRAS sources from the Point Source Catalogue was conducted. In 27 of the post-AGB observed Br gamma is detected. In addition, molecular emission lines of H[2] 1-0 S(1) and 2-1 S(1) were detected in 11 objects. The observations show that all the sources but one, with molecular emission, exhibit photo-ionization. A detailed description and discussion of the results are presented.
Tipo
Sin árbitro
Materia circunestelar
Nebulosas planetarias

Te puede interesar

  • Sin árbitro
    Constraining the core-rotation rate along the red-giant evolution
    The evolution of the core rotation rate of red giant stars is a key parameter in understanding the stellar behavior in the late phases of stellar evolution. Thanks to the mixed-dipole modes, we can constrain the core rotation and internal rotational gradient as a star advances through the red-giant phase. This master thesis presents a pipeline
    Muntean, N. et al.

    Fecha de publicación:

    3
    2024
    Bibcode
    2024aecc.conf...34M
    Número de citas
    0
  • Sin árbitro
    Identification of Superclusters and their Properties in the Sloan Digital Sky Survey
    Superclusters are the largest massive structures in the cosmic web on tens to hundreds of megaparsecs (Mpc) scales. They are the largest assembly of galaxy clusters in the Universe. Apart from a few detailed studies of such structures, their evolutionary mechanism is still an open question. In order to address and answer the relevant questions, a
    Sankhyayan, Shishir et al.

    Fecha de publicación:

    1
    2024
    Bibcode
    2024asi..confP..81S
    Número de citas
    0
  • Sin árbitro
    Rapid multiwavelength variability reveals jet emission in the black hole binary V404 Cygni in quiescence
    Spitzer Space Telescope observations of several quiescent black hole low mass X-ray binaries (LMXBs) have shown mid-infrared excesses above the emission of a companion star. The excess has been proposed to originate from either a relativistic jet or circumbinary disk. If the mid-IR originates in a jet, then it probes the region closest to the black
    Borowski, Eric et al.

    Fecha de publicación:

    5
    2024
    Bibcode
    2024HEAD...2130105B
    Número de citas
    0