A carbon star outflow envelope about IC 418

Bibcode
1990Ap&SS.171..173P
DOI
10.1007/BF00646841
Phillips, J. P.; Riera, A.; Mampaso, A.
Referencia bibliográfica

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640X), vol. 171, no. 1-2, Sept. 1990, p. 173-176.

Fecha de publicación:
9
1990
Número de autores
3
Número de autores del IAC
0
Número de citas
4
Número de citas referidas
4
Descripción
The results of near-infrared mapping, optical spectroscopy, and millimetric CO J = 2-1 observations of the halo about IC 418 are presented. As a result, it is confirmed that NIR emission extends outside of the principal emission shell, and into a zone characterized by weak optical grain scattering and (in all probability) strong FIR emission. An analysis of the optical and FIR data suggests an overall shell mass of 0.026 solar mass (for an assumed distance 0.412 kpc), although the absence of associated CO emission suggests that the shell, if neutral, must possess a relatively low molecular abundance.
Tipo
Sin árbitro
Estrellas de carbono
Nebulosas planetarias

Te puede interesar

  • Sin árbitro
    First light and results for atmospheric characterization with The Near Infra-Red Planet Searcher (NIRPS)

    NIRPS is a new fiber-fed high spectral resolution (~80k) spectrograph assisted by adaptive optics installed on the 3.6m telescope of ESO at LaSilla, Chile. Operated simultaneously with HARPS, NIRPS covers the Y, J, and H bands. The commissioning phase demonstrated high stability for time-series observations along precise radial velocities reaching

    Allart, Romain et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024ESS.....562419A
    Número de citas
    0
  • Sin árbitro
    Nodal Precession of a Hot Jupiter Transiting the Edge of a Late A-Type Star TOI-1518

    TOI-1518b, a hot Jupiter around a late A-type star, is one of the few planetary systems that transit the edge of the stellar surface (the impact parameter b~0.9) among hot Jupiters around hot stars (Cabot et al. 2021). The host star's high rotation speed (Vsini s~85 km s -1) and the planet's nearly polar orbit (λ~120 deg) may cause a nodal

    Watanabe, Noriharu et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024ESS.....561705W
    Número de citas
    0
  • Sin árbitro
    Observational evidence of different formation mechanisms of Solar System-type architectures across spectral types

    Despite being the most abundant classes of known exoplanets, super-Earths and mini-Neptunes are absent in our Solar System, and the exact reason for this is still unknown. Some models suggest that cold-Jupiters play a major role in the formation of inner low-mass planets. This could explain the current architecture of our Solar System, and the

    Pinamonti, Matteo et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024ESS.....560801P
    Número de citas
    0