Chemical abundances and masses of the haloes around the planetary nebulae NGC 6543 and NGC 6826

Bibcode
1989A&A...222..219M
Manchado, A.; Pottasch, S. R.
Bibliographical reference

Astronomy and Astrophysics (ISSN 0004-6361), vol. 222, no. 1-2, Sept. 1989, p. 219-226.

Advertised on:
9
1989
Number of authors
2
IAC number of authors
1
Citations
40
Refereed citations
34
Description
Spatial resolved low resolution spectroscopy of the haloes around the planetary nebulae NGC 6543 and NGC 6826 were conducted. The results imply that the radiation is thermal and not due to dust reflection. From those data chemical abundances and masses were calculated. Chemical abundances decrease in the haloes, while masses increase up to ten times in NGC 6543 reaching a value of 1 solar mass. The mass loss required to form these haloes coincides with that expected at the beginning of the evolution off the AGB.
Type
Refereed
Planetary nebulae
Red giant stars
Stellar evolution

It may interest you

  • Refereed
    Constraining the TeV gamma-ray emission of SN 2024bch, a possible type IIn-L from a red supergiant progenitor: Multiwavelength observations and analysis of the progenitor
    We present very high-energy optical photometry and spectroscopic observations of SN 2024bch in the nearby galaxy NGC 3206 (∼20 Mpc). We used gamma-ray observations performed with the first Large-Sized Telescope (LST-1) of the Cherenkov Telescope Array Observatory (CTAO) and optical observations with the Liverpool Telescope (LT) combined with data
    Abe, K. et al.

    Advertised on:

    10
    2025
    Bibcode
    2025A&A...702A.125A
    Citations
    0
  • Refereed
    An ALMA Band 7 survey of SDSS/Herschel quasars in Stripe 82: I. The properties of the 870 micron counterparts
    Context. Over the past 15 years, studies of quasars in the far-infrared (FIR) have reported host luminosities ranging from 10 12 to 10 14 L ⊙. These luminosities, often derived from Herschel/SPIRE photometry, suggest star formation rates (SFRs) of up to several thousand M ⊙ yr ‑1, positioning them among the most luminous starburst galaxies in the
    Hatziminaoglou, E. et al.

    Advertised on:

    10
    2025
    Bibcode
    2025A&A...702A.183H
    Citations
    0
  • Refereed
    Transit timing variations in HIP 41378: CHEOPS and TESS confirm a non-transiting sixth planet in the system
    In multiple-planet systems, gravitational interactions of exoplanets could lead to transit timing variations (TTVs), whose amplitude becomes significantly enhanced when planets are in or near mean-motion resonances (MMRs), making them more easily detectable. In cases where both TTVs and radial velocity (RV) measurements are available, combined
    Leonardi, P. et al.

    Advertised on:

    10
    2025
    Bibcode
    2025A&A...702A.211L
    Citations
    0