Spectral and radial velocity studies of 5 northern central stars of planetary nebulae

Bibcode
1990A&A...229..152M
Mendez, R. H.; Herrero, A.; Manchado, A.
Bibliographical reference

Astronomy and Astrophysics (ISSN 0004-6361), vol. 229, no. 1, March 1990, p. 152-164. Research supported by the Instituto de Astrofisica de Canarias and Universitaetssternwarte Muenchen.

Advertised on:
3
1990
Number of authors
3
IAC number of authors
2
Citations
65
Refereed citations
51
Description
Spectrograms of five bright northern central stars of planetary nebulae (CSPN) are compiled in order to provide spectral descriptions of these stars, with particular attention given to the central stars of NGC 6543 and NGC 6572 (the best examples of the Of WR spectral class) and a comparison of these to less extreme Of CSPN. Results present clear evidence of variations in some emission features in spectra of the central stars of IC 4593, NGC 6826, and NGC 6543, with variation time scales of the order of 1 day or less. No evidence was found of binarity in the central star of NGC 6826, which was previously reported to be a spectroscopic binary.
Type
Refereed
Planetary nebulae
Stellar atmospheres
Radial velocity

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