NLTE analysis of massive OB stars in open clusters

Bibcode
1990Ap&SS.169....7H
DOI
10.1007/BF00640677
Herrero, A.; Kudritzki, R. P.; Vilchez, J. M.
Bibliographical reference

IAU, European Regional Astronomy Meeting on New Windows to the Universe, 11th, La Laguna, Spain, July 3-8, 1989 Astrophysics and Space Science (ISSN 0004-640X), vol. 169, no. 1-2, July 1990, p. 7-13.

Advertised on:
7
1990
Number of authors
3
IAC number of authors
0
Citations
1
Refereed citations
1
Description
The paper presents a new method for deriving stellar masses and distances using the theory of radiatively driven winds as presented by Kudritzki et al. (1989) and the stellar parameters derived from NLTE spectroscopic analysis. The procedure is illustrated with five stars observed in three open clusters. Comparison with evolutionary tracks indicates a possible discrepancy between the masses and helium abundances (when enhanced) derived from these tracks and those obtained by other methods.
Type
Non-refereed
B stars
O stars
Stellar evolution
Stellar winds

It may interest you

  • Non-refereed
    Massive characterisation of subgiants and red giants with TESS (Kepler and Gaia)
    TESS serves as a formidable tool for investigating stellar variability. Nonetheless, the adaptation of methodologies employed in other space missions, such as Kepler, to deduce long stellar rotation periods or solar-like stellar pulsations has been a challenge. The advent of multiple sectors of data for most stars every two years with the extended
    García, Rafael A. et al.

    Advertised on:

    9
    2024
    Bibcode
    2024tkas.confE.123G
    Citations
    0
  • Non-refereed
    Asteroseismic grid-modelling of the binary system KIC 9163796
    The age of a star cannot be measured but only inferred from observational quantities related to age. For stars in the red-giant phase, classical methods such as isochrone fitting can deliver ages with statistical uncertainties between 30% and 50%. Asteroseismic modelling is known to provide the most precise ages for red giants to date. Furthermore
    Grossmann, Desmond et al.

    Advertised on:

    7
    2024
    Bibcode
    2024tkas.confE..43G
    Citations
    0
  • Non-refereed
    Measuring stellar long surface rotation periods by combining multi-sector/cycle long-cadence data from TESS
    The evolution of surface magnetic features on stars, such as spots and faculae, produces modulations in light curves. These modulations allow us to measure the surface rotation period, P_rot, of stars from the main sequence (e.g., McQuillan et al. 2014; Santos et al. 2019, 2021) to the red-giant (Ceillier et al. 2017) phase. Nevertheless, the
    Palakkatharappil, Dinil Bose et al.

    Advertised on:

    7
    2024
    Bibcode
    2024tkas.confE..93P
    Citations
    0