The Stellar Oxygen Abundance Gradient in M33

Bibcode
1997ApJ...474L.107M
DOI
10.1086/310441
Monteverde, M. I.; Herrero, A.; Lennon, D. J.; Kudritzki, R.-P.
Bibliographical reference

Astrophysical Journal Letters v.474, p.L107

Advertised on:
1
1997
Number of authors
4
IAC number of authors
1
Citations
57
Refereed citations
46
Description
We report here first results concerning stellar oxygen abundances in M33. Non-LTE model atmosphere and non-LTE line formation calculations were used to determine the oxygen abundance of B-type supergiants. By choosing stars located at different projected radial distances to the center of M33, we are able to determine the oxygen abundance gradient, for which we obtain a value of -0.16 +/- 0.06 dex kpc-1. This is the first time that the oxygen stellar abundance gradient has been determined in a spiral galaxy other than the Milky Way.
Type
Refereed
Galaxies

It may interest you

  • Refereed
    An ultra-short-period super-Earth with an extremely high density and an outer companion
    We present the discovery and characterization of a new multi-planetary system around the Sun-like star K2-360 (EPIC 201595106). K2-360 was first identified in K2 photometry as the host of an ultra-short-period (USP) planet candidate with a period of 0.88 d. We obtained follow-up transit photometry, confirming the star as the host of the signal
    Livingston, John H. et al.

    Advertised on:

    11
    2024
    Bibcode
    2024NatSR..1427219L
    Citations
    0
  • Refereed
    Distance estimation of gamma-ray-emitting BL Lac objects from imaging observations
    Aims. The direct redshift determination of BL Lac objects is highly challenging as the emission in the optical and near-infrared bands is largely dominated by the non-thermal emission from the relativistic jet, which points very close to our line of sight. Therefore, the optical spectra of BL Lac objects often show no spectral lines from the host
    Nilsson, K. et al.

    Advertised on:

    11
    2024
    Bibcode
    2024A&A...691A.154N
    Citations
    0
  • Refereed
    Counting stars from the integrated spectra of galaxies
    Over the last few decades, evolutionary population synthesis models have powered an unmatched leap forward in our understanding of galaxies. From dating the age of the first galaxies in the Universe to providing detailed measurements of the chemical composition of nearby galaxies, the success of this approach built upon simple stellar population
    Martín-Navarro, I. et al.

    Advertised on:

    11
    2024
    Bibcode
    2024A&A...691L..10M
    Citations
    0