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
    High-resolution observations of recurrent jets from an arch filament system
    Context. Solar jets are collimated plasma ejections along magnetic field lines observed in hot (extreme-ultraviolet (EUV) jets) and cool (chromospheric surges) temperature diagnostics. Their trigger mechanisms and the relationship between hot and cool jets are still not completely understood. Aims. We aim to investigate the generation of a sequence
    Joshi, Reetika et al.

    Advertised on:

    11
    2024
    Bibcode
    2024A&A...691A.198J
    Citations
    0
  • Refereed
    KISS: Instrument Description and Performance
    Kinetic inductance detectors (KIDs) have been proven as reliable systems for astrophysical observations, especially in the millimeter range. Their compact size enables them to optimally fill the focal plane, thus boosting sensitivity. The KIDs Interferometric Spectral Surveyor (KISS) instrument is a millimeter camera that consists of two KID arrays
    Macías-Pérez, J. F. et al.

    Advertised on:

    11
    2024
    Bibcode
    2024PASP..136k4505M
    Citations
    0