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10 Result(s)

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  1. No Access

    Chapter and Conference Paper

    Molecules in the AGB Stars of Nearby Galaxies

    We obtained infrared spectra of Asymptotic Giant Branch (AGB) stars in nearby galaxies, and measured the equivalent widths of HCN and C2H2 bands for the carbon-rich stars, and SiO abundances for the oxygen-rich s...

    M. Matsuura, A.A. Zijlstra, J.Th. van Loon… in Planetary Nebulae Beyond the Milky Way (2006)

  2. No Access

    Chapter and Conference Paper

    Molecules in the AGB Stars of Nearby Galaxies

    We obtained infrared spectra of Asymptotic Giant Branch (AGB) stars in nearby galaxies, and measured the equivalent widths of HCN and C2H2 bands for the carbon-rich stars, and SiO abundances for the oxygen-rich s...

    M. Matsuura, A.A. Zijlstra, J.Th. van Loon… in Planetary Nebulae Beyond the Milky Way (2006)

  3. No Access

    Chapter and Conference Paper

    Old Stars in Dwarf Irregular Galaxies: WLM and NGC3109

    We present evidence for the existence of old stellar halos in the dwarf irregular galaxies WLM and NGC3109, located in the outskirts of the Local Group. These halos consist of metal-poor ([Fe/H] < -1) and old (t ...

    D. Minniti, M. Rejkuba, A. A. Zijlstra… in From Extrasolar Planets to Cosmology: The … (2000)

  4. No Access

    Chapter

    Evolution and Mass Loss of AGB Stars in the Small Magellanic Cloud

    To study the final stages of the evolution of stars in the range of 1–8M ⊙ we have started a project on AGB stars in the Small Magellanic Cloud (SMC). Based on the IRAS Faint Source Catalog we have ...

    J. A. D. L. Blommaert, N. R. Trams, K. Okumura… in Astrophysics and Space Science (1998)

  5. No Access

    Chapter

    ISO Spectroscopy of AGB Stars in the Magellanic Clouds

    The study of AGB stars in the Magellanic Clouds has an important advantage over the study of galactic objects because of the known distance to the sources. Unfortunately the sources are relatively faint, makin...

    N. R. Trams, J. A. D. L. Blommaert, A. Heske… in Astrophysics and Space Science (1998)

  6. No Access

    Chapter and Conference Paper

    The Planetary Nebulae in the Sagittarius Dwarf Galaxy

    There are 9 dwarf spheroidal galaxies in the neighbourhood of the Galaxy. The last to be discovered is in Sagittarius (Ibata et al 1994), situated at a distance of 25 kpc and is interacting with the Galaxy. It...

    A. A. Zijlstra, G. Dudziak, J. R. Walsh in Planetary Nebulae (1997)

  7. No Access

    Article

    Evolution and Mass Loss of AGB Stars in the Small Magellanic Cloud

    J.A.D.L. Blommaert, N.R. Trams, K. Okumura… in Astrophysics and Space Science (1997)

  8. No Access

    Article

    ISO Spectroscopy of AGB Stars in the Magellanic Clouds

    N.R. Trams, J.A.D.L. Blommaert, A. Heske, R. Siebenmorgen… in Astrophysics and Space Science (1997)

  9. No Access

    Chapter and Conference Paper

    Imaging the Surfaces of Late-Type Stars

    We discuss the prospects for resolving the disks of red-giants and Mira variables with the VLT and the VLTI. We also describe infrared aperture-masking observations with the NTT, from which we have measured an...

    T. R. Bedding, O. von der Lühe, A. A. Zijlstra in Science with the VLT (1995)

  10. No Access

    Chapter and Conference Paper

    The Asymptotic Giant Branch in the LMC, SMC and the Galactic Center

    Mass loss on the AGB is extremely important for galactic chemical evolution but is poorly understood. A data set of a coherently selected sample of AGB stars is required to resolve this issue. The VLT with its...

    H. U. Käufl, L. B. F. M. Waters, G. Wiedemann, A. A. Zijlstra in Science with the VLT (1995)