Morphology and dynamics of the Milky Way

Start year
1994
Organizational Unit
    General
    Description

    This project consists of two parts, each differentiated but both complementary: morphology and dynamics. Detailed study of the morphology of the Milky Way pretends to provide a data base for the stellar distribution in the most remote and heavily obscured regions of our Galaxy, through the development of semiempirical models based on the information in these catalogues. Kinematic and dynamical analysis, on the other hand, aims to aid our understanding of the origin of these observed features.

    Our group has used a combination of its own data (which will include in the future spectroscopical observations with GRANTECAN/EMIR) and public-domain catalogues either in photometry (DENIS, 2MASS, UKIDSS, VISTA, SDSS) or spectroscopy (SDSS-APOGEE in near infrared, LAMOST). We have gathered detailed information on the stellar distribution of the dominant populations over a wide area of sky containing different structural components: the triaxial bulge, the long bar, the disc, the spiral arms, etc. The components of gas and dust are also a matter of study in infrared, or in microwave (analyses of Galactic contamination over the cosmic microwave background radiation, for instance with WMAP or PLANCK). Our research team has also become part of the Spanish node of Gaia with the idea of orientating part of our work towards the scientific exploitation of this mission, particularly with regard to the identification and study of large scale stellar populations in the Galaxy.

    Principal investigator
    Project staff
    Nieves D. Castro Rodríguez
    Antonio L. Cabrera Lavers
    Collaborators
    Dr.
    P.L. Hammersley
    Dr.
    C. González Fernández
    Dr.
    J. Molgó Sendra
    Dr.
    F. Sylos-Labini
    1. Milky Way's disk much larger than previously thought. See press release of IAC: http://www.iac.es/divulgacion.php?op1=16&id=1385&lang=en

    Related publications

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      We revisit the diagonal ridge feature (diagonal distributions in the R, vφ plane) found in Gaia and present a timing analysis for it between Galactocentric distances of R = 7.5 and 12 kpc, using main-sequence turnoff and OB stars selected from the LAMOST Galactic spectroscopic surveys. We recover the ridge pattern in the R-vφ plane color coded by

      Wang, H. -F. et al.

      Advertised on:

      10
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    • Gaia-DR2 extended kinematical maps. III. Rotation curves analysis, dark matter, and MOND tests

      Context. Recent statistical deconvolution methods have produced extended kinematical maps in a range of heliocentric distances that are a factor of two to three larger than those analysed in Gaia Collaboration (2018, A&A, 616, A11) based on the same data. Aims: In this paper, we use such maps to derive the rotation curve both in the Galactic plane

      Chrobáková, Ž. et al.

      Advertised on:

      10
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      Advertised on:

      9
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    • Mapping the Galactic Disk with the LAMOST and Gaia Red Clump Sample. VI. Evidence for the Long-lived Nonsteady Warp of Nongravitational Scenarios

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      Advertised on:

      7
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      Chrobáková, Ž. et al.

      Advertised on:

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      Advertised on:

      2
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      Advertised on:

      2
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      Advertised on:

      1
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    • Mapping the Galactic Disk with the LAMOST and Gaia Red Clump Sample. III. A New Velocity Substructure and Time Stamps of the Galactic Disk Asymmetry in the Disk between 12 and 15 kpc

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      Advertised on:

      10
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    • Stars and brown dwarfs in the σ Orionis cluster. IV. IDS/INT and OSIRIS/GTC spectroscopy and Gaia DR2 astrometry

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      Caballero, J. A. et al.

      Advertised on:

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    • The Vanishing and Appearing Sources during a Century of Observations Project. I. USNO Objects Missing in Modern Sky Surveys and Follow-up Observations of a “Missing Star”

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      Streblyanska, A. et al.

      Advertised on:

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      López-Corredoira, M. et al.

      Advertised on:

      7
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    • QSO2 outflow characterization using data obtained with OSIRIS at the Gran Telescopio Canarias

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      Advertised on:

      6
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      Advertised on:

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      Advertised on:

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      Advertised on:

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      Sylos Labini, F. et al.

      Advertised on:

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    • Gaia-DR2 extended kinematical maps . I. Method and application

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      Advertised on:

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