The Long Bar in the Milky Way: Corroboration of an Old Hypothesis

Bibcode
2007AJ....133..154L
DOI
10.1086/509605
López-Corredoira, M.; Cabrera-Lavers, A.; Mahoney, T. J.; Hammersley, P. L.; Garzón, F.; González-Fernández, C.
Referencia bibliográfica

The Astronomical Journal, Volume 133, Issue 1, pp. 154-161.

Fecha de publicación:
1
2007
Número de autores
6
Número de autores del IAC
6
Número de citas
97
Número de citas referidas
77
Descripción
Recent Galactic Legacy Infrared Mid-Plane Survey Extraordinaire data have further confirmed the hypothesis of the existence of an in-plane long bar different from the bulge of the Milky Way with the same characteristics as emphasized some years ago by our team. In this paper we present two new analyses that corroborate recent and earlier claims concerning the existence in our Galaxy of a long, flat bar with approximate dimensions of 7.8 kpc×1.2 kpc×0.2 kpc and a position angle of approximately 43°: (1) star counts with 2MASS All-Sky Data Release and Midcourse Space Experiment data, which give an excess in the plane region along 0deg
Tipo
Con árbitro

Te puede interesar

  • Con árbitro
    Accurate modeling of the forward-scattering Hanle effect in the chromospheric Ca I 4227 Å line
    Context. Measurable linear scattering polarization signals have been predicted and detected at the solar disk center in the cores of chromospheric lines. These forward-scattering polarization signals, which are of high interest for magnetic field diagnostics, have always been modeled either under the assumption of complete frequency redistribution
    Belluzzi, Luca et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024A&A...691A.278B
    Número de citas
    0
  • Con árbitro
    Hints of auroral and magnetospheric polarized radio emission from the scallop-shell star 2MASS J05082729–2101444
    Scallop-shell stars, a recently discovered class of young M dwarfs, show complex optical light curves that are characterized by periodic dips as well as other features that are stable over tens to hundreds of rotation cycles. The origin of these features is not well-understood. 2MASS J05082729‑2101444 is a ∼25 Myr old scallop-shell star that was
    Kaur, Simranpreet et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024A&A...691L..17K
    Número de citas
    0
  • Con árbitro
    Coronal and chromospheric activity of Teegarden's star
    Teegarden's star is a late-type M-dwarf planet host, typically showing only rather low levels of activity. In this paper we present an extensive characterisation of this activity at photospheric, chromospheric, and coronal levels. We specifically investigated TESS observations of Teegarden's star, which showed two very large flares with an
    Fuhrmeister, B. et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024A&A...691A.208F
    Número de citas
    0