Akademska digitalna zbirka SLovenije - logo
E-viri
Recenzirano Odprti dostop
  • A VLBI resolution of the Pl...
    Melis, Carl; Reid, Mark J.; Mioduszewski, Amy J.; Stauffer, John R.; Bower, Geoffrey C.

    Science (American Association for the Advancement of Science), 08/2014, Letnik: 345, Številka: 6200
    Journal Article

    Because of its proximity and its youth, the Pleiades open cluster of stars has been extensively studied and serves as a cornerstone for our understanding of the physical properties of young stars. This role is called into question by the “Pleiades distance controversy,” wherein the cluster distance of 120.2 ± 1.5 parsecs (pc) as measured by the optical space astrometry mission Hipparcos is significantly different from the distance of 133.5 ± 1.2 pc derived with other techniques. We present an absolute trigonometric parallax distance measurement to the Pleiades cluster that uses very long baseline radio interferometry (VLBI). This distance of 136.2 ± 1.2 pc is the most accurate and precise yet presented for the cluster and is incompatible with the Hipparcos distance determination. Our results cement existing astrophysical models for Pleiades-age stars.