@Article{DoiNKMACRKTTMSAVHHSAB:2024:ToImSa,
               author = "Doi, Yasuo and Nakamura, Kengo and Kawabata, Koji S. and 
                         Matsumura, Masafumi and Akitaya, Hiroshi and Coud{\'e}, Simon and 
                         Rodrigues, Claudia Vilega and Kwon, Jungmi and Tamura, Motohide 
                         and Tahani, Mehrnoosh and Magalh{\~a}es, Antonio Mario and 
                         Santos-Lima, Reinaldo and Angarita, Yenifer and Versteeg, 
                         Jos{\'e} and Haverkorn, Marijke and Hasegawa, Tetsuo and Sadavoy, 
                         Sarah and Arzoumanian, Doris and Bastien, Pierre",
          affiliation = "{The University of Tokyo} and {Hiroshima University} and 
                         {Hiroshima University} and {Kagawa University} and {Hiroshima 
                         University} and {Worcester State University} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {The University of 
                         Tokyo} and {The University of Tokyo} and {Stanford University} and 
                         {Universidade de S{\~a}o Paulo (USP)} and {Universidade de 
                         S{\~a}o Paulo (USP)} and {Radboud University} and {Radboud 
                         University} and {Radboud University} and {National Astronomical 
                         Observatory of Japan} and {Queen’s University} and {National 
                         Astronomical Observatory of Japan} and {Universit{\'e} de 
                         Montr{\'e}al}",
                title = "Tomographic Imaging of the Sagittarius Spiral Arm's Magnetic Field 
                         Structure",
              journal = "Astrophysical Journal",
                 year = "2024",
               volume = "961",
               number = "1",
                pages = "e13",
             abstract = "The Galactic global magnetic field is thought to play a vital role 
                         in shaping Galactic structures such as spiral arms and giant 
                         molecular clouds. However, our knowledge of magnetic field 
                         structures in the Galactic plane at different distances is 
                         limited, as measurements used to map the magnetic field are the 
                         integrated effect along the line of sight. In this study, we 
                         present the first ever tomographic imaging of magnetic field 
                         structures in a Galactic spiral arm. Using optical stellar 
                         polarimetry over a 17 \′ × 10 \′ field of view, we 
                         probe the Sagittarius spiral arm. Combining these data with 
                         stellar distances from the Gaia mission, we can isolate the 
                         contributions of five individual clouds along the line of sight by 
                         analyzing the polarimetry data as a function of distance. The 
                         observed clouds include a foreground cloud (d < 200 pc) and four 
                         clouds in the Sagittarius arm at 1.23, 1.47, 1.63, and 2.23 kpc. 
                         The column densities of these clouds range from 0.5 to 2.8 × 1021 
                         cm\−2. The magnetic fields associated with each cloud show 
                         smooth spatial distributions within their observed regions on 
                         scales smaller than 10 pc and display distinct orientations. The 
                         position angles projected on the plane of the sky, measured from 
                         the Galactic north to the east, for the clouds in increasing order 
                         of distance are 135°, 46°, 58°, 150°, and 40°, with uncertainties 
                         of a few degrees. Notably, these position angles deviate 
                         significantly from the direction parallel to the Galactic plane.",
                  doi = "10.3847/1538-4357/ad0fe2",
                  url = "http://dx.doi.org/10.3847/1538-4357/ad0fe2",
                 issn = "0004-637X and 1538-4357",
             language = "en",
           targetfile = "Doi_2024_ApJ_961_13.pdf",
        urlaccessdate = "04 maio 2024"
}