DE PAOLIS, F.,; GURZADYAN, V. G.,; NUCITA, A. A.,; CHEMIN, L.; QADIR, A.,; KASHIN, A. L.,; KHACHATRYAN, H. G.,; SARGSYAN, S.,; YEGORIAN, G.,; INGROSSO, G.,; JETZER, Ph.,; VETRUGNO, D.,

doi:10.1051/0004-6361/201628780

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Astronomy and Astrophysics - A&A. 2016, vol. 593, p. A57

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We used Planck data to study the M33 galaxy and find a substantial temperature asymmetry with respect to its minor axis projected onto the sky plane. This temperature asymmetry correlates well with the HI velocity field at 21 cm, at least within a galactocentric distance of 0.5 degree, and it is found to extend up to about 3 degrees from the galaxy center. We conclude that the revealed effect, that is, the temperature asymmetry and its extension, implies that we detected the differential rotation of the M33 galaxy and of its extended baryonic halo.< Leer menos

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Astrophysics - Astrophysics of Galaxies

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Triangulum galaxy viewed by Planck

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