We used Planck data to study the M 33 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°, and it is found to extend up to about 3° 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 M 33 galaxy and of its extended baryonic halo.

Triangulum galaxy viewed by Planck / 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, P.; Vetrugno, D.. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 593:(2016), p. A57. [10.1051/0004-6361/201628780]

Triangulum galaxy viewed by Planck

Vetrugno D.
2016-01-01

Abstract

We used Planck data to study the M 33 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°, and it is found to extend up to about 3° 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 M 33 galaxy and of its extended baryonic halo.
2016
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, P.; Vetrugno, D.
Triangulum galaxy viewed by Planck / 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, P.; Vetrugno, D.. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 593:(2016), p. A57. [10.1051/0004-6361/201628780]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/269473
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