Triangulum galaxy viewed by Planck

Abstract

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.

8 pages, 8 figures, in press on Astronomy and Astrophysics, main journal

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Cited by in corpus (13)

• The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) I. Ultraviolet to Infrared Photometry of 22 Million Stars in M33
• Messier 81's Planck view vs its halo mapping
• Probing gaseous galactic halos through the rotational kSZ effect
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• The rotational kinetic Sunyaev-Zeldovich contribution to the temperature asymmetry toward the M31 halo
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• Seeing the halo rotation of nearby spiral galaxies using Planck data
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• Messier 90 galactic halo rotation in the microwaves
• The Baryonic Mass Estimates of the Milky Way Halo in the form of High Velocity Clouds
• On the role of dust in the microwave emission of galactic halos