The Distance and Motion of the Maffei Group

Abstract

It has recently been suggested that the nearby galaxies Maffei 1 and 2 are further in distance than previously thought, such that they no longer are members of the same galaxy group as IC 342. We reanalyze near-infrared photometry from the Hubble Space Telescope, and find a distance to Maffei 2 of $5.73\pm 0.40$ Mpc. With this distance, the Maffei Group lies 2.5 Mpc behind the IC 342 Group and has a peculiar velocity toward the Local Group of $-128\pm 33$ km/s. The negative peculiar velocities of both of these distinct galaxy groups are likely the manifestation of void expansion from the direction of Perseus-Pisces.

6 pages, 2 figures, Accepted to ApJL (replacement adjusts/fixes luminosities in table 1)

References in corpus (6)

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• I Zw 18 revisited with HST/ACS and Cepheids: New Distance and Age
• Action Dynamics of the Local Supercluster
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• The Extragalactic Distance Database: The Color-Magnitude Diagrams and Tip of the Red Giant Branch Distances Catalog
• MCR-TRGB: A Multiwavelength-Covariant, Robust Tip of the Red Giant Branch Measurement Method
• Tip of the Red Giant Branch Distances with JWST. II. I-band Measurements in a Sample of Hosts of 10 SN Ia Match HST Cepheids
• 36 GHz methanol lines from nearby galaxies: maser or quasi-thermal emission?
• KKH 22, the first dwarf spheroidal satellite of IC 342
• HINORA, a method for detecting ring-like structures in 3D point distributions I: application to the Local Volume Galaxy catalogue