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- W2111810805 abstract "We report the discovery of a very H i-massive disc galaxy, HIZOA J0836−43, at a velocity of vhel= 10 689 km s−1, corresponding to a distance of 148 Mpc (assuming H0= 75 km s−1 Mpc−1). It was found during the course of a systematic H i survey of the southern Zone of Avoidance (ZOA) (|b| ≤ 5°) with the multibeam system at the 64-m Parkes radio telescope. Follow-up observations with the Australia Telescope Compact Array reveal an extended H i disc. We derive an H i mass of 7.5 × 1010 M⊙. Using the H i radius, we estimate a total dynamical mass of 1.4 × 1012 M⊙, similar to the most massive known disc galaxies such as Malin 1. HIZOA J0836−43 lies deep in the ZOA where the optical extinction is very high, AB= 9.8 mag. However, in the near-infrared (NIR) wavebands, where the extinction is considerably lower, HIZOA J0836−43 is clearly detected by both the Deep Near Infrared Survey of the Southern Sky (DENIS) and Two-Micron All-Sky Survey (2MASS). Deep Anglo-Australian Telescope NIR (Ks and H band) images show that HIZOA J0836−43 is an inclined disc galaxy with a prominent bulge (scalelength 2.5 arcsec or 1.7 kpc), and an extended disc (scalelength 7 arcsec or 4.7 kpc) which can be traced along the major axis out to a radius of 20 arcsec or 13.4 kpc (at 20 mag arcsec−2 in Ks). The H i disc is much more extended, having a radius of 66 kpc at 1 M⊙ pc−2. Detections in the radio continuum at 1.4 GHz and at 60 μm (IRAS) are consistent with HIZOA J0836−43 forming stars at a rate of ∼35 M⊙ yr−1. We compare the properties of HIZOA J0836−43 with those of the most H i-massive galaxies currently known, UGC 4288, UGC 1752 and Malin 1, all of which are classified as giant low surface brightness galaxies." @default.
- W2111810805 created "2016-06-24" @default.
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- W2111810805 date "2006-06-07" @default.
- W2111810805 modified "2023-10-06" @default.
- W2111810805 title "A massive spiral galaxy in the Zone of Avoidance★" @default.
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- W2111810805 doi "https://doi.org/10.1111/j.1365-2966.2006.10414.x" @default.
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