Dr Bärbel S. Koribalski · evolution models. The LVHIS Galaxy Atlas is ideal for further studies...
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FOR FURTHER INFORMATION Figure 1: The grand-design spiral galaxy Messier 83 is one of largest nearby galaxies (HI extent ~ 100 kpc). Shown above are the results of HI 21-cm mosaicking with CSIRO’s Australia Telescope Compact Array (ATCA). The mean HI velocity field (left) highlights the warped nature of the disk, while the HI gas distribution (right) shows the bright inner disk and extended outer disk, consisting of streams and a spectacular tidal tail wrapping around to the eastern side. REFERENCES Koribalski, B.S. et al. 2018, MNRAS 478, 1611 Oh, S.-H. et al. 2018, MNRAS 473, 3256 Wang, J., Koribalski, B.S. et al. 2017, MNRAS 472, 3029 Shao, L., Koribalski, B.S. et al. 2018, MNRAS 479, 3509 Wang, J., Koribalski, B.S. et al. 2016, MNRAS 460, 2143 Kamphuis, P., et al, 2015, MNRAS 452, 3139 The kinematics of large HI disk galaxies The Local Volume HI Survey'' (LVHIS, Koribalski et al. 2018) provides detailed hydrogen intensity and velocity maps of nearby galaxies. The distribution of cold hydrogen in galaxies typically extends a factor 2—3 beyond their known stellar disks. The shapes and kinematics of the outer disks are of particular interest, tracing the dark matter content to large radii and allowing for detailed comparison with galaxy evolution models. The LVHIS Galaxy Atlas is ideal for further studies of the specific angular momentum. New galaxy surveys, such as WALLABY – the ASKAP HI All Sky Survey – which is expected to detect more than 500 000 galaxies (−90 degr < Dec < +30 degr), will contribute to mapping the large scale structure in the nearby Universe. About 5 000 of the WALLABY detected galaxies are expected to be well resolved, allowing for detailed analysis of their gas kinematics (e.g., Kamphuis et al. 2015, Oh et al. 2018). The Local Volume HI Survey (LVHIS) Dr Bärbel S. Koribalski CSIRO ASTRONOMY AND SPACE SCIENCE Dr. Bärbel S. Koribalski e [email protected] w www.atnf.csiro.au/research/LVHIS Figure 2: Left - Collage of galaxies from the Local Volume HI Survey (LVHIS, Koribalski et al. 2018). Right – M83: GALEX X-UV image compared to the 2X-HI distribution (Koribalski 2015). LVHIS webpage: www.atnf.csiro.au/research/LVHIS Figure 2: Multi-wavelength images – from gas to stars - of M83’s inner disk as seen in the HI and CO spectral lines, GALEX UV , WISE infrared, and optical light. Top: Jarrett et al. (2013) Bottom: HST-Subaro-ESO composite (by Robert Gendler). Contact me for details.
Transcript of Dr Bärbel S. Koribalski · evolution models. The LVHIS Galaxy Atlas is ideal for further studies...
FOR FURTHER INFORMATION
Figure 1: The grand-design spiral galaxy Messier 83 is one of largest nearby galaxies (HI extent ~ 100 kpc). Shown above are the results of HI 21-cm mosaicking with CSIRO’s Australia Telescope Compact Array (ATCA). The mean HI velocity field (left) highlights the warped nature of the disk, while the HI gas distribution (right) shows the bright inner disk and extended outer disk, consisting of streams and a spectacular tidal tail wrapping around to the eastern side.
REFERENCESKoribalski, B.S. et al. 2018, MNRAS 478, 1611Oh, S.-H. et al. 2018, MNRAS 473, 3256Wang, J., Koribalski, B.S. et al. 2017, MNRAS 472, 3029 Shao, L., Koribalski, B.S. et al. 2018, MNRAS 479, 3509Wang, J., Koribalski, B.S. et al. 2016, MNRAS 460, 2143Kamphuis, P., et al, 2015, MNRAS 452, 3139
The kinematics of large HI disk galaxies
The Local Volume HI Survey'' (LVHIS, Koribalski et al. 2018) provides detailed hydrogen intensity and velocity maps of nearby galaxies. The distribution of cold hydrogen in galaxies typically extends a factor 2—3 beyond their known stellar disks. The shapes and kinematics of the outer disks are of particular interest, tracing the dark matter content to large radii and allowing for detailed comparison with galaxy evolution models. The LVHIS Galaxy Atlas is ideal for further studies of the specific angular momentum.
New galaxy surveys, such as WALLABY – the ASKAP HI All Sky Survey – which is expected to detect more than 500 000 galaxies (−90 degr < Dec < +30 degr), will contribute to mapping the large scale structure in the nearby Universe. About 5 000 of the WALLABY detected galaxies are expected to be well resolved, allowing for detailed analysis of their gas kinematics (e.g., Kamphuis et al. 2015, Oh et al. 2018).
The Local Volume HI Survey (LVHIS)Dr Bärbel S. Koribalski
CSIRO ASTRONOMY AND SPACE SCIENCE
Dr. Bärbel S. Koribalski
e [email protected] www.atnf.csiro.au/research/LVHIS
Figure 2: Left - Collage of galaxies from the Local Volume HI Survey (LVHIS, Koribalski et al. 2018). Right – M83: GALEX X-UV image compared to the 2X-HI distribution (Koribalski 2015).
LVHIS webpage: www.atnf.csiro.au/research/LVHIS
Figure 2: Multi-wavelength images –from gas to stars - of M83’s inner disk as seen in the HI and CO spectral lines, GALEX UV , WISE infrared, and optical light. Top: Jarrett et al. (2013) Bottom: HST-Subaro-ESO composite (by Robert Gendler).
Contact me for details.
