%0 Generic %1 westmeier2017parkes %A Westmeier, T. %A Obreschkow, D. %A Calabretta, M. %A Jurek, R. %A Koribalski, B. S. %A Meyer, M. %A Musaeva, A. %A Popping, A. %A Staveley-Smith, L. %A Wong, O. I. %A Wright, A. %D 2017 %K HI environment function mass %T A deep Parkes HI survey of the Sculptor group and filament: HI mass function and environment %U http://arxiv.org/abs/1709.00780 %X We present the results of a deep survey of the nearby Sculptor group and the associated Sculptor filament taken with the Parkes 64-m radio telescope in the 21-cm emission line of neutral hydrogen. We detect 31 HI sources in the Sculptor group/filament, eight of which are new HI detections. We derive a slope of the HI mass function along the Sculptor filament of $= -1.10^+0.20_-0.11$, which is significantly flatter than the global mass function and consistent with the flat slopes previously found in other low-density group environments. Some physical process, such as star formation, photoionisation or ram-pressure stripping, must therefore be responsible for removing neutral gas predominantly from low-mass galaxies. All of our HI detections have a confirmed or tentative optical counterpart and are likely associated with luminous rather than 'dark' galaxies. Despite a column density sensitivity of about $4 10^17~cm^-2$, we do not find any traces of extragalactic gas or tidal streams, suggesting that the Sculptor filament is, at the current time, a relatively quiescent environment that has not seen any recent major interactions or mergers.

@misc{westmeier2017parkes, abstract = {We present the results of a deep survey of the nearby Sculptor group and the associated Sculptor filament taken with the Parkes 64-m radio telescope in the 21-cm emission line of neutral hydrogen. We detect 31 HI sources in the Sculptor group/filament, eight of which are new HI detections. We derive a slope of the HI mass function along the Sculptor filament of $\alpha = -1.10^{+0.20}_{-0.11}$, which is significantly flatter than the global mass function and consistent with the flat slopes previously found in other low-density group environments. Some physical process, such as star formation, photoionisation or ram-pressure stripping, must therefore be responsible for removing neutral gas predominantly from low-mass galaxies. All of our HI detections have a confirmed or tentative optical counterpart and are likely associated with luminous rather than 'dark' galaxies. Despite a column density sensitivity of about $4 \times 10^{17}~\mathrm{cm}^{-2}$, we do not find any traces of extragalactic gas or tidal streams, suggesting that the Sculptor filament is, at the current time, a relatively quiescent environment that has not seen any recent major interactions or mergers.}, added-at = {2017-09-05T11:25:01.000+0200}, author = {Westmeier, T. and Obreschkow, D. and Calabretta, M. and Jurek, R. and Koribalski, B. S. and Meyer, M. and Musaeva, A. and Popping, A. and Staveley-Smith, L. and Wong, O. I. and Wright, A.}, biburl = {https://www.bibsonomy.org/bibtex/22b7b34455211e40c8472d03bbb990c57/miki}, description = {[1709.00780] A deep Parkes HI survey of the Sculptor group and filament: HI mass function and environment}, interhash = {a642167934688f563acecce8de7efe19}, intrahash = {2b7b34455211e40c8472d03bbb990c57}, keywords = {HI environment function mass}, note = {cite arxiv:1709.00780Comment: 20 pages, 11 figures, 4 tables; accepted for publication in MNRAS}, timestamp = {2017-09-05T11:25:01.000+0200}, title = {A deep Parkes HI survey of the Sculptor group and filament: HI mass function and environment}, url = {http://arxiv.org/abs/1709.00780}, year = 2017 }