Please note, due to essential maintenance online transactions will not be possible between 02:30 and 04:00 BST, on Tuesday 17th September 2019 (22:30-00:00 EDT, 17 Sep, 2019). We apologise for any inconvenience.
To send content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to .
To send content items to your Kindle, first ensure firstname.lastname@example.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
We present GBT neutral hydrogen observations of two nearby galaxy groups. The M 81/M 82 and NGC 2403 groups represent opposite ends of the range in intensity of galaxy interactions, and have remarkably different properties in Hi. We have discovered 5 new Hi clouds in the highly interacting M 81/M 82 group of galaxies. Based on the velocity and angular distributions of these clouds, we conclude that they are relics of ongoing interactions between galaxies in the group. In contrast, the non-interacting NGC 2403 galaxy group shows no signs of Hi clouds or faint, extended Hi. We also detect a compact Hi cloud at v = −205 km s−1, which we believe to be part of HVC Complex A. Our observations suggest that the number density of Hi clouds in galaxy groups is strongly correlated with the level and age of ongoing galaxy interactions in the group.
Email your librarian or administrator to recommend adding this to your organisation's collection.