Is the generated 24 word seed from a ledger nano s compatible with monero core wallet?
The short answer is Yes, but until Monero wallet hardware support is out of alpha testing and is supported by two or more wallets consistently the answer to this question is a work-in-progress.
For example BIP 39/44 technology can be used to seed the synthesis of 25 Electrum Words, see Example 10 that uses a shortened m/44'/128'/0' path that works with 12, 15, 18, 21 and 24 BIP 39 seed words. An older deprecated alpha Monero Trezor hardware support never attempted to harmonize BIP 39 technology with Electrum words, which mentally itched me enough to write and share https://github.com/skaht/XMR around 18 months ago. I believe the recent Nano S body of work uses a path such as m/44'/128'/0'/0/0.
The list of English words available to create a bitcoin seed is not the same as the list of English words available to create a monero seed.
Monero only considers the first three letters of each seed word (for English, four for other languages) - in this case abandon, for example, would result in aba which is not the beginning of any valid monero seed word. That is not going to work well...
And the number of words in each list is not the same either so you could not even convert the words into indices and back.
If I'm not mistaken monero uses a 25 word seed.
And do you really want to use the same seed on all/multiple wallets?