Here's the sort of question I never thought I'd ever be nerd enough to ask. Yeah I know. There's a Trekker born every minute. But sometimes, these sorts of things need answering.
Brushes off Chee-to dust and pats down smiley face Watchmen t-shirt.
We know from multiple sources (most recently an episode of Star Trek: Enterprise) that the planet Vulcan orbits within the star system 40 Eridani, which is 16 light years from Earth. We also know that the Romulans are descended from the Vulcans, and that they left to found their own colony thousands of years ago. Whether they left via FTL or at relativistic speeds is still not known, but in any case, it's unlikely that they could have travelled very far.
So. In Star Trek we learn that Romulus was destroyed by a nearby supernova explosion. The farthest away you can be from a supernova explosion and suffer any damage is about 30 light years, though I'm sure that's negotiable.
So. Is it physically possible, given a plausible distance from Romulus to Vulcan, for Romulus to have been affected by a supernova-capable star? Which are the nearest to Earth and how likely are any of them to blow in the next few centuries?