Are these photos self-portraits?

Strictly speaking, these photos can be taken by selfies or photographers.

Generally speaking, people understand the definition of selfie as "taking pictures of themselves", but some people will understand "others taking pictures of themselves" as selfie, which means that some people think that as long as they take pictures of themselves, they are taking selfies.

If you say the method, the photographer doesn't have to say it, just say the method he took.

Generally speaking, the camera is fixed in advance (for example, with a tripod), and then it goes to its predetermined position in front of the lens, and the camera is controlled by a timer mode or a remote controller to focus on shooting.

But from my point of view, these pictures are all backlit. If you don't need auxiliary light, you shouldn't be able to shoot this effect, so these photos should be carefully arranged by the photographer, unlike the models inside.

If you have any questions about this set of photos, please ask.