Gaia parallax of the associated optical star
The argument
Because Gaia parallax places the optical star IRAS 17287-3443 at about 2.5 kiloparsecs, and given that this star is physically associated with the supernova remnant, the remnant shares the star's distance of about 2.5 kiloparsecs. The association is argued from the star's close projected position to the central compact object and from the similarity of the interstellar absorption measured toward the two objects.
Does it work?
Not yet evaluated.
Premises
- UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitution →Gaia parallax places the optical star IRAS 17287-3443 at a distance of about 2.5 kiloparsecs
- InconclusiveThe evidence and argument have been examined and do not come down on either side.constitution →The optical star IRAS 17287-3443 is physically associated with the supernova remnant HESS J1731-347
Where it is made
Passages where sources make, criticize or mention this argument. They record where it appears, not how strong it is, and none has precedence over another.
No source is recorded as making it.
Earlier ratings
- Jul 21, 2026
The inference is valid: if the star is at 2.5 kiloparsecs and travels with the remnant, the remnant is at 2.5 kiloparsecs. The parallax premise, that Gaia places IRAS 17287-3443 at about 2.5 kiloparsecs, is a direct astrometric measurement and is not seriously disputed. The argument therefore lives or dies on the physical association of the star with the remnant, which rests on projected proximity and matching absorption rather than a demonstrated common origin, and remains the open question.