| Titels | Prof. dr. |
| Initials | I.A.G. |
| Main position | Hoogleraar UL |
| Disciplines | Astronomy, astrophysics |
| Chair | Observationele astrofysica |
| Domain | Natural Sciences and Engineering |
| Membership | Member |
| Member of Natural Sciences and Engineering | |
| Employed by |
Universiteit Leiden
Postbus 9513 2300 RA Leiden tel. 071 527 5853 snellen@strw.leidenuniv.nl |
| Personal website | |
| Research/publications |
