A Ph.D. student at institute A recently graduated and left the field. They had been working on a project in the last ~2 years of their programme, as part of a wider research group, but did not publish it. It did, however, constitute a significant chapter in their thesis, and represents a lot of work.
This student's supervisor, Professor X, picked up the project after the student left. They have done a lot of work over the past 4 months to bring it up to publication standard, and as a result have decided to change the first authorship to themselves, and plan to submit soon. In this field, first authorship is desirable.
I (a former student of Professor X at this institute, now working as a postdoc at another institution, and a member of the research group) am a bit uncomfortable about this, for the following reasons:
- Whilst the Professor has clearly done a lot of work, it's arguable whether this constitutes the majority of the contribution. The student did much of the less visible but often difficult work, such as data compilation, exploratory analysis, and literature review. They also produced the first draft of the paper. This contributed as much to the current content of the paper as the subsequent analysis by the professor.
- The paper is an important and exciting contribution, but it is not a key paper from the research group. Professor X does not need another first author paper. Arguably, it would reflect better on Professor X, and the research group as a whole, if the work was (correctly in my opinion) attributed to the former student.
- Part of what makes me quite frustrated about the situation is that if Professor X had expended the same level of effort on the project whilst the student was still at the institution it may have been published in a more timely manner. Much of the additional analysis done since the student left was suggested by said student, but they did not receive the support they needed to achieve it at the time.
I do not believe that making the student first author would violate academic integrity due to the significant contribution they made to the research. The corresponding author would, however, be Professor X.
I'm not sure how to handle this. At one extreme I may remove myself from the paper in solidarity with the student. Alternatively, I could just let it go, and not jeopardise my relationship with the professor and the wider research group.
Another way of posing this question: at what point would it be appropriate for the professor to claim first authorship, and has that threshold been met in this case?
Edit: To be clear, as pointed out by @Ben, none of the reasons listed above are themselves any justification for changing authorship order. But in the marginal case where either author could reasonably be considered 'first-author', I think they provide important context.