ASTR 430 Problem Set 05 Solutions: Figure Critique and Archive Choice

Instructor solution key

Rubric

Require traceable input, correct method, explicit assumptions, quantitative evidence, precise citations, and a limitation. Problems are worth 25, 30, 20, and 25 points.

Problem 1

Expected reasoning: identify the record, preserve provenance, apply the method, test sensitivity, and interpret what the result does not establish.

Key check: A log-log slope is d log y/d log x, not a new measurement.

Problem 2

Expected reasoning: identify the record, preserve provenance, apply the method, test sensitivity, and interpret what the result does not establish.

Key check: A complete answer includes an audit trail, not only a polished number or figure.

Problem 3

Expected reasoning: identify the record, preserve provenance, apply the method, test sensitivity, and interpret what the result does not establish.

Key check: A complete answer includes an audit trail, not only a polished number or figure.

Problem 4

Expected reasoning: identify the record, preserve provenance, apply the method, test sensitivity, and interpret what the result does not establish.

Key check: A complete answer includes an audit trail, not only a polished number or figure.