ASTR 430 ยท Lecture 02

Lecture 02: Literature Search as an Experiment

Research Methods in Astronomy

The literature is data: query string, timestamp, database, and screening rule are part of the measurement.

Objectives and route

Terms for This Lecture

Search query

Definition: The exact machine-readable expression submitted to a bibliographic database.

Why it matters here: In Literature Search as an Experiment, Search query is needed to reason about ADS query syntax, scope, screening, and inclusion criteria rather than merely label the phenomenon.

Relationship: It is interpreted alongside Inclusion criterion and the lecture relation below; identify which quantities are observed, calibrated, or model-derived.

Limitation or common confusion: This describes the screen, not the quality of the literature.

\(P(keep|paper)=P(title,abstract,methods|rule)\)

Why the method matters

The literature is data: query string, timestamp, database, and screening rule are part of the measurement.

Keep observation, calibration, transformation, model, and claim separate so each can be challenged.

queryscreen
ADS query syntax, scope, screening, and inclusion criteria. The geometry distinguishes inputs, transformations, and inferential limits.

Formal object

\(P(keep|paper)=P(title,abstract,methods|rule)\)

Define fields, units, defaults, version identifiers, and the boundary between measured, adopted, and inferred quantities.

Read the evidence

Identify which part is input, transformation, and claim. A caption should let a reader reproduce the path without asking the author what was omitted.

queryscreen
ADS query syntax, scope, screening, and inclusion criteria. The geometry distinguishes inputs, transformations, and inferential limits.

Worked audit

A frozen screen retaining 6 of 18 records has fraction 6/18 = 0.333333.

This describes the screen, not the quality of the literature.

Estimate direction first, record units or decision criteria, then test one assumption. This check is generated from shared ASTR430 values.

Failure modes

Active reasoning

Prompt: A screening log with 18 records and 6 retained papers makes inclusion decisions auditable.

What would you record so a skeptical collaborator could rerun or challenge the conclusion?

Paired workshop

The workshop turns this method into a reproducible artifact: a query manifest, screening log, uncertainty table, figure critique, time budget, or proposal review. The deliverable includes result and provenance.

Takeaways

Exact source anchors

NASA ADS API Help; SIMBAD User Guide bibliographic queries.

Archive, software, and ethics citations with verification status are in reference-log.md.