PHY1117 Practical Astrophysics

2007-2008

Aims

This module introduces students to computer-aided manipulation and analysis of modern astrophysical data. The students will gain an understanding of the basic properties of digital imaging and spectroscopy data and how such data are limited by various noise components added in the signal chain between the astrophysical source and the detection of photons or waves from it. The students will gain an appreciation of the computer tools and algorithms used to analyse astrophysical data through a series of short projects based on actual data, with the goal of producing meaningful scientific results and understanding the uncertainties associated with them. The module also illustrates the interesting differences of approach needed by 'observational physics' as opposed to 'experimental physics'.

Intended Learning Outcomes

Students should be able to:

Module Specific Skills

• describe the essential components in the chain starting from an astrophysical source and ending with digital data stored in a computer;
• describe the sources of noise associated with this chain and how they combine;
• perform basic manipulations and measurements of digital astrophysical data;
• perform simple analyses of the measurements to derive astrophysical results;
• present the manipulation, analysis, and results in a clear, logical fashion; in written form

Discipline Specific Skills

• identify the properties and limitations of observational data;
• present results of data analysis in an appropriate fashion;
• apply logic to the solution of problems;
• keep contemporaneous notes in a professional notebook;

Personal and Key Skills

• interact with demonstrators in a laboratory environment;
• use the WWW and software tools to enhance learning.

Learning and Teaching Methods

Laboratory classes, short introductory presentations, directed self-study, handouts and e-learning resources.

Assignments

Record of experiments in laboratory notebook/binder.

Assessment

Six experiments based on evidence in laboratory notebook/binder (100%).

Syllabus Plan and Content

Indicative list of projects:

1. Poisson noise
2. Luminosity function of a young stellar cluster
3. Proper motion of fast-moving stars
4. Spectral classification of stars and brown dwarfs
5. Classification of galaxy sizes and morphologies
6. The rotation of the Sun

Core Text

Supplementary Text(s)

Formative Mechanisms

Students are able to monitor their learning by attempting the practical exercises. They are able to discuss these exercises with demonstrators and the course instructor.

Evaluation Mechanisms

The module will be evaluated using information gathered via the student representation mechanisms, the staff peer appraisal scheme, and measures of student attainment based on summative assessment.