Students

ASTR3110 – Data Science Techniques in Astrophysics

2025 – Session 1, In person-scheduled-weekday, North Ryde

General Information

Download as PDF
Unit convenor and teaching staff Unit convenor and teaching staff Convenor, Lecturer, Lab Demonstrator
Andrew Hopkins
12 Wally's Walk, Room 530
By appointment
Lecturer, Lab Demonstrator
Gabriella Quattropani
12 Wally's Walk, Room 507
By appointment
Gabriella Quattropani
Credit points Credit points
10
Prerequisites Prerequisites
PHYS2020
Corequisites Corequisites
Co-badged status Co-badged status
Unit description Unit description

We are in a ‘golden age’ of astronomy: powerful new telescopes are providing thrilling new views of the Universe. The space-based Gaia telescope, for instance, has mapped the three-dimensional positions of over a billion stars, giving us an unprecedented look at the Milky Way's structure. However, handling the vast influx of data from these instruments has been likened to 'drinking from a firehose'—impossible without assistance. Scientists now rely on intelligent algorithms and strong statistical analysis to uncover insights in astronomical 'big data'. In this unit, students will explore Milky Way astrophysics, where new data and advanced analysis techniques are making a major impact. Through labs, students will refine their data analysis skills using machine learning, Bayesian statistics, and data-mining to investigate cutting-edge astronomy data tied to lecture topics. The skills learned here are widely applicable beyond astronomy, equipping students to lead in the information age.

Learning in this unit enhances student understanding of global challenges identified by the United Nations Sustainable Development Goals (UNSDGs) Industry, Innovation and Infrastructure

Important Academic Dates

Information about important academic dates including deadlines for withdrawing from units are available at https://www.mq.edu.au/study/calendar-of-dates

Learning Outcomes

On successful completion of this unit, you will be able to:

  • ULO1: demonstrate knowledge of the detailed structure and formation history of the Milky Way galaxy.
  • ULO2: compare theoretical models to real data and quantify significance and likelihood.
  • ULO3: design and write python code to apply statistical techniques to analysing and interpreting astronomical data sets.
  • ULO4: visualise data, identify biases and describe key properties. 
  • ULO5: apply machine learning techniques to identify structure and patterns in data, and interpret their significance. 

General Assessment Information

Unit workload

The 'estimated time on task' for each assessment item is an estimate of the additional time needed to complete each assessment outside of all scheduled learning activities. These estimates assume that you actively engage with all scheduled learning activities and spend an additional 12 hours of self-led study over the course of the session.

Requirements to Pass this Unit

To pass this unit you must achieve a total mark equal to or greater than 50%, and obtain a mark of at least 40% in the final exam, which is a hurdle assessment. If your mark in the final examination is between 30% and 39% inclusive, you may be a given a second and final chance to attain the required level of performance; the mark awarded for the second exam towards your final unit mark will be capped at 40%, and you will be allowed to sit the second exam only if this mark would be sufficient to pass the unit overall. The final exam is set as a hurdle task in order to ensure that Unit Learning Outcomes 1 and 2 are fulfilled by the student.

Supplementary examinations

If you receive special consideration for the final exam, a supplementary exam will be scheduled after the end of the normal exam period, typically about 3 to 4 weeks after the normal exam period. By making a special consideration application for the final exam you are declaring yourself available for a resit during the supplementary examination period and will not be eligible for a second special consideration approval based on pre-existing commitments. Please ensure you are familiar with the policy prior to submitting an application. Approved applicants will receive an individual notification prior to the exam with the exact date and time of their supplementary examination.

If you are given a second opportunity to sit the final examination as a result of failing to meet the minimum mark required by the hurdle, you will be offered that chance during the same supplementary examination period and will be notified of the exact day and time after the publication of final results for the unit.

Late Assessment Policy

Unless a Special Consideration request has been submitted and approved, a 5% penalty (of the total possible mark of the task) will be applied for each day a written report or presentation assessment is not submitted, up until the 7th day (including weekends). After the 7th day, a grade of ‘0’ will be awarded even if the assessment is submitted. The submission time for all uploaded assessments is 11:55 pm. A 1-hour grace period will be provided to students who experience a technical concern.

For any late submission of time-sensitive tasks, such as scheduled tests/exams, performance assessments/presentations, and/or scheduled practical assessments/labs, please apply for Special Consideration.

Assessments where Late Submissions will be accepted

  • Lab Reports - YES, Standard Late Penalty applies

  • Problem Sets - YES, Standard Late Penalty applies

Special Consideration

The Special Consideration Policy aims to support students who have been impacted by short-term circumstances or events that are serious, unavoidable and significantly disruptive, and which may affect their performance in assessment. If you experience circumstances or events that affect your ability to complete the assessments in this unit on time, please inform the convenor and submit a Special Consideration request through Service Connect.

Assessment Tasks

Name Weighting Hurdle Due
Problem sets 20% No Weeks 3, 8, and 12
Lab reports 50% No Weeks 6, 10, and 13
Final exam 30% Yes Final exam period

Problem sets

Assessment Type 1: Problem set
Indicative Time on Task 2: 20 hours
Due: Weeks 3, 8, and 12
Weighting: 20%

 

A series of assignments throughout the semester.

 


On successful completion you will be able to:
  • demonstrate knowledge of the detailed structure and formation history of the Milky Way galaxy.
  • compare theoretical models to real data and quantify significance and likelihood.

Lab reports

Assessment Type 1: Lab report
Indicative Time on Task 2: 20 hours
Due: Weeks 6, 10, and 13
Weighting: 50%

 

A report for each of the three computational projects.

 


On successful completion you will be able to:
  • design and write python code to apply statistical techniques to analysing and interpreting astronomical data sets.
  • visualise data, identify biases and describe key properties. 
  • apply machine learning techniques to identify structure and patterns in data, and interpret their significance. 

Final exam

Assessment Type 1: Examination
Indicative Time on Task 2: 20 hours
Due: Final exam period
Weighting: 30%
This is a hurdle assessment task (see assessment policy for more information on hurdle assessment tasks)

 

Examination in the university exam period, covering all content from the unit.

 


On successful completion you will be able to:
  • demonstrate knowledge of the detailed structure and formation history of the Milky Way galaxy.
  • compare theoretical models to real data and quantify significance and likelihood.

1 If you need help with your assignment, please contact:

  • the academic teaching staff in your unit for guidance in understanding or completing this type of assessment
  • the Writing Centre for academic skills support.

2 Indicative time-on-task is an estimate of the time required for completion of the assessment task and is subject to individual variation

Delivery and Resources

Your lecturers in this course are Andrew Hopkins and Gabriella Quattropani. Each week, there will be 2 hours of lectures that will be delivered on-campus. There will also be a one hour of lectorial-type demonstration delivered on-campus. The 2 hours of lectures will cover astronomy content related to the Milky Way galaxy, while the one hour lectorials will cover techniques used to extract information from datasets (Gabriella Quattropani). Both will begin in Week 1 of the session, and in-person attendance is essential for success in this unit.

The lab sessions run from Week 3-12 on-campus in the Physics and Astronomy computer lab, and will involve a series of computer labs completed using Python Notebooks within the Google Colab environment. Note that labs start in Week 3. Andrew Hopkins and Gabriella Quattropani will be your lab demonstrators. Again, in-person attendance is essential for success the labs.

Resources will be provided on iLearn. There is no required text, although the Milky Way Galaxy component will primarily draw content from the book "Galaxies in the Universe: An Introduction" 2nd Ed. by Sparke and Gallagher, supplemented by material from "An Introduction to Modern Astrophysics" 2nd Ed. by Carroll and Ostlie and "Galactic Astronomy" by Binney and Merrifield. Useful resources for the data science part of the course are the books "Statistics, Data Mining, and Machine Learning in Astronomy: A Practical Python Guide for the Analysis of Survey Data" by Ivezic et al. and "Hands-On Machine Learning with Scikit-Learn, Keras, and Tensorflow" by Geron.

Methods of Communication

Communication will be via your university email or through announcements on iLearn. General queries regarding assessments and lecture or lab content should be placed on the iLearn discussion board. Queries of a more personal nature can be sent to the convenor (andrew.hopkins@mq.edu.au) from your university email address.

 

Unit Schedule

Week

Lecture material (Gabriella/Andrew)

Lectorial material (Gabriella)

Computer Labs (Gabriella/Andrew)

1 Introduction, basic astronomy (Gabriella) Getting started with Google Colab N/A
2 Distance measurements & introduction to GAIA (Gabriella) Manipulating, visualising and cleaning data (Pandas) N/A
3 Demographics of stars and stellar populations (Gabriella) Fitting a model to data Lab 1: Line Fitting and the Period-Luminosity relation
4 Structure and components of the Milky Way part I (Gabriella) Modelling data: Bayesian reasoning and samplers (MCMC) Lab 1: Line Fitting and the Period-Luminosity relation
5 Structure and components of the Milky Way part II (Gabriella) Exploring structure in data: visualisation, PCA Lab 1: Line Fitting and the Period-Luminosity relation
6 Kinematics of the Milky Way (Gabriella) Exploring structure in data with K-means clustering Lab 2: Determining star cluster membership using Gaia data
7 Orbital Dynamics within the Milky Way part I (Gabriella) Exploring structure in data with Gaussian Mixture Models Lab 2: Determining star cluster membership using Gaia data
8 Orbital Dynamics within the Milky Way part II (Gabriella) Classification: decision trees and random forest Lab 2: Determining star cluster membership using Gaia data
9 The Milky Way's environment: the Local Group part I (Andrew) Artificial neural networks Lab 3: Deep Learning to classify Galactic objects
10 The Milky Way's environment: the Local Group part II (Andrew) Convolutional neural networks Lab 3: Deep Learning to classify Galactic objects
11 Formation of the Milky Way and Local Group (Andrew) Revision Lab 3: Deep Learning to classify Galactic objects
12 Future evolution of the Milky Way and Local Group (Andrew) Revision Revision/Study time
13 Revision (Gabriella/Andrew) Revision  N/A

N.B. This schedule is flexible and subject to change.

Policies and Procedures

Macquarie University policies and procedures are accessible from Policy Central (https://policies.mq.edu.au). Students should be aware of the following policies in particular with regard to Learning and Teaching:

Students seeking more policy resources can visit Student Policies (https://students.mq.edu.au/support/study/policies). It is your one-stop-shop for the key policies you need to know about throughout your undergraduate student journey.

To find other policies relating to Teaching and Learning, visit Policy Central (https://policies.mq.edu.au) and use the search tool.

Student Code of Conduct

Macquarie University students have a responsibility to be familiar with the Student Code of Conduct: https://students.mq.edu.au/admin/other-resources/student-conduct

Results

Results published on platform other than eStudent, (eg. iLearn, Coursera etc.) or released directly by your Unit Convenor, are not confirmed as they are subject to final approval by the University. Once approved, final results will be sent to your student email address and will be made available in eStudent. For more information visit connect.mq.edu.au or if you are a Global MBA student contact globalmba.support@mq.edu.au

Academic Integrity

At Macquarie, we believe academic integrity – honesty, respect, trust, responsibility, fairness and courage – is at the core of learning, teaching and research. We recognise that meeting the expectations required to complete your assessments can be challenging. So, we offer you a range of resources and services to help you reach your potential, including free online writing and maths support, academic skills development and wellbeing consultations.

Student Support

Macquarie University provides a range of support services for students. For details, visit http://students.mq.edu.au/support/

Academic Success

Academic Success provides resources to develop your English language proficiency, academic writing, and communication skills.

The Library provides online and face to face support to help you find and use relevant information resources. 

Student Services and Support

Macquarie University offers a range of Student Support Services including:

Student Enquiries

Got a question? Ask us via the Service Connect Portal, or contact Service Connect.

IT Help

For help with University computer systems and technology, visit http://www.mq.edu.au/about_us/offices_and_units/information_technology/help/

When using the University's IT, you must adhere to the Acceptable Use of IT Resources Policy. The policy applies to all who connect to the MQ network including students.


Unit information based on version 2025.03 of the Handbook