2022 Advanced Earth and Space Sciences C

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Academic unit or major
Graduate major in Earth and Planetary Sciences
Sato Bunei 
Class Format
Lecture    (HyFlex)
Media-enhanced courses
Day/Period(Room No.)
Mon3-4(理学院 地球惑星科学系, 石川台2号館, 307室)  Thr3-4(理学院 地球惑星科学系, 石川台2号館, 307室)  
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Academic year
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Syllabus updated
Lecture notes updated
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Course description and aims

We know properties of celestial objects mainly through observations of their radiation. Especially their spectra obtained via spectroscopy covey to us rich information on their physical and chemical properties. This course will provide an overview of stellar and planetary spectra, and basics on spectroscopic observations. Topics include radiative processes, stellar atmospheres, chemical analysis, stellar motion, internal structure of stars, stellar pulsation, instruments for observations, and observations of extrasolar planets. Basics on radiative process and stellar spectra are introduced, together with how to know physical and chemical properties of stars from stellar spectra. Finally observations of extrasolar planets are introduced as advanced topics.

Student learning outcomes

By the end of this course, students will be able to:
1) Understand basics of radiative processes, formation of stellar spectra, and spectroscopic observations.
2) Apply these knowledge to obtain physical and chemical properties of stars and planets.


stellar spectrum, radiative process, stellar atmosphere, spectroscopy, extrasolar planet

Competencies that will be developed

Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

Class flow

At the beginning of the class, a summary of the previous lecture is given. Then the main points of the day's lecuture are given, and students are asked to provide solutions to some of the questiones as necessary.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Introduction: stellar and planetary spectra Understand general properties of stellar and planetary spectra.
Class 2 Radiation and spectra: radiative transfer Understand basics of radiative transfer.
Class 3 Radiation and spectra: continuous absorption and line absorption Understand origins of continuous and line absorption in stellar photosphere,
Class 4 Radiation and spectra: model photosphere Understand basics of model photosphere.
Class 5 Radiation and spectra: stellar continua Understand measurement and behavior of stellar continua.
Class 6 Radiation and spectra: emission and absorption line Understand measurement and behavior of spectral lines.
Class 7 Radiation and spectra: emission and absorption line Understand measurement and behavior of spectral lines.
Class 8 Stars: chemical abundance Understand basics of chemical analysis of stellar atmospheres.
Class 9 Stars: velocity fields in stellar photosphere Understand stellar rotation, convection, spots and their effects to spectral lines.
Class 10 Observations: spectrograph Understand basics of spectrograph.
Class 11 Observations: radial velocity measurements Understand basics of radial velocity measurements
Class 12 Observations: time series analysis Understand basics of time series analysis
Class 13 Extrasolar planets: radial-velocity method Understand basics of radial-velocity method to detect and characterize exoplanets
Class 14 Extrasolar planets: transit method Understand basics of transit method to detect and characterize exoplanets

Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.



Reference books, course materials, etc.

Reference books and course materials are introduced during the course.

Assessment criteria and methods

Student's knowledge of basics of stellar spectra and spectroscopic observations, and the application will be assessed by reports posed a few times (100%).

Related courses

  • EPS.A410 : Earth and Space Sciences A
  • EPS.A411 : Earth and Space Sciences B

Prerequisites (i.e., required knowledge, skills, courses, etc.)


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