Spectroscopy in HOU-- A new textbook on
spectroscopy in astronomy using HOU software
Toshihiro Handa (University of Tokyo)Reiko Furusho, Tatsuyuki Arai, Ikuko Harada, Yoshihiro Kakeya, T
etsuya Kawabata, Tomoya Nagai, Osamu Ohshima (JAHOU spectrum curriculum working group)
Spectroscopy in Astronomy
• One of the basic concepts in astrophysics. However… Spectroscopy is not familiar to most people.
Spectroscopic data can be seen as a image.
• Make an image from spectroscopic data!– Just the same as astronomers’ work!
• We have a tool to treat an image data!• Let’s use the HOU-IP!!
JAHOU textbook; contents outline
• Show minimal concepts to understand spectroscopy in astronomy.
• 4 chapters; what can we know about stars through spectroscopy?
• 12 sections; usable even for a short term course (often in Japan).
• Extendable to whole electromagnetic waves. Some sections are used radio astronomy data.
JAHOU textbook; tools
• PC program; HOU-IP– Measure spectra of actual astronomical data
• Plot graph (on paper sheet/use PC)– Find a relation
• Small experiments; confirm by themselves– Listen sounds with Doppler effect– Watch actual spectra
Experiments are required if the results are beyond their expects
JAHOU textbook; format
• 3 parts; like the HOU textbook– Main textbook
– Answer sheets
– Teachers note
• With a table showing relation of concepts– Usage for short term class
– As a component of a science course in school Tightly scheduled course at schools in Japan
JAHOU textbook; contents page
• example
Chapters in our textbook
• 4 chapters : target concepts– basic
color, spectrum, light wave, Doppler effect
– chemical composition– physical state; temperature & density– velocity & kinematics
Sections in Chapter 1
• 12 sections : usage for short course • Chapter 1: basic concepts
– Color and spectra Based upon our CD-ROM books “
space spectrum museum” by Awano et al.
– Spectra for various lights– Light as a wave– Doppler effect
Chapter 1
• example
Sections in Chapter 2
• Chapter 2: composition– Spectra of stars (continuum)– Spectra of nebulae (emission lines)
Chapter 2
• example
Sections in Chapter 3
• Chapter 3: physical state – temperature– Spectra of stars
Chapter 3
• example
Sections in Chapter 4
• Chapter 4: velocity and kinematics– Spin of Sun– Rotation of a galaxy– Hubble law– Supernova remnant as an expanding shell
Chapter 4
• example
Future works
• Feedback from trial report– Trial use in progress
• Add small assistant programs– Doppler simulator– Blackbody radiation viewer– Excitation simulator– etc.
• Translation into other languages– Only in Japanese
• Extend to include other topics– Only minimal topics
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