lec24 - Lecture 24 Review: Chapters 13-16 Lecture 24 Purdue...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 24 Review: Chapters 13-16 Purdue University, Astronomy 364 1 Lecture 24
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Reminder • HW05 is ready to be picked up. • HW06 will be due during the exam on Wed. • Exam #2 will be on March 23 8-9 pm in Rm 203 (PHYS). Details can be found on the course web page. Lecture 23 Purdue University, Astronomy 364 2
Background image of page 2
Chapter 13 • Apparent magnitude: measures flux. – Is an observable. – Uses the star Vega as a reference. – Usually defined for a wavelength range (e.g., visual band). • Absolute magnitude: measures luminosity. – Is not an observable. – Defined as apparent magnitude at a distance of 10 pc. – Usually defined for a wavelength range. • Distance modulus: the difference in apparent and absolute magnitudes yields distance. Lecture 24 Purdue University, Astronomy 364 3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Reminder • HW05 is ready for pick-up. • HW06 will be due on March 23 (before the exam). • Exam #2 will take place on March 23 8-9 pm in Rm 203 (PHYS). Details can be found on the course web page. Lecture 23 Purdue University, Astronomy 364 4
Background image of page 4
Chapter 13 • Color index: measures the difference in apparent magnitudes in two different wavebands. – for instance,
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/23/2011 for the course ASTR 364 taught by Professor Cui,weik. during the Spring '11 term at Purdue University-West Lafayette.

Page1 / 13

lec24 - Lecture 24 Review: Chapters 13-16 Lecture 24 Purdue...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online