Author:
Hollyanna White
Subject:
Astronomy
Material Type:
Activity/Lab
Level:
Community College / Lower Division, College / Upper Division
Tags:
  • Activity
  • Astronomy
  • Cepheid
  • Constant
  • Doppler
  • Effect
  • Hubble
  • Lab
  • Luminosity
  • Magnitude
  • Pulsation
  • Science
    License:
    Creative Commons Attribution
    Language:
    English
    Media Formats:
    Text/HTML, Video

    ASTR 1020 - Lab 8: Cepheids - Part A

    ASTR 1020 - Lab 8: Cepheids - Part A

    Overview

    This laboratory consists of two parts. In part A, we will follow Hubble’s method of measuring distances. Using pulsation time periods, we will obtain the absolute magnitude of a Cepheid variable and convert this absolute magnitude into luminosity which will, in turn, give us the distance. In Part B, we will use spectral shift (the Doppler effect) to determine the Hubble Constant. 

     

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    Distant Nature: Astronomy Exercises 2016 by Stephen Tuttle under license "Creative Commons Attribution Non-Commercial Share Alike".

    ASTR 1020 - Lab 8: Cepheids - Part A

    Download the attached zip file and install the website on a server or in your LMS course section. To place HTML website content in Brightspace:

    1. Create an appropriate folder structure in Manage Files. This location is where files will be uploaded and unzipped. Each resource (website) should have a descriptively named independent folder.
    2. Navigate to the appropriate folder and Upload the zip file.
    3. Unzip the folder by clicking the pull-down arrow, and clicking Unzip on the submenu. A content folder will appear. It contains two folders and two HTML files.
    4. Associate the index.html file to your Course Content topic. Perform this task in the Course Content area by clicking New and then clicking Add from Manage Files on the submenu. Next, navigate to the index.html file and Add the file.
    5. Click the pull-down arrow by the new web page topic (currently named index). Next, click Edit Properties In-place on the submenu and rename the link to be descriptive.
    6. Delete the extraneous zip file from the Manage Files folder.