18.53: wiu6thesupernovaof1885

Big Ideas in Cosmology · LibreTexts

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    Theme
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    Data
    Step
    Item
    Value
    1
    Angular Size
    ?? arc sec
    2
    Expansion Rate
    ?? km/s
    3
    Physical Size
    ?? lightyear
    4
    Distance
    ?? lightyear
    Introduction
    Steps:
    1. Use the image to measure the angular size of the remnant.
    2. Use the spectrum to estimate the expansion velocity of the cloud.
    3. Use the age of the remnant and its expansion velocity to determine the physical size of the cloud.
    4. Use the small angle formula to determine a distancr from the angulat size and physical size.
    Measure Angular Size of SN
    Calculation
    Diameter (Pixels)
    ×0.049 arc sec/pixel =
    ?? arc sec
    Measure Expansion Rate of SN
    FWHM: 105.72
    Line 1
    Line 2
    Line 1
    ×c =
    ?? km/s
    Line 2
    - 35
    ×c =
    ?? km/s
    Average Velocity
    ?? km/s
    Calculate Physical Size of SN
    Age of Supernova
    Years: 1998 - 1885 =years
    Seconds:
    60 s
    min
    ×
    60 min
    hr
    ×
    24 hr
    day
    ×
    365 day
    year
    ×
    years =
    0. seconds
    Size of Supernova
    Km :
    0. seconds × ?? km/s
    ?? km
    Ly :
    ?? km * 1.05e-13 ly/km=
    ?? ly
    Distance to SN
    Convert Angular Size to Radians
    0
      arcsec ×4.85e-6 rad/arcsec =
    ?? rads
    Calculate Distance
    ?? ly
    rads
    =
    ?? ly
    Previous
    Next

    This page titled 18.53: wiu6thesupernovaof1885 was last modified on Mon, 20 Feb 2023 07:27:13 GMT and is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Kim Coble, Kevin McLin, and Lynn Cominsky.