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Example #9: Searching for Objects with both HST Imaging and Spectroscopic Data

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GOAL: This tutorial shows you how to use the MAST Discovery Portal to determine which DA White Dwarfs have both HST spectroscopic and imaging data, and get the details of the imaging and spectral observations.

SCIENCE CASE: The science case is determining which objects that have both HSC magnitudes and HST spectra (e.g. DA White Dwarfs). Note that objects with only spectra or only imaging will not appear in this search.

NOTE: For more information on spectroscopic matching (e.g. which spectroscopic observations were matched, how was the matching performed), see the FAQ (link).

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Step 1 - Search the HSC spectroscopic database for DA White Dwarfs

Go to the MAST Discovery Portal. Use the pull down menu under Select a Collection to choose the HSC Spectra (blue) and hit Load All (green).

Step 2 - Select the DA White Dwarfs

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Clicking on the icon (orange) will bring up an interactive Spectral Viewer, in which you can measure line locations, equivalent widths, etc.; see Use Case 8 (link) for more details on using the Spectral Viewer.

Step 3 - Find objects that have imaging data but not an HSC ID

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