Find the entry of this object in the
ALFALFA archive, and use the
images and links there to find the answers to these questions. As always, it is most important
that you understand how to derive quantitative answers and their uncertainties.
- Estimate the distance to this galaxy. Do you get the same answer as the value given
in the ALFALFA database?
- Compute the HI mass of the galaxy. Do you get the same answer as the value given
in the ALFALFA database?
- What lines are seen in the SDSS spectrum? What does the spectrum
imply about this galaxy?
- What characteristics distinguish
galaxies designated as "Markarians"?
- Estimate the total mass of the galaxy. This won't be straightforward;
explain your method and its uncertainties.
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SDSS link
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