Measuring stellar temperatures: an astrophysical laboratory for undergraduate students

Details Measuring stellar temperatures: an astrophysical laboratory for undergraduate students Measuring stellar temperatures: an astrophysical laboratory for undergraduate students

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ejph...29..113c&link_type=abstract

European Journal of Physics, Volume 29, Issue 1, pp. 113-121 (2008).

Physics

1

Scientific paper

While astrophysics is a fascinating subject, it hardly lends itself to laboratory experiences accessible to undergraduate students. In this paper, we describe a feasible astrophysical laboratory experience in which the students are guided to take several stellar spectra, using a telescope, a spectrograph and a CCD camera, and perform a full data analysis using the equivalent widths method on some spectral lines. This allows them to derive stellar temperatures after a suitable calibration and fitting procedure. On average, the estimated star's temperatures agree with the known results within an error margin of 5 10% for cold stars, and 20 25% for hot stars.

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