While astrophysics is a fascinating subject, it hardly lends itself to laboratory experiences accessible to undergraduate students. In this paper we describe is presented a feasible astrophysical laboratory experience, in which 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 stars temperatures agree with known results within an error margin of 5 to 10% for cold stars, and 20 to 25% for hot stars.

Measuring stellar temperatures : an astrophysical laboratory for undergraduate students / D. Cenadelli, M. Zeni. - In: EUROPEAN JOURNAL OF PHYSICS. - ISSN 0143-0807. - 29:1(2008 Jan), pp. 113-121.

Measuring stellar temperatures : an astrophysical laboratory for undergraduate students

D. Cenadelli;
2008-01

Abstract

While astrophysics is a fascinating subject, it hardly lends itself to laboratory experiences accessible to undergraduate students. In this paper we describe is presented a feasible astrophysical laboratory experience, in which 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 stars temperatures agree with known results within an error margin of 5 to 10% for cold stars, and 20 to 25% for hot stars.
EUROPEAN JOURNAL OF PHYSICS
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/36967
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