Period-Luminosity Relation for Classical Cepheids. Estimating the Intrinsic Scatter

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In this Subject: <a title="Astronomy" href="/content/subcat;jsessionid=4fb417nkdbra6.alice?j_subject=226&j_availability=">Astronomy
By this author: <a href="/search;jsessionid=4fb417nkdbra6.alice?option2=author&value2=Berdnikov+LN">Berdnikov L.N. ;&nbsp; Dambis A.K. ;&nbsp; <a href="/search;jsessionid=4fb417nkdbra6.alice?option2=author&value2=Vozyakova+OV">Vozyakova O.V.

Authors: Berdnikov L.N.; Dambis A.K.; Vozyakova O.V.

Source: Astrophysics and Space Science, Volume 252, Numbers 1-2, 1997 , pp. 473-476(4)

Publisher: Springer

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Abstract:

Published photoelectric and CCD photometric data for fundamental-mode Cepheids in the Large Magellanic Cloud are analyzed. The inferred scatter of the observed period-luminosity relation decreases with increasing quality of the light curves used. The observed scatter of the period-luminosity relations in the V and IC bands is as low as 0m.11 and 0m.07, respectively, i.e., a factor of sim 1.5 smaller than the lowest published estimates. This, in particular, suggests that the intrinsic scatter might be lower than previously believed.