Andrea Kunder et al. 2008 The Astronomical Journal 135 631 doi:10.1088/0004-6256/135/2/631
Andrea Kunder1, Piotr Popowski2, Kem H. Cook3 and Brian Chaboyer1
Show affiliationsWe present mean reddenings toward 3525 RR0 Lyrae stars from the Galactic bulge fields of the MACHO Survey. These reddenings are determined using the color at minimum V-band light of the RR0 Lyrae stars themselves and are found to be in general agreement with extinction estimates at the same location obtained from other methods. Using 3256 stars located in the Galactic Bulge, we derive the selective extinction coefficient RV,VR = AV/E(V − R) = 4.3 ± 0.2. This value is what is expected for a standard extinction law with RV,BV = 3.1 ± 0.3.
dust, extinction; Galaxy: center; stars: statistics; surveys
Issue 2 (2008 February)
Received 2006 July 13, accepted for publication 2007 November 15
Published 2008 January 16
Andrea Kunder et al. 2008 The Astronomical Journal 135 631
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