The Extinction Toward the Galactic Bulge from RR Lyrae Stars

Journal Article · Wed Nov 07 00:00:00 EST 2007 · The Astronomical Journal, vol. 135, no. 2, February 1, 2008, pp. 631-636

OSTI ID:941383

Kunder, A; Popowski, P; Cook, K; Chaboyer, B

The authors 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, they derive the selective extinction coefficient R{sub V,VR} = A{sub V}/E(V-R) = 4.2 {+-} 0.2. this value is what is expected for a standard extinction law with R{sub V,BV} = 3.1 {+-} 0.3

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 941383
• Report Number(s): UCRL-JRNL-236566; TRN: US200824%%473
• Journal Information: The Astronomical Journal, vol. 135, no. 2, February 1, 2008, pp. 631-636, Vol. 135, Issue 2
• Country of Publication: United States
• Language: English

Related Subjects

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