The Extinction Toward the Galactic Bulge from RR Lyrae Stars

Abstract

We 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 $R_{V,VR}=A_V/E(V-R)=4.3\pm 0.2$. This value is what is expected for a standard extinction law with $R_{V,BV}=3.1\pm 0.3$.

arXiv comment4 Figures, accepted to AJ

References in corpus (19)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Correcting for the Effects of Interstellar Extinction
• The NextGen Model Atmosphere grid for $3000\le \Teff \le 10000\K$
• A Geometric Determination of the Distance to the Galactic Center
• Equilibrium Disk-Bulge-Halo Models for the Milky Way and Andromeda Galaxies
• Calibration of the MACHO Photometry Database
• The MACHO Project LMC Variable Star Inventory. IX. Frequency Analysis of the First Overtone RR Lyrae Stars and the Indication for Nonradial Pulsations
• The Optical Gravitational Lensing Experiment. Is Interstellar Extinction Toward the Galactic Center Anomalous?
• Extinction Map of Baade's Window
• Extinction within 10 degrees of the Galactic Centre using 2MASS
• Systematics of RR Lyrae Statistical Parallax III: Apparent Magnitudes and Extinctions
• The Metallicity and Reddening of Stars in the Inner Galactic Bulge
• The Optical Gravitational Lensing Experiment. Deep Photometry of the Sagittarius Dwarf Spheroidal Galaxy
• Clump Distance to the Magellanic Clouds and Anomalous Colors in the Galactic Bulge
• Angular diameters, fluxes and extinction of compact planetary nebulae: further evidence for steeper extinction towards the Bulge
• The Large-Scale Extinction Map of the Galactic Bulge from the MACHO Project Photometry
• Luminosity Function of the Perigalactocentric Region
• The Near-Infrared Photometric Properties of Bright Giants in the Central Regions of the Galactic Bulge
• Period Color and Amplitude Color relations for MACHO project LMC RR Lyraes

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