The Nuclear Bulge extinction
Andrew J. Gosling (1), Katherine M. Blundell (1), Reba M., Bandyopadhyay (2), Phil Lucas (3) ((1) University of Oxford, (2) University, of Florida, (3) University of Hertfordshire)
TL;DR
This paper provides a high-resolution near-infrared extinction map of the Nuclear Bulge, revealing significant variability in the extinction law that affects accurate measurements across different wavelengths.
Contribution
It introduces a detailed extinction map and demonstrates the importance of accounting for extinction law variability for precise extinction measurements.
Findings
Extinction law parameter varies significantly across the Nuclear Bulge.
Accounting for extinction law variability improves consistency of extinction measurements.
High-resolution extinction mapping reveals detailed structure in the Nuclear Bulge.
Abstract
We present a new, high resolution (5" per pixel) near-infrared extinction map of the Nuclear Bulge using data from the UKIDSS-GPS. Using photometry from the J, H and K-bands we show that the extinction law parameter is also highly variable in this region on similar scales to the absolute extinction. We show that only when this extinction law variation is taken into account can the extinction be measured consistently at different wavelengths.
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