Journal
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
Volume 123, Issue 909, Pages 1262-1264Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/662692
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Funding
- National Science Foundation [PHY-0849416, AST-1109247]
- NASA
- Sigma Xi
- Lehigh University
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1109247] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [849416] Funding Source: National Science Foundation
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The recently discovered.-ray binary 1FGL J1018.6-5856 has a proposed optical/NIR counterpart 2MASS 10185560-5856459. We present Stromgren photometry of this star to investigate its photometric variability and measure the reddening and distance to the system. We find that the.-ray binary has E(B - V) = 1.34 +/- 0.04 and d = 5.4(2.1)(+4.6) kpc. While E(B - V) is consistent with X-ray observations of the neutral hydrogen column density, the distance is somewhat closer than some previous authors have suggested.
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