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The Distance Measurements of Supernova Remnants in The Fourth Galactic Quadrant

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arxiv 1901.02882 v1 pith:7ZEW2B26 submitted 2019-01-09 astro-ph.GA astro-ph.IM

The Distance Measurements of Supernova Remnants in The Fourth Galactic Quadrant

Su-Su Shan , Hui Zhu , Wen-Wu Tian , Hai-Yan Zhang , Ai-Yuan Yang , Meng-Fei Zhang This is my paper
classification astro-ph.GA astro-ph.IM
keywords distancesnrsextinctionfourthg284g309galacticquadrant
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We take advantage of the red clump stars to build the relation of the optical extinction (AV) and distance in each direction of supernova remnants (SNRs) with known extinction in the fourth Galactic quadrant. The distances of 9 SNRs are well determined by this method. Their uncertainties range from 10% to 30%, which is significantly improved for 8 SNRs, G279.0+1.1, G284.3-1.8, G296.1-0.5, G299.2-2.9, G308.4-1.4, G309.2-0.6, G309.8- 2.6, G332.4-0.4. In addition, SNR G284.3-1.8 with the new distance of 5.5 kpc is not likely associated with the PSR J1016-5857 at 3 kpc.

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