期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 452, 期 4, 页码 3470-3474出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv1534
关键词
ISM: supernova remnants; X-rays: individual: G332.5-5.6; X-rays: ISM
资金
- NSFC [211381001, Y211582001]
- China's Ministry of Science and Technology under the State Key Development Programme for Basic Research [2012CB821800, 2013CB837901]
We analyse the Suzaku X-ray Imaging Spectrometer data of the central region of supernova remnant G332.5-5.6. The X-ray data are well described by a single non-equilibrium ionization thermal model, vnei, with an absorbing hydrogen column density of 1.4(-0.1)(+0.4) x 10(21) cm(-2). The plasma is characterized by an electron temperature of 0.49(-0.06)(+0.08) keV with subsolar abundances for O (0.58(-0.05)(+0.06) solar value) and Fe (0.72(-0.05)(+0.06) solar value) and slightly overabundance for Mg (1.23(-0.14)(+0.14) solar value). It seems that the central X-ray emission originates from a projection effect or evaporation of residual clouds inside G332.5-5.6. We estimate a distance of 3.0 +/- 0.8 kpc for G332.5-5.6 based on the extinction-distance relation. G332.5-5.6 has an age of 7-9 kyr.
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