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MULTI-WAVELENGTH STUDY OF THE SUPERNOVA REMNANT KES 79 (G33.6+0.1): ON ITS SUPERNOVA PROPERTIES AND EXPANSION INTO A MOLECULAR ENVIRONMENT
Zhou,Ping1; Chen,Yang1,2; Safi-Harb,Samar3; Zhou,Xin4,5; Sun,Ming6; Zhang,Zhi-Yu7,8; Zhang,Gao-Yuan1
2016-11-08
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume831Issue:2
AbstractABSTRACT Kes?79 (G33.6+0.1) is an aspherical thermal composite supernova remnant (SNR) observed across the electromagnetic spectrum and showing an unusual highly structured morphology, in addition to harboring a central compact object (CCO). Using the CO J?=?1–0, J?=?2–1, and J?=?3–2 data, we provide the first direct evidence and new morphological evidence to support the physical interaction between the SNR and the molecular cloud in the local standard of rest velocity . We revisit the 380 ks XMM-Newton observations and perform a dedicated spatially resolved X-ray spectroscopic study with careful background subtraction. The overall X-ray-emitting gas is characterized by an under-ionized ( ) cool ( keV) plasma with solar abundances, plus an under-ionized ( ) hot ( keV) plasma with elevated Ne, Mg, Si, S, and Ar abundances. The X-ray filaments, spatially correlated with the 24 IR filaments, are suggested to be due to the SNR shock interaction with dense gas, while the halo forms from SNR breaking out into a tenuous medium. Kes?79 appears to have a double-hemisphere morphology viewed along the symmetric axis. Projection effect can explain the multiple-shell structures and the thermal composite morphology. The high-velocity, hot ( keV) ejecta patch with high metal abundances, together with the non-uniform metal distribution across the SNR, indicate an asymmetric SN explosion of Kes?79. We refine the Sedov age to 4.4–6.7 kyr and the mean shock velocity to 730 . Our multi-wavelength study suggests a progenitor mass of ~15–20 solar masses for the core-collapse explosion that formed Kes?79 and its CCO, PSR?J1852+0040.
KeywordISM: individual objects (G33.6+0.1?=?Kes?79) ISM: supernova remnants pulsars: individual (PSR J1852+0040)
DOI10.3847/0004-637X/831/2/192
Language英语
WOS IDIOP:0004-637X-831-2-192
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23749
Collection中国科学院紫金山天文台
Affiliation1.Department of Astronomy, Nanjing University, Nanjing?210023, China, pingzhou@nju.edu.cn
2.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, China
3.Department of Physics and Astronomy, University of Manitoba, Winnipeg?R3T 2N2, Canada
4.Purple Mountain Observatory, CAS, 2 West Beijing Road, Nanjing 210008, China
5.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China
6.Physics Department, University of Alabama in Huntsville, Huntsville, AL 35899, USA
7.Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
8.ESO, Karl Schwarzschild Strasse 2, D-85748 Garching, Munich, Germany
Recommended Citation
GB/T 7714
Zhou,Ping,Chen,Yang,Safi-Harb,Samar,et al. MULTI-WAVELENGTH STUDY OF THE SUPERNOVA REMNANT KES 79 (G33.6+0.1): ON ITS SUPERNOVA PROPERTIES AND EXPANSION INTO A MOLECULAR ENVIRONMENT[J]. The Astrophysical Journal,2016,831(2).
APA Zhou,Ping.,Chen,Yang.,Safi-Harb,Samar.,Zhou,Xin.,Sun,Ming.,...&Zhang,Gao-Yuan.(2016).MULTI-WAVELENGTH STUDY OF THE SUPERNOVA REMNANT KES 79 (G33.6+0.1): ON ITS SUPERNOVA PROPERTIES AND EXPANSION INTO A MOLECULAR ENVIRONMENT.The Astrophysical Journal,831(2).
MLA Zhou,Ping,et al."MULTI-WAVELENGTH STUDY OF THE SUPERNOVA REMNANT KES 79 (G33.6+0.1): ON ITS SUPERNOVA PROPERTIES AND EXPANSION INTO A MOLECULAR ENVIRONMENT".The Astrophysical Journal 831.2(2016).
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