Molecular environments of the supernova remnant G359.1−0.5

Eppens, L K; Reynoso, E. M.; Lazendic-Galloway, Jasmina; Combi, J. A.; Colombo, J. F. Albacete

doi:10.1093/mnras/staa489

Cited by 3 publications

(2 citation statements)

References 43 publications

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“…Moreover, the distances to some SNRs are still controversial, such as SNR G359.1-0.5. As summarized in Suzuki et al (2020) and Eppens et al (2020), there are suggestions that the SNR located at the Galactic Center, 8.5 kpc, or the foreground of the Galactic center, ∼4 kpc. In addition, even the kinematic distances in the literature are inconsistent with each other.…”

Section: Comparison With Previous Workmentioning

confidence: 99%

Distances to the supernova remnants in the inner disk

Wang

Zhang

Jiang

et al. 2020

A&A

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Context. Distance measurements of supernova remnants (SNRs) are essential as accurate estimates of physical size, dust masses, and some other properties of SNRs depend critically on accurate distance measurements. However, the determination of SNR distances is still a tough task. Aims. Red clump stars (RCs) have a long history of being used as standard candles. In this work, we take RCs as tracers to determine the distances to a large group of SNRs in the inner disk. Methods. We first selected RC stars based on the near-infrared (IR) color-magnitude diagram. Then the distance to and extinction of RC stars were calculated. To extend the measurable range of distance, we combined near-IR photometric data from the 2MASS survey with the deeper UKIDSS and VVV surveys. With the help of the Gaia parallaxes, we also removed contaminants, including dwarfs and giants. Because an SN explosion compresses the surrounding interstellar medium, the SNR region would become denser and exhibit higher extinction than the surroundings. The distance of an SNR is then recognized by the position where the extinction and its gradient is higher than that of the ambient medium. Results. A total of 63 SNRs distances in the Galactic inner disk were determined and divided into three Levels A, B, and C with decreasing reliability. The distances to 43 SNRs are well determined with reliability A or B. The diameters and dust masses of SNRs were estimated with the obtained distance and extinction.

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Section: Comparison With Previous Workmentioning

confidence: 99%

Distances to the supernova remnants in the inner disk

Wang

Zhang

Jiang

et al. 2020

A&A

View full text Add to dashboard Cite

show abstract

“…Moreover, the distances to some SNRs are still controversial, such as SNR G359.1-0.5. As summarized in Suzuki et al (2020) and Eppens et al (2020), there are suggestions that the SNR located at the Galactic Centre, 8.5 kpc, or the foreground of the Galactic center, ∼ 4 kpc. In addition, even the kinematic distances in the literature are inconsistent with each other.…”

Section: Comparison With Previous Workmentioning

confidence: 99%

Distances to the Supernova Remnants in the Inner Disk

Wang,

Zhang,

Jiang

et al. 2020

Preprint

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Context. Distance measurements of supernova remnants (SNRs) are essential and important. Accurate estimates of physical size, dust masses, and some other properties of SNRs depend critically on accurate distance measurements. However, the determination of SNR distances is still a tough task. Aims. Red clump stars (RCs) have a long history been used as standard candles. In this work, we take RCs as tracers to determine the distances to a large group of SNRs in the inner disk. Methods. We first select RC stars based on the near-infrared (IR) color-magnitude diagram (CMD). Then, the distance to and extinction of RC stars are calculated. To extend the measurable range of distance, we combine near-IR photometric data from the 2MASS survey with the deeper UKIDSS and VVV surveys. With the help of the Gaia parallaxes, we also remove contaminants including dwarfs and giants. Because an SN explosion compresses the surrounding interstellar medium, the SNR region would become denser and exhibit higher extinction than the surroundings. The distance of a SNR is then recognized by the position where the extinction and its gradient is higher than that of the ambient medium. Results. A total of 63 SNRs' distances in the Galactic inner disk are determined and divided into three Levels A, B, and C with decreasing reliability. The distances to 43 SNRs are well determined with reliability A or B. The diameters and dust masses of SNRs are estimated with the obtained distance and extinction.

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Spatially resolved X-ray study of the mixed morphology SNR G359.1-0.5

Eppens,

Albacete Colombo,

Combi

et al. 2022

Monthly Notices of the Royal Astronomical Society

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We present a detailed spatially resolved X-ray study of Chandra observations towards the central region of the supernova remnant (SNR) G359.1-0.5. We removed 168 point-like sources and performed an adaptive smoothing on the entire field-of-view of the Chandra ACIS-I observation. The images obtained show a extended X-ray emission below 4.0 keV that partially fills the interior of G359.1-0.5. In order to characterize the X-ray emission, we divide the emitting area into ten different regions inside the remnant. We identify the presence of at least four emission lines that confirm the thin thermal plasma origin. All spectral regions are well fitted by a recombining plasma model (VRNEI) with an absorbing column density range from 1.5 to 2.1 × 1022 cm−2, and electron temperatures from 0.14 to 0.19 keV. We also calculated an average electron density of 0.7 cm−3, estimated an age of 2.8 × 104 years for the remnant, which can be lower if the filling factor is considered, and an X-ray luminosity of 1.6 × 1035 erg s−1. Finally, we show that the X-ray emission is morphologically anti-correlated with adjacent CO clouds interacting with the SNR. Our results favour that the recombining plasma inside G359.1-0.5 could be explained via adiabatic cooling.

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Molecular environments of the supernova remnant G359.1−0.5

Cited by 3 publications

References 43 publications

Distances to the supernova remnants in the inner disk

Distances to the supernova remnants in the inner disk

Distances to the Supernova Remnants in the Inner Disk

Spatially resolved X-ray study of the mixed morphology SNR G359.1-0.5

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