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arXiv:0711.4107 (astro-ph)
[Submitted on 26 Nov 2007 (v1), last revised 8 Feb 2008 (this version, v3)]

Title:The Distance of the SNR Kes 75 and PWN PSR J1846-0258 System

Authors:Denis A. Leahy, Wenwu Tian
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Abstract: The supernova remnant (SNR) Kes 75/PSR J1846-0258 association can be regarded as certain due to the accurate location of young PSR J1846-0258 at the center of Kes 75 and the detected bright radio/X-ray synchrotron nebula surrounding the pulsar. We provide a new distance estimate to the SNR/pulsar system by analyzing the HI and $^{13}$CO maps, the HI emission and absorption spectra, and the $^{13}$CO emission spectrum of Kes 75. No absorption features at negative velocities strongly argue against the widely-used large distance of 19 to 21 kpc for Kes 75, and show that Kes 75 is within the Solar circle, i.e. a distance $d<$13.2 kpc. Kes 75 is likely at distance of 5.1 to 7.5 kpc because the highest HI absorption velocity is at 95 km/s and no absorption is associated with a nearby HI emission peak at 102 km/s in the direction of Kes 75. This distance to Kes 75 gives a reasonable luminosity of PSR J1846-0258 and its PWN, and also leads to a much smaller radius for Kes 75. So the age of the SNR is consistent with the spin-down age of PSR J1846-0258, confirming this pulsar as the second-youngest in the Galaxy.
Comments: 5 pages, two pictures, A&A letters
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0711.4107 [astro-ph]
  (or arXiv:0711.4107v3 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0711.4107
Related DOI: https://doi.org/10.1051/0004-6361%3A20079149

Submission history

From: Wenwu Tian [view email]
[v1] Mon, 26 Nov 2007 22:04:30 UTC (178 KB)
[v2] Mon, 17 Dec 2007 18:08:21 UTC (192 KB)
[v3] Fri, 8 Feb 2008 21:47:24 UTC (200 KB)
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