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4U 1907+09: an HMXB running away from the Galactic plane

We report the discovery of a bow shock around the high-mass X-ray binary (HMXB) 4U 1907+09 using the <i>Spitzer <i/>Space Telescope 24 <i>μ<i/>m data (after Vela X-1 the second example of bow shocks associated with HMXBs). The detection of the bow shock implies that 4U 1907+0...

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Hauptverfasser: Gvaramadze, Vasilii V. (VerfasserIn) , Röser, Siegfried (VerfasserIn) , Scholz, R.-D. (VerfasserIn) , Schilbach, Elena (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2011
In: Astronomy and astrophysics
Year: 2011, Jahrgang: 529, Pages: 1-8
ISSN:1432-0746
DOI:10.1051/0004-6361/201016256
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/201016256
Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2011/05/aa16256-10/aa16256-10.html
Volltext
Verfasserangaben:V. V. Gvaramadze, S. Röser, R.-D. Scholz, and E. Schilbach
Beschreibung
Zusammenfassung:We report the discovery of a bow shock around the high-mass X-ray binary (HMXB) 4U 1907+09 using the <i>Spitzer <i/>Space Telescope 24 <i>μ<i/>m data (after Vela X-1 the second example of bow shocks associated with HMXBs). The detection of the bow shock implies that 4U 1907+09 is moving through space with a high (supersonic) peculiar velocity. To confirm the runaway nature of 4U 1907+09, we measured its proper motion, which for an adopted distance to the system of 4 kpc corresponds to a peculiar transverse velocity of ≃ 160 ± 115 km s<sup>-1<sup/>, meaning that 4U 1907+09 is indeed a runaway system. This also supports the general belief that most HMXBs possess high space velocities. The direction of motion of 4U 1907+09 inferred from the proper motion measurement is consistent with the orientation of the symmetry axis of the bow shock, and shows that the HMXB is running away from the Galactic plane. We also present the <i>Spitzer <i/>images of the bow shock around Vela X-1 (a system similar to 4U 1907+09) and compare it with the bow shock generated by 4U 1907+09.
Beschreibung:Gesehen am 21.07.2022
Beschreibung:Online Resource
ISSN:1432-0746
DOI:10.1051/0004-6361/201016256

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