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The fastest unbound star in our Galaxy ejected by a thermonuclear supernova.

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Title: The fastest unbound star in our Galaxy ejected by a thermonuclear supernova.
Authors: Geier, S., Fürst, F., Ziegerer, E., Kupfer, T., Heber, U., Irrgang, A., Wang, B., Liu, Z., Han, Z., Sesar, B., Levitan, D., Kotak, R., Magnier, E., Smith, K., Burgett, W. S., Chambers, K., Flewelling, H., Kaiser, N., Wainscoat, R., Waters, C.
Source: Science (pre-March 2025). 3/6/2015, Vol. 347 Issue 6226, p1126-1128. 3p.
Subjects: Supernovae, Hypervelocity, B stars, Radial velocity of stars, Escape velocity, Binary stars, Spectrum analysis
Abstract: Hypervelocity stars (HVSs) travel with velocities so high that they exceed the escape velocity of the Galaxy. Several acceleration mechanisms have been discussed. Only one HVS (US 708, HVS 2) is a compact helium star. Here we present a spectroscopic and kinematic analysis of US 708. Traveling with a velocity of ~1200 kilometers per second, it is the fastest unbound star in our Galaxy. In reconstructing its trajectory, the Galactic center becomes very unlikely as an origin, which is hardly consistent with the most favored ejection mechanism for the other HVSs. Furthermore, we detected that US 708 is a fast rotator. According to our binary evolution model, it was spun-up by tidal interaction in a close binary and is likely to be the ejected donor remnant of a thermonuclear supernova. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: The fastest unbound star in our Galaxy ejected by a thermonuclear supernova.
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  Data: <searchLink fieldCode="AR" term="%22Geier%2C+S%2E%22">Geier, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Fürst%2C+F%2E%22">Fürst, F.</searchLink><br /><searchLink fieldCode="AR" term="%22Ziegerer%2C+E%2E%22">Ziegerer, E.</searchLink><br /><searchLink fieldCode="AR" term="%22Kupfer%2C+T%2E%22">Kupfer, T.</searchLink><br /><searchLink fieldCode="AR" term="%22Heber%2C+U%2E%22">Heber, U.</searchLink><br /><searchLink fieldCode="AR" term="%22Irrgang%2C+A%2E%22">Irrgang, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+B%2E%22">Wang, B.</searchLink><br /><searchLink fieldCode="AR" term="%22Liu%2C+Z%2E%22">Liu, Z.</searchLink><br /><searchLink fieldCode="AR" term="%22Han%2C+Z%2E%22">Han, Z.</searchLink><br /><searchLink fieldCode="AR" term="%22Sesar%2C+B%2E%22">Sesar, B.</searchLink><br /><searchLink fieldCode="AR" term="%22Levitan%2C+D%2E%22">Levitan, D.</searchLink><br /><searchLink fieldCode="AR" term="%22Kotak%2C+R%2E%22">Kotak, R.</searchLink><br /><searchLink fieldCode="AR" term="%22Magnier%2C+E%2E%22">Magnier, E.</searchLink><br /><searchLink fieldCode="AR" term="%22Smith%2C+K%2E%22">Smith, K.</searchLink><br /><searchLink fieldCode="AR" term="%22Burgett%2C+W%2E+S%2E%22">Burgett, W. S.</searchLink><br /><searchLink fieldCode="AR" term="%22Chambers%2C+K%2E%22">Chambers, K.</searchLink><br /><searchLink fieldCode="AR" term="%22Flewelling%2C+H%2E%22">Flewelling, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Kaiser%2C+N%2E%22">Kaiser, N.</searchLink><br /><searchLink fieldCode="AR" term="%22Wainscoat%2C+R%2E%22">Wainscoat, R.</searchLink><br /><searchLink fieldCode="AR" term="%22Waters%2C+C%2E%22">Waters, C.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 3/6/2015, Vol. 347 Issue 6226, p1126-1128. 3p.
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  Data: <searchLink fieldCode="DE" term="%22Supernovae%22">Supernovae</searchLink><br /><searchLink fieldCode="DE" term="%22Hypervelocity%22">Hypervelocity</searchLink><br /><searchLink fieldCode="DE" term="%22B+stars%22">B stars</searchLink><br /><searchLink fieldCode="DE" term="%22Radial+velocity+of+stars%22">Radial velocity of stars</searchLink><br /><searchLink fieldCode="DE" term="%22Escape+velocity%22">Escape velocity</searchLink><br /><searchLink fieldCode="DE" term="%22Binary+stars%22">Binary stars</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink>
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  Data: Hypervelocity stars (HVSs) travel with velocities so high that they exceed the escape velocity of the Galaxy. Several acceleration mechanisms have been discussed. Only one HVS (US 708, HVS 2) is a compact helium star. Here we present a spectroscopic and kinematic analysis of US 708. Traveling with a velocity of ~1200 kilometers per second, it is the fastest unbound star in our Galaxy. In reconstructing its trajectory, the Galactic center becomes very unlikely as an origin, which is hardly consistent with the most favored ejection mechanism for the other HVSs. Furthermore, we detected that US 708 is a fast rotator. According to our binary evolution model, it was spun-up by tidal interaction in a close binary and is likely to be the ejected donor remnant of a thermonuclear supernova. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=101388953
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        Value: 10.1126/science.1259063
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        Text: English
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        Type: general
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      – SubjectFull: B stars
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      – SubjectFull: Escape velocity
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      – SubjectFull: Spectrum analysis
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