Matches in SemOpenAlex for { <https://semopenalex.org/work/W3106455791> ?p ?o ?g. }
- W3106455791 endingPage "112" @default.
- W3106455791 startingPage "112" @default.
- W3106455791 abstract "The ultra-faint satellite galaxy Hercules has a strongly elongated and irregular morphology with detections of tidal features up to 1.3 deg (3 kpc) from its center. This suggests that Hercules may be dissolving under the Milky Way's gravitational influence, and hence could be a tidal stream in formation rather than a bound, dark-matter dominated satellite. Using Bayesian inference in combination with N-body simulations, we show that Hercules has to be on a very eccentric orbit (epsilon~0.95) within the Milky Way in this scenario. On such an orbit, Hercules explodes as a consequence of the last tidal shock at pericenter 0.5 Gyr ago. It is currently decelerating towards apocenter of its orbit with a velocity of V=157 km/s -- of which 99% is directed radially outwards. Due to differential orbital precession caused by the non-spherical nature of the Galactic potential, its debris fans out nearly perpendicular to its orbit. This explains why Hercules has an elongated shape without showing a distance gradient along its main body: it is in fact a stream that is significantly broader than it is long. In other words, it is moving perpendicular to its apparent major axis. In this scenario, there is a spike in the radial velocity profile created by the dominant debris component that formed through the last pericenter passage. This is similar to kinematic substructure that is observed in the real Hercules. Modeling a satellite on such a highly eccentric orbit is strongly dependent on the form of the Galactic potential. We therefore propose that detailed kinematic investigation of Hercules and other exploding satellite candidates can yield strong constraints on the potential of the Milky Way." @default.
- W3106455791 created "2020-11-23" @default.
- W3106455791 creator A5007307448 @default.
- W3106455791 creator A5035172464 @default.
- W3106455791 creator A5063480117 @default.
- W3106455791 creator A5067301203 @default.
- W3106455791 creator A5083524651 @default.
- W3106455791 date "2017-01-06" @default.
- W3106455791 modified "2023-10-02" @default.
- W3106455791 title "EXPLODING SATELLITES—THE TIDAL DEBRIS OF THE ULTRA-FAINT DWARF GALAXY HERCULES" @default.
- W3106455791 cites W1526547736 @default.
- W3106455791 cites W1856433076 @default.
- W3106455791 cites W1861738746 @default.
- W3106455791 cites W1902616313 @default.
- W3106455791 cites W1966560456 @default.
- W3106455791 cites W1969724552 @default.
- W3106455791 cites W1975191314 @default.
- W3106455791 cites W1975777470 @default.
- W3106455791 cites W1975909368 @default.
- W3106455791 cites W1976477989 @default.
- W3106455791 cites W1984607950 @default.
- W3106455791 cites W1998612190 @default.
- W3106455791 cites W2010331079 @default.
- W3106455791 cites W2010745282 @default.
- W3106455791 cites W2016888075 @default.
- W3106455791 cites W2025793103 @default.
- W3106455791 cites W2027611485 @default.
- W3106455791 cites W2032707339 @default.
- W3106455791 cites W2040882516 @default.
- W3106455791 cites W2041542911 @default.
- W3106455791 cites W2044871077 @default.
- W3106455791 cites W2055843263 @default.
- W3106455791 cites W2056884371 @default.
- W3106455791 cites W2080724433 @default.
- W3106455791 cites W2089745679 @default.
- W3106455791 cites W2102155846 @default.
- W3106455791 cites W2105931584 @default.
- W3106455791 cites W2119196436 @default.
- W3106455791 cites W2135625048 @default.
- W3106455791 cites W2140427427 @default.
- W3106455791 cites W2150486055 @default.
- W3106455791 cites W2168420728 @default.
- W3106455791 cites W2172148933 @default.
- W3106455791 cites W2202530851 @default.
- W3106455791 cites W2291372011 @default.
- W3106455791 cites W2319697015 @default.
- W3106455791 cites W2336676734 @default.
- W3106455791 cites W2735248503 @default.
- W3106455791 cites W2951740296 @default.
- W3106455791 cites W3037368180 @default.
- W3106455791 cites W3098243612 @default.
- W3106455791 cites W3098366782 @default.
- W3106455791 cites W3098924641 @default.
- W3106455791 cites W3100110286 @default.
- W3106455791 cites W3101038537 @default.
- W3106455791 cites W3102014803 @default.
- W3106455791 cites W3103170606 @default.
- W3106455791 cites W3103258910 @default.
- W3106455791 cites W3103338815 @default.
- W3106455791 cites W3103452718 @default.
- W3106455791 cites W3103689984 @default.
- W3106455791 cites W3104057791 @default.
- W3106455791 cites W3105447105 @default.
- W3106455791 cites W3105639637 @default.
- W3106455791 cites W3106537694 @default.
- W3106455791 cites W3124246052 @default.
- W3106455791 cites W3124462114 @default.
- W3106455791 cites W3125694640 @default.
- W3106455791 cites W3125696588 @default.
- W3106455791 cites W4298296175 @default.
- W3106455791 doi "https://doi.org/10.3847/1538-4357/834/2/112" @default.
- W3106455791 hasPublicationYear "2017" @default.
- W3106455791 type Work @default.
- W3106455791 sameAs 3106455791 @default.
- W3106455791 citedByCount "26" @default.
- W3106455791 countsByYear W31064557912017 @default.
- W3106455791 countsByYear W31064557912018 @default.
- W3106455791 countsByYear W31064557912019 @default.
- W3106455791 countsByYear W31064557912020 @default.
- W3106455791 countsByYear W31064557912021 @default.
- W3106455791 countsByYear W31064557912022 @default.
- W3106455791 countsByYear W31064557912023 @default.
- W3106455791 crossrefType "journal-article" @default.
- W3106455791 hasAuthorship W3106455791A5007307448 @default.
- W3106455791 hasAuthorship W3106455791A5035172464 @default.
- W3106455791 hasAuthorship W3106455791A5063480117 @default.
- W3106455791 hasAuthorship W3106455791A5067301203 @default.
- W3106455791 hasAuthorship W3106455791A5083524651 @default.
- W3106455791 hasBestOaLocation W31064557911 @default.
- W3106455791 hasConcept C121332964 @default.
- W3106455791 hasConcept C125311221 @default.
- W3106455791 hasConcept C127413603 @default.
- W3106455791 hasConcept C1276947 @default.
- W3106455791 hasConcept C146978453 @default.
- W3106455791 hasConcept C196644772 @default.
- W3106455791 hasConcept C44870925 @default.
- W3106455791 hasConcept C51244244 @default.
- W3106455791 hasConcept C555520305 @default.