论文标题
\ textit {gaia}数据版本3：ia/iax supernova爆炸或动态遭遇的超跑和高速级白矮人候选人
Hyper-runaway and hypervelocity white dwarf candidates in \textit{Gaia} Data Release 3: possible remnants from Ia/Iax supernova explosions or dynamical encounters
论文作者
论文摘要
IA型和其他特殊的超新星（SNE）被认为源自白矮人（WDS）的热核爆炸。提出的一些渠道涉及在极高速度（$> 400 $> 400 $ km \，s $^{ - 1} $）下弹出部分爆炸的WD（例如IAX SN残留）或爆炸WD的伴侣。因此，这种超跑/超速度（HVS）WD的表征可能会阐明SNE的物理和起源。在这里，我们分析\ textIt {gaia} DR3数据以搜索HVS WDS候选物，以及特殊的子序列（sub-ms）对象。我们检索了先前确定的HVSS，并找到46个新的HVS候选者。其中，我们确定了两个新的未结合的WD和两个新的Unbound Sub-MS候选者。其余的恒星是Hyper-Runaway WDS和Hyper-Runaway Sub-MS恒星。 HVS WD和Sub-MS候选者的数字和特性表明，极端速度弹出（$> 1000 $ km \，s $^{ - 1} $）最多可以伴随IA SNE型的一小部分，而D6-Scenario对IA sne的原点造成了重要的贡献。混合WD反向测量通道之后的HVS弹出速率与已识别的HVSS一致。低速HVS WDS的数量可能与IAX型SNE原点和/或动态相遇的贡献一致。我们还搜索了与已知的SN残留物有关的HVS WD，但仅确定了一个候选人。
Type Ia and other peculiar supernovae (SNe) are thought to originate from the thermonuclear explosions of white dwarfs (WDs). Some of the proposed channels involve the ejection of a partly exploded WD (e.g. Iax SN remnant) or the companion of an exploding WD at extremely high velocities ($>400$ km\,s$^{-1}$). Characterisation of such hyper-runaway/hypervelocity (HVS) WDs might therefore shed light on the physics and origins of SNe. Here we analyse the \textit{Gaia} DR3 data to search for HVS WDs candidates, and peculiar sub-main-sequence (sub-MS) objects. We retrieve the previously identified HVSs, and find 46 new HVS candidates. Among these we identify two new unbound WDs and two new unbound sub-MS candidates. The remaining stars are hyper-runaway WDs and hyper-runaway sub-MS stars. The numbers and properties of the HVS WD and sub-MS candidates suggest that extreme velocity ejections ($>1000$ km\,s$^{-1}$) can accompany at most a small fraction of type Ia SNe, disfavouring a significant contribution of the D6-scenario to the origin of Ia SNe. The rate of HVS ejections following the hybrid WD reverse-detonation channel could be consistent with the identified HVSs. The numbers of lower-velocity HVS WDs could be consistent with type Iax SNe origin and/or contribution from dynamical encounters. We also searched for HVS WDs related to known SN remnants, but identified only one such candidate.
