利用SPHEREx探测新的银河系沃尔夫-拉叶星
Detection of new Galactic Wolf-Rayet stars with SPHEREx
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中文总结 AI 辅助
本研究评估SPHEREx任务通过提取候选星分光光度数据，确认13颗新银河系WR星，并展示其结合机器学习可探测远侧及麦哲伦云WR星的能力。
中文摘要 AI 辅助
我们评估了NASA探索者级任务SPHEREx在扩充银河系沃尔夫-拉叶（WR）星普查方面的潜力，方法是提取先前利用Gaia XP光谱识别出的30颗候选WR星的0.75–5微米分光光度数据。我们确认了额外的13颗银河系WR星（8颗WN型，5颗WC型），识别出3颗可能的[WC]型行星状星云中心星，以及2个He发射线源。SPHEREx通过将机器学习技术与审慎的候选源选择标准相结合，有潜力探测到银河系远侧相对孤立的额外WR星。事实上，SPHEREx的灵敏度足以识别明亮的麦哲伦云沃尔夫-拉叶星。
英文摘要
We assess the potential for the NASA Explorer SPHEREx mission in adding to the Milky Way census of Wolf-Rayet (WR) stars by extracting 0.75--5micron spectrophotometry of 30 candidate WR stars previously identified using Gaia XP spectra. We confirm an additional Galactic 13 WR (8 WN and 5 WC) stars, identify 3 probable [WC]-type central stars of Planetary Nebulae, plus 2 He emission line sources. SPHEREx has the potential to detect additional relatively isolated WR stars on the far size of the Milky Way by combining Machine Learning techniques with a judicious choice of candidate selection criteria. Indeed SPHEREx is sufficiently sensitive to identify bright Magellanic Cloud Wolf-Rayet stars.
发表机构
- University of Sheffield（谢菲尔德大学）
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