AI 中文总结
研究建立了到造父变星 SV Vul 及其宿主星团阿利坎特 13 的新距离，通过 UKIDSS - DR6 测光和盖亚 DR3 观测等。发现它们可能属于更广泛星团，虽有相似特征，但 SV Vul 可能更亮，可靠径向速度或能证实相关假设。
AI 中文摘要
建立了到造父变星 SV Vul（周期约为 45 天）及其宿主星团阿利坎特 13 的新距离，部分基于 UKIDSS - DR6 更深的测光和盖亚 DR3 观测（距离为 2.30±0.13 千秒差距）。SV Vul 和阿利坎特 13 可能属于更广泛的同时期恒星复合体，可能包括刘庞 1738。通过多种分析表明星团和造父变星有相似特征，但 SV Vul 可能相对更亮。两个星团的可靠径向速度可证实某些假设。
英文摘要
A new distance was established to the Cepheid SV Vul ($P\simeq45^{d}$) and its host cluster Alicante 13, and is tied in part to deeper UKIDSS-DR6 photometry and Gaia DR3 observations ($d=2.30\pm0.13$ kpc). SV Vul and Alicante 13 possibly belong to a broader coeval stellar complex, which could include Liu-Pang 1738. The clusters and Cepheid share comparable astrometry (e.g., $σ_π\simeq0.02$ mas, $σ_{μ_δ}\simeq0.06$ mas yr$^{-1}$), and similar cluster turnoffs (ages) exist as indicated by ultraviolet UVEX color-color analyses, Gaia XP spectroscopically differentially dereddened color-magnitude diagrams, and Padova isochrones. Yet SV Vul may be comparatively overluminous. Robust radial velocities for both clusters could substantiate certain hypotheses.
CommentsTo appear in publication
