Euclid：利用深场巡天搜寻对不稳定超新星
高能天体物理现象
2023-05-23 v2 宇宙学与河外天体物理
星系天体物理
太阳与恒星天体物理
摘要
对不稳定超新星是理论预言但尚未经观测证实的超新星，预计存在于低金属丰度环境中。由于整体金属丰度在更高红移处更低，探测高红移超新星的深近红外暂现源巡天适于发现对不稳定超新星。计划于 2023 年发射的 Euclid 卫星配备有近红外宽视场仪器，适合高红移超新星巡天。Euclid 深场巡天计划在 Euclid 六年主任务期内对三个 Euclid 深场（总计 40 deg²）进行定期观测。尽管对 Euclid 深场的观测并不频繁，我们表明预言的对不稳定超新星的长持续时间将使我们能够利用 Euclid 深场巡天搜寻高红移对不稳定超新星。基于 Euclid 任务当前观测计划，我们进行巡天模拟以估计预期的对不稳定超新星发现数量。我们发现，在 Euclid 深场巡天中可发现多达数百颗 z < ~3.5 的对不稳定超新星。我们还表明，对不稳定超新星候选体可通过其在当前 Euclid 深场巡天计划下可确定的持续时标与颜色被高效甄别。我们得出结论：若对不稳定超新星的事件率如近期理论研究预言般高，则 Euclid 任务可带来对不稳定超新星的首次证实。我们还基于最新观测计划更新了 Euclid 深场巡天中超亮超新星发现的预期数量。
引用
@article{arxiv.2204.08727,
title = {Euclid: Searching for pair-instability supernovae with the Deep Survey},
author = {T. J. Moriya and C. Inserra and M. Tanaka and E. Cappellaro and M. Della Valle and I. Hook and R. Kotak and G. Longo and F. Mannucci and S. Mattila and C. Tao and B. Altieri and A. Amara and N. Auricchio and D. Bonino and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and V. Capobianco and C. Carbone and J. Carretero and M. Castellano and S. Cavuoti and A. Cimatti and R. Cledassou and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and L. Corcione and F. Courbin and M. Cropper and A. Da Silva and H. Degaudenzi and M. Douspis and F. Dubath and C. A. J. Duncan and X. Dupac and S. Dusini and A. Ealet and S. Farrens and S. Ferriol and M. Frailis and E. Franceschi and M. Fumana and B. Garilli and W. Gillard and B. Gillis and C. Giocoli and A. Grazian and F. Grupp and S. V. H. Haugan and W. Holmes and F. Hormuth and A. Hornstrup and K. Jahnke and S. Kermiche and A. Kiessling and M. Kilbinger and T. Kitching and H. Kurki-Suonio and S. Ligori and P. B. Lilje and I. Lloro and E. Maiorano and O. Mansutti and O. Marggraf and K. Markovic and F. Marulli and R. Massey and H. J. McCracken and M. Melchior and M. Meneghetti and G. Meylan and M. Moresco and L. Moscardini and E. Munari and S. M. Niemi and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and V. Pettorino and M. Poncet and L. Popa and F. Raison and J. Rhodes and G. Riccio and E. Rossetti and R. Saglia and B. Sartoris and P. Schneider and A. Secroun and G. Seidel and C. Sirignano and G. Sirri and L. Stanco and P. Tallada-Crespí and A. N. Taylor and I. Tereno and R. Toledo-Moreo and F. Torradeflot and Y. Wang and G. Zamorani and J. Zoubian and S. Andreon and V. Scottez and P. W. Morris},
journal= {arXiv preprint arXiv:2204.08727},
year = {2023}
}
备注
12 pages, 13 figures, 2 tables, accepted by Astronomy & Astrophysics