欧几里得：与深度调查一起寻找配对的超新星

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欧几里得：与深度调查一起寻找配对的超新星

Euclid: Searching for pair-instability supernovae with the Deep Survey

论文作者

Moriya, T. J., Inserra, C., Tanaka, M., Cappellaro, E., Della Valle, M., Hook, I., Kotak, R., Longo, G., Mannucci, F., Mattila, S., Tao, C., Altieri, B., Amara, A., Auricchio, N., Bonino, D., Branchini, E., Brescia, M., Brinchmann, J., Camera, S., Capobianco, V., Carbone, C., Carretero, J., Castellano, M., Cavuoti, S., Cimatti, A., Cledassou, R., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Corcione, L., Courbin, F., Cropper, M., Da Silva, A., Degaudenzi, H., Douspis, M., Dubath, F., Duncan, C. A. J., Dupac, X., Dusini, S., Ealet, A., Farrens, S., Ferriol, S., Frailis, M., Franceschi, E., Fumana, M., Garilli, B., Gillard, W., Gillis, B., Giocoli, C., Grazian, A., Grupp, F., Haugan, S. V. H., Holmes, W., Hormuth, F., Hornstrup, A., Jahnke, K., Kermiche, S., Kiessling, A., Kilbinger, M., Kitching, T., Kurki-Suonio, H., Ligori, S., Lilje, P. B., Lloro, I., Maiorano, E., Mansutti, O., Marggraf, O., Markovic, K., Marulli, F., Massey, R., McCracken, H. J., Melchior, M., Meneghetti, M., Meylan, G., Moresco, M., Moscardini, L., Munari, E., Niemi, S. M., Padilla, C., Paltani, S., Pasian, F., Pedersen, K., Pettorino, V., Poncet, M., Popa, L., Raison, F., Rhodes, J., Riccio, G., Rossetti, E., Saglia, R., Sartoris, B., Schneider, P., Secroun, A., Seidel, G., Sirignano, C., Sirri, G., Stanco, L., Tallada-Crespí, P., Taylor, A. N., Tereno, I., Toledo-Moreo, R., Torradeflot, F., Wang, Y., Zamorani, G., Zoubian, J., Andreon, S., Scottez, V., Morris, P. W.

论文摘要

配对超新星是理论上的超新星，尚未在观察中得到证实。预计它们存在于低金属性环境中。由于在较高的红移下总体金属性变得较低，因此探测高红移超新星的深近红外瞬态调查适合发现配对稳定的超新星。欧几里得卫星计划于2023年推出，具有近红外田野仪器，适用于高红移超新星调查。欧几里得深入调查计划定期观察跨越欧几里得的6年初级任务期的三个欧几里德深领域（总40 deg2）。虽然对欧几里德深场的观察结果并不频繁，但我们表明，成对稳定超新星的长时间持续时间将使我们能够搜索与欧几里德深度调查的高红移配对超新星。根据当前的欧几里得任务的观察计划，我们进行了调查模拟，以估算成对稳定超新星发现的预期数量。我们发现，在Euclid深入的调查中，可以发现多达数百个Z <〜3.5时的配对超新星。我们还表明，可以通过当前的欧几里德深度调查计划来确定的持续时间和颜色可以有效地识别配对超新星候选者。我们得出的结论是，如果欧几里得的任务可能会导致配对超新星的事件率与最近的理论研究所预测的那样高。我们还根据最新的观察计划，在欧几里得深度调查中更新了超浮肿超新星发现的预期数量。

Pair-instability supernovae are theorized supernovae that have not yet been observationally confirmed. They are predicted to exist in low-metallicity environments. Because overall metallicity becomes lower at higher redshifts, deep near-infrared transient surveys probing high-redshift supernovae are suitable to discover pair-instability supernovae. The Euclid satellite, which is planned to be launched in 2023, has a near-infrared wide-field instrument that is suitable for a high-redshift supernova survey. The Euclid Deep Survey is planned to make regular observations of three Euclid Deep Fields (40 deg2 in total) spanning the Euclid's 6 year primary mission period. While the observations of the Euclid Deep Fields are not frequent, we show that the predicted long duration of pair-instability supernovae would allow us to search for high-redshift pair-instability supernovae with the Euclid Deep Survey. Based on the current observational plan of the Euclid mission, we conduct survey simulations in order to estimate the expected numbers of pair-instability supernova discoveries. We find that up to several hundred pair-instability supernovae at z < ~ 3.5 can be discovered within the Euclid Deep Survey. We also show that pair-instability supernova candidates can be efficiently identified by their duration and color that can be determined with the current Euclid Deep Survey plan. We conclude that the Euclid mission can lead to the first confirmation of pair-instability supernovae if their event rates are as high as those predicted by recent theoretical studies. We also update the expected numbers of superluminous supernova discoveries in the Euclid Deep Survey based on the latest observational plan.

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