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arXiv 2602.09096astro-ph.HEastro-ph.CO
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Ia型超新星的暗弱前导系统:2024vjm超新星

A Faint Progenitor System for the Faint Supernova 2024vjm

Weizmann Institute of Science(魏茨曼科学研究所);Radboud University(拉德堡德大学);University of Cape Town(开普敦大学);South African Astronomical Observatory(南非天文台);Institute of Science and Technology Austria(奥地利科学技术院);Anton Pannekoek Institute for Astronomy, University of Amsterdam(阿姆斯特丹大学安东·潘内科克天体物理研究所);INAF – Osservatorio Astronomico di Padova(意大利国家天体物理研究所帕多瓦天文台);University of California, Davis(加州大学戴维斯分校);Zhejiang University(浙江大学)
Erez A. Zimmerman, Avishay Gal-Yam, Paul J. Groot, Eran O. Ofek, Jan van Roestel, Andrea Pastorello, Stefano Valenti, Aravind P. Ravi, Ping Chen, Steve Schulze,… 展开作者

Erez A. Zimmerman, Avishay Gal-Yam, Paul J. Groot, Eran O. Ofek, Jan van Roestel, Andrea Pastorello, Stefano Valenti, Aravind P. Ravi, Ping Chen, Steve Schulze, Nadejda Blagorodnova, Maxime Wavasseur, Marco A. Gomez-Munoz, Hugo Tranin, Simon de Wet, Giorgos Leloudas, Paul M. Vreeswijk, Lindsey A. Kwok, Michaela Schwab, Saurabh W. Jha, Kate Maguire, David J. Sand, Eric Stringer, Thomas Kupfer, Tamar Faran, Joseph P. Anderson, Jennifer Andrews, Moira Andrews, Avshalom Badash, Steven Bloemen, K. Azalee Bostroem, Ting-Wan Chen, Massimo Della Valle, Georgios Dimitriadis, Yize Dong, Joseph R. Farah, James H. Gillanders, Benjamin Godson, Mariusz Gromadzki, Daichi Hiramatsu, Emily Hoang, D. Andrew Howell, Daryl Janzen, Hanindyo Kuncarayakti, Jiaxuan Li, Joseph D. Lyman, Keiichi Maeda, Mark R. Magee, Curtis McCully, Darshana Mehta, Andrew Milligan, Shane Moran, Yuan Qi Ni, David O'Neill, Jeniveve Pearson, Danielle L. A. Pieterse, Giuliano Pignata, Andrea Reguitti, Daniel E. Reichart, Nicolas Meza Retamal, Rita P. Santos, Simone Scaringi, Manisha Shrestha, Shubham Srivastav, Fiorenzo Stoppa, Bhagya Subrayan, Giorgio Valerin, Xiaofeng Wang, Kathryn Wynn, Ofer Yaron, Weicheng Zang

AI总结:

研究发现2024vjm超新星可能是最暗的Ia型超新星,其前身系统可能比已知的Iax前身更暗,且可能需要亚矮星氦星作为质量供体,挑战了传统Ia型超新星的模型。

摘要:

Ia型超新星(SNe Ia)因其作为可标准化的宇宙烛光而广为人知。其一致性归功于其单一起源于白矮星(WD)的热核爆炸。然而,一些SNe Ia打破了这种规律性。尤其是Iax子类,能量较低且异常多样,引发了对其前身系统的疑问。尽管从未发现过正常SNe Ia的前身系统,但在亮SN Iax SN 2012Z的爆炸前图像中识别出了一颗蓝超巨星,被认为是一个氦巨星伴星,作为向WD SN前身提供质量的供体。这与弱质量吸积的WD从二元伴星产生爆炸的模型一致,这种爆炸不完全破坏恒星。然而,这些模型无法解释最暗的Iax类爆炸的性质,表明它们可能起源于其他WD二元系统,甚至可能起源于大质量前身恒星。在此,我们提出了暗淡的SN Iax SN 2024vjm——可能是到目前为止观测到的最暗的超新星。利用欧几里得空间任务最近发射的深预爆炸图像,我们显示其前身系统必须比SN 2012Z的氦巨星前身候选者以及2008ha暗淡SN的蓝红色伴星或残骸更暗,并可能需要一个亚矮星氦星作为质量供体。深图像还提供了有力的证据,反驳了该暗淡超新星可能起源于大质量恒星的假设。我们的观测表明SN 2024vjm是WD爆炸,但我们发现异常暗淡的SNe Iax衰减更慢,即它们的演变方式与使常规SNe Ia成为宇宙烛光的著名的菲利普斯关系相反。

英文摘要:

Type Ia Supernovae (SNe Ia) are well known for their role as standardizable cosmological candles. Their uniformity is credited to their single origin as thermonuclear explosions of White dwarf (WD) stars. Nevertheless, some SNe Ia break this regularity. Prominently, the Iax subclass are less energetic and remarkably diverse, raising questions about their progenitor systems. While no progenitor system of a normal SN Ia has ever been detected, a luminous blue star was identified in pre-explosion images of the site of the bright SN Iax SN 2012Z, suggested to be a helium giant companion star acting as a mass donor to a WD SN progenitor. This is in line with models of weak mass accretion of a WD from a binary companion, producing an explosion that does not fully disrupt the star. However, these models fail to explain the properties of the faintest Type Iax explosions, suggesting either they originate from other WD binary systems, or even from massive progenitor stars. Here, we present the faint SN Iax SN 2024vjm - possibly the faintest supernova observed to date. Using a deep pre-explosion image taken by the recently launched Euclid space mission, we show that its progenitor system must be fainter than the helium giant SN Iax progenitor candidate of SN 2012Z, as well as that of the luminous red companion or remnant of the faint SN 2008ha, and may require a subdwarf helium star as a mass donor. The deep image also provides strong arguments against a massive star origin for this faint supernova. Our observations argue that SN 2024vjm is a WD explosion, but we find that remarkably faint SNe Iax fade more slowly than bright ones, i.e., they evolve in an opposite manner from the famous Phillips relation that makes regular SNe Ia cosmological candles.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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