Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq

doi:10.3847/1538-4357/ad0153

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	Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq
	Pearson, Jeniveve 18; Sand, David J.18; Lundqvist, Peter 17; Galbany, Lluís 15,16; Andrews, Jennifer E.14; Bostroem, K. Azalee 18; Dong, Yize 13; Hoang, Emily 13; Hosseinzadeh, Griffin 18; Janzen, Daryl 12
刊名	ASTROPHYSICAL JOURNAL
	2024
卷号	960 期号:1
ISSN号	0004-637X
DOI	10.3847/1538-4357/ad0153
产权排序	第21完成单位
文献子类	Article
英文摘要	We present optical, infrared, ultraviolet, and radio observations of SN 2022xkq, an underluminous fast-declining Type Ia supernova (SN Ia) in NGC 1784 (D approximate to 31 Mpc), from <1 to 180 days after explosion. The high-cadence observations of SN 2022xkq, a photometrically transitional and spectroscopically 91bg-like SN Ia, cover the first days and weeks following explosion, which are critical to distinguishing between explosion scenarios. The early light curve of SN 2022xkq has a red early color and exhibits a flux excess that is more prominent in redder bands; this is the first time such a feature has been seen in a transitional/91bg-like SN Ia. We also present 92 optical and 19 near-infrared (NIR) spectra, beginning 0.4 days after explosion in the optical and 2.6 days after explosion in the NIR. SN 2022xkq exhibits a long-lived C i 1.0693 mu m feature that persists until 5 days post-maximum. We also detect C ii lambda 6580 in the pre-maximum optical spectra. These lines are evidence for unburnt carbon that is difficult to reconcile with the double detonation of a sub-Chandrasekhar mass white dwarf. No existing explosion model can fully explain the photometric and spectroscopic data set of SN 2022xkq, but the considerable breadth of the observations is ideal for furthering our understanding of the processes that produce faint SNe Ia.
学科主题	天文学
URL标识	查看原文
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
资助项目	National Science Foundation (NSF)https://doi.org/10.13039/100000001[AST-1821987]; National Science Foundation (NSF)https://doi.org/10.13039/100000001[1813466]; National Science Foundation (NSF)https://doi.org/10.13039/100000001[1908972]; National Science Foundation (NSF)https://doi.org/10.13039/100000001[2108032]; National Science Foundation (NSF)https://doi.org/10.13039/100000001[2308181]; NSF[2020-1864]; Heising-Simons Foundation
WOS关键词	DELAYED-DETONATION MODELS ; RADIATIVE-TRANSFER CALCULATIONS ; CHANDRASEKHAR-MASS EXPLOSIONS ; ZTF EARLY OBSERVATIONS ; OSIRIS TUNABLE IMAGER ; NEAR-INFRARED CARBON ; WHITE-DWARF MODELS ; LIGHT-CURVE SHAPES ; PROGENITOR SYSTEM ; SUPERNOVA 1991BG
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:001127888400001
资助机构	National Science Foundation (NSF)https://doi.org/10.13039/100000001[AST-1821987, 1813466, 1908972, 2108032, 2308181] ; NSF[2020-1864] ; Heising-Simons Foundation
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/26453]
专题	云南天文台_丽江天文观测站（南方基地）
作者单位	1.National Astronomical Research Institute of Thailand (NARIT), Don Kaeo, Mae Rim District, Chiang Mai 50180, Thailand; 2.Department of Astronomy, The Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA; 3.Center for Cosmology and Astroparticle Physics, The Ohio State University, 191 West Woodruff Ave, Columbus, OH 43210, USA 4.Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064-1077, USA; 5.School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia; 6.Department of Physics, Virginia Tech, 850 West Campus Drive, Blacksburg, VA 24061, USA; 7.Millennium Institute of Astrophysics MAS, Nuncio Monsenor Sotero Sanz 100, Off. 104, Providencia, Santiago, Chile; 8.European Southern Observatory, Alonso de Córdova 3107, Casilla 19, Santiago, Chile; 9.Department of Astronomy, University of Washington, 3910 15th Avenue NE, Seattle, WA 98195-0002, USA; 10.W. M. Keck Observatory, 65-1120 Māmalahoa Highway, Kamuela, HI 96743-8431, USA;
推荐引用方式 GB/T 7714	Pearson, Jeniveve,Sand, David J.,Lundqvist, Peter,et al. Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq[J]. ASTROPHYSICAL JOURNAL,2024,960(1).
APA	Pearson, Jeniveve.,Sand, David J..,Lundqvist, Peter.,Galbany, Lluís.,Andrews, Jennifer E..,...&Young, D. R..(2024).Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq.ASTROPHYSICAL JOURNAL,960(1).
MLA	Pearson, Jeniveve,et al."Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq".ASTROPHYSICAL JOURNAL 960.1(2024).