Title: Constraints on the Progenitor System of the Type Ia Supernova 2014J from Pre-Explosion Hubble Space Telescope Imaging Show Chinese title

Title: 2014J型Ia超新星前身系统的研究限制——基于哈勃空间望远镜的爆炸前成像

Abstract: We constrain the properties of the progenitor system of the highly reddened Type Ia supernova (SN) 2014J in Messier 82 (M82; d ~ 3.5 Mpc). We determine the SN location using Keck-II K-band adaptive optics images, and we find no evidence for flux from a progenitor system in pre-explosion near-ultraviolet through near-infrared Hubble Space Telescope (HST) images. Our upper limits exclude systems having a bright red giant companion, including symbiotic novae with luminosities comparable to that of RS Ophiuchi. While the flux constraints are also inconsistent with predictions for comparatively cool He-donor systems (T < ~35,000 K), we cannot preclude a system similar to V445 Puppis. The progenitor constraints are robust across a wide range of R_V and A_V values, but significantly greater values than those inferred from the SN light curve and spectrum would yield proportionally brighter luminosity limits. The comparatively faint flux expected from a binary progenitor system consisting of white dwarf stars would not have been detected in the pre-explosion HST imaging. Infrared HST exposures yield more stringent constraints on the luminosities of very cool (T < 3000 K) companion stars than was possible in the case of SN Ia 2011fe. Show Chinese abstract

Abstract: 我们限制了梅西耶82（M82；d ~ 3.5 Mpc）中高度红化Ia型超新星（SN）2014J的前身系统的性质。我们使用凯克II号K波段自适应光学图像确定了超新星的位置，并且在爆炸前从近紫外到近红外哈勃空间望远镜（HST）图像中没有发现前身系统发出的辐射证据。我们的上限排除了具有明亮红巨星伴星的系统，包括光度与RS奥米克戎相似的共生新星。虽然通量限制也与相对凉爽的氦供体系统（T < ~35,000 K）的预测不符，但我们不能排除类似于V445 Puppis的系统。前身系统约束在广泛的R_V和A_V值范围内是稳健的，但如果这些值显著大于超新星光曲线和光谱推断的值，则会导致亮度限制相应增加。由白矮星组成的双星前身系统的预期微弱辐射在爆炸前的HST成像中不会被检测到。红外HST曝光对非常冷（T < 3000 K）伴星的亮度限制比SN Ia 2011fe的情况更为严格。