This paper is the data release of a new sample of 140 type Ia supernovae (SNe Ia) from the LaSilla-QUEST/Las Cumbres Observatory (LCO) collaboration. The discovery of the supernovae came from the LaSilla-QUEST variability survey, the ASASSN survey, as well as smaller low redshift supernova surveys. All of the supernovae in this sample were spectroscopically identified as SNe Ia using spectra from the PESSTO survey using the 3.5 m NTT telescope at LaSilla and spectra from the LCO 2 m Faulkes telescopes. The light-curves were obtained from a rapid cadence photometric follow up of the supernovae with the 9 LCO 1 m telescopes located at various observatories around the globe. Reference images of the host galaxies were taken approximately a year after the supernova have faded to allow precise galaxy background subtraction from the supernova magnitudes. The supernovae in this sample were discovered over a seven year period from 2012 October to 2019 June, and the last galaxy reference images were taken before 2020 June.

本文是 LaSilla-QUEST/Las Cumbres 天文台 (LCO) 合作的 140 颗 Ia 型超新星 (SNe Ia) 新样本的数据发布。超新星的发现来自 LaSilla-QUEST 变异性调查、ASASSN 调查以及较小的低红移超新星调查。使用 LaSilla 的 3.5 m NTT 望远镜进行的 PESSTO 勘测光谱和 LCO 2 m Faulkes 望远镜的光谱，将这个样本中的所有超新星光谱鉴定为 SNe Ia。光曲线是通过位于全球各个天文台的 9 个 LCO 1 m 望远镜对超新星进行快速节奏光度跟踪获得的。宿主星系的参考图像是在超新星消退大约一年后拍摄的，以便从超新星星等中精确减去星系背景。