The ANDICAM-SOFI Near-infrared and Optical type Ia Supernova (ASNOS) sample: Description and data release

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Authors: Kim Phan, Lluís Galbany, T. E. Müller-Bravo, S. Bose, C. R. Burns, D. Maximilian Stritzinger, Camilla T. G. Sørensen, Chris Ashall, Francisco Javier Castander, C. Palau, J. Johansson, Joseph P. Anderson
+4 more C. Ken. Chambers, Mariusz Gromadzki, J. Priscila Pessi, T. W. Chen
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Abstract

Type Ia supernovae (SNe Ia) provide the robustest means of measuring extragalactic distances. While increasing the number of SNe Ia observed in the optical has received most effort so far, near-infrared (NIR) observations remain scarce despite their advantages. The dust extinction in NIR observations is lower and the behavior of standard candles is more intrinsic and therefore requires little to no empirical corrections. We present the ANDICAM-SOFI Near-infrared and Optical type Ia Supernova (ASNOS) dataset with sample size of 1482 epochs in the BVRIYJH filters from the ANDICAM instrument on the 1.3-meter SMARTS telescope at Cerro Tololo Inter-American Observatory, along with 125 JHK epochs from the SOFI instrument on the 3.58-meter New Technology Telescope on the La Silla Observatory. Additionally, we incorporate optical forced photometry from the Zwicky Transient Facility and the Asteroid Terrestrial-impact Last Alert System. The sample comprises 41 SNe Ia in total, including 29 normal events, eight 1991T-like objects, and four peculiar subtypes, all located at redshifts z

Fields of Study & Subjects

Gamma-ray bursts and supernovae Cosmology and Gravitation Theories Galaxies: Formation Evolution Phenomena

Publication details

Journal / source
Springer Link (Chiba Institute of Technology)
Publication date
25 February 2026
Language
EN