ZTF-SEDm Type Ia supernova sample for Twins Embedding spectrophotometric standardization

Дата публикации: 18-08-2026 00:00:00

Aims. This paper has two aims: the first aim is to build a large homogeneous spectrophotometric sample of Type Ia supernovae (SNe Ia) from the second data release of the Zwicky Transient Facility (ZTF DR2). We used the spectrum sample from the low-resolution ( R ∼ 100) SEDmachine (SEDm) Integral Field Spectrograph (IFS) that gathered 3069 spectra. This is one of the largest samples of such collections that can attempt to reproduce the Twins Embedding (TE) spectrophotometric standardization method. This is our second objective. The method was developed based on high-quality spectra from 200 SNe Ia of the Nearby Supernova factory (SNfactory) and led to an exceptionally low value of 0.073 mag for the intrinsic scatter. Methods. As the SEDm is not designed as a spectrophotometric instrument, we first improved the flux-calibration accuracy of the SN Ia spectrum sample using the ZTF photometric data, which were calibrated at the percent level. We corrected the spectra for second-order...

Схожие новости

#	Наименование новости	Тональность	Информативность	Дата публикации
1	A Unified Photometric Redshift Calibration for Weak Lensing Surveys Using the Dark Energy Spectroscopic Instrument	0	7.2	04-08-2026
2	DESI DR1 Lyα 1D power spectrum: Validation of estimators	0	8.98	04-08-2026
3	HOLISMOKES XIX	0	9.55	18-08-2026
4	Energy Distribution of the Galactic Center Excess’s Sources	0	6.06	18-08-2026
5	Revisiting Approaches to Stellar White-Light Flare Energy Based on Spatiotemporally Resolved Solar Observations	0	11.63	30-06-2026
6	Galaxy Phase-space and Field-level Cosmology: The Strength of Semianalytic Models	0	8.61	18-08-2026
7	Atacama Cosmology Telescope: B-mode delensing with DR6 data and external tracers of large-scale structure	0	9.71	18-08-2026
8	BICEP/Keck XXI: Constraints on early-Universe parity violation from multipole-dependent birefringence	0	12.6	18-08-2026
9	Light-tight Skipper-CCDs for X-Ray Detection in Space	0	17.78	04-08-2026
10	Астроновости: взрыв внутри туманности, поиски первых звезд, термометр для ранней Вселенной…	3	7	04-11-2025

Классификация: Наука. Схожих патентов: 0. Схожих новостей: 10. Тональность: 0. Информативность: 8.35. Источник: escholarship.org.