The Gaia grid of spectro-photometric standard stars

被引：0

作者：

Sanna, N. ^{[1
]}

Pancino, E. ^{[1
,2
]}

Altavilla, G. ^{[2
,3
]}

Marinoni, S. ^{[2
,3
]}

Rainer, M. ^{[1
]}

机构：

[1] INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy

[2] Space Sci Data Ctr ASI, Via Politecn SNC, I-00133 Rome, Italy

[3] INAF Osservatorio Astron Roma, Via Frascati 33, I-00078 Rome, Italy

来源：

OBSERVATORY OPERATIONS: STRATEGIES, PROCESSES, AND SYSTEMS VIII | 2020年 / 11449卷

关键词：

standard stars; calibration; UBVRI;

D O I：

10.1117/12.2560520

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

We describe the preliminary results of a ground-based observing campaign aimed at building a grid of approximately 200 spectro-photometric standard stars (SPSS), with an internal similar or equal to 1% accuracy (and sub-percent precision), tied to CALSPEC Vega and Sirius systems within similar or equal to 1%, for the absolute flux calibration of data gathered by Gaia, the European Space Agency (ESA) astrometric mission. The criteria for the selection and a list of candidates are presented, together with a description of the survey's strategy and the adopted data analysis methods. All candidates were also monitored for constancy (within +/- 5 mmag, approximately). The present version of the grid contains about half of the final sample, it has already reached the target accuracy but the precision will substantially improve with future releases. It will be used to calibrate the Gaia (E)DR3 release of spectra and photometry.

引用

页数：8