The All Sky Young Association (ASYA): a new young association

TL;DR

This paper introduces the discovery and analysis of the All Sky Young Association (ASYA), a new young stellar group identified through a novel method applied to the SACY survey, providing insights into its properties and significance.

Contribution

The paper presents a new method for identifying young stellar associations and applies it to discover ASYA, the oldest young association in the SACY survey with 38 members.

Findings

ASYA has 38 bona fide members.

Estimated age of ASYA is 110 million years.

ASYA is the oldest young association in the SACY survey.

Abstract

To analyze the SACY (Search for Associations Containing Young stars) survey we developed a method to find young associations and to define their high probability members. These bona fide members enable to obtain the kinematical and the physical properties of each association in a proper way. Recently we noted a concentration in the UV plane and we found a new association we are calling ASYA (All Sky Young Association) for its overall distribution in the sky with a total of 38 bonafide members and an estimated age of 110 Myr, the oldest young association found in the SACY survey. We present here its kinematical, space and Li distributions and its HR diagram.