Contributions to YSO research

Earlier this year, the HOYS project utilized some of our data in two new research papers focused on young stellar objects (YSOs). The details of these papers are outlined below.

Paper one

A survey for variable stars with small telescopes: IX – Evolution of Spot Properties on YSOs in IC5070

The first paper investigates the evolution of spot properties on YSOs in the IC 5070 region. This research focuses on understanding the variability in brightness and other properties of YSOs, which are crucial for studying stellar formation and evolution.

The study leveraged a network of amateur astronomers who coordinated their observations to ensure continuous monitoring. This collaborative approach allowed for more comprehensive coverage and reduced the gaps in data collection.

The involvement of amateur astronomers in such research projects demonstrates how citizen science can contribute to significant scientific advancements.

Paper 2

A survey for variable young stars with small telescopes: VIII - Properties of 1687 Gaia selected members in 21 nearby clusters

This second paper combines GAIA data with data from amateur astronomers to focus in on 45 different clusters and groups of co-moving stars.

By performing Light Curve Analysis of 1687 potential cluster members, It found that about 40% of the stars showed variability in the V-band, 38% in the R-band, and 29% in the I-band. Light curves affected by obscuration from circumstellar materials were more common than those affected by accretion bursts4. Two-thirds of periodic variables with disk excess emission were slow rotators, while two-thirds of those without disk excess were fast rotators, supporting the idea of a circumstellar disk braking mechanisms in operation.

Building Renovations

In July 2024 we replaced the 34 year old outer cladding which lasted a lot longer than it should have. The original woodwork was starting to rot so was replaced with treated shiplap cladding and a windproof membrane instead of the previous roofing felt backing. This new cladding should protect the telescope and camera and allow the dehumidifier to be more efficient when the observatory is closed.

The collage below shows the work, before, during and after. Still some remaining small work needed in the roof section.