Science2024-03-20T13:00:54+00:00

SCIENCE

Some talks, presentations, articles and papers from the project

Refereed Publications

Herbert C., Froebrich D., Vanaverbeke S., et al. 2024, A survey for variable young stars with small telescopes: IX – Evolution of Spot Properties on YSOs in IC 5070, MNRAS, in press (.pdf version)

Froebrich D., Scholz A., Campbell-White, J., et al. 2024, A survey for variable young stars with small telescopes: VIII – Properties of 1687 Gaia selected members in 21 nearby clusters, MNRAS, 529, 1283 (.pdf version)

Derezea, E., Kume, A., Froebrich, D., 2023, An application of Saddlepoint Approximation for period detection of stellar light observations, Journal of the Royal Statistical Society: Series C, Applied Statistics, 72, 1 (.pdf version)

Herbert C., Froebrich D., Scholz A., 2023, A survey for variable young stars with small telescopes: VII – Spot Properties on YSOs in IC5070, MNRAS, 520, 5433 (.pdf version)

Froebrich D., Hillenbrand, L.A., Herbert, C., et al. 2023, A survey for variable young stars with small telescopes: VI – Analysis of the outbursting Be stars NSW284, Gaia19eyy, and VES263, MNRAS, 520, 5413 (.pdf version)

Froebrich D., Eislöffel J., Stecklum B., Herbert C., Hambsch F.-J., 2022, A survey for variable young stars with small telescopes: V – Analysis of TXOri, V505Ori, and V510Ori, the HST ULLYSES targets in the σ Ori cluster, MNRAS, 510, 2883 (.pdf version)

Froebrich D., Derezea, E., Scholz A., et al., 2021, A survey for variable young stars with small telescopes: IV – Rotation Periods of YSOs in IC5070, MNRAS, 506, 5989 (.pdf version)

Froebrich, D., Scholz, A., Eislöffel, J., Stecklum, B., 2020, A survey for variable young stars with small telescopes: III – Warm spots on the active stars V1598Cyg, MNRAS, 497, 4602 (.pdf version)

Evitts, J.J.; Froebrich, D.; Scholz, A.; et al., 2020, A survey for variable young stars with small telescopes: II – Mapping a protoplanetary disk with stable structures at 0.15 AU, MNRAS, 493, 184 (.pdf version)

Hillenbrand, L.A., Contreras Pena, C., Morrell, S., et al., 2018, Gaia 17bpi: An FU Ori Type Outburst, ApJ, 869, 146 (.pdf version or Press Release)

Froebrich, D., Campbell-White, J., Scholz, A., et al., 2018, A survey for variable young stars with small telescopes: First results from HOYS-CAPS, MNRAS, 478, 5091 (.pdf version)

Sicilia-Aguilar, A., Oprandi, A., Froebrich, D., et al., 2017, The 2014-2017 outburst of the young star ASASSN-13db: A time-resolved picture of a very low-mass star between EXors and FUors, A&A, 2017, 607, 127 (.pdf version)

HOYS Publication Guidelines

All publications using any HOYS data should reference the project description paper (Froebrich et al. 2018, MNRAS, 478, 5091) and the data calibration paper (Evitts et al. 2020, MNRAS, 493, 184). If not all contributors of data are included in the author list, then the following should be added to the acknowledgements of every publication: “We would like to thank all contributors of observational data for their efforts towards the success of the HOYS project.”

We aim to disseminate the results of the science exploitation of the HOYS data with two kinds of publications. These are: i) larger, survey description type publications and ii) smaller, more specific publications.

We plan to write type i) publications about every one to two years. On these publications every participant who contributed data should be added as a co-author (if s/he wishes so), as well as everyone involved in the data analysis.

All other, type ii) publications using any HOYS data should include everyone as a co-author who made a significant contribution to the scientific analysis of the data and the preparation of the publication. Furthermore, any contributor who made a significant contribution to the dataset analysed in the publication should be added as co-author. In other words, anyone whose data cannot be removed without significantly degrading the quality of the analysis should be made a co-author.

Science Talks / Presentations / Articles

Hunting for Eruptive Young Stellar Objects, Article on the BAA website, advertising the expansions of the project to variable star observers in the UK.

Hunting for Eruptive Young Stellar Objects, Article in the BAA VSS Circular 174 (December 2017), advertising the expansions of the project to variable star observers in the UK.

Optical brightness and colours of V2492Cyg before, during and after the recent record peak in brightness, ATel10259, 12.04.2017

Froebrich, D., Scholz, A., Campbell-White, J., Crumpton, J., D’Arcy, E., Makin, S.V., Zegmott, T., Billington, S.J., Hibbert, R., Newport, R.J., Fisher, C.R. 2018, Variability in IC5070: two young stars with deep recurring eclipses, RNAAS, 2, 61 (.pdf version)

How to form stars and clusters and how to help us understand it, Stargazing Live Talk, 03.03.2017

The Physics of Star Formation, Public talk for Crayford Manor House Astronomical Society Dartford, 03.11.2016

Photometric Monitoring of nearby young Clusters as a Citizen Science Project, Poster at Star Formation 2016 Conference in Exeter, 24.08.2016

Photometric Monitoring of nearby young Clusters as a Citizen Science Project, Talk at Star Formation 2016 Conference in Exeter, 24.08.2016

The Physics of Star Formation, Talk at Hampshire Astronomical Group Meeting on 13.05.2016

The Physics of Star Formation, Talk at SEKAS Meeting on 09.01.2016

Hunting for Eruptive Young Stellar Objects, Article in the BAA VSS Circular 164 (June 2015), advertising the project to variable star observers in the UK.

Hunting for Eruptive Young Stellar Objects, Talk given at BAA Spring Meeting in Ashford on 25.04.2015, presenting some initial results of the search for high amplitute variables in NGC 2264.

LIGHT CURVES

Lightcurve of the week 262

17 January 2024|

In response to the large numbers of smart-scopes purchased recently, HOYS participant Mark Phillips describes how they can be used for the HOYS project.

Lightcurve of the week 261

11 January 2024|

We would like to dedicate this week's post to Roger Pickard, who sadly passed away at the end of last year. He was one of our first contributors of [...]

Lightcurve of the week 259

28 December 2023|

As promised a few weeks ago, here is the full light curve of the eruptive Be-star Gaia19eyy that has now been added to the data base since it re-opened. [...]

Lightcurve of the week 258

19 December 2023|

Some of the pupils in our HOYS-LCO project have started to create some colour images from the images they have taken. We thought we'd share them and what they [...]

Lightcurve of the week 257

14 December 2023|

Last week's post was about the erupting Be-type star Gaia19eyy. As discussed, we published our detailed analysis of this object in the fifth paper in our series, entitled: "A [...]

Lightcurve of the week 256

7 December 2023|

We have now in excess of 100,000 images fully processed into our data base. A huge THANK YOU to everyone who is providing the data, and a special thanks [...]

Lightcurve of the week 255

30 November 2023|

We usually look at different stars each week, but this week we make an exception. In last weeks post, we looked at the young star RW Ori which is situated [...]

Lightcurve of the week 254

23 November 2023|

This week we have a look at the young star RW Ori, which is situated in the sigma-Ori target field of HOYS. The object is known as an Orion [...]

Lightcurve of the week 253

16 November 2023|

Just over a year ago we looked at the light curve of the star TT-Ori, which was announced as the Gaia alert object Gaia22ehy. So it is time to [...]

Lightcurve of the week 252

9 November 2023|

This week we have a timely look at a newly (Nov 4) Gaia identified variable in one of our fields, but stay with last weeks theme of discussing caution [...]

Lightcurve of the week 251

3 November 2023|

The light curve shown above looks very interesting. The seems to increase its variability over time, especially in the shorter wavelengths filters. However, it turns out that this is [...]

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