Refereed Publications
Hamilton, C.M., Chacko, A.B., Carson, G.A., et al., 2026, A Pre-Main Sequence Binary Viewed Through its Circumbinary Disk: A New Phase for KH 15D, A&A, in press
Froebrich, D., Herbert, C., Scholz, A., et al., 2026, A survey for variable young stars with small telescopes – XI. Spot Lifetimes and Coverage Distributions, MNRAS, 551, 1428
Fuhrmeister, B., Schneider, P. C., Eislöffel, J., Froebrich, D., Armeni, A., Frasca, A., Mauco, K., Stelzer, B., Manara, C. F., 2025, PENELLOPE: VIII. Veiling and extinction variations of V505 Ori, A&A, 704, 229
Ryan B.W., Stokes-Geddes H., Froebrich D., 2025, A survey for variable young stars with small telescopes: X – Comparing stochastic YSO light curves, MNRAS, 543, 1133
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, 529, 4856
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
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
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
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
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
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
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
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
Hillenbrand, L.A., Contreras Pena, C., Morrell, S., et al., 2018, Gaia 17bpi: An FU Ori Type Outburst, ApJ, 869, 146 (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
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
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 in the 3 years prior to the data analysis should be added as a co-author (if they so wish), 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.
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 403
This week we have a sneaky preview of one of the figures in our next paper - HOYSXII. The paper has now an almost complete draft which we will [...]
Lightcurve of the week 402
This week we show the light curve of the young star PR Ori, which is situated south of the Orion Nebula in the L1641N HOYS target region. This star [...]
Lightcurve of the week 401
It is "New Article Day" 🙂 We have written an article about HOYS for the Swiss Physical Society (SPS), which is their national professional association of Physicists coming from [...]
Lightcurve of the week 400
Welcome to the milestone 400th edition of the light curve of the week feature! This kind of snuck up on me without warning 🙂 I wonder if anyone has [...]
Lightcurve of the week 399
This week we show the light curve of the young star MO Mon. It is situated in a small dark globule right next to the Cone Nebula, which is [...]
Lightcurve of the week 398
This week we finally show a light curve again 🙂 The object is V1787Ori, just south or the Orion Nebula in the L1641N target field. In the image above [...]
Lightcurve of the week 397
What is your favourite HOYS target? Collectively it seems that the Orion Nebula (M42) is the most liked. At least we have the most images (almost 23800) for this [...]
Lightcurve of the week 396
It is New Paper Day! - AGAIN! 🙂 You can read the latest paper with HOYS involvement (accepted for publication this week) on this link. There is a link to [...]
Lightcurve of the week 395
HOYS stands for "Hunting Outbursting Young Stars" - and this week we actually show one 🙂 The above image is the R and I-band light curve of the young [...]
Lightcurve of the week 394
It is New Paper Day! You can read our latest paper (accepted for publication this week) on this link. There is a link to the full pdf on the [...]
Lightcurve of the week 393
This week we look at the young star GM Cep, an old friend of this feature 🙂 It is situated in the Elephant Trunk Nebula target region. The light [...]
Lightcurve of the week 392
This week just a quick reminder that we also do talks about HOYS to societies. Today I will be giving a short presentation to a group of educators about [...]