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 276

25 April 2024|

This week we revisit a variable star from a previous post. In November 2022 we showed the light curve of V1787Ori, which is situated in the L1641N target region. [...]

Lightcurve of the week 275

19 April 2024|

This week we follow up on the post from week 214 (please read again first :-)). This particular part of the research on HOYS light curves aims to quantify [...]

Lightcurve of the week 274

11 April 2024|

This week we look at the new Gaia alert Gaia24beh. It was published yesterday (April 10, 2024) and the source is situated in the Pelican Nebula target region of [...]

Lightcurve of the week 273

4 April 2024|

This week we have a look at the newly published (~3weeks ago) Gaia alert source Gaia24ayj. The object is situated just North of the Orion Nebula and known as [...]

Lightcurve of the week 272

28 March 2024|

Two weeks ago we looked at the new Gaia alert source Gaia24avc, which was situated in the Elephant Trunk Nebula region. On the same date the alert source Gaia24avb [...]

Lightcurve of the week 271

20 March 2024|

This week we show a plot (Fig.5) from our latest paper using HOYS data, that got accepted last week: A survey for variable young stars with small telescopes: IX [...]

Lightcurve of the week 270

14 March 2024|

This week we have a timely look at a newly identified Gaia variable named Gaia24avc. It is situated in the Elephant Trunk Nebula region. It was identified 11 days [...]

Lightcurve of the week 269

5 March 2024|

This week we look at the light curve of an 'old friend' of the project. The young star V350Cep , situated in the NGC7129 cluster. It is a known young [...]

Lightcurve of the week 268

28 February 2024|

When you do a survey (like HOYS), one of the things you tend to find are things you did not expect. Well, here is one. One of our students [...]

Lightcurve of the week 267

21 February 2024|

Since we are slowly nearing 110 thousand images in our database and will celebrate our 10th anniversary in the autumn, we want to use this week for a general [...]

Lightcurve of the week 266

15 February 2024|

This week we have a timely look at the new Gaia alert source Gaia24ala. It has been flagged up as it showed a 1mag dimming event over a short [...]

Lightcurve of the week 265

6 February 2024|

Pat Devine tells us how to automate the preparation of Seestar files ready for upload to the HOYS server, including python scripts.

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