Science2021-07-20T11:42:49+01:00

SCIENCE

Some talks, presentations, articles and papers from the project

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.

Refereed Publications

Dirk Froebrich, Efthymia Derezea, Aleks Scholz, Jochen Eislöffel, Siegfried Vanaverbeke, Alfred Kume, Carys Herbert, Justyn Campbell-White, Niall Miller, Bringfried Stecklum, Sally V. Makin, Thomas Urtly, Francisco C. Soldán Alfaro, Erik Schwendeman, Geoffrey Stone, Mark Phillips, George Fleming, Rafael Gonzalez Farfán, Tonny Vanmunster, Michael A. Heald, Esteban Fernández Mañanes, Tim Nelson, Heinz-Bernd Eggenstein, Franky Dubois, Ludwig Logie, Steve Rau, Klaas Wiersema, Nick Quinn, Diego Rodriguez, Rafael Castillo García, Thomas Killestein, Tony Vale, Domenico Licchelli, Marc Deldem, Georg Piehler, Dawid Moładzierski, Krzysztof Kotysz, Katarzyna Kowalska , Przemyslaw Mikołajczyk, Stephen R.L. Futcher, Timothy P. Long, Mario Morales Aimar, Barry Merrikin, Stephen Johnstone, Pavol A. Dubovský, Igor Kudzej, Roger Pickard, Samuel J. Billington, Lord Dover, Tarik Zegmott, Jack J. Evitts, Alejandra Traspas Munia, Mark C. Price, 2021, A survey for variable young stars with small telescopes: IV – Rotation Periods of YSOs in IC5070, MNRAS, in press (.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.; Eislöffel, J.; Campbell-White, J.; Furnell, W.; Urtly, T.; Pickard, R.; Wiersema, K.; Dubovský, P.A.; Kudzej, I.; Naves, R.; Morales Aimar, M.; Castillo García, R.; Vanmunster, T.; Schwendeman, E.; Soldán Alfaro, F.C.; Johnstone, S.; Gonzalez Farfán, R.; Killestein, T.; Delgado Casal, J.; García de la Cuesta, F.; Roberts, D.; Kolb, U.; Montoro, L.; Licchelli, D.; Escartin Perez, A.; Perelló Perez, C.; Deldem, M.; Futcher, S.R. L.; Nelson, T.; Dvorak, S.; Moładzierski, D.; Quinn, N.; Kotysz, K.; Kowalska, K.; Mikołajczyk, P.; Fleming, G.; Phillips, M.; Vale, T.; Dubois, F.; Logie, L.; Rau, S.; Vanaverbeke, S.; Merrikin, B.; Fernández Mañanes, E.; Erdelyi, E.; Gonzalez Carballo, J.-L.; Limon Martinez, F.; Long, T.P.; San Segundo Delgado, A.; Salto González, J.L.; Tremosa Espasa, L.; Piehler, G.; Crumpton, J.; Dover, L.; Billington, S.J.; D’Arcy, E.; Makin, S.V.; Bringfried S. 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., Naylor, T., Kuhn, M.,A., Cutri, R.M., Rebull, L.M., Hodgkin, S., Froebrich, D., Mainzer, A.K. 2018, Gaia 17bpi: An FU Ori Type Outburst, ApJ, 869, 146 (.pdf version or Press Release)

Froebrich, D., Campbell-White, J., Scholz, A., Eislöffel, J., Zegmott, T., Billington, S.J., Donohoe, J., Makin, S.V., Hibbert, R., Newport, R.J., Pickard, R., Quinn, N., Rodda, T., Piehler, G., Shelley, M., Parkinson, S., Wiersema, K., Walton, I., 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., Fang, M., Prieto, J. L., Stanek, K., Scholz, A., Kochanek, C. S., Henning, Th., Gredel, R., Holoien, T. W.-S., Rabus, M., Shappee, B. J., Billington, S. J., Campbell-White, J., Zegmott, T. J., 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.

LIGHT CURVES

Lightcurve of the week 140

17 September 2021|

This week we look back at an old friend of the project. The very variable star V2492Cyg. It is situated in the Pelican Nebula (IC5070) one of our most observed [...]

Lightcurve of the week 139

8 September 2021|

This week we stay with the winter targets that do become visible in the mornings. We have a look at the star GR Mon in the NGC2264 cluster. The star [...]

Lightcurve of the week 138

1 September 2021|

Last week we looked at the star LkHa271. So lets look this week at the object which is the entry before this in the catalogue of emission line stars: LkHa270. [...]

Lightcurve of the week 137

25 August 2021|

This week we stick with the winter targets which are now slowly becoming visible again early in the morning. The object this week is LkHa271. It is situated in the [...]

Lightcurve of the week 136

20 August 2021|

This week we have had the first submission of new images for some of the Winter fields. In particular the not so well observed field around the target ASAS-SN-13db, which [...]

Lightcurve of the week 135

13 August 2021|

This week we have a look at the young star 2MASS J20505039+4450115. It is situated to the North of the Pelican Nebula. It is classified as a candidate long period [...]

Lightcurve of the week 134

6 August 2021|

This week we look at an interesting source in the only real southern HOYS field. The object is Gaia19eyy. It was originally picked up by Gaia as an outburst from [...]

Lightcurve of the week 133

30 July 2021|

This week we have a look at another young star. It is situated in the Sigma-Ori cluster just South of the belt stars in the Orion constellation. The object is [...]

Lightcurve of the week 132

22 July 2021|

This week we show the light curve of one of the objects from our latest paper "A survey for variable young stars with small telescopes: IV -Rotation Periods of YSOs [...]

Lightcurve of the week 131

16 July 2021|

This week we have another look at one of the background objects in one of our HOYS fields. We found this one by looking at the images of the IC1396A [...]

Lightcurve of the week 130

6 July 2021|

With the summer targets now all visible for all of the night, we have a look at a star in the IC5146 (Cocoon Nebula) field. This is also the field [...]

Lightcurve of the week 129

29 June 2021|

For this week we stay with the auxiliary data set and have a look at a periodic variable that has been mis-classified in the literature, has the wrong period, and [...]

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