Science2020-09-30T16:02:27+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

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 93:

20 October 2020|

This week we actually have a look at three different light curves. They are of the stars V505Ori, V510Ori, and TX Ori. These are all situated in the target area [...]

Lightcurve of the week 92:

16 October 2020|

Similar to last week we have a look back at an object that has featured before. This week it is the variable star V350Cep. The star is situated just north [...]

Lightcurve of the week 91:

9 October 2020|

This week we have a look back at an 'old friend' of the HOYS project, the unusual variable V2492Cyg. It has featured a few times as light curve of the [...]

Lightcurve of the week 90:

1 October 2020|

This week we look at the star OT Mon near the Cone Nebula. The object is a known T-Tauri star and the light curve shows that it is variable on [...]

Lightcurve of the week 89:

23 September 2020|

This week we have another look at the light curve of the long period variable V1376Cyg. This is a background giant star (Gaia distance about 4100kpc - or 13000 light [...]

Lightcurve of the week 88:

16 September 2020|

This week we have a look at the star V1706Cyg in the pelican nebula. While projected onto the star forming region, the Gaia parallax places it at a distance of [...]

Lightcurve of the week 87:

11 September 2020|

It is time to have a new look at the object 2MASS 21383981+5708470, situated in the Elephant trunk nebula field. The object might be projected onto the IC1396 HII region, [...]

Lightcurve of the week 86:

2 September 2020|

This weeks object is LkHa148. It is topical, since it has been announced as a Gaia photometry alert yesterday - showing a 0.6mag 'outburst' two days earlier (Sunday afternoon, 30.08.2020). [...]

Lightcurve of the week 85:

28 August 2020|

This week we have a look at the light curve of the star 2MASS20504836+4407398 in the field of the Pelican Nebula. We show the HOYS data in V, R, and [...]

Lightcurve of the Week 84:

19 August 2020|

For one more week we are sticking with eclipsing binaries. In the field near the star P Cyg we find the object 2MASS J20180945+3818279. According to the SIMBAD database, this [...]

Lightcurve of the Week 83:

12 August 2020|

This week we have a look at another binary system. The object KH15D near the Christmas Tree Cluster and the Cone Nebula, known as NGC2264. The system shows eclipses, but [...]

Lightcurve of the Week 82

7 August 2020|

This weeks light curve is of the star CRTS J032905.5+305924. It is a member of the NGC1333 star forming region, according to the parallax from Gaia, which places it at [...]

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