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 128

23 June 2021|

For this weeks light curve of the week we return to the auxiliary data set and investigate the object ASASSN-V J210537.76+461530.1. Other than an entry in the ASAS-SN database, and [...]

Lightcurve of the week 127

15 June 2021|

We stay in the sigma-Ori cluster for this weeks light curve. The object we look at is known as 2MASS J05385410-0249297. The Gaia data places the star at the correct [...]

Lightcurve of the week 126

11 June 2021|

This week we look at another young star called TY Ori. It is situated in the Sigma-Ori target field of HOYS. This is a fun field as it contains a [...]

Lightcurve of the week 125

4 June 2021|

We are celebrating the 125th edition of the light curve of the week feature by looking back at an old friend - GM Cep. This is a known variable of [...]

Lightcurve of the week 124

27 May 2021|

This week we have a look at the variable young star NZ Mon. It is situated in the south of the NGC2264 star forming region. This young cluster harbours numerous [...]

Lightcurve of the week 123

19 May 2021|

This week we investigate another object in the auxiliary data. We look at the known eclipsing binary star V2772Cyg, which has a distance of about 3kpc. The period of the [...]

Lightcurve of the week 122

11 May 2021|

This week we are looking again at a southern hemisphere target. The object is known as 2MASS08294005-4146097. Not much is known about the source, but it is listed as a [...]

Lightcurve of the week 121

7 May 2021|

For this week we keep with the theme of giant stars and return to our auxiliary HOYS data set from the Cygnus Project. The phase folded light curve shown is [...]

Lightcurve of the week 120

30 April 2021|

This week we have a look at another Mira type variable star. It is the star V809Ori in our Lambda-Ori target field. The object is clearly a background star, but [...]

Lightcurve of the week 119

19 April 2021|

This week we have a look at a long term variable star in the P Cyg target field of HOYS. The star in question is V434Cyg, which is classified as [...]

Lightcurve of the week 118

15 April 2021|

The HOYS winter target that is visible the longest each spring is NGC2264 (The Christmas Tree Cluster). Within it there is a large variety of young and variable stars. Amongst [...]

Lightcurve of the week 117

8 April 2021|

This week we look at the star BE Ori, in our L1641N target field. This is one of our most southern fields in Orion and has now set for the [...]

Go to Top