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A survey for variable young stars with small telescopes : IX - evolution of spot properties on YSOs in IC 5070
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dc.contributor.author | Herbert, Carys | |
dc.contributor.author | Froebrich, Dirk | |
dc.contributor.author | Vanaverbeke, Siegfried | |
dc.contributor.author | Scholz, Aleks | |
dc.contributor.author | Eislöffel, Jochen | |
dc.contributor.author | Urtly, Thomas | |
dc.contributor.author | Walton, Ivan L | |
dc.contributor.author | Wiersema, Klaas | |
dc.contributor.author | Quinn, Nick J | |
dc.contributor.author | Piehler, Georg | |
dc.contributor.author | Aimar, Mario Morales | |
dc.contributor.author | García, Rafael Castillo | |
dc.contributor.author | Vanmunster, Tonny | |
dc.contributor.author | Alfaro, Francisco C Soldán | |
dc.contributor.author | de la Cuesta, Faustino García | |
dc.contributor.author | Licchelli, Domenico | |
dc.contributor.author | Perez, Alex Escartin | |
dc.contributor.author | Mañanes, Esteban Fernández | |
dc.contributor.author | Ribes, Noelia Graciá | |
dc.contributor.author | González, José Luis Salto | |
dc.contributor.author | Futcher, Stephen R L | |
dc.contributor.author | Nelson, Tim | |
dc.contributor.author | Dvorak, Shawn | |
dc.contributor.author | Moździerski, Dawid | |
dc.contributor.author | Kotysz, Krzysztof | |
dc.contributor.author | Mikołajczyk, Przemysław | |
dc.contributor.author | Fleming, George | |
dc.contributor.author | Phillips, Mark | |
dc.contributor.author | Vale, Tony | |
dc.contributor.author | Dubois, Franky | |
dc.contributor.author | Eggenstein, Heinz-Bernd | |
dc.contributor.author | Heald, Michael A | |
dc.contributor.author | Lewin, Pablo | |
dc.contributor.author | OKeeffe, Derek | |
dc.contributor.author | Popowicz, Adam | |
dc.contributor.author | Bernacki, Krzysztof | |
dc.contributor.author | Malcher, Andrzej | |
dc.contributor.author | Lasota, Slawomir | |
dc.contributor.author | Fiolka, Jerzy | |
dc.contributor.author | Dustor, Adam | |
dc.contributor.author | Percy, Stephen C | |
dc.contributor.author | Devine, Pat | |
dc.contributor.author | Patel, Aashini L | |
dc.contributor.author | Dickers, Matthew D | |
dc.contributor.author | Dover, Lord | |
dc.contributor.author | Grozdanova, Ivana I | |
dc.contributor.author | Urquhart, James S | |
dc.contributor.author | Lynch, Chris J R | |
dc.date.accessioned | 2024-04-10T15:30:02Z | |
dc.date.available | 2024-04-10T15:30:02Z | |
dc.date.issued | 2024-04-04 | |
dc.identifier | 300892776 | |
dc.identifier | af7c5478-4aee-4c7a-8a2c-f4028469acf8 | |
dc.identifier | 85191995129 | |
dc.identifier.citation | Herbert , C , Froebrich , D , Vanaverbeke , S , Scholz , A , Eislöffel , J , Urtly , T , Walton , I L , Wiersema , K , Quinn , N J , Piehler , G , Aimar , M M , García , R C , Vanmunster , T , Alfaro , F C S , de la Cuesta , F G , Licchelli , D , Perez , A E , Mañanes , E F , Ribes , N G , González , J L S , Futcher , S R L , Nelson , T , Dvorak , S , Moździerski , D , Kotysz , K , Mikołajczyk , P , Fleming , G , Phillips , M , Vale , T , Dubois , F , Eggenstein , H-B , Heald , M A , Lewin , P , OKeeffe , D , Popowicz , A , Bernacki , K , Malcher , A , Lasota , S , Fiolka , J , Dustor , A , Percy , S C , Devine , P , Patel , A L , Dickers , M D , Dover , L , Grozdanova , I I , Urquhart , J S & Lynch , C J R 2024 , ' A survey for variable young stars with small telescopes : IX - evolution of spot properties on YSOs in IC 5070 ' , Monthly Notices of the Royal Astronomical Society , vol. 529 , no. 4 . https://doi.org/10.1093/mnras/stae812 | en |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | Jisc: 1869116 | |
dc.identifier.uri | https://hdl.handle.net/10023/29637 | |
dc.description | CH is supported by the Science and Technology Facilities Council under grant number STFCKent2020DTPST/V50676X/1. This research has been partially supported by the supercomputing infrastructure of the NLHPC (ECM-02) in Chile. | en |
dc.description.abstract | We present spot properties on 32 periodic young stellar objects in IC 5070. Long term, ∼5 yr, light curves in the V, R, and I-bands are obtained through the HOYS (Hunting Outbursting Young Stars) citizen science project. These are dissected into six months long slices, with 3 months oversampling, to measure 234 sets of amplitudes in all filters. We fit 180 of these with reliable spot solutions. Two thirds of spot solutions are cold spots, the lowest is 2150 K below the stellar temperature. One third are warm spots that are above the stellar temperature by less than ∼2000 K. Cold and warm spots have maximum surface coverage values of 40 per cent, although only 16 per cent of warm spots are above 20 per cent surface coverage as opposed to 60 per cent of the cold spots. Warm spots are most likely caused by a combination of plages and low density accretion columns, most common on objects without inner disc excess emission in K − W2. Five small hot spot solutions have <3 percent coverage and are 3000 – 5000 K above the stellar temperature. These are attributed to accretion, and four of them occur on the same object. The majority of our objects are likely to be accreting. However, we observe very few accretion hot spots as either the accretion is not stable on our timescale or the photometry is dominated by other features. We do not identify cyclical spot behaviour on the targets. We additionally identify and discuss a number of objects that have interesting amplitudes, phase changes, or spot properties. | |
dc.format.extent | 6349089 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | en |
dc.subject | Stars: formation | en |
dc.subject | Stars: pre-main-sequence | en |
dc.subject | Stars: star spots | en |
dc.subject | Stars: variables: T Tauri | en |
dc.subject | Stars: rotation | en |
dc.subject | 3rd-DAS | en |
dc.title | A survey for variable young stars with small telescopes : IX - evolution of spot properties on YSOs in IC 5070 | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. St Andrews Centre for Exoplanet Science | en |
dc.identifier.doi | 10.1093/mnras/stae812 | |
dc.description.status | Peer reviewed | en |
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