Now showing items 1-5 of 5

    • The binary fraction of planetary nebula central stars - III. the promise of VPHAS+ 

      Barker, Helen; Zijlstra, Albert; Marco, Orsola De; Frew, David J.; Drew, J. E.; Corradi, R. L. M.; Eislöffel, Jochen; Parker, Quentin A. (2018-04-21)
      The majority of planetary nebulae (PNe) are not spherical, and current single-star models cannot adequately explain all the morphologies we observe. This has led to the Binary Hypothesis, which states that PNe are ...
    • A survey for variable young stars with small telescopes – IX. Evolution of spot properties on YSOs in IC 5070 

      Herbert, Carys; Froebrich, Dirk; Vanaverbeke, Siegfried; Scholz, Aleks; Eislöffel, Jochen; Urtly, Thomas; Walton, Ivan L; Wiersema, Klaas; Quinn, Nick J; Piehler, Georg; Aimar, Mario Morales; García, Rafael Castillo; Vanmunster, Tonny; Alfaro, Francisco C Soldán; de la Cuesta, Faustino García; Licchelli, Domenico; Perez, Alex Escartin; Mañanes, Esteban Fernández; Ribes, Noelia Graciá; González, José Luis Salto; Futcher, Stephen R L; Nelson, Tim; Dvorak, Shawn; Moździerski, Dawid; Kotysz, Krzysztof; Mikołajczyk, Przemysław; Fleming, George; Phillips, Mark; Vale, Tony; Dubois, Franky; Eggenstein, Heinz-Bernd; Heald, Michael A; Lewin, Pablo; OKeeffe, Derek; Popowicz, Adam; Bernacki, Krzysztof; Malcher, Andrzej; Lasota, Slawomir; Fiolka, Jerzy; Dustor, Adam; Percy, Stephen C; Devine, Pat; Patel, Aashini L; Dickers, Matthew D; Dover, Lord; Grozdanova, Ivana I; Urquhart, James S; Lynch, Chris J R (2024-04-01)
      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. ...
    • A survey for variable young stars with small telescopes – VIII. Properties of 1687 Gaia selected members in 21 nearby clusters 

      Froebrich, Dirk; Scholz, Aleks; Campbell-White, Justyn; Vanaverbeke, Siegfried; Herbert, Carys; Eislöffel, Jochen; Urtly, Thomas; Long, Timothy P; Walton, Ivan L; Wiersema, Klaas; Quinn, Nick J; Rodda, Tony; González-Carballo, Juan-Luis; Morales Aimar, Mario; Castillo García, Rafael; Soldán Alfaro, Francisco C; García de la Cuesta, Faustino; Licchelli, Domenico; Escartin Perez, Alex; Salto González, José Luis; Deldem, Marc; Futcher, Stephen R L; Nelson, Tim; Dvorak, Shawn; Moździerski, Dawid; Kotysz, Krzysztof; Mikołajczyk, Przemysław; Fleming, George; Phillips, Mark; Vale, Tony; Öğmen, Yenal; Dubois, Franky; Rolfe, Samantha M; Campbell, David A; Eggenstein, Heinz-Bernd; Hambsch, Franz-Josef; Heald, Michael A; Lewin, Pablo; Rose, Adam C; Stone, Geoffrey; Crow, Martin Valentine; Dawes, Simon Francis; OKeeffe, Derek; Popowicz, Adam; Bernacki, Krzysztof; Malcher, Andrzej; Lasota, Slawomir; Fiolka, Jerzy; Dustor, Adam; Vajpayee, Amritanshu; Devine, Pat; Kolb, Matthias; Marquette, Jean-Baptiste; Ruppel, Gregg L; Crowson, Dan R; da Silva, Cledison Marcos; Michaud, Michel; Patel, Aashini L; Dickers, Matthew D; Dover, Lord; Grozdanova, Ivana I; Urquhart, James S; Lynch, Chris J R (2024-02-01)
      The Hunting Outbursting Young Stars (HOYS) project performs long-term, optical, multifilter, high cadence monitoring of 25 nearby young clusters and star-forming regions. Utilizing Gaia DR3 data, we have identified about ...
    • Twenty-five Years of Accretion onto the Classical T Tauri Star TW Hya 

      Herczeg, Gregory J.; Chen, Yuguang; Donati, Jean-Francois; Dupree, Andrea K.; Walter, Frederick M.; Hillenbrand, Lynne A.; Johns-Krull, Christopher M.; Manara, Carlo F.; Günther, Hans Moritz; Fang, Min; Schneider, P. Christian; Valenti, Jeff A.; Alencar, Silvia H. P.; Venuti, Laura; Alcalá, Juan Manuel; Frasca, Antonio; Arulanantham, Nicole; Linsky, Jeffrey L.; Bouvier, Jerome; Brickhouse, Nancy S.; Calvet, Nuria; Espaillat, Catherine C.; Campbell-White, Justyn; Carpenter, John M.; Chang, Seok-Jun; Cruz, Kelle L.; Dahm, S. E.; Eislöffel, Jochen; Edwards, Suzan; Fischer, William J.; Guo, Zhen; Henning, Thomas; Ji, Tao; Jose, Jessy; Kastner, Joel H.; Launhardt, Ralf; Principe, David A.; Robinson, Connor E.; Serna, Javier; Siwak, Michal; Sterzik, Michael F.; Takasao, Shinsuke (2023-10-12)
      Accretion plays a central role in the physics that governs the evolution and dispersal of protoplanetary disks. The primary goal of this paper is to analyze the stability over time of the mass accretion rate onto TW Hya, ...
    • The VST photometric hα survey of the Southern Galactic Plane and Bulge (VPHAS+) 

      Drew, J.E.; González-Solares, Eduardo A.; Greimel, Robert; Irwin, M.J.; Küpcü Yoldaş, A.; Lewis, J.R.; Barentsen, Geert; Eislöffel, Jochen; Farnhill, Hywel J.; Martin, Bill; Walton, Nicholas A.; Mohr-Smith, M.; Raddi, Roberto; Sale, Stuart E.; Wright, Nicholas J.; Groot, Paul J.; Barlow, Michael J.; Corradi, R.L.M.; Drake, Jeremy J.; Fabregat, Juan; Frew, David J.; Gänsicke, Boris T.; Knigge, Christian; Mampaso, Antonio; Morris, R.A.H.; Naylor, Tim J.; Parker, Quentin A.; Phillipps, Steven; Ruhland, Christine; Steeghs, Danny T H; Unruh, Y.C.; Vink, Jorick S.; Wesson, Roger; Zijlstra, Albert (2014-05-21)
      The VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS+) is surveying the southern Milky Way in u, g, r, i and Hα at ~1 arcsec angular resolution. Its footprint spans the Galactic latitude range -5o ...