Publications
Constraints on the structure and seasonal variations of Triton’s atmosphere from the 5 October 2017 stellar occultation and previous observations
J. Marques Oliveira1 , B. Sicardy1 , A. R. Gomes-Júnior2, 3 , J. L. Ortiz4 , D. F. Strobel5 , T. Bertrand1, 6 , F. Forget7 , E. Lellouch1 , J. Desmars8, 9 , D. Bérard1 , A. Doressoundiram1 , J. Lecacheux1 , R. Leiva10, 11, E. Meza12, 13, F. Roques1 , D. Souami1, 14, T. Widemann1 , P. Santos-Sanz4 , N. Morales4 , R. Duffard4 , E. Fernández-Valenzuela15, 4 , A. J. Castro-Tirado4 , F. Braga-Ribas16, 1, 17, 3 , B. E. Morgado17, 1, 3 , M. Assafin18, 3 , J. I. B. Camargo17, 3 , R. Vieira-Martins17, 3, 9 , G. Benedetti-Rossi1, 3, 2 , S. Santos-Filho18, 3 , M. V. Banda-Huarca17, 3 , F. Quispe-Huaynasi17 , C. L. Pereira17, 3 , F. L. Rommel17, 3 , G. Margoti16, A. Dias-Oliveira19, F. Colas9 , J. Berthier9 , S. Renner9, 20 , R. Hueso21, S. Pérez-Hoyos21, A. Sánchez-Lavega21, J. F. Rojas21, W. Beisker22, 23, M. Kretlow4, 22, 23, D. Herald24, 25 , D. Gault24, K.-L. Bath22, 23, H.-J. Bode22, 23,?, E. Bredner23, 26, 27, 28, K. Guhl29, 23, T. V. Haymes30, 23, E. Hummel23 , B. Kattentidt23, O. Klös23, A. Pratt23, 30, B. Thome23, C. Avdellidou31, K. Gazeas32, E. Karampotsiou32 , L. Tzouganatos32, E. Kardasis33, A. A. Christou34, E. M. Xilouris35, I. Alikakos35, A. Gourzelas35, A. Liakos35 , V. Charmandaris36, 37, M. Jelínek38, J. Štrobl38, A. Eberle39, K. Rapp39, B. Gährken40, B. Klemt41, S. Kowollik42 , R. Bitzer42, M. Miller43, G. Herzogenrath43, D. Frangenberg43, L. Brandis43, I. Pütz43, V. Perdelwitz44, 45 , G. M. Piehler46, P. Riepe26, 47, K. von Poschinger48, P. Baruffetti49, D. Cenadelli50, J.-M. Christille50, F. Ciabattari51 , R. Di Luca52, D. Alboresi52, G. Leto53, R. Zanmar Sanchez53, P. Bruno53, G. Occhipinti53, L. Morrone54 , L. Cupolino55, A. Noschese56, A. Vecchione56, C. Scalia57, 58, 53, R. Lo Savio57, G. Giardina57, S. Kamoun59 , R. Barbosa60, R. Behrend61, M. Spano62, E. Bouchet63, M. Cottier63, L. Falco64, S. Gallego65, L. Tortorelli66 , S. Sposetti67, J. Sussenbach68, F. Van Den Abbeel69, P. André70, M. Llibre70, F. Pailler70, J. Ardissone71, M. Boutet72 , J. Sanchez72, M. Bretton73, A. Cailleau74, V. Pic74, L. Granier74, R. Chauvet75, M. Conjat76, J. L. Dauvergne77 , O. Dechambre78, P. Delay79, 80, M. Delcroix81, L. Rousselot81, J. Ferreira82, 10, P. Machado82, P. Tanga10, J.-P. Rivet10 , E. Frappa83, M. Irzyk84, F. Jabet85, M. Kaschinski86, A. Klotz87, Y. Rieugnie88, A. N. Klotz89, 90, O. Labrevoir91 , D. Lavandier92, D. Walliang92, A. Leroy93, S. Bouley94, S. Lisciandra95, ?, J.-F. Coliac95, 96, F. Metz97, D. Erpelding97 , P. Nougayrède97, T. Midavaine27, M. Miniou98, S. Moindrot99, P. Morel100, 101, B. Reginato102, E. Reginato103, 104 , J. Rudelle105, B. Tregon106, R. Tanguy107, J. David107, W. Thuillot9 , D. Hestroffer9 , G. Vaudescal108, D. Baba Aissa109 , Z. Grigahcene109, D. Briggs110, 30, S. Broadbent110, 30, 111, P. Denyer30, N. J. Haigh30, N. Quinn30, G. Thurston30, 112 , S. J. Fossey113, C. Arena113, M. Jennings114, J. Talbot115, S. Alonso116, A. Román Reche117, V. Casanova4 , E. Briggs118, R. Iglesias-Marzoa119, 120, J. Abril Ibáñez119, M. C. Díaz Martín119, H. González121, J. L. Maestre García122, J. Marchant123, I. Ordonez-Etxeberria124, P. Martorell124, J. Salamero124, F. Organero125, L. Ana125 , F. Fonseca125, V. Peris126, O. Brevia126, A. Selva127, C. Perello127, V. Cabedo128, 129, R. Gonçalves130, M. Ferreira131 , F. Marques Dias132, A. Daassou133, 134, K. Barkaoui134, 135, Z. Benkhaldoun134, M. Guennoun136, J. Chouqar134 , E. Jehin137, C. Rinner138, J. Lloyd139, M. El Moutamid140, C. Lamarche141, J. T. Pollock142, D. B. Caton142 , V. Kouprianov143, 144, B. W. Timerson25, ?, G. Blanchard145, B. Payet146, A. Peyrot146, J.-P. Teng-Chuen-Yu146 , J. Françoise147, B. Mondon147, T. Payet147, C. Boissel148, M. Castets149, W. B. Hubbard150, R. Hill150 , H. J. Reitsema151, O. Mousis152, L. Ball153, G. Neilsen153, S. Hutcheon153, K. Lay153, ?, P. Anderson153, M. Moy153, ?, M. Jonsen154, I. Pink154, R. Walters154, ?, and B. Downs155
A survey for variable young stars with small telescopes: IV -- Rotation Periods of YSOs in IC5070
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 Moździerski, Krzysztof Kotysz, Katarzyna Kowalska, Przemysław 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
A survey for variable young stars with small telescopes: II – mapping a protoplanetary disc with stable structures at 0.15 au
Jack J. Evitts,1 Dirk Froebrich, Aleks Scholz, Jochen Eisloffel, Justyn Campbell-White , Will Furnell, Bringfried Stecklum, Thomas Urtly, Roger Pickard, Klaas Wiersema, Pavol A. Dubovsky, Igor Kudzej, Ramon Naves, Mario Morales Aimar, Rafael Castillo Garc´ıa, Tonny Vanmunster, Erik Schwendeman, Francisco C. Soldan Alfaro, Stephen Johnstone, Rafael Gonzalez Farfan, Thomas Killestein, Jesus DelgadoCasal, Faustino Garc´ıa de la Cuesta, Dean Roberts, Ulrich Kolb, Lu´ıs Montoro, Domenico Licchelli, Alex Escartin Perez, Carlos Perello Perez, Marc Deldem, Stephen R.L. Futcher, Tim Nelson, Shawn Dvorak, Dawid Mozdzierski, Nick Quinn, Krzysztof Kotysz, Katarzyna Kowalska, Przemysław Mikołajczyk, George Fleming, Mark Phillips, Tony Vale, Franky Dubois, Ludwig Logie, Steve Rau, Siegfried Vanaverbeke, Barry Merrikin, Esteban Fernandez Ma ´ nanes, Emery Erdelyi, Juan-Luis Gonzalez Carballo, Fernando Limon Martinez, Timothy P. Long, Adolfo San Segundo Delgado, Josep Luis Salto Gonz ´ alez, Luis Tremosa Espasa, Georg Piehler, James Crumpton, Samuel J. Billington, Emma D’Arcy, Sally V. Makin and Lord Dover
A survey for variable young stars with small telescopes: First results from HOYS-CAPS
D. Froebrich , J. Campbell-White , A. Scholz , J. Eislöffel , T. Zegmott †, S.J. Billington †, J. Donohoe †, S.V. Makin †, R. Hibbert †, R.J. Newport, R. Pickard, N. Quinn, T. Rodda, G. Piehler, M. Shelley, S. Parkinson, K. Wiersema, I. Walton, MNRAS: MN-18-0045-MJ.R2, Accepted 2018 April 22. Received 2018 April 11; in original form 2018 January 05
Photometric Monitoring of nearby young Clusters as a Citizen Science Project(*)
Dirk Froebrich, S.V.Makin, J. Campbell-White, J. Donohoe R. Pickard, N. Quinn, T. Rodda, S. Parkinson, M. Shelley, I. Walton, G.Piehler
Poster at Star Formation 2016 Conference in Exeter, 24.08.2016
The relative importance of optical and chemical pumping of cometary OH
Piehler, G. & Kegel, W. H., Astronomy and Astrophysics 155, L13-L16 (1986)
Optical pumping of circumstellar SiO masers.
Rausch, E., Kegel, W. H., Tsuji, T., & Piehler, G., Astronomy and Astrophysics 315, 533-541 (1996)
Interpretation of CO lines from turbulent molecular clouds
G. Piehler und W. H. Kegel, Lecture Notes in Physics 459, 152-153 (1995)
The formation of molecular lines in turbulent clouds
W.H. Kegel, G. Piehler and M.A. Albrecht, Lecture Notes in Physics 459, 86-89 (1995)
The formation of interstellar molecular lines in a turbulent velocit field with finite correlation length III - Spherical clouds in hydrostatic equilibrium
W.H. Kegel and G. Piehler, Astronomy and Astrophysics 297, 841-853 (1995)
The formation of interstellar molecular lines in a turbulent velocit field with finite correlation length II - The case sigma much greater than v-therm
W.H. Kegel,G. Piehler and M.A. Albrecht, Astronomy and Astrophysics 270, 407-415 (1993)
Zur Bildung von interstellaren Moleküllinien in turbulenten inhomogenen Molekülwolken bei Abweichungen vom lokalen thermodynamischen Gleichgewicht
G. Piehler, PHD Theses (1992)
Line formation in inhomogeneous spherical molecular clouds with a turbulent velocity field accounting for a finite correlation length.
Piehler, G. & Kegel, W. H., Astronomische Gesellschaft Abstract Series 7, 89 (1992)
Optical pumping of circumstellar CO masers
G. Piehler, W.H. Kegel and T.Tsuji , Astronomy and Astrophysics 245, 580-586 (1991)
The relative importance of collisonal and chemical pumping and radiative transfer effects in cosmic OH sources
G. Piehler and W.H. Kegel, Astronomy and Astrophysics 214, 339-346 (1989)
Analytic approximations of the temperature dependence of the collisional rate coefficients for H2O and H2CO
Piehler, G., Kegel, W. H., Varshalovich, D. A., & Khersonskii, V. K., Astronomy and Astrophysics Supplement Series 76, 195-204 (1988)
Papers with no coauthorship, but aknowledgements:
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. Sicilia-Aguilar , A. Oprandi , D. Froebrich , M. Fang , J. L. Prieto , K. Stanek , A. Scholz , C.S. Kochanek , Th. Henning, R. Gredel, T.W.- S. Holoien, M. Rabus, B. J. Shappee, S. J. Billington , J. Campbell-White , and T. J. Zegmott, Astronomy and Astrophysics 607 (2017)