Reference : Albedo and atmospheric constraints of dwarf planet Makemake from a stellar occultation
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/142198
Albedo and atmospheric constraints of dwarf planet Makemake from a stellar occultation
English
Ortiz, J. L. [> >]
Sicardy, B. [LESIA-Observatoire de Paris, CNRS, UPMC Univ. Paris 6, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Cedex, France; Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 5, France]
Braga-Ribas, F. [LESIA-Observatoire de Paris, CNRS, UPMC Univ. Paris 6, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Cedex, France; Observatório Nacional/MCTI, Rua General José Cristino 77, CEP20921-400 Rio de Janeiro, Brazil]
Alvarez-Candal, A. [European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago 19, Chile; Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, 18080 Granada, Spain]
Lellouch, E. [LESIA-Observatoire de Paris, CNRS, UPMC Univ. Paris 6, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Cedex, France]
Duffard, R. [Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, 18080 Granada, Spain]
Pinilla-Alonso, N. [Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, 18080 Granada, Spain; SETI Institute, 189 Bernardo Ave., Mountain View, California 94043, USA]
Ivanov, V. D. [European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago 19, Chile]
Littlefair, S. P. [Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK]
Camargo, J. I. B. [Observatório Nacional/MCTI, Rua General José Cristino 77, CEP20921-400 Rio de Janeiro, Brazil]
Assafin, M. [Observatório do Valongo, Universidade Federal do Rio de Janeiro, Ladeira Pedro Antonio 43, CEP 20.080-090 Rio de Janeiro, Brazil]
Unda-Sanzana, E. [Unidad de Astronomía, Facultad de Ciencias Básicas, Universidad de Antofagasta, Avenida Angamos 601, Antofagasta, Chile]
Jehin, Emmanuel [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Morales, N. [Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, 18080 Granada, Spain]
Tancredi, G. [Observatorio Astronómico Los Molinos DICYT-MEC Cno. de los Molinos 5769, 12400 Montevideo, Uruguay]
Gil-Hutton, R. [Complejo Astronómico El Leoncito (CASLEO) and San Juan National University, Avenida España 1512 sur, J5402DSP, San Juan, Argentina]
de La Cueva, I. [Astroimagen, Abad y Sierra 58Bis, 07800 Ibiza, Spain]
Colque, J. P. [Unidad de Astronomía, Facultad de Ciencias Básicas, Universidad de Antofagasta, Avenida Angamos 601, Antofagasta, Chile]
da Silva Neto, D. N. [Observatório Nacional/MCTI, Rua General José Cristino 77, CEP20921-400 Rio de Janeiro, Brazil]
Manfroid, Jean [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Thirouin, A. [Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, 18080 Granada, Spain]
Gutiérrez, P. J. [Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, 18080 Granada, Spain]
Lecacheux, J. [LESIA-Observatoire de Paris, CNRS, UPMC Univ. Paris 6, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Cedex, France]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Maury, A. [San Pedro de Atacama Celestial Explorations, Casilla 21, San Pedro de Atacama, Chile]
Colas, F. [IMCCE, Observatoire de Paris, UPMC, Univ. Lille 1, CNRS, 77 Av. Denfert-Rochereau, 75014 Paris, France]
Licandro, J. [Instituto de Astrofísica de Canarias, Vía Láctea s/n 38250 La Laguna, Tenerife, Spain]
Mueller, T. [Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstraße, 85748 Garching, Germany]
Jacques, C. [Observatório CEAMIG-REA, Rua Radialista Joao Sposito 183, Belo Horizonte, Minas Gerais, CEP31545-120, Brazil]
Weaver, D. [Observatório Astronômico Christus, Universidade de Fortaleza. Rua João Carvalho, 630, Aldeota, Fortaleza, Brazil]
Milone, A. [Instituto Nacional de Pesquisas Espaciais/MCTI, Divisão de Astrofisica, Av. dos Astronautas 1758, São José dos Campos-SP, 12227-010, Brazil]
Salvo, R. [Observatorio Astronómico Los Molinos DICYT-MEC Cno. de los Molinos 5769, 12400 Montevideo, Uruguay]
Bruzzone, S. [Observatorio Astronómico Los Molinos DICYT-MEC Cno. de los Molinos 5769, 12400 Montevideo, Uruguay]
Organero, F. [Observatorio astronómico de La Hita, 45840 La Puebla de Almoradiel, Toledo, Spain]
Behrend, R. [Observatoire de Genève, CH-1290 Sauverny, Switzerland]
Roland, S. [Observatorio Astronómico Los Molinos DICYT-MEC Cno. de los Molinos 5769, 12400 Montevideo, Uruguay]
Vieira-Martins, R. [Observatório do Valongo, Universidade Federal do Rio de Janeiro, Ladeira Pedro Antonio 43, CEP 20.080-090 Rio de Janeiro, Brazil; Observatório Nacional/MCTI, Rua General José Cristino 77, CEP20921-400 Rio de Janeiro, Brazil]
Widemann, T. [LESIA-Observatoire de Paris, CNRS, UPMC Univ. Paris 6, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Cedex, France]
Roques, F. [LESIA-Observatoire de Paris, CNRS, UPMC Univ. Paris 6, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Cedex, France]
Santos-Sanz, P. [Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, 18080 Granada, Spain; LESIA-Observatoire de Paris, CNRS, UPMC Univ. Paris 6, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Cedex, France]
Hestroffer, D. [IMCCE, Observatoire de Paris, UPMC, Univ. Lille 1, CNRS, 77 Av. Denfert-Rochereau, 75014 Paris, France]
Dhillon, V. S. [Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK]
Marsh, T. R. [Department of Physics, University of Warwick, Coventry CV4 7AL, UK]
Harlingten, C. [Caisey Harlingten Observatory, The Grange, Scarrow Beck Road, Erpingham, Norfolk NR11 7QX, UK]
Bagatin, A. Campo [Departamento de Física, Ingeniería de Sistemas y teoría de la Señal and Instituto de Física Aplicada a las Ciencias y la Tecnología, Universidad de Alicante P.O. Box 99, 03080 Alicante, Spain]
Alonso, M. L. [Instituut voor Sterrenkunde, K. U. Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium]
Ortiz, M. [Pontificia Universidad Católica de Chile Vicuna Mackenna 4860 7820436 Macul, Santiago, Chile]
Colazo, C. [Observatorio Astronomico el Gato Gris, S. Luis 145, Tanti, Córdoba, Argentina]
Lima, H. J. F. [IP&D, Universidade do Vale do Paraíba, Av. Shishima Hifumi, 2911, CEP 12244-000, São José dos Campos, Brazil]
Oliveira, A. S. [IP&D, Universidade do Vale do Paraíba, Av. Shishima Hifumi, 2911, CEP 12244-000, São José dos Campos, Brazil]
Kerber, L. O. [Laboratório de Astrofísica Teórica e Observacional, Departamento de Ciências Exatas e Tecnológicas, Universidade Estadual de Santa Cruz, 45662-00 Rodovia Ilhéus-Itabuna, km 16, Brazil]
Smiljanic, R. [European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany]
Pimentel, E. [Observatório CEAMIG-REA, Rua Radialista Joao Sposito 183, Belo Horizonte, Minas Gerais, CEP31545-120, Brazil]
Giacchini, B. [Observatório CEAMIG-REA, Rua Radialista Joao Sposito 183, Belo Horizonte, Minas Gerais, CEP31545-120, Brazil]
Cacella, P. [Rede de Astronomia Observacional, Brasilia, SMPW Q25 CJ1-10B, 71745-501, Brazil]
Emilio, M. [Universidade Estadual de Ponta Grossa, O.A. -- DEGEO, Avenida Carlos Cavalcanti 4748, Ponta Grossa 84030-900, Brazil)]
1-Nov-2012
Nature
Nature Publishing Group
491
566-569
Yes (verified by ORBi)
International
0028-0836
1476-4687
Basingstoke
United Kingdom
[en] Pluto and Eris are icy dwarf planets with nearly identical sizes, comparable densities and similar surface compositions as revealed by spectroscopic studies. Pluto possesses an atmosphere whereas Eris does not; the difference probably arises from their differing distances from the Sun, and explains their different albedos. Makemake is another icy dwarf planet with a spectrum similar to Eris and Pluto, and is currently at a distance to the Sun intermediate between the two. Although Makemake's size (1,420+/-60km) and albedo are roughly known, there has been no constraint on its density and there were expectations that it could have a Pluto-like atmosphere. Here we report the results from a stellar occultation by Makemake on 2011 April 23. Our preferred solution that fits the occultation chords corresponds to a body with projected axes of 1,430+/-9km (1σ) and 1,502+/-45km, implying a V-band geometric albedo p[SUB]V[/SUB] = 0.77+/-0.03. This albedo is larger than that of Pluto, but smaller than that of Eris. The disappearances and reappearances of the star were abrupt, showing that Makemake has no global Pluto-like atmosphere at an upper limit of 4-12nanobar (1σ) for the surface pressure, although a localized atmosphere is possible. A density of 1.7+/-0.3gcm[SUP]-3[/SUP] is inferred from the data.
http://hdl.handle.net/2268/142198
10.1038/nature11597
http://adsabs.harvard.edu/abs/2012Natur.491..566O

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