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Articles by Jan Cami
A solar C/O ratio in planet-forming gas at 1 au in a highly irradiated disk - Nature Astronomy
Abstract The chemical composition of exoplanets is thought to be influenced by the composition of the disks in which they form. JWST observations have unveiled a variety of chemical species in numerous nearby disks, which show substantial variations in the C/O abundance ratio.
Formation of the Methyl Cation by Photochemistry in a Protoplanetary Disk - Nature
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Abstract Forty years ago it was proposed that gas phase organic chemistry in the interstellar medium can be initiated by the methyl cation CH3+ (1–3), but hitherto it has not been observed outside the Solar System (4, 5). Alternative routes involving processes on grain surfaces have been invoked (6, 7). Here we report JWST observations of {{\rm{CH}}}_{3}^{+} in a protoplanetary disk in the Orion star forming region. We find that gas-phase organic chemistry is activated by UV irradiation.
By Olivier Berné, Marie-Aline Martin-Drumel, Ugo Jacovella, Emmanuel Dartois, Laurent Coudert, Edwin A. Bergin, Jan Cami, John Black, Oskar Asvany, Els A. Peeters, Christine Joblin, Stephan Schlemmer, José Cernicharo, Asunción Fuente, Yoko Okada, Takashi Onaka, Benoît Tabone, Ilane Schroetter, Javier R. Goicoechea, Brenger Gans, Evelyne Roueff, Amelie Canin, Boris Trahin, Jeronimo Bernard-Salas, Christiaan Boersma, Sara Cuadrado, Daniel Dicken, Meriem Elyajouri, Romane Le Gal, Marc W. Pound, Markus Röllig, Bethany Schefter, Sílvia Vicente
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Nature
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The messy death of a multiple star system and the resulting planetary nebula as observed by JWST - Nature Astronomy
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Abstract Planetary nebulae—the ejected envelopes of red giant stars—provide us with a history of the last, mass-losing phases of 90% of stars initially more massive than the Sun. Here we analyse images of the planetary nebula NGC 3132 from the James Webb Space Telescope (JWST) Early Release Observations. A structured, extended hydrogen halo surrounding an ionized central bubble is imprinted with spiral structures, probably shaped by a low-mass companion orbiting the central star at about 40–60 au.
By Orsola De Marco, Javier Lillo Alcolea Verified, Eric G. Blackman, Jesse Bublitz, Jan Cami, D. A. García-Hernández, Martin Guerrero, David Jones, Sun Kwok, Arturo Manchado, Mikako Matsuura, Quentin A Parker, Els A. Peeters, Matt Redman, Ashley J. Ruiter, Carmen Contreras Verified, Angela Speck, Hans Van Winckel, Eva Villaver, Jeremy Walsh, Muhammad Akashi, Stavros Akras, Isabel Aleman, Philippe Amram, Elvire De Beck, Panos Boumis, Nicholas Chornay, You-Hua Chu, Jorge García-Rojas, Joel H. Kastner, Foteini Lykou, Brent Miszalski, Shazrene S. Mohamed, Ana Monreal-Ibero, Hektor Monteiro, Christophe Morisset, Jason Nordhaus, Zara Osborn, Masaaki Otsuka, Bruno C. Quint, Guillermo Quintana-Lacaci, Laurence Sabin, Miguel Santander-García, Ivo Seitenzahl, Noam Soker, Letizia Stanghellini, Wolfgang Steffen, Jesús A. Toalá, Toshiya Ueta, Wouter Vlemmings, Roger Wesson
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Nature
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Transcending space and time
October 10, 2019 By Jan Cami Read. Watch. Listen. introduces you to the personal side of our faculty, staff and alumni. Participants are asked to answer three simple questions about their reading, viewing and listening habits – what one book or newspaper/magazine article is grabbing your attention; what one movie or television show has caught your eye; and what album/song, podcast or radio show are you lending an ear to.
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