Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Nicole Arulanantham"'
Autor:
Nicole Arulanantham, M. K. McClure, Klaus Pontoppidan, Tracy L. Beck, J. A. Sturm, D. Harsono, A. C. A. Boogert, M. Cordiner, E. Dartois, M. N. Drozdovskaya, C. Espaillat, G. J. Melnick, J. A. Noble, M. E. Palumbo, Y. J. Pendleton, H. Terada, E. F. van Dishoeck
Publikováno v:
The Astrophysical Journal Letters, Vol 965, Iss 1, p L13 (2024)
We present JWST MIRI MRS observations of the edge-on protoplanetary disk around the young subsolar-mass star Tau 042021, acquired as part of the Cycle 1 GO program “Mapping Inclined Disk Astrochemical Signatures.” These data resolve the mid-IR sp
Externí odkaz:
https://doaj.org/article/f4ec7ae4bee24dbda012da4d2ca58adb
Autor:
María José Colmenares, Edwin A. Bergin, Colette Salyk, Klaus M. Pontoppidan, Nicole Arulanantham, Jenny Calahan, Andrea Banzatti, Sean Andrews, Geoffrey A. Blake, Fred Ciesla, Joel Green, Feng Long, Michiel Lambrechts, Joan Najita, Ilaria Pascucci, Paola Pinilla, Sebastiaan Krijt, Leon Trapman, the JDISCS Collaboration
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 173 (2024)
It has been proposed, and confirmed by multiple observations, that disks around low-mass stars display a molecule-rich emission and carbon-rich disk chemistry as compared to their hotter, more massive solar counterparts. In this work, we present JWST
Externí odkaz:
https://doaj.org/article/8fb525844d664a65854afb21adbdb06a
Autor:
R. O. Parke Loyd, P. C. Schneider, James A. G. Jackman, Kevin France, Evgenya L. Shkolnik, Nicole Arulanantham, P. Wilson Cauley, Joe Llama, Adam C. Schneider
Publikováno v:
The Astronomical Journal, Vol 167, Iss 4, p 185 (2024)
Externí odkaz:
https://doaj.org/article/31bb0bd4f5174c9d9e41441bb66324a6
Autor:
Klaus M. Pontoppidan, Colette Salyk, Andrea Banzatti, Ke Zhang, Ilaria Pascucci, Karin I. Öberg, Feng Long, Carlos E. Romero-Mirza, John Carr, Joan Najita, Geoffrey A. Blake, Nicole Arulanantham, Sean Andrews, Nicholas P. Ballering, Edwin Bergin, Jenny Calahan, Douglas Cobb, Maria Jose Colmenares, Annie Dickson-Vandervelde, Anna Dignan, Joel Green, Phoebe Heretz, Gregory Herczeg, Anusha Kalyaan, Sebastiaan Krijt, Tyler Pauly, Paola Pinilla, Leon Trapman, Chengyan Xie
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 158 (2024)
The JWST Disk Infrared Spectral Chemistry Survey (JDISCS) aims to understand the evolution of the chemistry of inner protoplanetary disks using the Mid-InfraRed Instrument (MIRI) on the James Webb Space Telescope (JWST). With a growing sample of >30
Externí odkaz:
https://doaj.org/article/9fce91bfb7f74aada1b295364f3e3013
Autor:
Carlos E. Romero-Mirza, Andrea Banzatti, Karin I. Öberg, Klaus M. Pontoppidan, Colette Salyk, Joan Najita, Geoffrey A. Blake, Sebastiaan Krijt, Nicole Arulanantham, Paola Pinilla, Feng Long, Giovanni Rosotti, Sean M. Andrews, David J. Wilner, Jenny Calahan, The JDISCS Collaboration
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 78 (2024)
The mid-infrared water vapor emission spectrum provides a novel way to characterize the delivery of icy pebbles toward the innermost (
Externí odkaz:
https://doaj.org/article/6e17cdce4f894f64be3361bbf2822b67
Autor:
Thanawuth Thanathibodee, Connor E. Robinson, Nuria Calvet, Catherine C. Espaillat, Caeley V. Pittman, Nicole Arulanantham, Kevin France, Hans Moritz Günther, Seok-Jun Chang, P. Christian Schneider
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 193 (2024)
The C iv doublet in the UV has long been associated with accretion in T Tauri stars. However, it is still unclear where and how the lines are formed. Here, we present a new C iv line model based on the currently available accretion shock and accretio
Externí odkaz:
https://doaj.org/article/88a4783572b64a5d957f6cbc862608ea
Autor:
Chengyan Xie, Ilaria Pascucci, Feng Long, Klaus M. Pontoppidan, Andrea Banzatti, Anusha Kalyaan, Colette Salyk, Yao Liu, Joan R. Najita, Paola Pinilla, Nicole Arulanantham, Gregory J. Herczeg, John Carr, Edwin A. Bergin, Nicholas P. Ballering, Sebastiaan Krijt, Geoffrey A. Blake, Ke Zhang, Karin I. Öberg, Joel D. Green, the JDISCS collaboration
Publikováno v:
The Astrophysical Journal Letters, Vol 959, Iss 2, p L25 (2023)
We present an analysis of the JDISCS JWST/MIRI-MRS spectrum of Sz 114, an accreting M5 star surrounded by a large dust disk with a shallow gap at ∼39 au. The spectrum is molecule-rich; we report the detection of water, CO, CO _2 , HCN, C _2 H _2 ,
Externí odkaz:
https://doaj.org/article/eec4a68c8b8244d8a00e7ea02fbf42c7
Autor:
Kevin France, Nicole Arulanantham, Erin Maloney, P. Wilson Cauley, P. Ábrahám, Juan M. Alcalá, Justyn Campbell-White, Eleonora Fiorellino, Gregory J. Herczeg, Brunella Nisini, Miguel Vioque
Publikováno v:
The Astronomical Journal, Vol 166, Iss 2, p 67 (2023)
The spatial distribution and evolution of gas in the inner 10 au of protoplanetary disks form the basis for estimating the initial conditions of planet formation. Among the most important constraints derived from spectroscopic observations of the inn
Externí odkaz:
https://doaj.org/article/b88795ae9fdf40e49a32e6c0d98de62a
Autor:
R. O. Parke Loyd, P. C. Schneider, James A. G. Jackman, Kevin France, Evgenya L. Shkolnik, Nicole Arulanantham, P. Wilson Cauley, Joe Llama, Adam C. Schneider
Publikováno v:
The Astronomical Journal, Vol 165, Iss 4, p 146 (2023)
Variability in the far-ultraviolet (FUV) emission produced by stellar activity affects photochemistry and heating in orbiting planetary atmospheres. We present a comprehensive analysis of the FUV variability of GJ 436, a field-age M2.5V star ( P _rot
Externí odkaz:
https://doaj.org/article/606a6a20b5e8488982abafe793e3a6e6
Autor:
Nicole Arulanantham, Max Gronke, Eleonora Fiorellino, Jorge Filipe Gameiro, Antonio Frasca, Joel Green, Seok-Jun Chang, Rik A. B. Claes, Catherine C. Espaillat, Kevin France, Gregory J. Herczeg, Carlo F. Manara, Laura Venuti, Péter Ábrahám, Richard Alexander, Jerome Bouvier, Justyn Campbell-White, Jochen Eislöffel, William J. Fischer, Ágnes Kóspál, Miguel Vioque
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 2, p 185 (2023)
T Tauri stars produce broad Ly α emission lines that contribute ∼88% of the total UV flux incident on the inner circumstellar disks. Ly α photons are generated at the accretion shocks and in the protostellar chromospheres and must travel through
Externí odkaz:
https://doaj.org/article/63588fca76104adeacd7a57defb07da5