Zobrazeno 1 - 10
of 91
pro vyhledávání: '"W. R. F. Dent"'
Publikováno v:
The Astrophysical Journal Letters, Vol 966, Iss 1, p L13 (2024)
Emission lines from Rydberg transitions are detected for the first time from a region close to the surface of Betelgeuse. The H30 α line is observed at 231.905 GHz, with an FWHM ∼42 km s ^−1 and extended wings. A second line at 232.025 GHz (FWHM
Externí odkaz:
https://doaj.org/article/53e739192a9e411091b56125df0cc484
The edge-on debris disk of the nearby young star Beta Pictoris shows an unusual brightness asymmetry in the form of a clump. The clump has been detected in both the mid-IR and CO and its origin has so far remained uncertain. Here we present new mid-I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffa22a65a84d6675ee165291cbd97414
Autor:
Á. Ribas, E. Macías, P. Weber, S. Pérez, N. Cuello, R. Dong, A. Aguayo, C. Cáceres, J. Carpenter, W. R. F. Dent, I. de Gregorio-Monsalvo, G. Duchêne, C. C. Espaillat, P. Riviere-Marichalar, M. Villenave
Publikováno v:
Astronomy & Astrophysics. 673:A77
We present ALMA multiwavelength observations of the protoplanetary disk around the nearby (d$\sim$100 pc) young solar analog MP Mus (PDS 66). These observations at 0.89 mm, 1.3 mm, and 2.2 mm have angular resolutions of $\sim$ 1", 0.05", and 0.25", r
Autor:
M. Villenave, K. R. Stapelfeldt, G. Duchêne, F. Ménard, M. Lambrechts, A. Sierra, C. Flores, W. R. F. Dent, S. Wolff, Á. Ribas, M. Benisty, N. Cuello, C. Pinte
Publikováno v:
Villenave, M, Stapelfeldt, K R, Duchêne, G, Ménard, F, Lambrechts, M, Sierra, A, Flores, C, Dent, W R F, Wolff, S, Ribas, A, Benisty, M, Cuello, N & Pinte, C 2022, ' A Highly Settled Disk around Oph163131 ', Astrophysical Journal, vol. 930, no. 1, 11 . https://doi.org/10.3847/1538-4357/ac5fae
The Astrophysical Journal
The Astrophysical Journal
High dust density in the midplane of protoplanetary disks is favorable for efficient grain growth and can allow fast formation of planetesimals and planets, before disks dissipate. Vertical settling and dust trapping in pressure maxima are two mechan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cf9f7b7c1609bbb7711a72ffe752e7c
Autor:
J P Marshall, M Chavez-Dagostino, D Sanchez-Arguelles, L Matrà, C del Burgo, F Kemper, E Bertone, W R F Dent, O Vega, G Wilson, A Gómez-Ruiz, A Montaña
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
Vega is the prototypical debris disc system. Its architecture has been extensively studied at optical to millimetre wavelengths, revealing a near face-on, broad, and smooth disc with multiple distinct components. Recent millimetre-wavelength observat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6fcb2b09277dbd27a419b150522680e
http://hdl.handle.net/10261/279889
http://hdl.handle.net/10261/279889
Autor:
J.-F. Lestrade, O. Panić, Amy Bonsor, David J. Wilner, Mark C. Wyatt, Quentin Kral, W. R. F. Dent, Sebastian Marino, Carey M. Lisse, Luca Matrà, Brenda C. Matthews, Grant M. Kennedy, Gaspard Duchene
Publikováno v:
NASA Astrophysics Data System
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 465 (3), pp.2595-2615. ⟨10.1093/mnras/stw2867⟩
Monthly Notices of the Royal Astronomical Society, 2016, 465 (3), pp.2595-2615. ⟨10.1093/mnras/stw2867⟩
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 465 (3), pp.2595-2615. ⟨10.1093/mnras/stw2867⟩
Monthly Notices of the Royal Astronomical Society, 2016, 465 (3), pp.2595-2615. ⟨10.1093/mnras/stw2867⟩
While most of the known debris discs present cold dust at tens of AU, a few young systems exhibit hot dust analogous to the Zodiacal dust. $\eta$ Corvi is particularly interesting as it is old and it has both, with its hot dust significantly exceedin
Autor:
Aki Roberge, Mark C. Wyatt, O. Panić, David J. Wilner, A. M. Hughes, Quentin Kral, W. R. F. Dent, J. C. Augereau, Luca Matrà, Antonio Hales, I. de Gregorio-Monsalvo, Jane Greaves
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 464:1415-1433
Recent ALMA observations unveiled the structure of CO gas in the 23 Myr-old $\beta$ Pictoris planetary system, a component that has been discovered in many similarly young debris disks. We here present ALMA CO J=2-1 observations, at an improved spect
Autor:
Jane Greaves, Alan Jackson, Wayne S. Holland, Jonathan P. Marshall, Luca Matrà, Brenda C. Matthews, W. R. F. Dent, Mark C. Wyatt, Peter Woitke
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 461:3910-3917
Discs of dusty debris around main-sequence star indicate fragmentation of orbiting planetesimals, and for a few A-type stars, a gas component is also seen that may come from collisionally-released volatiles. Here we find the sixth example of a CO-hos
Autor:
F. Cruz-Saenz de Miera, G. W. Wilson, Susana Lizano, Jorge A. Zavala, Alfredo Montaña, M. Chavez-Dagostino, Jonathan P. Marshall, David Sánchez-Arguelles, Iván Rodríguez-Montoya, Olga Vega, Carlos Eiroa, Min S. Yun, Emanuele Bertone, W. R. F. Dent, Grant M. Kennedy, F. P. Schloerb, Arturo I. Gómez-Ruiz, Milagros Zeballos, Jane Greaves, R. López-Valdivia, M. Olmedo, David H. Hughes, V. De la Luz, Eric E. Mamajek
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 462:2285-2294
ǫ Eridani is a nearby, young Sun-like star that hosts a ring of cool debris analogous\ud to the solar system’s Edgeworth-Kuiper belt. Early observations at (sub-)mm wave-\ud lengths gave tentative evidence of the presence of inhomogeneities in the
Autor:
Laura M. Pérez, Andrea Isella, Sean M. Andrews, G. van der Plas, Y. Boehler, W. R. F. Dent, Francois Menard, Gaspard Duchêne, Daniel Mentiplay, J.-S. Huang, Ryan A. Loomis, Valentin Christiaens, Christophe Pinte, Daniel J. Price, Tracey Hill
Publikováno v:
The Astrophysical Journal. 890:L9
We present evidence for localised deviations from Keplerian rotation, i.e., velocity "kinks", in 8 of 18 circumstellar disks observed by the DSHARP program: DoAr 25, Elias 2-27, GW Lup, HD 143006, HD 163296, IM Lup, Sz 129 and WaOph 6. Most of the ki