Search Results - "DENT, W. R. F"

DUST AND GAS IN THE DISK OF HL TAURI: SURFACE DENSITY, DUST SETTLING, AND DUST-TO-GAS RATIO by Pinte, C., Dent, W. R. F., Ménard, F., Hales, A., Hill, T., Cortes, P., Gregorio-Monsalvo, I. de

“…ABSTRACT The recent ALMA observations of the disk surrounding HL Tau reveal a very complex dust spatial distribution. We present a radiative transfer model…”
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A Highly Settled Disk around Oph163131 by Villenave, M., Stapelfeldt, K. R., Duchêne, G., Ménard, F., Lambrechts, M., Sierra, A., Flores, C., Dent, W. R. F., Wolff, S., Ribas, Á., Benisty, M., Cuello, N., Pinte, C.

“…Abstract High dust density in the midplane of protoplanetary disks is favorable for efficient grain growth and can allow fast formation of planetesimals and…”
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Submillimetre dust polarization and opacity in the HD163296 protoplanetary ring system by Dent, W R F, Pinte, C, Cortes, P C, Ménard, F, Hales, A, Fomalont, E, de Gregorio-Monsalvo, I

“…ABSTRACT We present ALMA images of the sub-mm continuum polarization and spectral index of the protoplanetary ringed disc HD163296. The polarization fraction…”
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Exocometary Gas in the HD 181327 Debris Ring by Marino, S., Matra, L., Stark, C., Wyatt, M. C., Casassus, S., Kennedy, G., Rodriguez, D., Zuckerman, B., Perez, S., Dent, W. R. F., Kuchner, M., Roberge, A.

“…An increasing number of observations have shown that gaseous debris discs are not an exception. However, until now, we only knew of cases around A stars. Here…”
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Detection of Rydberg Lines from the Atmosphere of Betelgeuse by Dent, W. R. F., Harper, G. M., Richards, A. M. S., Kervella, P., Matthews, L. D.

“…Abstract 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…”
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CO emission from discs around isolated HAeBe and Vega-excess stars by Dent, W. R. F., Greaves, J. S., Coulson, I. M.

“…We describe results from a survey for J = 3–2 12CO emission from visible stars classified as having an infrared excess. The line is clearly detected in 21…”
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Target selection for the SUNS and DEBRIS surveys for debris discs in the solar neighbourhood by Phillips, N. M., Greaves, J. S., Dent, W. R. F., Matthews, B. C., Holland, W. S., Wyatt, M. C., Sibthorpe, B.

“…Debris discs – analogous to the asteroid and Kuiper–Edgeworth belts in the Solar system – have so far mostly been identified and studied in thermal emission…”
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New Debris Disks around Nearby Main-Sequence Stars: Impact on the Direct Detection of Planets by Beichman, C. A, Bryden, G, Stapelfeldt, K. R, Gautier, T. N, Grogan, K, Shao, M, Velusamy, T, Lawler, S. M, Blaylock, M, Rieke, G. H, Lunine, J. I, Fischer, D. A, Marcy, G. W, Greaves, J. S, Wyatt, M. C, Holland, W. S, Dent, W. R. F

“…Using the MIPS instrument on Spitzer, we have searched for infrared excesses around a sample of 82 stars, mostly F, G, and K main-sequence field stars, along…”
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HERSCHEL PACS OBSERVATIONS AND MODELING OF DEBRIS DISKS IN THE TUCANA-HOROLOGIUM ASSOCIATION by DONALDSON, J. K, ROBERGE, A, RIVIERE-MARICHALAR, P, SANDELL, G, CHEN, C. H, AUGEREAU, J.-C, DENT, W. R. F, EIROA, C, KRIVOV, A. V, MATHEWS, G. S, MEEUS, G, MENARD, F

“…We present Herschel PACS photometry of 17 B- to M-type stars in the 30 Myr old Tucana-Horologium Association. This work is part of the Herschel Open Time Key…”
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A large-scale CO survey of the Rosette Molecular Cloud: assessing the effects of O stars on surrounding molecular gas by Dent, W. R. F., Hovey, G. J., Dewdney, P. E., Burgess, T. A., Willis, A. G., Lightfoot, J. F., Jenness, T., Leech, J., Matthews, H. E., Heyer, M., Poulton, C. J.

“…We present a new large-scale survey of the J= 3–2 12CO emission covering 4.8 deg2 around the Rosette Nebula. The results reveal the complex dynamics of the…”
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Nine Localized Deviations from Keplerian Rotation in the DSHARP Circumstellar Disks: Kinematic Evidence for Protoplanets Carving the Gaps by Pinte, C., Price, D. J., Ménard, F., Duchêne, G., Christiaens, Valentin, Andrews, S. M., Huang, J., Hill, T., van der Plas, G., Perez, L. M., Isella, A., Boehler, Y., Dent, W. R. F., Mentiplay, D., Loomis, R. A.

“…We present evidence for localized deviations from Keplerian rotation, I.e., velocity "kinks," in 8 of the 18 circumstellar disks observed by the DSHARP…”
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Has the dust clump in the debris disc of Beta Pictoris moved? by Han, Y, Wyatt, M C, Dent, W R F

“…ABSTRACT The edge-on debris disc of the nearby young star Beta Pictoris shows an unusual brightness asymmetry in the form of a clump. The clump has been…”
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Molecular Reconnaissance of the β Pictoris Gas Disk with the SMA: A Low HCN/(CO+CO2) Outgassing Ratio and Predictions for Future Surveys by Matrà, L., Wilner, D. J., Öberg, K. I., Andrews, S. M., Loomis, R. A., Wyatt, M. C., Dent, W. R. F.

“…The exocometary origin of CO gas has been confirmed in several extrasolar Kuiper belts, with CO ice abundances consistent with solar system comets. We here…”
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Molecular Gas Clumps from the Destruction of Icy Bodies in the β Pictoris Debris Disk by Dent, W. R. F., Wyatt, M. C., Roberge, A., Augereau, J.-C., Casassus, S., Corder, S., Greaves, J. S., de Gregorio-Monsalvo, I., Hales, A., Jackson, A. P., Hughes, A. Meredith, Lagrange, A.-M., Matthews, B., Wilner, D.

“…Many stars are surrounded by disks of dusty debris formed in the collisions of asteroids, comets, and dwarf planets, but is gas also released in such events?…”
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Gas and dust around A-type stars at tens of Myr: signatures of cometary breakup by Greaves, J S, Holland, W S, Matthews, B C, Marshall, J P, F Dent, W R, Woitke, P, Wyatt, M C, Matra, L, Jackson, A

“…Discs of dusty debris around main-sequence stars indicate fragmentation of orbiting planetesimals, and for a few A-type stars, a gas component is also seen…”
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The circumstellar disc around the Herbig AeBe star HD169142 by Dent, W. R. F., Torrelles, J. M., Osorio, M., Calvet, N., Anglada, G.

“…We present 7 mm and 3.5 cm wavelength continuum observations towards the Herbig AeBe star HD169142 performed with the Very Large Array (VLA) with an angular…”
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CO mass upper limits in the Fomalhaut ring – the importance of NLTE excitation in debris discs and future prospects with ALMA by Matra, L, Panic, O, Wyatt, M C, Dent, W RF

“…In recent years, gas has been observed in an increasing number of debris discs, though its nature remains to be determined. Here, we analyse CO molecular…”
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ALMA observations of the η Corvi debris disc: inward scattering of CO-rich exocomets by a chain of 3–30 M ⊕ planets? by Marino, S, Wyatt, M C, Panic, O, Matra, L, Kennedy, G M, Bonsor, A, Kral, Q, Dent, W RF, Duchene, G, Wilner, D, Lisse, C M, Lestrade, J-F, Matthews, B

“…While most of the known debris discs present cold dust at tens of astronomical unit (au), a few young systems exhibit hot dust analogous to the Zodiacal dust…”
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Exocometary gas structure, origin and physical properties around β Pictoris through ALMA CO multitransition observations by Matra, L, Dent, W RF, Wyatt, M C, Kral, Q, Wilner, D J, Panic, O, Hughes, A M, deGregorio-Monsalvo, I, Hales, A, Augereau, J-C, Greaves, J, Roberge, A

“…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…”
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LMT/AzTEC observations of Vega by Marshall, J P, Chavez-Dagostino, M, Sanchez-Arguelles, D, Matrà, L, del Burgo, C, Kemper, F, Bertone, E, Dent, W R F, Vega, O, Wilson, G, Gómez-Ruiz, A, Montaña, A

“…ABSTRACT Vega is the prototypical debris disc system. Its architecture has been extensively studied at optical to millimetre wavelengths, revealing a near…”
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