Search Results - "Ansdell, M."

ALMA Survey of Lupus Protoplanetary Disks. II. Gas Disk Radii by Ansdell, M., Williams, J. P., Trapman, L., Terwisga, S. E. van, Facchini, S., Manara, C. F., Marel, N. van der, Miotello, A., Tazzari, M., Hogerheijde, M., Guidi, G., Testi, L., Dishoeck, E. F. van

“…We present Atacama Large Millimeter/Sub-Millimeter Array (ALMA) Band 6 observations of a complete sample of protoplanetary disks in the young (∼1-3 Myr) Lupus…”
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ALMA SURVEY OF LUPUS PROTOPLANETARY DISKS. I. DUST AND GAS MASSES by Ansdell, M., Williams, J. P., Marel, N. van der, Carpenter, J. M., Guidi, G., Hogerheijde, M., Mathews, G. S., Manara, C. F., Miotello, A., Natta, A., Oliveira, I., Tazzari, M., Testi, L., van Dishoeck, E. F., van Terwisga, S. E.

“…ABSTRACT We present the first high-resolution sub-millimeter survey of both dust and gas for a large population of protoplanetary disks. Characterizing…”
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YOUNG "DIPPER" STARS IN UPPER SCO AND OPH OBSERVED BY K2 by Ansdell, M., Gaidos, E., Rappaport, S. A., Jacobs, T. L., LaCourse, D. M., Jek, K. J., Mann, A. W., Wyatt, M. C., Kennedy, G., Williams, J. P., Boyajian, T. S.

“…ABSTRACT We present ten young ( 10 Myr) late-K and M dwarf stars observed in K2 Campaign 2 that host protoplanetary disks and exhibit quasi-periodic or…”
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Monitoring of the D doublet of neutral sodium during transits of two ‘evaporating’ planets by Gaidos, E, Hirano, T, Ansdell, M

“…ABSTRACT Spectroscopic transit detection of constituents in winds from ‘evaporating’ planets on close-in transiting orbits could provide desperately needed…”
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Trumpeting M dwarfs with CONCH-SHELL: a catalogue of nearby cool host-stars for habitable exoplanets and life by Gaidos, E., Mann, A. W., Lépine, S., Buccino, A., James, D., Ansdell, M., Petrucci, R., Mauas, P., Hilton, E. J.

“…We present an all-sky catalogue of 2970 nearby (d ≲ 50 pc), bright (J < 9) M- or late K-type dwarf stars, 86 per cent of which have been confirmed by…”
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New Insights into the Nature of Transition Disks from a Complete Disk Survey of the Lupus Star-forming Region by Marel, Nienke van der, Williams, Jonathan P., Ansdell, M., Manara, Carlo F., Miotello, Anna, Tazzari, Marco, Testi, Leonardo, Hogerheijde, Michiel, Bruderer, Simon, Terwisga, Sierk E. van, Dishoeck, Ewine F. van

“…Transition disks with large dust cavities around young stars are promising targets for studying planet formation. Previous studies have revealed the presence…”
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Are inner disc misalignments common? ALMA reveals an isotropic outer disc inclination distribution for young dipper stars by Ansdell, M, Gaidos, E, Hedges, C, Tazzari, M, Kraus, A L, Wyatt, M C, Kennedy, G M, Williams, J P, Mann, A W, Angelo, I, Dûchene, G, Mamajek, E E, Carpenter, J, Esplin, T L, Rizzuto, A C

“…ABSTRACT Dippers are a common class of young variable star exhibiting day-long dimmings with depths of up to several tens of per cent. A standard explanation…”
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The first ALMA survey of protoplanetary discs at 3 mm: demographics of grain growth in the Lupus region by Tazzari, M, Testi, L, Natta, A, Williams, J P, Ansdell, M, Carpenter, J M, Facchini, S, Guidi, G, Hogherheijde, M, Manara, C F, Miotello, A, van der Marel, N

“…ABSTRACT We present the first ALMA survey of protoplanetary discs at 3 mm, targeting 36 young stellar objects in the Lupus star-forming region with deep…”
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The little dippers: transits of star-grazing exocomets? by Ansdell, M, Gaidos, E, Jacobs, T L, Mann, A, Manara, C F, Kennedy, G M, Vanderburg, A, Kenworthy, M, Hirano, T, LaCourse, D M, Hedges, C, Frasca, A

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ALMA survey of Lupus class III stars: Early planetesimal belt formation and rapid disc dispersal by Lovell, J B, Wyatt, M C, Ansdell, M, Kama, M, Kennedy, G M, Manara, C F, Marino, S, Matrà, L, Rosotti, G, Tazzari, M, Testi, L, Williams, J P

“…ABSTRACT Class III stars are those in star forming regions without large non-photospheric infrared emission, suggesting recent dispersal of their…”
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Zodiacal exoplanets in time (ZEIT) – II. A ‘super-Earth’ orbiting a young K dwarf in the Pleiades Neighbourhood by Gaidos, E, Mann, A W, Rizzuto, A, Nofi, L, Mace, G, Vanderburg, A, Feiden, G, Narita, N, Takeda, Y, Esposito, T M, De Rosa, R J, Ansdell, M, Hirano, T, Graham, J R, Kraus, A, Jaffe, D

“…We describe a 'super-Earth'-size (2.30 ± 0.16 R^sub ⊕^) planet transiting an early K-type dwarf star in the Campaign 4 field observed by the K2 mission. The…”
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Zodiacal exoplanets in time (ZEIT) XII: a directly imaged planetary-mass companion to a young Taurus M dwarf star by Gaidos, E, Hirano, T, Kraus, A L, Kuzuhara, M, Zhang, Z, Lee, R A, Salama, M, Berger, T A, Grunblatt, S K, Ansdell, M, Liu, M C, Harakawa, H, Hodapp, K W, Jacobson, S, Konishi, M, Kotani, T, Kudo, T, Kurokawa, T, Nishikawa, J, Omiya, M, Serizawa, T, Tamura, M, Ueda, A, Vievard, S

“…ABSTRACT We report the discovery of a resolved (0.9 arcsec) substellar companion to a member of the 1–5 Myr Taurus star-forming region. The host star (2M0437)…”
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Planetesimals around stars with TESS (PAST) – I. Transient dimming of a binary solar analogue at the end of the planet accretion era by Gaidos, E, Jacobs, T, LaCourse, D, Vanderburg, A, Rappaport, S, Berger, T, Pearce, L, Mann, A W, Weiss, L, Fulton, B, Behmard, A, Howard, A W, Ansdell, M, Ricker, G R, Vanderspek, R K, Latham, D W, Seager, S, Winn, J N, Jenkins, J M

“…ABSTRACT We report detection of quasi-periodic (1.5-d) dimming of HD 240779, the solar-mass primary in a 5 arcsec visual binary (also TIC 284730577), by the…”
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The peculiar dipping events in the disc-bearing young-stellar object EPIC 204278916 by Scaringi, S, Manara, C F, Barenfeld, S A, Groot, P J, Isella, A, Kenworthy, M A, Knigge, C, Maccarone, T J, Ricci, L, Ansdell, M

“…EPIC 204278916 has been serendipitously discovered from its K2 light curve that displays irregular dimmings of up to 65 per cent for ...25 consecutive days out…”
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Rapid CO gas dispersal from NO Lup’s class III circumstellar disc by Lovell, J B, Kennedy, G M, Marino, S, Wyatt, M C, Ansdell, M, Kama, M, Manara, C F, Matrà, L, Rosotti, G, Tazzari, M, Testi, L, Williams, J P

“…ABSTRACT We observed the K7 class III star NO Lup in an ALMA survey of the 1–3 Myr Lupus association and detected circumstellar dust and CO gas. Here we show…”
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Prevalence and underdiagnosis of chronic obstructive pulmonary disease among patients at risk in primary care by Hill, Kylie, Goldstein, Roger S, Guyatt, Gordon H, Blouin, Maria, Tan, Wan C, Davis, Lori L, Heels-Ansdell, Diane M, Erak, Marko, Bragaglia, Pauline J, Tamari, Itamar E, Hodder, Richard, Stanbrook, Matthew B

“…People with known risk factors for chronic obstructive pulmonary disease (COPD) are important targets for screening and early intervention. We sought to…”
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Stepping stones toward global space exploration by Ansdell, M., Ehrenfreund, P., McKay, C.

“…Several nations are currently engaging in or planning for robotic and human space exploration programs that target the Moon, Mars and near-Earth asteroids…”
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Hydrothermal evolution in the Hoidas Lake vein-type REE deposit, Saskatchewan, Canada; constraints from fluid inclusion microthermometry and evaporate mound analysis by Pandur, Krisztina, Kontak, Daniel J, Ansdell, Kevin M

“…The Hoidas Lake rare earth element (REE) deposit, located in northern Saskatchewan, Canada, is a structurally controlled vein-type LREE deposit with…”
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Radioactive abyssal granitic pegmatites and leucogranites in the Wollaston Domain, northern Saskatchewan, Canada; mineral compositions and conditions of emplacement in the Fraser Lakes area by Mckechnie, Christine L, Annesley, Irvine R, Ansdell, Kevin M

“…The Fraser Lakes area in the Wollaston Domain, in northern Saskatchewan, Canada, is located 25 km from the southeastern edge of the uranium-rich Athabasca…”
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Medium- to low-pressure pelitic gneisses of Fraser Lakes Zone B, Wollaston Domain, northern Saskatchewan, Canada; mineral compositions, metamorphic P-T-t path, and implications for the genesis of radioactive abyssal granitic pegmatites by McKechnie, Christine L, Annesley, Irvine R, Ansdell, Kevin M

“…The Fraser Lakes Zone B is a U-Th-REE deposit hosted by granitic pegmatite and leucogranite located in the Wollaston Domain of northern Saskatchewan, Canada,…”
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