Outputs (139)

Physical properties of the WASP-44 planetary system from simultaneous multi-colour photometry (2013)
Journal Article
Mancini, L., Nikolov, N., Southworth, J., Chen, G., Fortney, J. J., Tregloan-Reed, J., Ciceri, S., van Boekel, R., & Henning, T. (2013). Physical properties of the WASP-44 planetary system from simultaneous multi-colour photometry. Monthly Notices of the Royal Astronomical Society, 430(4), 2932-2942. https://doi.org/10.1093/mnras/stt095

We present ground-based broad-band photometry of two transits in the WASP-44 planetary system obtained simultaneously through four optical (Sloan g′, r′, i′, z′) and three near-infrared (NIR; J, H, K) filters. We achieved low scatters of 1–2 mmag per... Read More about Physical properties of the WASP-44 planetary system from simultaneous multi-colour photometry.

New Galactic supernova remnants discovered with IPHAS (2013)
Journal Article
Sabin, L., Parker, Q. A., Contreras, M. E., Olguín, L., Frew, D. J., Stupar, M., Vázquez, R., Wright, N. J., Corradi, R. L. M., & Morris, R. A. H. (2013). New Galactic supernova remnants discovered with IPHAS. Monthly Notices of the Royal Astronomical Society, 431(1), 279-291. https://doi.org/10.1093/mnras/stt160

As part of a systematic search programme of a 10° wide strip of the northern Galactic plane, we present preliminary evidence for the discovery of four (and possibly five) new supernova remnants (SNRs). The pilot search area covered the 19–20 h right... Read More about New Galactic supernova remnants discovered with IPHAS.

WASP-54b, WASP-56b, and WASP-57b: Three new sub-Jupiter mass planets from SuperWASP (2013)
Journal Article
Faedi, F., Pollacco, D., Barros, S. C. C., Brown, D., Collier Cameron, A., Doyle, A. P., Enoch, R., Gillon, M., Gómez Maqueo Chew, Y., Hébrard, G., Lendl, M., Liebig, C., Smalley, B., Triaud, A. H. M. J., West, R. G., Wheatley, P. J., Alsubai, K. A., Anderson, D. R., Armstrong, D., Bento, J., …Watson, C. (2013). WASP-54b, WASP-56b, and WASP-57b: Three new sub-Jupiter mass planets from SuperWASP. Astronomy & Astrophysics, 551, Article A73. https://doi.org/10.1051/0004-6361/201220520

We present three newly discovered sub-Jupiter mass planets from the SuperWASP survey: WASP-54b is a heavily bloated planet of mass 0.636+0.025-0.024MJ and radius 1.653+0.090-0.083RJ. It orbits a F9 star, evolving off the main sequence, every 3.69 day... Read More about WASP-54b, WASP-56b, and WASP-57b: Three new sub-Jupiter mass planets from SuperWASP.

Thermal emission at 3.6–8 μm from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star (2013)
Journal Article
Anderson, D. R., Smith, A. M. S., Madhusudhan, N., Wheatley, P. J., Collier Cameron, A., Hellier, C., Campo, C., Gillon, M., Harrington, J., Maxted, P. F. L., Pollacco, D., Queloz, D., Smalley, B., Triaud, A. H. M. J., & West, R. G. (2013). Thermal emission at 3.6–8 μm from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star. Monthly Notices of the Royal Astronomical Society, 430(4), 3422-3431. https://doi.org/10.1093/mnras/stt140

We report detection of thermal emission from the exoplanet WASP-19b at 3.6, 4.5, 5.8 and 8.0 μm. We used the InfraRed Array Camera on the Spitzer Space Telescope to observe two occultations of WASP-19b by its host star. We combine our new detections... Read More about Thermal emission at 3.6–8 μm from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star.

A lower radius and mass for the transiting extrasolar planet HAT-P-8 b (2013)
Journal Article
Mancini, L., Southworth, J., Ciceri, S., Fortney, J. J., Morley, C. V., Dittmann, J. A., Tregloan-Reed, J., Bruni, I., Barbieri, M., Evans, D. F., D’Ago, G., Nikolov, N., & Henning, T. (2013). A lower radius and mass for the transiting extrasolar planet HAT-P-8 b. Astronomy & Astrophysics, 551, Article A11. https://doi.org/10.1051/0004-6361/201220291

Context. The extrasolar planet HAT-P-8 b was thought to be one of the more inflated transiting hot Jupiters.

Aims. By using new and existing photometric data, we computed precise estimates of the physical properties of the system.

Methods. We p... Read More about A lower radius and mass for the transiting extrasolar planet HAT-P-8 b.

First results of an Hα based search of classical Be stars in the Perseus Arm and beyond (2013)
Journal Article
Raddi, R., Drew, J. E., Fabregat, J., Steeghs, D., Wright, N. J., Sale, S. E., Farnhill, H. J., Barlow, M. J., Greimel, R., Sabin, L., Corradi, R. M. L., & Drake, J. J. (2013). First results of an Hα based search of classical Be stars in the Perseus Arm and beyond. Monthly Notices of the Royal Astronomical Society, 430(3), 2169-2187. https://doi.org/10.1093/mnras/stt038

We investigate a region of the Galactic plane, between 120° ≤ ℓ ≤ 140° and −1° ≤ b ≤ +4°, and uncover a population of moderately reddened (E(B − V) ∼ 1) classical Be stars within and beyond the Perseus and Outer Arms. 370 candidate emission-line star... Read More about First results of an Hα based search of classical Be stars in the Perseus Arm and beyond.

The stellar activity-rotation relationship: The stellar activity-rotation relationship (2013)
Journal Article
Wright, N., Drake, J., Mamajek, E., & Henry, G. (2013). The stellar activity-rotation relationship: The stellar activity-rotation relationship. Astronomische Nachrichten, 334(1-2), 151-154. https://doi.org/10.1002/asna.201211764

Using a new catalog of 824 solar and late-type stars with measured X-ray luminosities and rotation periods we have studied the relationship between rotation and stellar activity that is believed to be a probe of the underlying stellar dynamo. Using a... Read More about The stellar activity-rotation relationship: The stellar activity-rotation relationship.

Angular momentum evolution of cool stars: Toward a synthesis of observations and theory before and after the ZAMS (2013)
Journal Article
Meibom, S., Barnes, S., Covey, K., Jeffries, R., Matt, S., Morin, J., Palacios, A., Reiners, A., Sicilia-Aguilar, A., & Irwin, J. (2013). Angular momentum evolution of cool stars: Toward a synthesis of observations and theory before and after the ZAMS. Astronomische Nachrichten, 334(1-2), 168-171. https://doi.org/10.1002/asna.201211777

The coexistence of fast and slowly rotating cool stars in ZAMS clusters – forming distinct sequences in the color vs. rotation period plane – is providing clues to differences in their pre main-sequence angular momentum evolution. This Cool Stars 17... Read More about Angular momentum evolution of cool stars: Toward a synthesis of observations and theory before and after the ZAMS.

The VLT-FLAMES Tarantula Survey: IX. The interstellar medium seen through diffuse interstellar bands and neutral sodium⋆ (2013)
Journal Article
van Loon, J. T., Bailey, M., Tatton, B. L., Maíz Apellániz, J., Crowther, P. A., de Koter, A., Evans, C. J., Hénault-Brunet, V., Howarth, I. D., Richter, P., Sana, H., Simón-Díaz, S., Taylor, W., & Walborn, N. R. (2013). The VLT-FLAMES Tarantula Survey: IX. The interstellar medium seen through diffuse interstellar bands and neutral sodium⋆. Astronomy & Astrophysics, 550, Article A108. https://doi.org/10.1051/0004-6361/201220210

Context. The Tarantula Nebula (a.k.a. 30 Dor) is a spectacular star-forming region in the Large Magellanic Cloud (LMC), seen through gas in the Galactic disc and halo. Diffuse interstellar bands (DIBs) offer a unique probe of the diffuse, cool-warm g... Read More about The VLT-FLAMES Tarantula Survey: IX. The interstellar medium seen through diffuse interstellar bands and neutral sodium⋆.

Intrinsic magnetism in nanosheets of SnO2: A first-principles study (2013)
Journal Article
Abreu Da Silva Morbec. (2013). Intrinsic magnetism in nanosheets of SnO2: A first-principles study. Journal of Magnetism and Magnetic Materials, 104 -108. https://doi.org/10.1016/j.jmmm.2012.10.017

We propose intrinsic magnetism in nanosheets of SnO2, based on first-principles calculations. The electronic structure and spin density reveal that p orbitals of the oxygen atoms, surrounding Sn vacancies, have a non-itinerant nature which gives birt... Read More about Intrinsic magnetism in nanosheets of SnO2: A first-principles study.