Zobrazeno 1 - 10
of 753
pro vyhledávání: '"Dufton, P."'
Autor:
Lennon, D. J., Dufton, P. L., Villaseñor, J. I., Langer, N., Evans, C. J., Sana, H., Taylor, W. D.
Publikováno v:
A&A 688, A141 (2024)
The spin evolution of stars in close binary systems can be strongly affected by tides. We investigate the rotational synchronisation of the stellar components for 69 SB1 systems and 14 SB2 B-type systems in the 30 Doradus region of the Large Magellan
Externí odkaz:
http://arxiv.org/abs/2405.17608
The young massive SMC cluster NGC 330 seen by MUSE III. Stellar parameters and rotational velocities
Autor:
Bodensteiner, J., Sana, H., Dufton, P. L., Wang, C., Langer, N., Banyard, G., Mahy, L., de Koter, A., de Mink, S. E., Evans, C. J., Götberg, Y., Hénault-Brunet, V., Patrick, L. R., Schneider, F. R. N.
Publikováno v:
A&A 680, A32 (2023)
The origin of initial rotation rates of stars, and how a star's surface rotational velocity changes during the evolution, either by internal angular momentum transport or due to interactions with a binary companion, remain open questions in stellar a
Externí odkaz:
http://arxiv.org/abs/2308.14799
Autor:
Villaseñor, J. I., Lennon, D. J., Picco, A., Shenar, T., Marchant, P., Langer, N., Dufton, P. L., Nardini, F., Evans, C. J., Bodensteiner, J., de Mink, S. E., Götberg, Y., Soszyński, I., Taylor, W. D., Sana, H.
Recent studies of massive binaries with putative black hole companions have uncovered a phase of binary evolution that has not been observed before, featuring a bloated stripped star that very recently ceased transferring mass to a main-sequence comp
Externí odkaz:
http://arxiv.org/abs/2307.07766
Autor:
D. L. Finney, A. M. Blyth, M. Gallagher, H. Wu, G. J. Nott, M. I. Biggerstaff, R. G. Sonnenfeld, M. Daily, D. Walker, D. Dufton, K. Bower, S. Böing, T. Choularton, J. Crosier, J. Groves, P. R. Field, H. Coe, B. J. Murray, G. Lloyd, N. A. Marsden, M. Flynn, K. Hu, N. M. Thamban, P. I. Williams, P. J. Connolly, J. B. McQuaid, J. Robinson, Z. Cui, R. R. Burton, G. Carrie, R. Moore, S. J. Abel, D. Tiddeman, G. Aulich
Publikováno v:
Earth System Science Data, Vol 16, Pp 2141-2163 (2024)
Cloud feedbacks associated with deep convective anvils remain highly uncertain. In part, this uncertainty arises from a lack of understanding of how microphysical processes influence the cloud radiative effect. In particular, climate models have a po
Externí odkaz:
https://doaj.org/article/c74d6628cac94e379a02f4300c777047
Autor:
Harriet Mirieri, Ruth Nduati, Jeanette Dawa, Lydia Okutoyi, Eric Osoro, Cyrus Mugo, Dalton Wamalwa, Hafsa Jin, Dufton Mwaengo, Nancy Otieno, Doris Marwanga, Mufida Shabibi, Peninah Munyua, John Kinuthia, Erin Clancey, Marc-Alain Widdowson, M. Kariuki Njenga, Jennifer R. Verani, Irene Inwani
Publikováno v:
BMC Pregnancy and Childbirth, Vol 24, Iss 1, Pp 1-11 (2024)
Abstract Introduction Adverse birth outcomes particularly preterm births and congenital anomalies, are the leading causes of infant mortality globally, and the burden is highest in developing countries. We set out to determine the frequency of advers
Externí odkaz:
https://doaj.org/article/17c0577ea1cc46b3975e3149f41ede57
Autor:
Dufton, P. L., Lennon, D. J., Villasenor, J. I., Howarth, I. D., Evans, C. J., de Mink, S. E., Sana, H., Taylor, W. D.
The evolutionary status of Be-type stars remains unclear, with both single-star and binary pathways having been proposed. Here, VFTS spectroscopy of 73 Be-type stars, in the spectral-type range, B0--B3, is analysed to estimate projected rotational ve
Externí odkaz:
http://arxiv.org/abs/2203.02440
Autor:
Lennon, D. J., Dufton, P. L., Villaseñor, J. I., Evans, C. J., Langer, N., Saxton, R., Monageng, I. M., Toonen, S.
Publikováno v:
A&A 665, A80 (2022)
The star NGC2004#115 in the LMC, originally classified as an (SB1) Be spectroscopic binary, bears some morphological resemblance to the Galactic systems LB-1 and HR 6819, both of which are proposed as either Be+black hole (BH) or Be+stripped He-star
Externí odkaz:
http://arxiv.org/abs/2111.12173
Autor:
Villaseñor, J. I., Taylor, W. D., Evans, C. J., Ramírez-Agudelo, O. H., Sana, H., Almeida, L. A., de Mink, S. E., Dufton, P. L., Langer, N.
We present results from the B-type Binaries Characterisation (BBC) programme, a multi-epoch spectroscopic study of 88 early B-type binary candidates in the 30 Doradus region of the Large Magellanic Cloud (LMC). From radial-velocity analysis of 29 obs
Externí odkaz:
http://arxiv.org/abs/2107.10170
Autor:
Lennon, D. J., Apellániz, J. Maíz, Irrgang, A., Bohlin, R., Deustua, S., Dufton, P. L., Simón-Díaz, S., Herrero, A., Casares, J., Muñoz-Darias, T., Smartt, S. J., Hernández, J. I. González, de Burgos, A.
Publikováno v:
A&A 649, A167 (2021)
LB-1 has variously been proposed as either an X-ray dim B-type star plus black hole (B+BH) binary, or a Be star plus an inflated stripped star (Be+Bstr) binary. The Space Telescope Imaging Spectrograph (STIS) on board HST was used to obtain a flux-ca
Externí odkaz:
http://arxiv.org/abs/2103.14069
Autor:
Sagun Parakh, Kathryn Lee, Jeremy Rodrigues, Paul Yates, Polly Hypatia Dufton, Elena Tarasenko, Katrina Midgley, Ray Kelly, Surein Arulananda
Publikováno v:
BMJ Open, Vol 14, Iss 1 (2024)
Introduction Cancer is predominantly a disease of older adults, with an increasing number of cancer diagnoses in individuals aged 65 or older. Multiple geriatric factors have been shown to impact patient outcomes in cancer treatment. However, oncolog
Externí odkaz:
https://doaj.org/article/a187c166cf784616bd6b8f5c03c643e8