Zobrazeno 1 - 10
of 399
pro vyhledávání: '"Oudmaijer, R D"'
Autor:
Koumpia, E., Sun, D., Koutoulaki, M., Ilee, J. D., de Wit, W. -J., Oudmaijer, R. D., Frost, A. J.
Publikováno v:
A&A 690, A209 (2024)
The inner parts of the hot discs surrounding massive young stellar objects (MYSOs) are still barely explored due to observational limitations in terms of angular resolution, scarcity of diagnostic lines and the embedded and rare nature of these targe
Externí odkaz:
http://arxiv.org/abs/2408.15482
Autor:
Yoffe, Gideon, van Boekel, Roy, Li, Aigen, Waters, L. B. F. M, Maaskant, Koen, Siebenmorgen, Ralf, Ancker, Mario van den, de la Roche, D. J. M Petit dit, Lopez, Bruno, Matter, Alexis, Varga, Jozsef, Hogerheijde, M. R, Weigelt, Gerd, Oudmaijer, R. D, Pantin, Eric, Meyer, M. R, Augereau, Jean-Charles, Henning, Thomas
Publikováno v:
A&A 674, A57 (2023)
We use the long-slit spectroscopy mode of the VISIR-NEAR experiment to perform diffraction-limited observations of eight nearby Herbig Ae protoplanetary disks. We extract spectra for various locations along the slit with a spectral resolution of R =
Externí odkaz:
http://arxiv.org/abs/2303.06592
Autor:
Irabor, T., Hoare, M. G., Burton, M., Cotton, W. D., Diamond, P., Dougherty, S., Ellingsen, S. P., Fender, R., Fuller, G. A., Garrington, S., Goldsmith, P. F., Green, J., Gunn, A. G., Jackson, J., Kurtz, S., Lumsden, S. L., Marti, J., McDonald, I., Molinari, S., Moore, T. J., Mutale, M., Muxlow, T., OBrien, T., Oudmaijer, R. D., Paladini, R., Pandian, J. D., Paredes, J. M., Richards, A. M. S., Sanchez-Monge, A., Spencer, R., Thompson, M. A., Umana, G., Urquhart, J. S., Wieringa, M., Zijlstra, A.
We present the first high spatial resolution radio continuum survey of the southern Galactic plane. The CORNISH project has mapped the region defined by $295^{\circ} < l < 350^{\circ}$; $|b| < 1^{\circ}$ at 5.5-GHz, with a resolution of 2.5$^{''}$ (F
Externí odkaz:
http://arxiv.org/abs/2301.01988
Autor:
Guzman-Diaz, J., Montesinos, B., Mendigutia, I., Kama, M., Meeus, G., Vioque, M., Oudmaijer, R. D., Villaver, E.
Publikováno v:
A&A 671, A140 (2023)
(Abridged) The stellar metallicity, [M/H], may have important implications for planet formation. In particular, Kama et al. proposed that the deficit of refractory elements in the surfaces of some Herbig Ae/Be stars (HAeBes) may be linked to the pres
Externí odkaz:
http://arxiv.org/abs/2212.14022
Autor:
Koumpia, Evgenia, Koutoulaki, M., de Wit, W. -J., Oudmaijer, R. D., Frost, A. J., Lumsden, S. L., Pittard, J. M.
With steady observational advances, the formation of massive stars is being understood in more detail. Numerical models are converging on a scenario where accretion discs play a key role. Direct observational evidence of such discs at a few au scales
Externí odkaz:
http://arxiv.org/abs/2211.13085
The fate of a massive star during the latest stages of its evolution is highly dependent on its mass-loss history and geometry, with the yellow hypergiants being key objects to study those phases of evolution. We present near-IR interferometric obser
Externí odkaz:
http://arxiv.org/abs/2207.05812
Young massive stars influence their surroundings from local to galactic scales, but the observational challenges associated with their distance and embedded nature has, until the recent decade, made high-resolution studies of these objects difficult.
Externí odkaz:
http://arxiv.org/abs/2108.05234
Autor:
Koumpia, E., de Wit, W. -J., Oudmaijer, R. D., Frost, A. J., Lumsden, S., Garatti, A. Caratti o, Goodwin, S. P., Stecklum, B., Mendigutıa, I., Ilee, J. D., Vioque, M.
Publikováno v:
A&A 654, A109 (2021)
Circumstellar discs are essential for high mass star formation, while multiplicity, in particular binarity, appears to be an inevitable outcome since the vast majority of massive stars (> 8 Msun) are found in binaries (up to 100%). We constrain the s
Externí odkaz:
http://arxiv.org/abs/2108.02868
Autor:
Marcos-Arenal, P., Mendigutía, I., Koumpia, E., Oudmaijer, R. D., Vioque, M., Guzmán-Díaz, J., Wichittanakom, C., de Wit, W. J., Montesinos, B., Ilee, J. D.
Publikováno v:
A&A 652, A68 (2021)
(Abridged:) It has been hypothesized that the location of Herbig Ae/Be stars (HAeBes) within the empirical relation between the inner disk radius (r$_{in}$), inferred from K-band interferometry, and the stellar luminosity (L$_*$), is related to the p
Externí odkaz:
http://arxiv.org/abs/2106.07675
Autor:
Ancker, M. E. van den, Fusillo, N. P. Gentile, Haworth, T. J., Manara, C. F., Miles-Páez, P. A., Oudmaijer, R. D., Panic, O., de la Roche, D. J. M. Petit dit, Petr-Gotzens, M. G., Vioque, M.
Publikováno v:
A&A 651, L11 (2021)
Aims. We present the first detailed analysis of the astrophysical parameters of the poorly studied Sco-Cen member HD 152384 and its circumstellar environment. Methods. We analyze newly obtained optical-near-IR XSHOOTER spectra, as well as archival TE
Externí odkaz:
http://arxiv.org/abs/2105.08327