Zobrazeno 1 - 10
of 599
pro vyhledávání: '"Wesson, R."'
Autor:
Gómez-Llanos, V., García-Rojas, J., Morisset, C., Monteiro, H., Jones, D., Wesson, R., Boffin, H. M. J., Corradi, R. L. M.
Publikováno v:
A&A 689, A228 (2024)
(Abridged) The abundance discrepancy problem in planetary nebulae (PNe) has long puzzled astronomers. NGC6153, with its high Abundance Discrepancy Factor (ADF~10), provides an opportunity to understand the chemical structure and ionisation processes
Externí odkaz:
http://arxiv.org/abs/2407.06385
Autor:
Matsuura, Mikako, Boyer, M., Arendt, Richard G., Larsson, J., Fransson, C., Rest, A., Ravi, A. P., Park, S., Cigan, P., Temim, T., Dwek, E., Barlow, M. J., Bouchet, P., Clayton, G., Chevalier, R., Danziger, J., De Buizer, J., De Looze, I., De Marchi, G., Fox, O., Gall, C., Gehrz, R. D., Gomez, H. L., Indebetouw, R., Kangas, T., Kirchschlager, F., Kirshner, R., Lundqvist, P., Marcaide, J. M., Martí-Vidal, I., Meixner, M., Milisavljevic, D., Orlando, S., Otsuka, M., Priestley, F., Richards, A. M. S., Schmidt, F., Staveley-Smith, L., Smith, Nathan, Spyromilio, J., Vink, J., Wang, Lifan, Watson, D., Wesson, R., Wheeler, J. C., Woodward, C. E., Zanardo, G., Alp, D., Burrows, D.
JWST/NIRCam obtained high angular-resolution (0.05-0.1''), deep near-infrared 1--5 micron imaging of Supernova (SN) 1987A taken 35 years after the explosion. In the NIRCam images, we identify: 1) faint H2 crescents, which are emissions located betwee
Externí odkaz:
http://arxiv.org/abs/2404.10042
Autor:
Fransson, C., Barlow, M. J., Kavanagh, P. J., Larsson, J., Jones, O. C., Sargent, B., Meixner, M., Bouchet, P., Temim, T., Wright, G. S., Blommaert, J. A. D. L., Habel, N., Hirschauer, A. S., Hjorth, J., Lenkić, L., Tikkanen, T., Wesson, R., Coulais, A., Fox, O. D., Gastaud, R., Glasse, A., Jaspers, J., Krause, O., Lau, R. M., Nayak, O., Rest, A., Colina, L., van Dishoeck, E. F., Gudel, M., Henning, Th., Lagage, P. -O., Őstlin, G., Ray, T. P., Vandenbussche, B.
Publikováno v:
SCIENCE 22 Feb 2024 Vol 383, Issue 6685 pp. 898-903
The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that a compact object (a neutron star or black hole) was formed in the explosion. There has been no direct observation of this compact object. In this work, w
Externí odkaz:
http://arxiv.org/abs/2403.04386
Autor:
Bouchet, P., Gastaud, R., Coulais, A., Barlow, M. J., Fransson, C., Kavanagh, P. J., Larsson, J., Temim, T., Jones, O. C., Hirschauer, A. S., Tikkanen, T., Blommaert, J. A. D. L., Fox, O. D., Glasse, A., Habel, N., Hjorth, J., Jaspers, J., Krause, O., Lau, R. M., Lenkić, L., Meixner, M., Nayak, O., Rest, A., Sargent, B., Wesson, R., Wright, G. S., Colina, L., Van Dishoeck, E. F., Güdel, M., Henning, Th., Lagage, P. -O., Östlin, G., Ray, T. P., Vandenbussche, B.
There exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 years, gives us the opportunity to explore the mid-IR properties of SNe, the dust in their ejecta and surrounding m
Externí odkaz:
http://arxiv.org/abs/2402.14014
Autor:
Crowther, Paul A, Barlow, M J, Royer, P, Hillier, D J, Bestenlehner, J M, Morris, P W, Wesson, R
We present Herschel PACS spectroscopy of the [O III] 88.4um fine-structure line in the nearby WC8+O binary system gamma Vel to determine its oxygen abundance. The critical density of this line corresponds to several 10^5 R* such that it is spatially
Externí odkaz:
http://arxiv.org/abs/2310.15170
Autor:
Wesson, R., Matsuura, Mikako, Zijlstra, Albert A., Volk, Kevin, Kavanagh, Patrick J., García-Segura, Guillermo, McDonald, I., Sahai, Raghvendra, Barlow, M. J., Cox, Nick L. J., Bernard-Salas, Jeronimo, Aleman, Isabel, Cami, Jan, Clark, Nicholas, Dinerstein, Harriet L., Justtanont, K., Kaplan, Kyle F., Manchado, A., Peeters, Els, Van de Steene, Griet C., van Hoof, Peter A. M.
We present JWST images of the well-known planetary nebula NGC 6720 (the Ring Nebula), covering wavelengths from 1.6$\mu$m to 25 $\mu$m. The bright shell is strongly fragmented with some 20 000 dense globules, bright in H$_2$, with a characteristic di
Externí odkaz:
http://arxiv.org/abs/2308.09027
Autor:
Wesson, R., Bevan, A. M., Barlow, M. J., De Looze, I., Matsuura, M., Clayton, G., Andrews, J.
We present a study of the dust associated with the core-collapse supernova SN~1995N. Infrared emission detected 14--15 years after the explosion was previously attributed to thermally echoing circumstellar material associated with the SN progenitor.
Externí odkaz:
http://arxiv.org/abs/2308.09028
Autor:
Jones, O. C., Kavanagh, P. J., Barlow, M. J., Temim, T., Fransson, C., Larsson, J., Blommaert, J. A. D. L., Meixner, M., Lau, R. M., Sargent, B., Bouchet, P., Hjorth, J., Wright, G. S., Coulais, A., Fox, O. D., Gastaud, R., Glasse, A., Habel, N., Hirschauer, A. S., Jaspers, J., Krause, O., Lenkić, Nayak, O., Rest, A., Tikkanen, T., Wesson, R., Colina, L., van Dishoeck, E. F., Güdel, M., Henning, Th., Lagage, P. -O., Östlin, Ray, T. P., Vandenbussche, B.
Supernova (SN) 1987A is the nearest supernova in $\sim$400 years. Using the {\em JWST} MIRI Medium Resolution Spectrograph, we spatially resolved the ejecta, equatorial ring (ER) and outer rings in the mid-infrared 12,927 days after the explosion. Th
Externí odkaz:
http://arxiv.org/abs/2307.06692
Autor:
Gómez-Llanos, V., García-Rojas, J., Morisset, C., Jones, D., Monteiro, H., Wesson, R., Boffin, H. M. J., Corradi, R. L. M., Pérez-Toledo, F., Rodríguez-Gil, P.
In this contribution, we present the results of a study on the high abundance discrepancy factor (ADF $\sim$ 10) planetary nebula (PN) NGC 6153 with MUSE. We have constructed flux maps for dozens of emission lines, that allowed us to build spatially
Externí odkaz:
http://arxiv.org/abs/2302.11525
Autor:
Larsson, J., Fransson, C., Sargent, B., Jones, O. C., Barlow, M. J., Bouchet, P., Meixner, M., Blommaert, J. A. D. L., Coulais, A., Fox, O. D., Gastaud, R., Glasse, A., Habel, N., Hirschauer, A. S., Hjorth, J., Jaspers, J., Kavanagh, P. J., Krause, O., Lau, R. M., Lenkic, L., Nayak, O., Rest, A., Temim, T., Tikkanen, T., Wesson, R., Wright, G. S.
We present initial results from JWST NIRSpec integral field unit observations of the nearby Supernova (SN) 1987A. The observations provide the first spatially-resolved spectroscopy of the ejecta and equatorial ring (ER) over the 1-5 \mu m range. We c
Externí odkaz:
http://arxiv.org/abs/2302.03576