Zobrazeno 1 - 10
of 200
pro vyhledávání: '"Gull, T. R."'
Autor:
Damineli, A., Hillier, D. J., Navarete, F., Moffat, A. F. J., Weigelt, G., Corcoran, M. F., Gull, T. R., Richardson, N. D., Ho, T. P., Madura, T. I., Espinoza-Galeas, D., Hartman, H., Morris, P., Pickett, C. S., Stevens, I. R., Russell, C. M. P., Hamaguchi, K., Jablonski, F. J., Teodoro, M., McGee, P., Cacella, P., Heathcote, B., Harrison, K., Johnston, M., Bohlsen, T., Di Scala, G.
Eta Carinae ($\eta$\,Car) exhibits a unique set of P Cygni profiles with both broad and narrow components. Over many decades, the spectrum has changed -- there has been an increase in observed continuum fluxes and a decrease in FeII and HI emission l
Externí odkaz:
http://arxiv.org/abs/2211.01445
Autor:
Gull, T. R.
The spatially-resolved winds of the massive binary, Eta Carinae, extend an arcsecond on the sky, well beyond the 10 to 20 milliarcsecond binary orbital dimension. Stellar wind line profiles, observed at very different angular resolutions of VLTI/AMBE
Externí odkaz:
http://opus.kobv.de/ubp/volltexte/2008/1820/
Autor:
Damineli, A., Navarete, F., Hillier, D. J., Moffat, A. F. J., Corcoran, M. F., Gull, T. R., Richardson, N. D., Weigelt, G., Morris, P. W., Stevens, I.
Eta Carinae is a massive interacting binary system shrouded in a complex circumstellar environment whose evolution is the source of the long-term brightening observed during the last 80 years. An occulter, acting as a natural coronagraph, impacts obs
Externí odkaz:
http://arxiv.org/abs/2105.00590
Autor:
Oudshoorn, L. H. T., Israel, F. P., Brinchmann, J., Kloppenburg, M. B. C., Brown, A. G. A., Bally, J., Gull, T. R., Boyd, P. T.
Simeis 57 (HS 191) is an optically bright nebula in the Cygnus X region with a peculiar appearance that suggests an outflow from a rotating source. Newly obtained observations and archival data reveal Simeis 57 as a low-density ($n_{e}\,\sim\,100$ cm
Externí odkaz:
http://arxiv.org/abs/2104.14585
Autor:
Gull, T. R., Morris, P. W., Black, J. H., Nielsen, K. E., Barlow, M. J., Royer, P., Swinyard, B. M.
The evolved massive binary star Eta Carinae underwent eruptive mass loss events that formed the complex bi-polar Homunculus nebula harboring tens of solar masses of unusually nitrogen-rich gas and dust. Despite expectations for the presence of a sign
Externí odkaz:
http://arxiv.org/abs/2010.02351
We present HST/STIS observations and analysis of two prominent nebular structures around the central source of Eta Carinae, the knots C and D. The former is brighter than the latter for emission lines from intermediate or high ionization potential io
Externí odkaz:
http://arxiv.org/abs/2005.02139
Autor:
Mehner, A., de Wit, W. -J., Asmus, D., Morris, P. W., Agliozzo, C., Barlow, M. J., Gull, T. R., Hillier, D. J., Weigelt, G.
Publikováno v:
A&A 630, L6 (2019)
Eta Car is one of the most luminous and massive stars in our Galaxy and is the brightest mid-infrared (mid-IR) source in the sky, outside our solar system. Since the late 1990s the central source has dramatically brightened at ultraviolet and optical
Externí odkaz:
http://arxiv.org/abs/1908.09154
Autor:
Cordiner, M. A., Linnartz, H., Cox, N. L. J., Cami, J., Najarro, F., Proffitt, C. R., Lallement, R., Ehrenfreund, P., Foing, B. H., Gull, T. R., Sarre, P. J., Charnley, S. B.
Recent advances in laboratory spectroscopy lead to the claim of ionized Buckminsterfullerene (C60+) as the carrier of two diffuse interstellar bands (DIBs) in the near-infrared. However, irrefutable identification of interstellar C60+ requires a matc
Externí odkaz:
http://arxiv.org/abs/1904.08821
Autor:
Cordiner, M. A., Cox, N. L. J., Lallement, R., Najarro, F., Cami, J., Gull, T. R., Foing, B. H., Linnartz, H., Lindler, D. J., Proffitt, C. R., Sarre, P. J., Charnley, S. B.
Due to recent advances in laboratory spectroscopy, the first optical detection of a very large molecule has been claimed in the diffuse interstellar medium (ISM): C60+ (ionized Buckminsterfullerene). Confirming the presence of this molecule would hav
Externí odkaz:
http://arxiv.org/abs/1704.01501
Autor:
Teodoro, M., Damineli, A., Heathcote, B., Richardson, N. D., Moffat, A. F. J., St-Jean, L., Russell, C., Gull, T. R., Madura, T. I., Pollard, K. R., Walter, F., Coimbra, A., Prates, R., Fernández-Lajús, E., Gamen, R. C., Hickel, G., Henrique, W., Navarete, F., Andrade, T., Jablonski, F., Luckas, P., Locke, M., Powles, J., Bohlsen, T., Chini, R., Corcoran, M. F., Hamaguchi, K., Groh, J. H., Hillier, D. J., Weigelt, G.
{\eta} Carinae is an extremely massive binary system in which rapid spectrum variations occur near periastron. Most notably, near periastron the He II $\lambda 4686$ line increases rapidly in strength, drops to a minimum value, then increases briefly
Externí odkaz:
http://arxiv.org/abs/1601.03396