Zobrazeno 1 - 10
of 698
pro vyhledávání: '"A. Damineli"'
Autor:
Gull, Theodore R., Hartman, Henrik, Corcoran, Michael F., Damineli, Augusto, Madura, Thomas, Moffat, Anthony F. J., Richardson, Noel D., Weigelt, Gerd
Eta Carinae underwent the Great Eruption in the 1840s and a Lesser Eruption in the 1890s. Its apparent spectrum, modified by intervening ejecta, the Homunculus and Little Homunculus, continues to evolve but contains information pertaining to events i
Externí odkaz:
http://arxiv.org/abs/2403.13954
Autor:
Damineli, Augusto, Richardson, Noel D., Navarete, Felipe, Gull, Theodore. R., Fernández-Lajús, Eduardo, Moffat, Anthony F. J., Hillier, Desmond J., Weigelt, Gerd, Corcoran, Michael F.
Changes in the flux and spectrum of Eta Carinae since 1900 have been attributed to the evolution of the central binary by some. Others suggest evolution in the occulting ejecta. The brightness jump in the 1940s, which coincided with the appearance of
Externí odkaz:
http://arxiv.org/abs/2312.17421
Autor:
Gull, Theodore R., Hartman, Henrik, Teodoro, Mairan, Hillier, D. John, Corcoran, Michael F., Damineli, Augusto, Hamaguchi, Kenji, Madura, Thomas, Moffat, Anthony F. J., Morris, Patrick, Richardson, Noel D., Stevens, Ian R., Weigelt, Gerd
Previous STIS long-slit observations of Eta Carinae identified numerous absorption features in both the stellar spectrum, and in the adjacent nebular spectra, along our line-of-sight. The absorption features became temporarily stronger when the ioniz
Externí odkaz:
http://arxiv.org/abs/2305.13216
Autor:
Strawn, Emily, Richardson, Noel D., Moffat, Anthony F. J., Ibrahim, Nour, Lane, Alexis, Pickett, Connor, Chené, André-Nicolas, Corcoran, Michael F., Damineli, Augusto, Gull, Theodore R., Hillier, D. John, Morris, Patrick, Pablo, Herbert, Thomas, Joshua D., Stevens, Ian R., Teodoro, Mairan, Weigelt, Gerd
The binary eta Carinae is the closest example of a very massive star, which may have formed through a merger during its Great Eruption in the mid-nineteenth century. We aimed to confirm and improve the kinematics using a spectroscopic data set taken
Externí odkaz:
http://arxiv.org/abs/2301.00064
W51A is the most active star formation region of the Giant \ion{H}{2} region W51. It harbors the two massive proto-clusters W51e and W51\,IRS2, which are very rare in the Galaxy. We aim to identify the new born massive stars and UCHII regions to deri
Externí odkaz:
http://arxiv.org/abs/2211.13841
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:
Rocha, Danilo F., Almeida, Leonardo A., Damineli, Augusto, Navarete, Felipe, Abdul-Masih, Michael, Mace, Gregory N.
Westerlund 1 (Wd 1) is one of the most relevant star clusters in the Milky Way to study massive star formation, although it is still poorly known. Here, we used photometric and spectroscopic data to model the eclipsing binary W36, showing that its sp
Externí odkaz:
http://arxiv.org/abs/2210.04985
Autor:
Pickett, Connor S., Richardson, Noel D., Gull, Theodore, Hillier, D. John, Hartman, Henrik, Ibrahim, Nour, Lane, Alexis M., Strawn, Emily, Damineli, Augusto, Moffat, Anthony F. J., Navarete, Felipe, Weigelt, Gerd
The Na D absorption doublet in the spectrum of $\eta$ Carinae is complex, with multiple absorption features associated with the Great Eruption (1840s), the Lesser Eruption (1890s), and interstellar clouds. The velocity profile is further complicated
Externí odkaz:
http://arxiv.org/abs/2208.06389
Autor:
Espinoza-Galeas, David, Corcoran, Michael Francis, Hamaguchi, Kenji, Russell, Christopher M. P., Gull, Theodore R., Moffat, Anthony, Richardson, Noel D., Weigelt, Gerd, Hillier, D. John, Damineli, Augusto, Stevens, Ian R., Madura, Thomas, Gendreau, Keith, Arzoumanian, Zaven, Navarete, Felipe
We report high-precision X-ray monitoring observations in the 0.4-10 keV band of the luminous, long-period colliding-wind binary Eta Carinae up to and through its most recent X-ray minimum/periastron passage in February 2020. Eta Carinae reached its
Externí odkaz:
http://arxiv.org/abs/2207.03457
Eta Carinae: an evolving view of the central binary, its interacting winds and its foreground ejecta
Autor:
Gull, Theodore R., Hillier, D. John, Hartman, Henrik, Corcoran, Michael F., Damineli, Augusto, Espinoza-Galeas, David, Hamaguchi, Kenji, Navarete, Felipe, Nielsen, Krister, Madura, Thomas, Moffat, Anthony F. J., Morris, Patrick, Richardson, Noel D., Russell, Christopher M. P., Stevens, Ian R., Weigelt, Gerd
FUV spectra of Eta Car, recorded across two decades with HST/STIS, document multiple changes in resonant lines caused by dissipating extinction in our line of sight. The FUV flux has increased nearly ten-fold which has led to increased ionization of
Externí odkaz:
http://arxiv.org/abs/2205.15116