Zobrazeno 1 - 10
of 269
pro vyhledávání: '"Weigelt Gerd"'
Autor:
Richardson, Noel D., Schaefer, Gail H., Eldridge, Jan J., Spejcher, Rebecca, Holdsworth, Amanda, Lau, Ryan M., Monnier, John D., Moffat, Anthony F. J., Weigelt, Gerd, Williams, Peredur M., Kraus, Stefan, Bouquin, Jean-Baptiste Le, Anugu, Narsireddy, Chhabra, Sorabh, Codron, Isabelle, Ennis, Jacob, Gardner, Tyler, Gutierrez, Mayra, Ibrahim, Noura, Labdon, Aaron, Lanthermann, Cyprien, Setterholm, Benjamin R.
Classical Wolf-Rayet stars are the descendants of massive OB stars that have lost their hydrogen envelopes and are burning helium in their cores prior to exploding as type Ib/c supernovae. The mechanisms for losing their hydrogen envelopes are either
Externí odkaz:
http://arxiv.org/abs/2410.09259
Autor:
Richardson, Noel D., Daly, Andrea R., Williams, Peredur M., Hill, Grant M., Shenavrin, Victor I., Endo, Izumi, Chené, André-Nicolas, Karnath, Nicole, Lau, Ryan M., Moffat, Anthony F. J., Weigelt, Gerd
Several long-period binaries with a carbon-rich Wolf-Rayet star and an O star produce dust in their wind collisions. In eccentric binaries, this is seen most strongly near periastron passage. The exact conditions leading to dust creation require orbi
Externí odkaz:
http://arxiv.org/abs/2405.10454
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
Mass loss at the asymptotic giant branch (AGB) plays an important role not only in the final fates of stars, but also in the chemical evolution of galaxies. Nevertheless, the metallicity effects on AGB mass loss are not yet fully understood. We prese
Externí odkaz:
http://arxiv.org/abs/2403.03287
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:
Leftley, James, Petrov, Romain, Moszczynski, Niklas, Vermot, Pierre, Hoenig, Sebastian, Rosas, Violeta Gamez, Isbell, Jacob, Jaffe, Walter, Clenet, Yann, Augereau, Jean-Charles, Berio, Philippe, Davies, Richard, Henning, Thomas, Lagarde, Stephane, Lopez, Bruno, Matter, Alexis, Meilland, Anthony, Millour, Florentin, Nesvadba, Nicole, Shimizu, Taro, Sturm, Eckhard, Weigelt, Gerd
Publikováno v:
A&A 686, A204 (2024)
The Very Large Telescope Interferometer (VLTI) has been providing breakthrough images of the dust in the central parsecs of Active Galactic Nuclei (AGN), a key component of the AGN unification scheme and AGN host galaxy interaction. In single IR band
Externí odkaz:
http://arxiv.org/abs/2312.12125
Autor:
Lau, Ryan M., Hankins, Matthew J., Sanchez-Bermudez, Joel, Thatte, Deepashri, Soulain, Anthony, Cooper, Rachel A., Sivaramakrishnan, Anand, Corcoran, Michael F., Greenbaum, Alexandra Z., Gull, Theodore R., Han, Yinuo, Jones, Olivia C., Madura, Thomas, Moffat, Anthony F. J., Morris, Mark R., Onaka, Takashi, Russell, Christopher M. P., Richardson, Noel D., Smith, Nathan, Tuthill, Peter, Volk, Kevin, Weigelt, Gerd, Williams, Peredur M.
We present infrared aperture masking interferometry (AMI) observations of newly formed dust from the colliding winds of the massive binary system Wolf-Rayet (WR) 137 with JWST using the Near Infrared Imager and Slitless Spectrograph (NIRISS). NIRISS
Externí odkaz:
http://arxiv.org/abs/2311.15948
Autor:
Isbell, Jacob W., Pott, Jörg-Uwe, Meisenheimer, Klaus, Stalevski, Marko, Tristram, Konrad R. W., Leftley, James, Asmus, Daniel, Weigelt, Gerd, Rosas, Violeta Gámez, Petrov, Romain, Jaffe, Walter, Hofmann, Karl-Heinz, Henning, Thomas, Lopez, Bruno
In this paper we present the first-ever $L$- and $M$-band interferometric observations of Circinus, building upon a recent $N$-band analysis. We used these observations to reconstruct images and fit Gaussian models to the $L$ and $M$ bands. Our findi
Externí odkaz:
http://arxiv.org/abs/2309.07613
Autor:
Peatt, Megan J., Richardson, Noel D., Williams, Peredur M., Karnath, Nicole, Shenavrin, Victor I., Lau, Ryan M., Moffat, Anthony F. J., Weigelt, Gerd
WR 137 (HD 192641) is a binary system consisting of a carbon-rich Wolf-Rayet star and an Oe companion star in a 13-year orbit. Near periastron, the winds of the two stars collide and form carbonaceous dust. We obtained three mid-infrared grism spectr
Externí odkaz:
http://arxiv.org/abs/2308.11798
Autor:
Lau, Ryan M., Wang, Jason, Hankins, Matthew J., Currie, Thayne, Deo, Vincent, Endo, Izumi, Guyon, Olivier, Han, Yinuo, Jones, Anthony P., Jovanovic, Nemanja, Lozi, Julien, Moffat, Anthony F. J., Onaka, Takashi, Ruane, Garreth, Sander, Andreas A. C., Tinyanont, Samaporn, Tuthill, Peter G., Weigelt, Gerd, Williams, Peredur M., Vievard, Sebastien
Wolf-Rayet (WR) 140 is the archetypal periodic dust-forming colliding-wind binary that hosts a carbon-rich WR (WC) star and an O-star companion with an orbital period of 7.93 years and an orbital eccentricity of 0.9. Throughout the past several decad
Externí odkaz:
http://arxiv.org/abs/2305.14557