Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Noel D Richardson"'
Autor:
Noel D. Richardson, Gail H. Schaefer, Jan J. Eldridge, Rebecca Spejcher, Amanda Holdsworth, Ryan M. Lau, John D. Monnier, Anthony F. J. Moffat, Gerd Weigelt, Peredur M. Williams, Stefan Kraus, Jean-Baptiste Le Bouquin, Narsireddy Anugu, Sorabh Chhabra, Isabelle Codron, Jacob Ennis, Tyler Gardner, Mayra Gutierrez, Noura Ibrahim, Aaron Labdon, Cyprien Lanthermann, Benjamin R. Setterholm
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 78 (2024)
Classical Wolf–Rayet (W-R) 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 ar
Externí odkaz:
https://doaj.org/article/d7bd2edd45af40cb8d65e5c6d10efcab
Autor:
Noel D. Richardson, Andrea R. Daly, Peredur M. Williams, Grant M. Hill, Victor I. Shenavrin, Izumi Endo, André-Nicolas Chené, Nicole Karnath, Ryan M. Lau, Anthony F. J. Moffat, Gerd Weigelt
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 2, p 140 (2024)
Several long-period binaries with a carbon-rich Wolf–Rayet star and an OB 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 t
Externí odkaz:
https://doaj.org/article/338b8146e6c74513954adac9c77c9d17
Autor:
Ryan M. Lau, Matthew J. Hankins, Joel Sanchez-Bermudez, Deepashri Thatte, Anthony Soulain, Rachel A. Cooper, Anand Sivaramakrishnan, Michael F. Corcoran, Alexandra Z. Greenbaum, Theodore R. Gull, Yinuo Han, Olivia C. Jones, Thomas Madura, Anthony F. J. Moffat, Mark R. Morris, Takashi Onaka, Christopher M. P. Russell, Noel D. Richardson, Nathan Smith, Peter Tuthill, Kevin Volk, Gerd Weigelt, Peredur M. Williams
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 127 (2024)
We present infrared aperture-masking interferometry (AMI) observations of newly formed dust from the colliding winds of the massive binary Wolf–Rayet system WR 137 with JWST using the Near Infrared Imager and Slitless Spectrograph (NIRISS). NIRISS
Externí odkaz:
https://doaj.org/article/cf35d06a692047969b2b5e0a18f7f0db
Autor:
Augusto Damineli, Noel D. Richardson, Felipe Navarete, Theodore. R. Gull, Eduardo Fernández-Lajús, Anthony F. J. Moffat, Desmond J. Hillier, Gerd Weigelt, Michael F. Corcoran
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 114 (2024)
Changes in the flux and spectrum of Eta Carinae ( η Car) 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 app
Externí odkaz:
https://doaj.org/article/1523da3e4d7f47cf8f1b7124246d8387
Autor:
Clarissa M. Pavao, Noel D. Richardson, Jonathan Labadie-Bartz, Herbert Pablo, André-Nicolas Chené
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 131 (2023)
Be X-ray binaries (Be XRBs) are high-mass X-ray binaries, with a neutron star or black hole orbiting and accreting material from a nonsupergiant B-star that is rotating at a near critical rate. These objects are prime targets to understand past binar
Externí odkaz:
https://doaj.org/article/2e1c838bc9b84b74a56d25f4fe022bb2
Autor:
Megan J. Peatt, Noel D. Richardson, Peredur M. Williams, Nicole Karnath, Victor I. Shenavrin, Ryan M. Lau, Anthony F. J. Moffat, Gerd Weigelt
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 109 (2023)
WR 137 (HD 192641) is a binary system consisting of a carbon-rich Wolf–Rayet (W-R) star and an Oe companion star in a 13 yr orbit. Near periastron, the winds of the two stars collide and form carbonaceous dust. We obtained three mid-infrared grism
Externí odkaz:
https://doaj.org/article/a9eb931c1d164effb43c1ab385002cef
Autor:
Theodore R. Gull, Henrik Hartman, Mairan Teodoro, D. John Hillier, Michael F. Corcoran, Augusto Damineli, Kenji Hamaguchi, Thomas Madura, Anthony F. J. Moffat, Patrick Morris, Krister Nielsen, Noel D. Richardson, Ian R. Stevens, Gerd Weigelt
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 104 (2023)
Previous Hubble Space Telescope (HST)/Space Telescope Imaging Spectrograph (STIS) longslit observations of Eta Carinae ( η Car) identified numerous absorption features in both the stellar spectrum, and in the adjacent nebular spectra, along our line
Externí odkaz:
https://doaj.org/article/f1f97356007f4faca98977458bdd4931
Autor:
Augusto Damineli, Desmond J. Hillier, Felipe Navarete, Anthony F. J. Moffat, Gerd Weigelt, Michael F. Corcoran, Theodore. R. Gull, Noel D. Richardson, Peter Ho, Thomas I. Madura, David Espinoza-Galeas, Henrik Hartman, Patrick Morris, Connor S. Pickett, Ian R. Stevens, Christopher M. P. Russell, Kenji Hamaguchi, Francisco J. Jablonski, Mairan Teodoro, Padric McGee, Paulo Cacella, Bernard Heathcote, Ken M. Harrison, Mark Johnston, Terry Bohlsen, Giorgio Di Scala
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 65 (2023)
Eta Carinae ( η 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 Fe ii and H i emission-line
Externí odkaz:
https://doaj.org/article/86e9a73b56804e269749efd027e693c9
Autor:
Emily Strawn, Noel D Richardson, Anthony F J Moffat, Nour Ibrahim, Alexis Lane, Connor Pickett, André-Nicolas Chené, Michael F Corcoran, Augusto Damineli, Theodore R Gull, D John Hillier, Patrick Morris, Herbert Pablo, Joshua D Thomas, Ian R Stevens, Mairan Teodoro, Gerd Weigelt
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac70a651366712ecb424370d47e45b3b
https://resolver.caltech.edu/CaltechAUTHORS:20230314-845495900.63
https://resolver.caltech.edu/CaltechAUTHORS:20230314-845495900.63
Autor:
Noel D. Richardson, Clarissa M. Pavao, Jan J. Eldridge, Herbert Pablo, André-Nicolas Chené, Peter Wysocki, Douglas R. Gies, George Younes, Jeremy Hare
Ultra-stripped supernovae are different from other terminal explosions of massive stars, as they show little or no ejecta from the actual supernova event. They are thought to occur in massive binary systems after the exploding star has lost its surfa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df033bb43473f6fce2b9e03f0a6c6842