High-resolution Dayside Spectroscopy of WASP-189 b: Detection of Iron during the GHOST/Gemini South System Verification Run

Autor: Emily K. Deibert, Adam B. Langeveld, Mitchell E. Young, Laura Flagg, Jake D. Turner, Peter C. B. Smith, Ernst J. W. de Mooij, Ray Jayawardhana, Kristin Chiboucas, Roberto Gamen, Christian R. Hayes, Jeong-Eun Heo, Miji Jeong, Venu Kalari, Eder Martioli, Vinicius M. Placco, Siyi Xu, Ruben Diaz, Manuel Gomez-Jimenez, Carlos Quiroz, Roque Ruiz-Carmona, Chris Simpson, Alan W. McConnachie, John Pazder, Gregory Burley, Michael Ireland, Fletcher Waller, Trystyn A. M. Berg, J. Gordon Robertson, David O. Jones, Kathleen Labrie, Susan Ridgway, Joanna Thomas-Osip

Publikováno v: The Astronomical Journal, Vol 168, Iss 4, p 148 (2024)

With high equilibrium temperatures and tidally locked rotation, ultra-hot Jupiters (UHJs) are unique laboratories within which to probe extreme atmospheric physics and chemistry. In this paper, we present high-resolution dayside spectroscopy of the U

Externí odkaz: https://doaj.org/article/21dce184a517489aa39b4dbb9302538f

The Discovery of the Faintest Known Milky Way Satellite Using UNIONS

Autor: Simon E. T. Smith, William Cerny, Christian R. Hayes, Federico Sestito, Jaclyn Jensen, Alan W. McConnachie, Marla Geha, Julio F. Navarro, Ting S. Li, Jean-Charles Cuillandre, Raphaël Errani, Ken Chambers, Stephen Gwyn, Francois Hammer, Michael J. Hudson, Eugene Magnier, Nicolas Martin

Publikováno v: The Astrophysical Journal, Vol 961, Iss 1, p 92 (2024)

We present the discovery of Ursa Major III/UNIONS 1, the least luminous known satellite of the Milky Way, which is estimated to have an absolute V -band magnitude of $+{2.2}_{-0.3}^{+0.4}$ mag, equivalent to a total stellar mass of ${16}_{-5}^{+6}$ M

Externí odkaz: https://doaj.org/article/0ac547a12b7d41008e0fb563b60ba654

GHOST Commissioning Science Results: Identifying a New Chemically Peculiar Star in Reticulum II

Autor: Christian R. Hayes, Kim A. Venn, Fletcher Waller, Jaclyn Jensen, Alan W. McConnachie, John Pazder, Federico Sestito, André Anthony, Gabriella Baker, John Bassett, Joao Bento, Trystyn Berg, Gregory Burley, Jurek Brzeski, Scott Case, Edward Chapin, Timothy Chin, Eric Chisholm, Vladimir Churilov, Adam Densmore, Ruben Diaz, Jennifer Dunn, Michael Edgar, Tony Farrell, Veronica Firpo, Joeleff Fitzsimmons, Juan Font-Serra, Javier Fuentes, Colin Ganton, Manuel Gomez-Jimenez, Tim Hardy, David Henderson, Alexis Hill, Brian Hoff, Michael Ireland, Venu Kalari, Neal Kelly, Urs Klauser, Yuriy Kondrat, Kathleen Labrie, Sam Lambert, Lance Luvaul, Jon Lawrence, Jordan Lothrop, G. Scott Macdonald, Slavko Mali, Steve Margheim, Richard McDermid, Helen McGregor, Bryan Miller, Felipe Miranda, Rolf Muller, Jon Nielsen, Ryan Norbury, Oliver Oberdorf, Naveen Pai, Gabriel Perez, Pablo Prado, Ian Price, Carlos Quiroz, Vladimir Reshetov, Gordon Robertson, Roque Ruiz-Carmona, Ricardo Salinas, Kim M. Sebo, Andrew Sheinis, Matthew Shetrone, Keith Shortridge, Katherine Silversides, Karleyne Silva, Chris Simpson, Greg Smith, Kei Szeto, Julia Tims, Eduardo Toro, Cristian Urrutia, Sudharshan Venkatesan, Lewis Waller, Ivan Wevers, Ramunas Wierzbicki, Marc White, Peter Young, Ross Zhelem

Publikováno v: The Astrophysical Journal, Vol 955, Iss 1, p 17 (2023)

The Gemini High-resolution Optical SpecTrograph (GHOST) is the newest high-resolution spectrograph to be developed for a large-aperture telescope, recently deployed and commissioned at the Gemini-South telescope. In this paper, we present the first s

Externí odkaz: https://doaj.org/article/39df6cd428b74f2aae9b6a8b271e4a7f

The PAndAS View of the Andromeda Satellite System. IV. Global Properties

Autor: Amandine Doliva-Dolinsky, Nicolas F. Martin, Zhen Yuan, Alessandro Savino, Daniel R. Weisz, Annette M. N. Ferguson, Rodrigo A. Ibata, Stacy Y. Kim, Geraint F. Lewis, Alan W. McConnachie, Guillaume F. Thomas

Publikováno v: The Astrophysical Journal, Vol 952, Iss 1, p 72 (2023)

We build a statistical framework to infer the global properties of the satellite system of the Andromeda galaxy (M31) from the properties of individual dwarf galaxies located in the Pan-Andromeda Archaelogical Survey (PAndAS) and the previously deter

Externí odkaz: https://doaj.org/article/b2c9a39ffa0a4aaf9a61702c23d08c63

Stars on the edge: Galactic tides and the outskirts of the Sculptor dwarf spheroidal

Autor: Federico Sestito, Joel Roediger, Julio F Navarro, Jaclyn Jensen, Kim A Venn, Simon E T Smith, Christian Hayes, Alan W McConnachie

The formation of "stellar halos" in dwarf galaxies have been discussed in terms of early mergers or Galactic tides, although fluctuations in the gravitational potential due to stellar feedback is also a possible candidate mechanism. A Bayesian algori

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0ece4771936de4828ef8cfcac54cabf