Výsledky vyhledávání - "Stelea, Ioana"

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The Milky Way's rowdy neighbours: The effects of the Large Magellanic Cloud and Sagittarius Dwarf on the Milky Way Disc

Autor: Stelea, Ioana A., Hunt, Jason A. S., Johnston, Kathryn V.

The Milky Way (MW) is a barred spiral galaxy shaped by tidal interactions with its satellites. The Large Magellanic Cloud (LMC) and the Sagittarius Dwarf galaxy (Sgr) are the dominant influences at the present day. This paper presents a suite of four

Externí odkaz: http://arxiv.org/abs/2407.12095

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Chemical Cartography of the Sagittarius Stream with Gaia

Autor: Cunningham, Emily C., Hunt, Jason A. S., Price-Whelan, Adrian M., Johnston, Kathryn V., Ness, Melissa K., Lu, Yuxi, Escala, Ivanna, Stelea, Ioana A.

The stellar stream connected to the Sagittarius (Sgr) dwarf galaxy is the most massive tidal stream that has been mapped in the Galaxy, and is the dominant contributor to the outer stellar halo of the Milky Way. We present metallicity maps of the Sgr

Externí odkaz: http://arxiv.org/abs/2307.08730

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The Circumgalactic H$\alpha$ Spectrograph (CH$\alpha$S) I. Design, Engineering, and Early Commissioning

Autor: Melso, Nicole, Schiminovich, David, Smiley, Brian, Ong, Hwei Ru, Santiago, Bárbara Cruvinel, Sitaram, Meghna, Aleman, Ignacio Cevallos, Graber, Sarah, Murillo, Marisa, Rosenthal, Marni, Stelea, Ioana

The Circumgalactic H$\alpha$ Spectrograph (CH$\alpha$S) is a ground-based optical integral field spectrograph designed to detect ultra-faint extended emission from diffuse ionized gas in the nearby universe. CH$\alpha$S is particularly well suited fo

Externí odkaz: http://arxiv.org/abs/2209.14999

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Resolving local and global kinematic signatures of satellite mergers with billion particle simulations

Autor: Hunt, Jason A. S., Stelea, Ioana A., Johnston, Kathryn V., Gandhi, Suroor S., Laporte, Chervin F. P., Bedorf, Jeroen

In this work we present two new $\sim10^9$ particle self-consistent simulations of the merger of a Sagittarius-like dwarf galaxy with a Milky Way-like disc galaxy. One model is a violent merger creating a thick disc, and a Gaia-Enceladus/Sausage like

Externí odkaz: http://arxiv.org/abs/2107.06294

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