Search Results - "Rich, R. Michael"

Stellar halos in Illustris: probing the histories of Milky Way-mass galaxies by Elias, Lydia M, Sales, Laura V, Creasey, Peter, Cooper, Michael C, Bullock, James S, Rich, R Michael, Hernquist, Lars

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Pristine dwarf galaxy survey – I. A detailed photometric and spectroscopic study of the very metal-poor Draco II satellite by Longeard, Nicolas, Martin, Nicolas, Starkenburg, Else, Ibata, Rodrigo A, Collins, Michelle L M, Geha, Marla, Laevens, Benjamin P M, Rich, R Michael, Aguado, David S, Arentsen, Anke, Carlberg, Raymond G, Côté, Patrick, Hill, Vanessa, Jablonka, Pascale, González Hernández, Jonay I, Navarro, Julio F, Sánchez-Janssen, Rubén, Tolstoy, Eline, Venn, Kim A, Youakim, Kris

“…We present a detailed study of the faint Milky Way satellite Draco II (Dra II) from deep CFHT/MegaCam broad-band g and i photometry and narrow-band…”
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A CHEMICAL CONFIRMATION OF THE FAINT BOÖTES II DWARF SPHEROIDAL GALAXY by Koch, Andreas, Rich, R Michael

“…We present a chemical abundance study of the brightest confirmed member star of the ultra-faint dwarf galaxy Bootes II from Keck/HIRES high-resolution…”
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The Ages of Galactic Bulge Stars with Realistic Uncertainties by Joyce, Meridith, Johnson, Christian I., Marchetti, Tommaso, Rich, R. Michael, Simion, Iulia, Bourke, John

“…Abstract Using modern isochrones with customized physics and carefully considered statistical techniques, we recompute the age distribution for a sample of 91…”
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THE PAndAS VIEW OF THE ANDROMEDA SATELLITE SYSTEM. II. DETAILED PROPERTIES OF 23 M31 DWARF SPHEROIDAL GALAXIES by Martin, Nicolas F., Ibata, Rodrigo A., Lewis, Geraint F., McConnachie, Alan, Babul, Arif, Bate, Nicholas F., Bernard, Edouard, Chapman, Scott C., Collins, Michelle M. L., Conn, Anthony R., Crnojevi, Denija, Fardal, Mark A., Ferguson, Annette M. N., Irwin, Michael, Mackey, A. Dougal, McMonigal, Brendan, Navarro, Julio F., Rich, R. Michael

“…ABSTRACT We present a comprehensive analysis of the structural properties and luminosities of the 23 dwarf spheroidal galaxies that fall within the footprint…”
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The haloes and environments of nearby galaxies (HERON) – I. Imaging, sample characteristics, and envelope diameters by Rich, R Michael, Mosenkov, Aleksandr, Lee-Saunders, Henry, Koch, Andreas, Kormendy, John, Kennefick, Julia, Brosch, Noah, Sales, Laura, Bullock, James, Burkert, Andreas, Collins, Michelle, Cooper, Michael, Fusco, Michael, Reitzel, David, Thilker, David, Milewski, Dave G, Elias, Lydia, Saade, M L, De Groot, Laura

“…ABSTRACT We use a dedicated 0.7-m telescope to image the haloes of 119 galaxies in the Local Volume to μr ∼ 28–30 mag arcsec−2. The sample is primarily from…”
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The Pristine Dwarf-Galaxy survey – II. In-depth observational study of the faint Milky Way satellite Sagittarius II by Longeard, Nicolas, Martin, Nicolas, Starkenburg, Else, Ibata, Rodrigo A, Collins, Michelle L M, Laevens, Benjamin P M, Mackey, Dougal, Rich, R Michael, Aguado, David S, Arentsen, Anke, Jablonka, Pascale, González Hernández, Jonay I, Navarro, Julio F, Sánchez-Janssen, Rubén

“…ABSTRACT We present an extensive study of the Sagittarius II (Sgr II) stellar system using MegaCam g and i photometry, narrow-band, metallicity-sensitive…”
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A vast, thin plane of corotating dwarf galaxies orbiting the Andromeda galaxy by Ibata, Rodrigo A., Lewis, Geraint F., Conn, Anthony R., Irwin, Michael J., McConnachie, Alan W., Chapman, Scott C., Collins, Michelle L., Fardal, Mark, Ferguson, Annette M. N., Ibata, Neil G., Mackey, A. Dougal, Martin, Nicolas F., Navarro, Julio, Rich, R. Michael, Valls-Gabaud, David, Widrow, Lawrence M.

“…About half of the satellites in the Andromeda galaxy (M 31), all with the same sense of rotation about their host, form a planar subgroup that is extremely…”
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First Evidence of Multi-iron Subpopulations in the Bulge Fossil Fragment Candidate Liller 1 by Crociati, Chiara, Valenti, Elena, Ferraro, Francesco R., Pallanca, Cristina, Lanzoni, Barbara, Cadelano, Mario, Fanelli, Cristiano, Origlia, Livia, Leanza, Silvia, Dalessandro, Emanuele, Mucciarelli, Alessio, Rich, R. Michael

“…Abstract In the context of a project aimed at characterizing the properties of the so-called Bulge Fossil Fragments (the fossil remnants of the bulge formation…”
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COLLISION TOMOGRAPHY: PHYSICAL PROPERTIES OF POSSIBLE PROGENITORS OF THE ANDROMEDA STELLAR STREAM by Miki, Yohei, Mori, Masao, Rich, R. Michael

“…ABSTRACT To unveil a progenitor of the Andromeda Giant Stellar Stream, we investigate the interaction between an accreting satellite galaxy and the Andromeda…”
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The Hubble Space Telescope Survey of M31 Satellite Galaxies. I. RR Lyrae–based Distances and Refined 3D Geometric Structure by Savino, Alessandro, Weisz, Daniel R., Skillman, Evan D., Dolphin, Andrew, Kallivayalil, Nitya, Wetzel, Andrew, Anderson, Jay, Besla, Gurtina, Boylan-Kolchin, Michael, Bullock, James S., Cole, Andrew A., Collins, Michelle L. M., Cooper, M. C., Deason, Alis J., Dotter, Aaron L., Fardal, Mark, Ferguson, Annette M. N., Fritz, Tobias K., Geha, Marla C., Gilbert, Karoline M., Guhathakurta, Puragra, Ibata, Rodrigo, Irwin, Michael J., Jeon, Myoungwon, Kirby, Evan, Lewis, Geraint F., Mackey, Dougal, Majewski, Steven R., Martin, Nicolas, McConnachie, Alan, Patel, Ekta, Rich, R. Michael, Simon, Joshua D., Sohn, Sangmo Tony, Tollerud, Erik J., van der Marel, Roeland P.

“…Abstract We measure homogeneous distances to M31 and 38 associated stellar systems (−16.8 ≤ M V ≤ −6.0), using time-series observations of RR Lyrae stars taken…”
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Modeling the Chemical Enrichment History of the Bulge Fossil Fragment Terzan 5 by Romano, Donatella, Ferraro, Francesco R., Origlia, Livia, Zwart, Simon Portegies, Lanzoni, Barbara, Crociati, Chiara, Massari, Davide, Dalessandro, Emanuele, Mucciarelli, Alessio, Rich, R. Michael, Calura, Francesco, Matteucci, Francesca

“…Abstract Terzan 5 is a heavily obscured stellar system located in the inner Galaxy. It has been postulated to be a stellar relic, a bulge fossil fragment…”
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Composition of Giants 1° North of the Galactic Center: Detailed Abundance Trends for 21 Elements Observed with IGRINS by Nandakumar, Govind, Ryde, Nils, Mace, Gregory, Kaplan, Kyle F., Nieuwmunster, Niels, Jaffe, Daniel, Rich, R. Michael, Schultheis, Mathias, Agertz, Oscar, Andersson, Eric, Sneden, Christopher, Strickland, Emily, Thorsbro, Brian

“…Abstract We report the first high-resolution, detailed abundances of 21 elements for giants in the Galactic bulge/bar within 1° of the Galactic plane, where…”
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Alpha Enhancement and the Metallicity Distribution Function of Plaut's Window by Johnson, Christian I, Michael Rich, R, Fulbright, Jon P, Valenti, Elena, McWilliam, Andrew

“…We present Fe, Si, and Ca abundances for 61 giants in Plaut's window (l = --1?, b = --85) and Fe abundances for an additional 31 giants in a second, nearby…”
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Elemental Abundances in And XIX from Coadded Spectra by Cullinane, L. R., Gilbert, Karoline M., Escala, Ivanna, Wojno, J. Leigh, Kirby, Evan N., Kvasova, Kateryna A., Tollerud, Erik, Collins, Michelle L. M., Rich, R. Michael

“…Abstract With a luminosity similar to that of Milky Way dwarf spheroidal systems like Sextans, but a spatial extent similar to that of ultra-diffuse galaxies,…”
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Tilted outer and inner structures in edge-on galaxies? by Mosenkov, Aleksandr V, Smirnov, Anton A, Sil’chenko, Olga K, Rich, R Michael, Reshetnikov, Vladimir P, Kormendy, John

“…ABSTRACT Tilted and warped discs inside tilted dark matter haloes are predicted from numerical and semi-analytical studies. In this paper, we use deep imaging…”
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Fast radio bursts: the observational case for a Galactic origin by Maoz, Dan, Loeb, Abraham, Shvartzvald, Yossi, Sitek, Monika, Engel, Michael, Kiefer, Flavien, Kiraga, Marcin, Levi, Amir, Mazeh, Tsevi, Pawlak, Michal, Rich, R Michael, Tal-Or, Lev, Wyrzykowski, Lukasz

“…There are by now ten published detections of fast radio bursts (FRBs) -- single bright GHz-band millisecond pulses of unknown origin. Proposed explanations…”
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Radio Jet Feedback on the Inner Disk of Virgo Spiral Galaxy Messier 58 by Ogle, Patrick M., López, Iván E., Reynaldi, Victoria, Togi, Aditya, Rich, R. Michael, Román, Javier, Caceres, Osmin, Li, Zhuofu (Chester), Donnelly, Grant, Smith, J. D. T., Appleton, Philip N., Lanz, Lauranne

“…Abstract Spitzer spectral maps reveal a disk of highly luminous, warm (>150 K) H 2 in the center of the massive spiral galaxy Messier 58, which hosts a…”
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The Masses of Population II White Dwarfs by Kalirai, Jason S, Davis, D. Saul, Richer, Harvey B, Bergeron, P, Catelan, Marcio, Hansen, Brad M. S, Michael Rich, R

“…Globular star clusters are among the first stellar populations to have formed in the Milky Way, and thus only a small sliver of their initial spectrum of…”
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A rogues gallery of Andromeda’s dwarf galaxies – II. Precise distances to 17 faint satellites by Weisz, Daniel R, Dolphin, Andrew E, Martin, Nicolas F, Albers, Saundra M, Collins, Michelle L M, Ferguson, Annette M N, Lewis, Geraint F, Mackey, A Dougal, McConnachie, Alan, Rich, R Michael, Skillman, Evan D

“…ABSTRACT We present new horizontal branch (HB) distance measurements to 17 of the faintest known M31 satellites (−6 ≲ MV ≲ −13) based on deep Hubble Space…”
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