Search Results - "Merrifield, Michael"

The origin of S0s in clusters: evidence from the bulge and disc star formation histories by Johnston, Evelyn J., Aragón-Salamanca, Alfonso, Merrifield, Michael R.

“…The individual star formation histories of bulges and discs of lenticular (S0) galaxies can provide information on the processes involved in the quenching of…”
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SDSS-IV MaNGA: spatially resolved dust attenuation in spiral galaxies by Greener, Michael J, Aragón-Salamanca, Alfonso, Merrifield, Michael R, Peterken, Thomas G, Fraser-McKelvie, Amelia, Masters, Karen L, Krawczyk, Coleman M, Boardman, Nicholas F, Boquien, Médéric, Andrews, Brett H, Brinkmann, Jonathan, Drory, Niv

“…ABSTRACT Dust attenuation in star-forming spiral galaxies affects stars and gas in different ways due to local variations in dust geometry. We present…”
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SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) by Johnston, Evelyn J, Haeu beta ler, Boris, Aragon-Salamanca, Alfonso, Merrifield, Michael R, Bamford, Steven, Bershady, Matthew A, Bundy, Kevin, Drory, Niv, Fu, Hai, Law, David, Nitschelm, Christian, Thomas, Daniel, Lopes, Alexandre Roman, Wake, David, Yan, Renbin

“…With the availability of large integral field unit (IFU) spectral surveys of nearby galaxies, there is now the potential to extract spectral information from…”
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Disentangling the stellar populations in the counter-rotating disc galaxy NGC 4550 by Johnston, Evelyn J., Merrifield, Michael R., Aragón-Salamanca, Alfonso, Cappellari, Michele

“…In order to try and understand its origins, we present high-quality long-slit spectral observations of the counter-rotating stellar discs in the strange S0…”
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The growth of the central region by acquisition of counterrotating gas in star-forming galaxies by Chen, Yan-Mei, Shi, Yong, Tremonti, Christy A., Bershady, Matt, Merrifield, Michael, Emsellem, Eric, Jin, Yi-Fei, Huang, Song, Fu, Hai, Wake, David A., Bundy, Kevin, Stark, David, Lin, Lihwai, Argudo-Fernandez, Maria, Bergmann, Thaisa Storchi, Bizyaev, Dmitry, Brownstein, Joel, Bureau, Martin, Chisholm, John, Drory, Niv, Guo, Qi, Hao, Lei, Hu, Jian, Li, Cheng, Li, Ran, Lopes, Alexandre Roman, Pan, Kai-Ke, Riffel, Rogemar A., Thomas, Daniel, Wang, Lan, Westfall, Kyle, Yan, Ren-Bin

“…Galaxies grow through both internal and external processes. In about 10% of nearby red galaxies with little star formation, gas and stars are counter-rotating,…”
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A direct test of density wave theory in a grand-design spiral galaxy by Peterken, Thomas G., Merrifield, Michael R., Aragón-Salamanca, Alfonso, Drory, Niv, Krawczyk, Coleman M., Masters, Karen L., Weijmans, Anne-Marie, Westfall, Kyle B.

“…The exact nature of the arms of spiral galaxies is still an open question 1 . It has been widely assumed that spiral arms in galaxies with two distinct…”
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Caught in the act: cluster ‘k+a’ galaxies as a link between spirals and S0s by Rodríguez Del Pino, Bruno, Bamford, Steven P., Aragón-Salamanca, Alfonso, Milvang-Jensen, Bo, Merrifield, Michael R., Balcells, Marc

“…We use integral field spectroscopy of 13 disc galaxies in the cluster AC114 at z ∼ 0.31 in an attempt to disentangle the physical processes responsible for the…”
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The stellar kinematics and populations of boxy bulges: cylindrical rotation and vertical gradients by Williams, Michael J., Zamojski, Michel A., Bureau, Martin, Kuntschner, Harald, Merrifield, Michael R., Tim de Zeeuw, P., Kuijken, Konrad

“…Boxy and peanut-shaped bulges are seen in about half of edge-on disc galaxies. Comparisons of the photometry and major-axis gas and stellar kinematics of these…”
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Radial Dependence of the Pattern Speed of M51 by Meidt, Sharon E, Rand, Richard J, Merrifield, Michael R, Shetty, Rahul, Vogel, Stuart N

“…The grand-design spiral galaxy M51 has long been a crucial target for theories of spiral structure. Studies of this iconic spiral can address the question of…”
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SDSS-IV MaNGA: A SERENDIPITOUS OBSERVATION OF A POTENTIAL GAS ACCRETION EVENT by Cheung, Edmond, Stark, David V., Huang, Song, Rubin, Kate H. R., Lin, Lihwai, Tremonti, Christy, Zhang, Kai, Yan, Renbin, Bizyaev, Dmitry, Boquien, Médéric, Brownstein, Joel R., Drory, Niv, Gelfand, Joseph D., Knapen, Johan H., Maiolino, Roberto, Malanushenko, Olena, Masters, Karen L., Merrifield, Michael R., Pace, Zach, Pan, Kaike, Riffel, Rogemar A., Roman-Lopes, Alexandre, Rujopakarn, Wiphu, Schneider, Donald P., Stott, John P., Thomas, Daniel, Weijmans, Anne-Marie

“…ABSTRACT The nature of warm, ionized gas outside of galaxies may illuminate several key galaxy evolutionary processes. A serendipitous observation by the MaNGA…”
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A Dearth of Dark Matter in Ordinary Elliptical Galaxies by Romanowsky, Aaron J., Douglas, Nigel G., Arnaboldi, Magda, Kuijken, Konrad, Merrifield, Michael R., Napolitano, Nicola R., Capaccioli, Massimo, Freeman, Kenneth C.

“…The kinematics of the outer parts of three intermediate-luminosity elliptical galaxies were studied with the Planetary Nebula Spectrograph. The galaxies'…”
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The SLUGGS survey: chromodynamical modelling of the lenticular galaxy NGC 1023 by Cortesi, Arianna, Chies-Santos, Ana L, Pota, Vincenzo, Foster, Caroline, Coccato, Lodovico, de Oliveira, Claudia Mendes, bes, Duncan A, Merrifield, Michael M, Bamford, Steven P, Romanowsky, Aaron J, Brodie, Jean P, Kartha, Sreeja S, Alabi, Adebusola B, Proctor, Robert N, Almeida, Andres

“…Globular clusters (GCs) can be considered discrete, long-lived, dynamical tracers that retain crucial information about the assembly history of their parent…”
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Radially extended kinematics in the S0 galaxy NGC 2768 from planetary nebulae, globular clusters and starlight by Forbes, Duncan A., Cortesi, Arianna, Pota, Vincenzo, Foster, Caroline, Romanowsky, Aaron J., Merrifield, Michael R., Brodie, Jean P., Strader, Jay, Coccato, Lodovico, Napolitano, Nicola

“…Abstract There are only a few tracers available to probe the kinematics of individual early-type galaxies beyond one effective radius. Here we directly compare…”
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Uncovering the Origins of Spiral Structure by Measuring Radial Variation in Pattern Speeds by Meidt, Sharon E, Rand, Richard J, Merrifield, Michael R

“…Current theories of spiral and bar structure predict a variety of pattern speed behaviors, calling for detailed, direct measurement of the radial variation of…”
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P-MaNGA: GRADIENTS IN RECENT STAR FORMATION HISTORIES AS DIAGNOSTICS FOR GALAXY GROWTH AND DEATH by Li, Cheng, Wang, Enci, Lin, Lin, Bershady, Matthew A., Bundy, Kevin, Tremonti, Christy A., Xiao, Ting, Yan, Renbin, Bizyaev, Dmitry, Blanton, Michael, Cales, Sabrina, Cherinka, Brian, Cheung, Edmond, Drory, Niv, Emsellem, Eric, Fu, Hai, Gelfand, Joseph, Law, David R., Lin, Lihwai, MacDonald, Nick, Maraston, Claudia, Masters, Karen L., Merrifield, Michael R., Pan, Kaike, Sánchez, S. F., Schneider, Donald P., Thomas, Daniel, Wake, David, Wang, Lixin, Weijmans, Anne-Marie, Wilkinson, David, Yoachim, Peter, Zhang, Kai, Zheng, Tiantian

“…ABSTRACT We present an analysis of the data produced by the MaNGA prototype run (P-MaNGA), aiming to test how the radial gradients in recent star formation…”
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Tests of the Radial Tremaine-Weinberg Method by Meidt, Sharon E, Rand, Richard J, Merrifield, Michael R, Debattista, Victor P, Shen, Juntai

“…At the intersection of galactic dynamics, evolution, and global structure, issues such as the relation between bars and spirals and the persistence of spiral…”
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Ultrafine dark matter structure in the solar neighbourhood by Fantin, Daniele S. M., Green, Anne M., Merrifield, Michael R.

“…Direct detection of dark matter on the Earth depends crucially on its density and its velocity distribution on a milliparsec scale. Conventional N-body…”
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Telescope time without tears: a distributed approach to peer review by Merrifield, Michael R, Saari, Donald G

“…The procedure for allocating time on telescopes is horribly onerous for those unfortunate astronomers who serve on the committees that administer the process;…”
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Luminous and dark matter in the Milky Way by Olling, Rob P., Merrifield, Michael R.

“…Axisymmetric models of the Milky Way exhibit strong interrelations between the Galactic constants [the Sun's distance to the Galactic Centre (R0), and the…”
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Dissecting Halo Components in IFU Data by Merrifield, Michael, Johnston, Evelyn, Aragón-Salamanca, Alfonso

“…While most astronomers are now familiar with tools to decompose images into multiple components such as disks, bulges, and halos, the equivalent techniques for…”
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