Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Peterken, Thomas"'
Autor:
Greener, Michael J., Aragón-Salamanca, Alfonso, Merrifield, Michael, Peterken, Thomas, Sazonova, Elizaveta, Haggar, Roan, Bizyaev, Dmitry, Brownstein, Joel R., Lane, Richard R., Pan, Kaike
We investigate archaeologically how the metallicity in both stellar and gaseous components of spiral galaxies of differing masses evolve with time, using data from the SDSS-IV MaNGA survey. For the stellar component, we can measure this evolution dir
Externí odkaz:
http://arxiv.org/abs/2208.09008
Autor:
Krishnarao, Dhanesh, Pace, Zachary J., D'Onghia, Elena, Aguerri, Alfonso L., McClure, Rachel L., Peterken, Thomas, Fernandez-Trincado, Jose G., Merrifield, Michael, Masters, Karen L., Garma-Oehmichen, Luis, Boardman, Nicholas Fraser, Bershady, Matthew, Drory, Niv, Lane, Richard R.
Bars may induce morphological features, such as rings, through their resonances. Previous studies suggested that the presence of 'dark-gaps', or regions of a galaxy where the difference between the surface brightness along the bar major axis and alon
Externí odkaz:
http://arxiv.org/abs/2203.05578
Autor:
Peterken, Thomas, Aragón-Salamanca, Alfonso, Merrifield, Michael, Avila-Reese, Vladimir, Boardman, Nicholas F., Sánchez, Helena Domínguez, Bizyaev, Dmitry, Drory, Niv, Pan, Kaike, Brownstein, Joel R.
By fitting stellar populations to SDSS-IV MaNGA survey observations of ~7000 suitably-weighted individual galaxies, we reconstruct the star-formation history of the Universe, which we find to be in reasonable agreement with previous studies. Dividing
Externí odkaz:
http://arxiv.org/abs/2101.11945
Autor:
Greener, Michael J., Merrifield, Michael, Aragón-Salamanca, Alfonso, Peterken, Thomas, Andrews, Brett, Lane, Richard R.
The levels of heavy elements in stars are the product of enhancement by previous stellar generations, and the distribution of this metallicity among the population contains clues to the process by which a galaxy formed. Most famously, the "G-dwarf pr
Externí odkaz:
http://arxiv.org/abs/2101.11022
Autor:
Peterken, Thomas, Merrifield, Michael, Aragón-Salamanca, Alfonso, Avila-Reese, Vladimir, Boardman, Nicholas F., Drory, Niv, Lane, Richard R.
It remains an open question as to how long ago the morphology that we see in a present-day galaxy was typically imprinted. Studies of galaxy populations at different redshifts reveal that the balance of morphologies has changed over time, but such sn
Externí odkaz:
http://arxiv.org/abs/2010.15213
Autor:
Fraser-McKelvie, Amelia, Merrifield, Michael, Aragón-Salamanca, Alfonso, Peterken, Thomas, Kraljic, Katarina, Masters, Karen, Stark, David, Fragkoudi, Francesca, Smethurst, Rebecca, Boardman, Nicholas Fraser, Drory, Niv, Lane, Richard R.
Bars are common in low-redshift disk galaxies, and hence quantifying their influence on their host is of importance to the field of galaxy evolution. We determine the stellar populations and star formation histories of 245 barred galaxies from the Ma
Externí odkaz:
http://arxiv.org/abs/2009.07859
Autor:
Peterken, Thomas, Merrifield, Michael, Aragón-Salamanca, Alfonso, Fraser-McKelvie, Amelia, Avila-Reese, Vladimir, Riffel, Rogério, Knapen, Johan, Drory, Niv
We perform a "fossil record" analysis for ~800 low-redshift spiral galaxies, using STARLIGHT applied to integral field spectroscopic observations from the SDSS-IV MaNGA survey to obtain fully spatially-resolved high-resolution star formation historie
Externí odkaz:
http://arxiv.org/abs/2005.03012
Autor:
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
Dust attenuation in star-forming spiral galaxies affects stars and gas in different ways due to local variations in dust geometry. We present spatially resolved measurements of dust attenuation for a sample of 232 such star-forming spiral galaxies, d
Externí odkaz:
http://arxiv.org/abs/2005.02772
Autor:
Peterken, Thomas, Fraser-McKelvie, Amelia, Aragón-Salamanca, Alfonso, Merrifield, Michael, Kraljic, Katarina, Knapen, Johan H, Riffel, Rogério, Brownstein, Joel, Drory, Niv
Spectra of galaxies contain a wealth of information about the stellar populations from which they are made. With integral-field unit (IFU) surveys, such data can be used to map out stellar population properties across the face of a galaxy, allowing o
Externí odkaz:
http://arxiv.org/abs/1908.05013
Autor:
Fraser-McKelvie, Amelia, Merrifield, Michael, Aragón-Salamanca, Alfonso, Peterken, Thomas, Masters, Karen, Krawczyk, Coleman, Andrews, Brett, Knapen, Johan H., Kruk, Sandor, Schaefer, Adam, Smethurst, Rebecca, Riffel, Rogério, Brownstein, Joel, Drory, Niv
Bars in galaxies are thought to stimulate both inflow of material and radial mixing along them. Observational evidence for this mixing has been inconclusive so far however, limiting the evaluation of the impact of bars on galaxy evolution. We now use
Externí odkaz:
http://arxiv.org/abs/1906.00643