Results 31 to 40 of about 241,989 (335)

Are Stars with Planets Polluted? [PDF]

, 2001
We compare the metallicities of stars with radial velocity planets to the metallicity of a sample of field dwarfs. We confirm recent work indicating that the stars-with-planet sample as a whole is iron rich. However, the lowest mass stars tend to be iron
B. Chaboyer, Gonzalez G., Gonzalez G., Gonzalez G., N. Murray, Santos N. C.   +5 more
core   +3 more sources

Metal Metal

Artilugio, 2023
METAL METAL es una pieza electroacústica creada en 2022. El material sonoro utilizado en la composición fue grabado durante la pandemia mundial de Covid-19. Aprovechando el aislamiento obligatorio, se realizaron sesiones de improvisación rítmica, tímbrica y textural con latas de aluminio. Estas se registraron con un grabador digital Zoom H4.
openaire   +1 more source

The gas metallicity gradient and the star formation activity of disc galaxies [PDF]

, 2015
We study oxygen abundance profiles of the gaseous disc components in simulated galaxies in a hierarchical universe. We analyse the disc metallicity gradients in relation to the stellar masses and star formation rates of the simulated galaxies.
Pedrosa, Susana E., Sillero, Emanuel, Tissera, Patricia B., Vilchez, Jose M.   +3 more
core   +2 more sources

Cluster melting: new, limiting, and liminal phenomena

Advances in Physics: X, 2018
The thermodynamic behaviour of clusters and nanoscale structures is both a challenge to the statistical basis of the theory, and of paramount importance to experiment.
Nicola Gaston
doaj   +1 more source

The Period Distribution of Hot Jupiters Is Not Dependent on Host Star Metallicity

The Astrophysical Journal Letters, 2023
The probability that a Sun-like star has a close-orbiting giant planet (period ≲1 yr) increases with stellar metallicity. Previous work provided evidence that the period distribution of close-orbiting giant planets is also linked to metallicity, hinting ...
Samuel W. Yee, Joshua N. Winn
doaj   +1 more source

The SLUGGS Survey: Calcium Triplet-based Spectroscopic Metallicities for Over 900 Globular Clusters [PDF]

, 2012
Although the colour distribution of globular clusters in massive galaxies is well known to be bimodal, the spectroscopic metallicity distribution has been measured in only a few galaxies.
Aaron J. Romanowsky, Alves-Brito, Armandroff, Arnold, Ashman, Bailin, Barmby, Bassino, Battaglia, Beasley, Blakeslee, Blakeslee, Blom, Blom, Brodie, Brodie, Brodie, Caldwell, Caldwell, Cantiello, Cappellari, Cappellari, Cappellari, Caroline Foster, Carretta, Carretta, Cenarro, Cenarro, Cenarro, Chies-Santos, Chomiuk, Christopher Usher, Cohen, Cohen, Conroy, Côté, Dotter, Duncan A. Forbes, Faber, Faifer, Forbes, Forbes, Forbes, Forbes, Forbes, Foster, Foster, Galleti, Galleti, Geisler, Girardi, Hargis, Harris, Harris, Harris, Harris, Jacob A. Arnold, Jay Strader, Jean P. Brodie, Jordi, Kroupa, Kundu, Kundu, Kuntschner, Larsen, Lee, Lee R. Spitler, Mackey, Maraston, Mei, Mendel, Merrett, Mieske, Miyazaki, Muratov, Nelan, Newman, Oke, Peacock, Peng, Perina, Perina, Pota, Puzia, Raimondo, Rich, Richtler, Romanowsky, Rutledge, Salpeter, Scalo, Schlegel, Schuberth, Sinnott, Skrutskie, Smith, Spitler, Spitler, Spitler, Strader, Strader, Strader, Strader, Taylor, Terlevich, Thomas, Thomas, Thomas, Tonry, Trager, van Dokkum, Vazdekis, Vazdekis, Villegas, Vincenzo Pota, Woodley, Woodley, Worthey, Worthey, Yoon, Yoon, Zinn, Zinn   +122 more
core   +4 more sources

Binary Formation in Star-Forming Clouds with Various Metallicities

, 2008
Cloud evolution for various metallicities is investigated by three-dimensional nested grid simulations, in which the initial ratio of rotational to gravitational energy of the host cloud \beta_0 (=10^-1 - 10^-6) and cloud metallicity Z (=0 - Z_\odot) are
Bate, Bromm, Caselli, Clark, Duquennoy, Goodwin, Komiya, Larson, Lucatello, Machida, Machida, Machida, Masahiro N. Machida, Masunaga, Matsumoto, Omukai, Omukai, Saigo, Saigo, Smith, Suda, Tsuribe, Tsuribe, Umeda, Yoshida   +24 more
core   +1 more source

The Grism Lens-Amplified Survey from Space (GLASS) X. Sub-kpc resolution gas-phase metallicity maps at cosmic noon behind the Hubble Frontier Fields cluster MACS1149.6+2223 [PDF]

, 2016
(Abridged) We combine deep HST grism spectroscopy with a new Bayesian method to derive maps of gas-phase metallicity, nebular dust extinction, and star-formation rate for 10 star-forming galaxies at high redshift ($1 ...
Abramson, Louis E., Brammer, Gabriel B., Fontana, Adriano, Grillo, Claudio, Henry, Alaina L., Huang, Kuang-Han, Jones, Tucker A., Karman, Wouter, Kelly, Patrick L., Malkan, Matthew A., Mason, Charlotte A., Mercurio, Amata, Morishita, Takahiro, Rosati, Piero, Schmidt, Kasper B., Sharon, Keren, Trenti, Michele, Treu, Tommaso, Vulcani, Benedetta, Wang, Xin   +19 more
core   +3 more sources

Metallicity inhomogeneities in local star-forming galaxies as sign of recent metal-poor gas accretion [PDF]

, 2014
We measure the oxygen metallicity of the ionized gas along the major axis of seven dwarf star-forming galaxies. Two of them, SDSSJ1647+21 and SDSSJ2238+14, show 0.5 dex metallicity decrements in inner regions with enhanced star-formation activity.
Almeida, J. Sanchez, Elmegreen, B. G., Elmegreen, D. M., Mendez-Abreu, J., Morales-Luis, A. B., Munoz-Tunon, C.   +5 more
core   +3 more sources

Bimodal Infrared Colors of the M87 Globular Cluster System: Peaks in the Metallicity Distribution

, 2007
The globular cluster (GC) systems of many galaxies reveal bimodal optical color distributions. Based on stellar evolutionary models and the bimodal colors and metallicities of Galactic GCs this is thought to reflect an underlying bimodal metallicity ...
Kundu, Arunav, Zepf, Stephen E.
core   +1 more source