Results 31 to 40 of about 5,582,882 (269)

From Carbon to Cobalt: Chemical Compositions and Ages of z ∼ 0.7 Quiescent Galaxies

The Astrophysical Journal, 2023
We present elemental abundance patterns (C, N, Mg, Si, Ca, Ti, V, Cr, Fe, Co, and Ni) for a population of 135 massive quiescent galaxies at z ∼ 0.7 with ultra-deep rest-frame optical spectroscopy drawn from the LEGA-C survey.
Aliza G. Beverage, Mariska Kriek, Charlie Conroy, Nathan R. Sandford, Rachel Bezanson, Marijn Franx, Arjen van der Wel, Daniel R. Weisz   +7 more
doaj   +1 more source

The stellar content of the nuclear regions of SC galaxies [PDF]

The Astrophysical Journal, 1976
The stellar content of the nuclear regions of seven nearby Sc galaxies has been determined by means of population syntheses utilizing narrow-band spectrophotometric observations covering the wavelength range 3300A-10400A. A linear-programming fitting technique is used in conjunction with simple models of star formation to provide physically consistent ...
openaire   +2 more sources

On the stellar content of the Carina dwarf spheroidal galaxy

, 2010
Accepted on PASP, 12 pages, 6 ...
Bono, Guillaume, Stetson, P.B., Walker, A.R., Monelli, M., Fabrizio, M., Pietrinferni, A., Brocato, E., Buonanno, R., Caputo, F., Cassisi, S., Castellani, M., Cignoni, M., Corsi, C.E., Dall'Ora, M., Degl'Innocenti, S., François, P., Ferraro, I., Iannicola, G., Nonino, M., Moroni, P.G.P., Pulone, L., Smith, H.A., Thévenin, F.   +22 more
openaire   +6 more sources

Structure and stellar content of dwarf galaxies [PDF]

Astronomy and Astrophysics Supplement Series, 2000
We have carried out CCD photometry in the Cousins B and R bands of 15 galaxies in the Canes Venatici I cloud. Total magnitudes, effective radii, effective surface brightnesses, as well as galaxy radii at various isophotal levels in both colors were determined.
Bremnes, T., Binggeli, B., Prugniel, P.
openaire   +2 more sources

Near‐Infrared Imaging of H2O2 in Plants With Nanosensors Under Environmentally Changing Conditions

Advanced Materials, EarlyView.
This paper reports a ratiometric nanosensor enabling robust, multivariate detection of stress signals (H2O2) in plants, with high resistance to light fluctuations and mechanical disturbances. Single‐walled carbon nanotubes serve as the sensor, Egyptian Blue nanosheets serve as a stable reference, and plant autofluorescence serves as a label‐free ...
Jiaqi Li, Bjoern F. Hill, Chen Ma, Juliana Gretz, Tanuja Kistwal, Janus A. C. Wartmann, Justus T. Metternich, Juan Pablo Giraldo, Sebastian Kruss   +8 more
wiley   +1 more source

Galaxy And Mass Assembly (GAMA): the wavelength-dependent sizes and profiles of galaxies revealed by MegaMorph [PDF]

, 2014
We investigate the relationship between colour and structure within galaxies using a large, volume-limited sample of bright, low-redshift galaxies with optical–near-infrared imaging from the Galaxy And Mass Assembly survey.
Popescu, Cristina C., Vulcani, Benedetta, Tuffs, Richard J., Bauer, A.E., Graham, Alister W., Robotham, A.S.G., Rojas, Alex L., Baldry, Ivan, Loveday, J., Kelvin, Lee S., Bamford, Steven P., Agius, N.K., Browne, William J.I., Liske, J., Vika, Marina, Driver, Simon, H�u�ler, Boris, Vulcani, B., Baldry, I., Kelvin, L., Robotham, A., Haeussler, Boris, Tuffs, R., Bamford, S. P., Agius, N., Bauer, A. E., Popescu, Cristina, Brown, M. J. I., Rojas, Alex, Haussler, B., Häußler, Boris, Bauer, A., Loveday, Jon, Tuffs, R. J., Robotham, A. S. G., Liske, Jochen, Vika, M., Graham, A. W., Bamford, S., Graham, A., Agius, N. K., Driver, S., Baldry, Ivan K., Robotham, Aaron S. G., Popescu, C., Agius, Nicola K., Kelvin, L. S., Rojas, A., Bauer, Amanda E., Brown, M., Brown, Michael J. I.   +50 more
core   +1 more source

Spiral arms across stellar populations in simulations via the local dimension method

Astronomy & Astrophysics
Context. The origin and nature of spiral arms remain unclear. Star-forming regions and young stars are generally strongly associated with the spiral structure, but there are few quantitative predictions from simulations about the contribution of stars of
Ardèvol J., Semczuk M., Antoja T., Debattista V. P., Bernet M., Pettitt A.   +5 more
doaj   +1 more source

Continuum Robots in Surgery: From Engineering Design to Clinical Practice

Advanced Robotics Research, EarlyView.
The hyper‐redundant nature of continuum robot structures enables near‐infinite degrees of freedom leading to immense potential for medical applications. This review provides a historical background of continuum robots and novel ideas shaping their progress to current structural design, sensing technology, modeling techniques, and control methods.
Griffin Smith, Kaitlyn Clancy, Siwen Xie, Xiaochen Li, Sarah Khalife, Benjamin van der Woerd, Onaizah Onaizah   +6 more
wiley   +1 more source

The SAMI Galaxy Survey revisiting Galaxy classification through high-order stellar kinematics. (2017)

, 2017
The SAMI instrument and Galaxy Survey is described in detail in Croom+ (2012MNRAS.421..872C) and Bryant+ (2015MNRAS.447.2857B). SAMI is a multi-object integral field spectrograph on the 3.9m Anglo Australian Telescope (AAT).
Ho, I.-Ting, McElroy, Rebecca, Leslie, Sarah K., Tonini, Chiara, Konstantopoulos, Iraklis S., Sweet, Sarah M., Groves, Brent, van de Sande, Jesse, Fogarty, Lisa M. R., Oh, Sree, Bland-Hawthorn, J., Cortese, Luca, Goodwin, Michael, Medling, Anne M., López-Sánchez, Ángel R., Goldstein, Gregory, Davies, Roger, Allen, James T., Owers, Matt S., Richards, Samuel N., Bryant, Julia J., Taranu, Dan, Yi, Sukyoung K., McDermid, Richard M., Couch, Warrick J., Cecil, Gerald, Colless, Matthew, Sharp, Rob, Jeong, Hyunjin, d'Eugenio, Francesco, Brough, Sarah, Scott, Nicholas, Walcher, C. Jakob, Elahi, Pascal J., Croom, Scott M., Schaefer, Adam L., Lawrence, Jon S., Foster, Caroline, Jones, D. Heath   +38 more
core   +1 more source

STELLAR, GAS, AND DARK MATTER CONTENT OF BARRED GALAXIES [PDF]

The Astrophysical Journal, 2017
ABSTRACT We select a sample of galaxies from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7) where galaxies are classified, through visual inspection, as hosting strong bars, weak bars, or as unbarred galaxies, and make use of H i mass and kinematic information from the Arecibo Legacy Fast ALFA survey catalog, to study the stellar,
openaire   +2 more sources