A5107233314- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Stellar, planetary, and galactic studies
- Adaptive optics and wavefront sensing
- Astrophysical Phenomena and Observations
- Infrared Target Detection Methodologies
- Consumer Behavior in Brand Consumption and Identification
- Educational Technology in Learning
- Plant Water Relations and Carbon Dynamics
- Advanced Vision and Imaging
- Spectroscopy and Laser Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Fashion and Cultural Textiles
- Linguistic Studies and Language Acquisition
- Second Language Learning and Teaching
- Astrophysics and Star Formation Studies
- Remote Sensing in Agriculture
- Digital Media and Visual Art
Guangdong University Of Finances and Economics
2025
Guangdong University of Finance
2025
Galaxies, Etoiles, Physique et Instrumentation
2007-2017
Université Paris Cité
2007-2015
Centre National de la Recherche Scientifique
2007-2015
Délégation Paris 7
2007-2015
National Astronomical Observatories
2009-2010
Chinese Academy of Sciences
2009-2010
Observatoire de Paris
2009-2010
Janssen (Belgium)
2009
We investigate whether the Hubble sequence can be reproduced by relics of merger events. verify that, at = 0.65, abundant population anomalous starbursts – i.e. with peculiar morphologies and abnormal kinematics is mainly linked to local spirals. Their are dominated young stars intimately related their ionised-gas kinematics. show that both using gas modelling from Barnes' (2002, MNRAS, 333, 481) study major mergers. content may indirectly evaluated assuming distant follow Kennicutt-Schmidt...
The way galaxies assemble their mass to form the well-defined Hubble sequence is amongst most debated topic in modern cosmology. One difficulty link distant those at present epoch. We aim establishing how were of sequence, 6 Gyrs ago. intend derive a past that can be causally linked present-day one. selected samples nearby from SDSS and GOODS survey. verified each sample representative galaxies. further showed observational conditions necessary retrieve morphological classification are...
Abstract: The Qing Dynasty export fans resulted from 18th and 19th-century East-West cultural exchanges. Their uniqueness stems the development of an export-focused art culture during Ming dynasties advent trade in globalization era. These blend commercial significance, warranting extensive research. This paper employs a literature review observational method, with “From aesthetic form to philosophical concept as its core logic, visually analyze range fans”. Cultural aesthetics research is...
By combining Ultra Deep Field imagery from HST/ACS with kinematics VLT/GIRAFFE, we derive a physical model of distant galaxies in way similar to that achievable for nearby galaxies. A significant part the evolution density cosmic star formation is related rapid both luminous IR (LIRGs) and Luminous Compact galaxies: here study properties distant, compact galaxy, J033245.11-274724.0, which also LIRG. Given photometric spectrophotometric accuracies data all wavelengths, can decompose galaxy...
Most giant spiral galaxies have pseudo or disk-like bulges that are considered to be the result of purely secular processes. This may challenge hierarchical scenario predicting about one major merger per massive galaxy ($>$$3\times 10^{10} M_{\odot}$) since last $\sim$ 9 billion years. Here we verify whether not association between pseudo-bulges and processes is irrevocable. Using GADGET2 N-body/SPH simulations, conducted a systematic study remnants mergers which progenitors been selected...
Based on the Sloan Digital Sky Survey DR 7, we investigate environment, morphology, and stellar population of bulgeless low surface-brightness (LSB) galaxies in a volume-limited sample with redshift ranging from 0.024 to 0.04 Mr≤−18.8. The local density parameter Σ5 is used trace their environments. We find that, for galaxies, surface brightness does not depend environment. populations are compared LSB different environments morphologies. low-density regions similar those high-density...
Galactic halos are known to grow hierarchically, inside out. This implies a correlation between the infall lookback time of satellites and their binding energy. Cosmological simulations predict linear relation logarithm energy, with small scatter. Gaia measurements bulk proper motions globular clusters dwarf Milky Way sufficiently accurate establish kinetic energies these systems. Assuming gravitational potential Way, we can deduce those galaxies that were previously accreted by Way. be...
The detection and characterization of the physical properties very distant galaxies will be one prominent science case all future Extremely Large Telescopes, including 39m E-ELT. Multi-Object Spectroscopic instruments are potentially important tools for studying these objects, in particular fiber-based concepts. However, detecting such faint sources require subtraction sky background signal (i.e., between OH airglow lines) with an accuracy 1%. This requires a precise accurate knowledge...
The amplitudes and scales of spatial variations the sky continuum background can be a potential limit telescope performance, because study extremely faint objects requires subtraction accuracy below 1%. Thus, studying its statistical properties is essential for design next generation instruments, especially fiber-fed as well their observation strategies. Using ESO archive data VLT/FORS2 long-slit observations, we analyzed auto-correlation function continuum. As preliminary results, find that...
The powerful combination of the cutting-edge multi-object spectrograph MOSAIC with world largest telescope, ELT, will allow us to probe deeper into Universe than was possible. is an extremely efficient instrument in providing spectra for numerous faint sources Universe, including very first galaxies and cosmic reionization. has a high multiplex NIR VIS, addition multi-Integral Field Units (Multi-IFUs) NIR. As such it perfectly suited carry out inventory dark matter (from rotation curves)...
Galactic halos are known to grow hierarchically, inside out. This implies a correlation between the infall lookback time of satellites and their binding energy. In fact, cosmological simulations predict linear relation log energy, with small scatter. Gaia measurements bulk proper motions globular clusters dwarf Milky Way sufficiently accurate establish kinetic energies these systems. Assuming gravitational potential Way, we can deduce satellites, as well galaxies previously accreted by which...
de niveau recherche, publiés ou non, émanant des établissements d'enseignement et recherche français étrangers, laboratoires publics privés.
The use of multiple integral field units with FLAMES/GIRAFFE at VLT has revolutionized investigations distant galaxy kinematics. This facility may recover the velocity fields almost all emission line galaxies I_(AB)<22.5 z<0.8. We have gathered a unique sample 63 z=0.4-0.75, which are representative M_stellar > 1.5*10^10 M_sun W_0([OII])>15 Ågalaxies, and unaffected by cosmic variance. Taking into account -with or without lines- in that redshift range, we find 42+/-7% them...