A5014776779- Stellar, planetary, and galactic studies
- Research Data Management Practices
- Astrophysics and Star Formation Studies
- Big Data and Business Intelligence
- Data Quality and Management
- Big Data Technologies and Applications
- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Scientific Computing and Data Management
- Astrophysics and Cosmic Phenomena
- Molecular Spectroscopy and Structure
- Astro and Planetary Science
- Atomic and Molecular Physics
- Atmospheric Ozone and Climate
- Adaptive optics and wavefront sensing
- Astrophysical Phenomena and Observations
- Law, Ethics, and AI Impact
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Semantic Web and Ontologies
- Carbon Nanotubes in Composites
- Fusion materials and technologies
- Knowledge Management in Higher Education
- Cosmology and Gravitation Theories
- Fullerene Chemistry and Applications
Delft University of Technology
2018-2019
Leiden University
2013-2018
Pontificia Universidad Católica de Chile
2009-2014
Leiden Observatory
2013-2014
Whitman College
1995
The polycyclic aromatic hydrocarbon (PAH) emission observed in the Spitzer Infrared Spectrograph spectra of bright mid-IR locations NGC 7023, 2023, and 1333 was analyzed. These objects show large variations PAH band ratios when studied through spectral mapping. Nevertheless, at these spots a remarkably similar emission. We used NASA Ames IR Spectroscopic Database to fit observations analyze derived populations. Our results that 5–15 μm range appears be rather insensitive radiation field....
Context. We have modelled the abundance distribution and IR emission of first 3 members coronene family in north-west photodissociation region well-studied reflection nebulae NGC 7023.
Context. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey is a variability survey of Milky Way bulge and an adjacent section disk carried out from 2010 on Visible Infrared Telescope for Astronomy (VISTA). VVV will eventually deliver deep near-IR atlas with photometry positions five passbands (ZYJHKS) catalogue 1−10 million variable point sources – mostly unknown that require classifications.
The physical and chemical conditions in photodissociation regions (PDRs) are largely determined by the influence of far ultraviolet radiation. Far-UV photons can efficiently dissociate molecular hydrogen, a process that must be balanced at HI/H2 interface PDR. Given reactions involving hydrogen atoms gas phase highly inefficient under interstellar conditions, H2 formation models mostly rely on catalytic surface dust grains. Additionally, polycyclic aromatic hydrocarbons (PAHs) through...
Context. IC 63 and 59 are a pair of cometary-shaped nebulae in the vicinity star γ Cas (also known as Tsih , “the Whip”). Both have very different optical appearances, despite fact that both objects lie at similar projected distances from star: shows bright rims filaments, while looks more homogeneous faint. Aims. We aim to perform general description two an observational standpoint order study physical conditions UV-illuminated surfaces these objects. Methods. used available data on taken...
The Vista Variables in the V\'ia L\'actea (VVV) ESO Public Survey is an ongoing time-series, near-infrared (IR) survey of Galactic bulge and adjacent portion inner disk, covering 562 square degrees sky, using ESO's VISTA telescope. has provided superb multi-color photometry 5 broadband filters ($Z$, $Y$, $J$, $H$, $K_s$), leading to best map Milky Way ever obtained, particularly near-IR. main variability part survey, which focused on $K_s$-band observations, currently underway, with fields...
We present near and mid--IR observations of a sample Seyfert II galaxies drawn from the $12μ$m Galaxy Sample. The was observed in J, H, K, L, M N bands. Surface Brightness Profiles are modeled using nuclear, bulge, bar (when necessary) disk components. To check reliability our findings procedure tested {\em Spitzer\/} M\,31. Nuclear Spectral Energy Distributions (SEDs) determined for 34 objects, optical spectra presented 38, including analysis their stellar populations STARLIGHT spectral...
The Data Stewardship project is a new initiative from the Delft University of Technology (TU Delft) in Netherlands. Its aim to create mature working practices and policies regarding research data management across all TU faculties. novelty this relies on having dedicated person, so-called ‘Data Steward’, embedded each faculty approach more discipline-specific perspective. It within framework that survey was carried out at faculties had Steward place by July 2018. goal get an overview general...
Based on recent results the frequency of MgII absorption line systems in "QSO behind RCS clusters" survey (QbC), we analyse effects cluster environment sizes baryonic haloes around galaxies. We use two independent models, i) an empirical halo occupation model which fits current measurements clustering and luminosity function galaxies at low high redshifts, ii) GALFORM semi-analytic galaxy formation, follows evolution population from first principles, adjusted to match statistics redshift In...
We present Gemini/GMOS-S multi-object spectroscopy of 31 galaxy cluster candidates at redshifts between 0.2 and 1.0 centered on QSO sight-lines taken from Lopez et al. (2008). The targets were selected based the presence a intervening MgII absorption system similar redshift to that candidate lying projected distance < 2 h^{-1}Mpc sight-line (a 'photometric-hit'). systems span rest-frame equivalent widths 0.015 2.028 angstroms. Our aim was 3-fold: 1) identify absorbing galaxies determine...
Abstract The Vista Variables in the Vía Láctea (VVV) ESO Public Survey is an ongoing time-series, near-infrared (IR) survey of Galactic bulge and adjacent portion inner disk, covering 562 square degrees sky, using ESO's VISTA telescope. has provided superb multi-color photometry 5 broadband filters ( Z , Y J H K s ), leading to best map Milky Way ever obtained, particularly near-IR. main part survey, which focused on variability -band, currently underway, with fields observed between 34 73...
Context. The Vista Variables in the V\'ia L\'actea (VVV) ESO Public Survey is a variability survey of Milky Way bulge and an adjacent section disk carried out from 2010 on Visible Infrared Telescope for Astronomy (VISTA). VVV will eventually deliver deep near-IR atlas with photometry positions five passbands (ZYJHK_S) catalogue 1-10 million variable point sources - mostly unknown which require classifications. Aims. main goal Templates Project, that we introduce this work, to develop test...