Conference Papers & Multi-media Presentations
2014
Modeling DACs and Rotational Modulations in J Puppis.
Talk: Magnetism and variability in O stars, Univ. Amsterdam, Netherlands, Sep 2014.
(5.7 Mb
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Modeling the Asymmetric Wind of the Luminous Blue Variable Binary MWC 314A.
Talk: 5 years of HERMES, Univ. Leuven, Belgium, Sep 2014.
(1 Mb
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Microturbulence velocity of A-type stars in the Gaia ESO Public Spectroscopic Survey.
Poster: EWASS 2014 : European Week of Astronomy and Space Science, Geneva, Switzerland, Jul 2014.
(0.3 Mb
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Discrete absorption components in the massive LBV Binary MWC 314.
Poster paper: IAU 307 : New Windows on massive stars: asteroseismology, interferometry and spectropolarimetry, Univ. Geneva, Switzerland, Jun 2014.
(0.2 Mb
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VLT Spots Largest Yellow Hypergiant Star.
Press Release European Southern Observatory, Mar 2014.
Link to:
ESO Science Release 1409
Auxilairy data for CU8 : astrophysical parameters of OBA stars.
Talk: Ground Based Observations for Gaia : Meeting 14, Telecon, Jan 2014.
(0.8 Mb
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2013
Modeling the Asymmetric Wind of the Luminous Blue Variable MWC 314.
Contributed Talk: Mercator-HERMES Consortium days, Univ. Leuven, Belgium, Sep 2013.
(3.0 Mb
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Atomic Data Requirements for Large Spectroscopic Surveys: ESA Gaia and ESO GES.
Contributed Talk: 11th Int. Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas, Univ. Mons, Belgium, Aug 2013.
(9.0 Mb
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3-D Radiative Transfer Modeling of Rotational Modulations in the Blue Supergiant J Puppis.
Contributed Talk: Massive Stars: from α to Ω, Rhodes, Greece, Jun 2013.
(8.0 Mb
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Astrophysical Parameters of A-stars in the Young Open Clusters NGC 3293 and NGC 6705.
Gaia ESO Public Spectroscopic Survey First Science Meeting, Nice, France, Apr 2013.
(2.0 Mb
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2012
Hypergiant star amazes for 30 years.
Royal Observatory of Belgium Press Release Nov 2012.
Link to:
ROB website
The White Hypergiants HR 8752, IRC+10420, and 6 Cas Close to the Yellow Evolutionary Void.
Poster paper, 370 Years of Astronomy in Utrecht, Noordwijkerhout, Netherlands, Apr 2012.
(0.3 Mb
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Workshop Report: Quantitative Spectroscopy and Comparative Spectrum Modeling, Brussels, June 2011.
Invited talk, European Week of Astronomy and Space Science 2012, Special Meeting 2: GREAT PM5, Rome, Jul 2012.
(4.6 Mb
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Spectroscopic Observations of Benchmark & Reference Hot Stars for Gaia.
Contributed talk, European Week of Astronomy and Space Science 2012, Symposium S5, Rome, Jul 2012.
(2.9 Mb
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Quantitative Spectroscopy of Massive Hot Stars.
Invited Seminar, Univ. of Leuven, CPA & IvS Seminars, Apr 2012.
(8 Mb
pdf)
Gaia DPAC CU8 Report: Ground-based Observations of Gaia Benchmark and Reference Hot Stars.
Contributed talk, Ground Based Observations for Gaia GBOG Meeting 12, Oct 2012.
(1.2 Mb
pdf)
2011
Stellar Atmospheres in the Gaia Era: Quantitative Spectroscopy and Comparative Spectrum Modeling.
Workshop Summary, Free Univ. of Brussels (VUB), Belgium, 24 June 2011.
(3.5 Mb
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Link to:
Workshop program
Stellar Atmospheres in the Gaia Era.
Conference review paper (0.5 Mb
pdf)
Modeling the Asymmetric Wind of Massive LBV Binary MWC 314.
Poster paper, ASP Conf. Ser. 2012, Four Decades of Massive Star Research - A Scientific Meeting in Honor of A. Moffat, Auberge du Lac Taureau, Quebec, Canada, 11-15 July 2011.
(1.1 Mb
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Gaia-ESO Survey WG13: OBA-star Spectrum Analyses.
Invited Talk, The UVES Analysis of the Gaia-ESO Survey: tests, tools, and survey implementation, ESO, Garching, Germany, 26-27 Sep 2011.
(4.8 Mb
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2010
SpectroWeb Database Development.
Contributed Talk, HERMES Spectrograph Science Meeting, Univ. of Leuven, Belgium, Oct. 2010.
(1.2 Mb
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Long-term Spectroscopic Monitoring of Luminous Blue Variables and Hypergiants.
Contributed Talk, HERMES Spectrograph Science Meeting, Univ. of Leuven, Belgium, Oct. 2010.
(3.4 Mb
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Oscillator Strength Measurements of Atomic Absorption Lines from Stellar Spectra.
Contributed Talk, 10th Int. Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas, ASOS 10
Univ. California Berkeley, CA, USA, Aug. 2010.
(1.4 Mb
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Long-term Spectroscopic Monitoring of LBVs and LBV Candidates.
Poster paper, IAU Symposium 272, Active OB Stars: Structure, Evolution, Mass loss and Critical Limits, Paris, France, July 2010.
(0.7 Mb
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3-D Radiative Transfer Modeling of Structured Winds in Massive Hot Stars with Wind3D.
Contributed Talk, 39th Liege Int. Astroph. Coll., The multi-wavelength View of Hot, Massive Stars, Liege, Belgium, July 2010.
(7.6 Mb
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Gaia GREAT-ESF PM3: Stellar Atmospheres.
Contributed Talk, Gaia GREAT Plenary Meeting 3: Group B, ESTEC, Noordwijk, The Netherlands, June 2010.
(1.8 Mb
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Gaia GREAT-ESF in Belgium: Stellar Atmopsheres.
Invited Talk, Gaia GREAT WG Meeting on Double and Multiple Stars, Univ. Libre de Bruxelles, Belgium, May 2010.
(2.6 Mb
pdf)
2009
Data Mining and Processing of Ground-based Observations for ESP-ELS in CU8.
Contributed Talk, 6th Ground Based Observations for Gaia Meeting, Nice, France, Nov. 2009.
(2.4 Mb
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Parametrized Structured Wind Modelling of Massive Hot Stars with Wind3D.
Poster paper, 27th General Assembly of the Int. Astronomical Union, Rio de Janeiro, Brazil, Aug. 2009.
(3.8 Mb
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Radiative Transfer Modelling of Rotational Modulations in B Supergiant HD 64760.
Poster paper, 27th General Assembly of the Int. Astronomical Union, Rio de Janeiro, Brazil, Aug. 2009.
(2.4 Mb
pdf)
Hot Stars Survey with the Gaia Space Mission.
Poster paper, 27th General Assembly of the Int. Astronomical Union, Rio de Janeiro, Brazil, Aug. 2009.
(1.1 Mb
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2008
Radiative Transfer Modeling of the Winds & Circumstellar Environments of Hot And Cool Massive Stars.
Contributed Talk, Hot And Cool: Bridging Gaps in Massive Star Evolution, Caltech Campus, Pasadena, USA, Nov. 2008.
(3.6 Mb
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Link to:
Presentation & animations
3-D Radiative Transfer Modelling of Massive-Star UV Wind Line Variability.
Contributed Talk, 38th Liege Int. Astrophysical Colloquium, Liege, Belgium, July 2008.
(0.3 Mb
pdf)
Link to:
Presentation & animations
2007
SpectroWeb: Oscillator Strength Measurements of Atomic Absorption Lines in the Sun and Procyon.
Poster paper, Int. Conf. on ASOS 9, Lund, Sweden, Aug 2007.
(0.7 Mb
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Modeling Discrete Absorption Components in Ultraviolet Lines of Massive Hot Stars.
Contributed talk, Int. Conf. on Clumping in Hot Stars, Potsdam, Germany, June 2007.
(0.9 Mb
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Link to:
Presentation & animations
Link to:
Corotating Interaction Regions in Hot Star Winds at ROB
2006
SpectroWeb: An Interactive Graphical Database of Digital Stellar Spectral Atlases.
Poster paper, 26th General Assembly of the Int. Astronomical Union, Prague, Czech Rep., Aug 2006.
(0.8 Mb
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Three Dimensional Radiative Transfer in Winds of Massive Stars: Wind3D.
Poster paper, 26th General Assembly of the Int. Astronomical Union, Prague, Czech Rep., Aug 2006.
(0.3 Mb
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2005
The Origin and Variability of the CO Near-IR Band in the Yellow Hypergiant ρ Cassiopeiae.
Poster paper, American Astronomical Society Meeting 205, Jan 2005, San Diego, USA.
(1.9 Mb
pdf)
2004
Semi-empiric Radiative Transfer Modeling of FUSE Stellar Spectra.
Poster paper, Int. Conf. on Five Years of Discovery with FUSE, Victoria, Canada, Aug 2004.
(0.4 Mb
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Spatially Resolved STIS Spectra of Betelgeuse's Upper Chromosphere and Circumstellar Dust Envelope.
Contributed talk, Int. Conf. on Cool Stars 13, Hamburg, Gemany, Jul 2004.
(2.1 Mb
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PowerPoint presentation & animations
Mass-loss and Recent Spectral Changes in the Yellow Hypergiant ρ Cassiopeiae.
Poster paper, Int. Conf. on Cool Stars 13, Hamburg, Germany, Jul 2004.
(1.3 Mb
pdf)
Storms of Hot and Cold Gas Rage in Betelgeuse's Turbulent Atmosphere.
Press Release, American Astronomical Society Meeting, Atlanta, USA, Jan 2004.
Press Release (0.2 Mb pdf)
Link to:
Harvard Univ. website
2003
Spatially Resolved STIS Spectroscopy of Betelgeuse's Outer Atmosphere.
Poster paper, 25th General Assembly of the Int. Astronomical Union, Sydney, Australia, Jul 2003.
(0.4 Mb
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Spectroscopy of the Millennium Outburst and Recent Variability of the Yellow Hypergiant ρ Cassiopeiae.
Poster paper, 25th General Assembly of the Int. Astronomical Union, Sydney, Australia, Jul 2003.
(0.4 Mb
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The Throes of a Hypergiant Star Facing Death: Rho Cassiopeiae's Monster Atmosphere Explodes Violently.
Press Conference, American Astronomical Society Meeting, Seattle, USA, Jan 2003.
Press Release
Link to:
Harvard Univ. website
Press Conference presentation and animation.
2002
The Millennium Outburst of the Cool Hypergiant ρ Cassiopeiae: Spectroscopy and Modeling.
Poster paper, Int. Astronomical Union Meeting 210, Uppsala, Sweden, Jun 2002.
(0.6 Mb
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Modeling FUSE Spectra of Cool Luminous Stars.
Poster presentation, First FUSE Science & Data Workshop, Baltimore, USA, Aug 2002.
(0.7 Mb
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Spectroscopy of the Rho Cas Millennium Outburst.
Poster presentation, American Astronomical Society Meeting 199, Washington DC, USA, Jan 2002.
(0.5 Mb
pdf)
2001
Chromospheric Dynamics of Betelgeuse from STIS Spectra.
Contributed talk, Int. Conf. on Cool Stars 12, Boulder, USA, Jul 2001.
(1.3 Mb
pdf)
The Chromospheres of G-type Ib Supergiants.
Poster paper, American Astronomical Society Meeting 197, San Diego, USA, Jan 2001.
(0.67 Mb
pdf)
2000
Will HR 8752 Become a P Cygni Type Star?
Poster paper, Int. Conf. P Cygni 2000, Armagh, UK, Jul 2000.
(text)
Spatially resolved Space Telescope Imaging Spectrograph Spectroscopy of Betelgeuse: Evidence for Non-Radial Chromospheric Oscillation from Detailed Modeling.
Contributed talk, Int. Conf. on Eta Car and Other Mysterious Stars, Hven, Sweden, Aug 2000.
(0.3 Mb
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Like a Human Heart: Betelgeuse's Chromosphere Beats Asymmetrically.
Press Release, American Astronomical Society Meeting, Atlanta, USA, Jan 2000.
Link to:
Harvard Univ. website
1999
Spatially Resolved Tomographic Space Telescope Imaging Spectrograph Spectroscopy of Betelgeuse.
Poster paper, Int. Conf. on Cool Stars 11, Tenerife, Spain, Oct 1999.
(1.8 Mb
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Stellar Evolution of the Hypergiants HR 8752 and ρ Cassiopeiae on Human Timescales.
Poster paper, Int. Conf. on Cool Stars 11, Tenerife, Spain, Oct 1999.
(1.7 Mb
pdf)
1992-1998 (incomplete)
The Variable Spectrum of the Yellow Hypergiant ρ Cassiopeiae.
Poster paper, Int. Conf. on Cool Stars 10, Cambridge, USA, Jul 1997.
(1.8 Mb
pdf
and
split line variability animation )
The Atmospheric Model Parameters of Eta Leo.
Contributed talk, Int. Conf. on Instabilities in Evolved Super- and Hypergiants, Amsterdam, The Netherlands, Feb 1991.
(0.3 Mb
pdf)
The Instability Parameters of Stellar Atmospheres.
Contributed talk, Int. Conf. on Instabilities in Evolved Super- and Hypergiants, Amsterdam, The Netherlands, Feb 1991.
(0.3 Mb
pdf)