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My research in a nutshell

My research in a nutshell

I gave this intro-talk at our ISM group meeting at STScI. This talk summarizes the research I did during my PhD, and briefly explains my current project.

Marjorie Decleir

March 23, 2020
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  1. B.S. in Physics and Astronomy (2013) M.S. in Physics and

    Astronomy (2015) PhD in Astronomy (November 2019) Supervisors: Maarten Baes, Ilse De Looze Postdoc at STScI Supervisor: Karl Gordon Who am I and where do I come from?
  2. Interstellar dust Minor fraction of ISM… à Why do we

    care?? …But crucial constituent! Temperature of interstellar gas Formation of H2 Shielding dark matter, 90% stars, 7% ISM, 3% star & planet formation gas, 99% dust, 1%
  3. Standard pipeline: not suitable New pipeline for extended sources Swift

    ata eduction of xtended wift ources ode ode https://github.com/mdcleir/DRESSCode
  4. Co-add the frames per year, per filter … … …

    raw image sky map aspect corrected map aspect correction summed image corrected image corrections: coincidence loss large scale sensitivity variations sensitivity loss combined image final image raw image sky map aspect corrected map raw image sky map aspect corrected map summed image corrected image summed image corrected image Combine images of different years calibration quality map exposure map large scale sensitivity map
  5. Higher AV à shallower slope Higher AFUV à steeper slope

    But higher AV à higher AFUV ?? Decleir+2019 slope bump V-band attenuation (AV ) attenuation wavelength (Å)
  6. slope slope bump bump AV AV slope AV Stellar mass

    gas mass dust mass SFR metallicity PAH IRAC 8µm inclination Hubble type
  7. wavelength (µm) NIR extinction curves SpeX spectrograph - Infrared Telescope

    Facility (IRTF) on Mauna Kea - medium-resolution - 0.7-5.3 µm SXD = Short wavelength cross-dispersed mode LXD = Long wavelength cross-dispersed mode IUE SpeX SXD SpeX LXD IRS flux
  8. wavelength (µm) NIR extinction curves IUE SpeX SXD SpeX LXD

    IRS RV dependence? New features? extinction To be continued…