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Articles 1 - 14 of 14
Full-Text Articles in Physical Sciences and Mathematics
In-Class Activities For Openstax Astronomy, Rosa Williams, Kimberly Shaw
In-Class Activities For Openstax Astronomy, Rosa Williams, Kimberly Shaw
Physics and Astronomy Ancillary Materials
This set of in-class activities in Microsoft Word format are intended to supplement OpenStax Astronomy. Topics include:
- Atmospheric Gas
- Celestial Sphere
- Dwarf Planets
- Earth Size
- Earth Impact
- Greenhouse Gases and Climate Change
- Jovian Planet
- Jovian Moon and Ring
- Mars Atmosphere and Climate
- Solar System Formation and Scale
- Sunspots
- Terrestrial Planet and Lunar Features
- Venus Atmosphere and Climate
1207-3900_Nir_Spex, Jonathan Gagné
1207-3900_Opt_Mage, Jonathan Gagné
0112+1703_Nir_Gnirs, Michael C. Liu
2114-2251_Nir_Gnirs, Michael C. Liu
Deep Silicate Absorption Features In Compton-Thick Active Galactic Nuclei Predominantly Arise Due To Dust In The Host Galaxy, A. D. Goulding, D. M. Alexander, F. E. Bauer, W. R. Forman, R. C. Hickox
Deep Silicate Absorption Features In Compton-Thick Active Galactic Nuclei Predominantly Arise Due To Dust In The Host Galaxy, A. D. Goulding, D. M. Alexander, F. E. Bauer, W. R. Forman, R. C. Hickox
Dartmouth Scholarship
We explore the origin of mid-infrared (mid-IR) dust extinction in all 20 nearby (z < 0.05) bona fide Compton-thick (N H > 1.5 × 1024 cm–2) active galactic nuclei (AGNs) with hard energy (E > 10 keV) X-ray spectral measurements. We accurately measure the silicate absorption features at λ ~ 9.7 μm in archival low-resolution (R ~ 57-127) Spitzer Infrared Spectrograph spectroscopy, and show that only a minority (≈45%) of nearby Compton-thick AGNs have strong Si-absorption features (S 9.7 = ln (f int/f obs) 0.5) which would indicate significant dust attenuation. The majority (≈60%) are star …
1112+3548_Nir_Spex, J. Patience
1139-3159_Nir_Spex, Dagny L. Looper
1021-0304_Mir_Irs, Michael C. Cushing
0610-2152b_Nir_Stis, D. A. Golimowski
0415-0935_Opt_Lris, Adam J. Burgasser
0937+2931_Opt_Lris, Adam J. Burgasser
0920+3517_Nir_Spex, Maria Teresa Ruiz
1237+6526_Opt_Lris, Adam J. Burgasser