Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Multiwavelength (ISM) Dust Signatures
Search
Karl Gordon
November 01, 2021
Research
0
51
Multiwavelength (ISM) Dust Signatures
Talk for ISM*@ST research group.
Karl Gordon
November 01, 2021
Tweet
Share
More Decks by Karl Gordon
See All by Karl Gordon
Far-Ultraviolet to Mid-Infrared Dust Extinction
karllark
0
18
Far-Ultraviolet to Mid-Infrared Dust Extinction Curves in the Milky Way, LMC, and SMC
karllark
0
87
An Insiders View of the JWST First Observations
karllark
0
33
Dust Extinction in the Diffuse Interstellar Medium
karllark
1
120
UVEX Workshop: Dust at Low Metallicites
karllark
0
130
Dust Extinction and SDSSV Milky Way Mapper
karllark
0
75
Dust Extinction in the Diffuse Interstellar Medium
karllark
0
110
JWST Absolute Flux Calibration
karllark
0
160
JWST MIRI Imaging Processing: Lessons from EROs
karllark
0
200
Other Decks in Research
See All in Research
言語モデルLUKEを経済の知識に特化させたモデル「UBKE-LUKE」について
petter0201
0
200
CUNY DHI_Lightning Talks_2024
digitalfellow
0
440
ソフトウェア研究における脅威モデリング
laysakura
0
1.6k
ベイズ的方法に基づく統計的因果推論の基礎
holyshun
0
810
Practical The One Person Framework
asonas
1
2.1k
AIトップカンファレンスからみるData-Centric AIの研究動向 / Research Trends in Data-Centric AI: Insights from Top AI Conferences
tsurubee
3
1.5k
情報処理学会関西支部2024年度定期講演会「自然言語処理と大規模言語モデルの基礎」
ksudoh
10
2.5k
Remote Sensing Vision-Language Foundation Models without Annotations via Ground Remote Alignment
satai
2
120
論文紹介: COSMO: A Large-Scale E-commerce Common Sense Knowledge Generation and Serving System at Amazon (SIGMOD 2024)
ynakano
1
380
Composed image retrieval for remote sensing
satai
2
240
[輪講] Transformer Layers as Painters
nk35jk
4
660
ドローンやICTを活用した持続可能なまちづくりに関する研究
nro2daisuke
0
140
Featured
See All Featured
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
4
410
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.7k
Site-Speed That Sticks
csswizardry
4
380
Speed Design
sergeychernyshev
27
790
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
59k
Rebuilding a faster, lazier Slack
samanthasiow
80
8.8k
Become a Pro
speakerdeck
PRO
26
5.1k
Reflections from 52 weeks, 52 projects
jeffersonlam
348
20k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
A Philosophy of Restraint
colly
203
16k
We Have a Design System, Now What?
morganepeng
51
7.4k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
233
17k
Transcript
Multi-Wavelength (ISM) Dust Signatures Karl D. Gordon Astronomer STScI, Baltimore,
MD ISM*@ST Group Meeting 25 Oct 2021
[email protected]
@karllark2000 karllark@github
Outline • Extinction – Features and Continuum – Polarization –
Splitting into absorption & scattering • Emission – Non-thermal & Thermal • Biased, incomplete, ….
Dust in Extinction
X-Ray
See L. Corrales Talk
2175 A FUV Rise 3.4 μm NIR Features? Sil 10
μm Sil 10 μm MIR Optical Features
Far-UV Rise
Fitzpatrick & Massa 1988, ApJ, 328, 734
Gordon, Cartledge, & Clayton 2009, ApJ, 705, 1320
2175 A Extinction Bump
Stecher 1965, ApJ, 142, 1683
Stecher 1966, ApJ, 157, 125
2175 A Properties Fitzpatrick & Massa (1986, ApJ, 307, 286)
Cardelli, Clayton, & Mathis 1988, ApJ, 329L, 33; 1989, ApJ,
345, 245
Broad Optical Extinction Bumps
Optical Features (origin unknown) Massa, Fitzpatrick, Gordon, et al. 2020,
ApJ, 891, 67 Centers: 4370, 4870, & 6300 A Widths: ~10% Two blue correlate w/ 2175 A
3.4 micron HAC feature
3.4 micron HAC Hydrogenated Amorphous Carbon (aliphatic bonds) Pendelton &
Allamandola (2002, ApJS, 138, 75
10 & 20 micron Silicate Features
Gordon et al. (2021, ApJ, 916, 33)
10 & 20 micron Silicates Chiar & Tielens (2006, ApJ,
637, 774)
Crystalline Silicate Fraction ~0.2% (or zero) Kemper, Viernd, & Tielens
(2004, ApJ, 609, 826) Amorphous Crystalline
Aromatic (PAH) features in Absorption
None
None
None
Ices
None
Diffuse Interstellar Bands (Dust?) Ran out of time to get
slides
Continuum
None
DGFit
Extinction Polarization
None
None
None
None
None
Splitting Extinction
Reflection Nebulae IC 435 NGC 7023 BVR UIT 2500 A
BVR The Pleiades
Dark Clouds Thumbprint (DSS) Bok Globule (DSS2) Witt et al.
1990
Diffuse Galactic Light NUVIEWS 1740 A; Schiminovich 2001 Pioneer 10/11
Blue Toller 1981; Gordon et al. 1997
Dust in Emission Non-thermal
Blue Luminescence
None
Extended Red Emission
Photoluminescence from HAC films Reflection Nebula NGC 7023
None
Dust in Emission Thermal Equilibrium and Non-equilibrium
Non-Equilibrium Continuum
None
Aromatic (PAH) Features
Aromatic (PAH) Features Werner, M. et al. 2004, ApJS, 154,
309
Discovery 1973 Observations made with U. of MN/UCSD 60” on
Mt. Lemon and KP 50” with cooled filter-wheel spectrometer (R = 67) 11.3 mm feature too broad to be a atomic emission line
1st Proposal of Aromatics 1981
Aromatic versus Aliphatic Aromatics have benzene rings 3.3 mm feature
Aliphatics do not have benzene rings 3.4 mm feature Furton, D. et al. 1999, 526, 752 Lab IRS6 (Gal. Center) Cyg OB2 No. 12
Polycyclic Aromatic Hydrocarbons Hudgins, D. M. & Allamandola, L. J.
Astrophysics of Dust, ASP Conference Series, Vol. 309, Eds. Adolf N. Witt, Geoffrey C. Clayton and Bruce T. Draine., 665 Lab. Data Orion (ISO)
Equilibrium Thermal
2003, A&A, 407, 159
None
None
None
Other
Dorschner et al. 1995, A&A, 300, 503 Gordon et al.
2000, ApJ, 544, 859 Olivine Silicates Fe Feature @ ~1.5 micron? Emission spectrum from reflection nebula NGC 7023 NW filament
Thanks
Indirect Measures
Milky Way Depletions Jenkins (2009, ApJ, 700, 1299)