the hubble space telescope (hst): one user’s view chris sneden speaking for my friends &...
TRANSCRIPT
![Page 1: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/1.jpg)
The Hubble Space Telescope (HST): one
user’s view
Chris Sneden
Speaking for my friends & colleagues:
John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers (Michigan State), Francesca Primas (ESO)
![Page 2: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/2.jpg)
Pictures of HST
Very connected with the fate of the shuttle!
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HST: a thumbnail history?
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HST has been a spectacular success!
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Recent (alas!) HST history
Late last week
Yester-day
![Page 6: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/6.jpg)
Back to my comfort zone: using HST while it still lives
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What can stellar astronomers learn from cool HST images?
![Page 8: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/8.jpg)
Halo stars are at the outposts of our Milky Way and other galaxies
You are here
(sort of)!
![Page 9: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/9.jpg)
My goal: to use the chemical compositions of stars to help explain the creation of all the
elements in the Periodic Table
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I
ScCaK
Xe
Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
H
BeLi
MgNa
Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
RaFr
BaCs
Rf Db Sg Bh Hs Mt Uun Uuu Uub
CB O F Ne
ArAl Si P S Cl
N
He
La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
Atomic Numbers1
3
11
19
37
55
87
57
89
2
10
18
36
54
86
71
103
![Page 10: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/10.jpg)
Remember: Periodic Table elements are created in stellar nucleosynthesis
Nuclear fusion reactions in the hot & dense interiors of stars synthesis nearly all elements
AND they release energy that finally becomes the light we see from stars
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To deduce the chemical compositions of stars, we must
analyze their spectra
The basic concept
Fortunately, atoms in stellar atmospheres absorb light at selected colors (wavelengths), giving away their existence
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McDonald’s HET and its High Resolution
Spectrograph (HRS) are great tools to study the abundances of SOME
elements in stars
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Some elements cannot be observed from the ground! They only have
transitions in the UV
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I
ScCaK
Xe
Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
H
BeLi
MgNa
Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
RaFr
BaCs
Rf Db Sg Bh Hs Mt Uun Uuu Uub
CB O F Ne
ArAl Si P S Cl
N
He
La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
Atomic Numbers1
3
11
19
37
55
87
57
89
2
10
18
36
54
86
71
103
![Page 14: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/14.jpg)
Overall HST schematic I
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Overall HST schematic II
![Page 16: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/16.jpg)
Overall HST schematic III
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HST STIS: just like any simple spectrograph!
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Life isn’t fair: a typical HST beautiful image
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My beautiful HST STIS image?
![Page 20: The Hubble Space Telescope (HST): one user’s view Chris Sneden Speaking for my friends & colleagues: John Cowan (Oklahoma), Jim Truran (Chicago), Tim Beers](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf8b1a28abf838c8b249/html5/thumbnails/20.jpg)
But there really is a treasure here …
Blowup this and study
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And you cannot do this without HST