p.galeotti arequipa 2008 1 - iapht.unito.it · espulsione di gas da una giovane ... urano....

P.Galeotti Arequipa 20081

P.Galeotti Arequipa 2008 2


Il Sole1.000 voltepiù

grande

diGiove

1.000.000di volte più

grandedella Terra


Presenter

Presentation Notes

Hubble Heritage image of Sagittarius Star field. Note that along the horizontal axis, the image is 13.3 light-years across. Ask audience what they notice by looking at this image. Hopefully they will notice the different colors. You can then ask them what the different colors mean [different temperatures] Image from http://heritage.stsci.edu/public/Oct22/sgr1/sgrtable.html.

P.Galeotti11

Arequipa 2008

Piero Galeotti, Università di Torino Sistemi solari 12

nebulosatesta dicavallo

P.Galeotti13

Arequipa 2008

Piero Galeotti, Università di Torino Sistemi solari 14

Le stelle neonate non sono tranquille

Espulsione di gas da una giovane stella binaria

Presenter

Presentation Notes

The young binary system XZ Tau. Gas from an unseen disk around one or both of the stars is channeled through magnetic fields surrounding the binary system and then is forced out into space at nearly 300,000 miles per hour (540,000 kilometers per hour). This outflow, which is only about 30 years old, extends nearly 60 billion miles (96 billion kilometers). From http://oposite.stsci.edu/pubinfo/PR/2000/32/pr-photos.html


Le pleiadi


5 pianetiallineati

MercurioVenereMarteGiove

Saturno


Mercurio

Piero Galeotti, Università di Torino

Sistemi solari 19


Venere


Marte


Sistemi solari 22

Il monteOlimpo


Sistemi solari 23

Eccoci…stiamoarrivando!


Sistemi solari 24


Sistemi solari 25


Giove


Saturno


Sistemi solari 28

Anello F

Anello A


Sistemi solari 29

Il problema del gregge di pecore …

·

·


Sistemi solari 30


Sistemi solari 31


Sistemi solari 32


Un esperimento di relatività

generale

B.Bertotti, L.Iess, P.Tortora hanno effettuato un originale esperimento per la misura della deviazione del segnale causata dal campo gravitazionale del Sole.

Si è avuta conferma della teoria della relatività generale con un’accuratezza di 20 parti per milione, 50 volte meglio del precedente limite.


Urano


Nettuno


Distance

(AU)

Radius

(Earth's)

Mass

(Earth's)

Rotation

(Earth's)

# Moons Orbital

Inclination

Orbital

Eccentricity

Density

(g/cm3)

Sun 0 109 332,8

00 25-36* 9 --- --- 1.410

Mercury 0.39 0.38 0.05 58.8 0 7 0.2056 5.43

Venus 0.72 0.95 0.89 244 0 3.394 0.0068 5.25

Earth 1.0 1.00 1.00 1.00 1 0.000 0.0167 5.52

Mars 1.5 0.53 0.11 1.029 2 1.850 0.0934 3.95

Jupiter 5.2 11 318 0.411 16 1.308 0.0483 1.33

Saturn 9.5 9 95 0.428 18 2.488 0.0560 0.69

Uranus 19.2 4 15 0.748 15 0.774 0.0461 1.29

Neptune 30.1 4 17 0.802 8 1.774 0.0097 1.64

Pluto 39.5 0.18 0.002 0.267 1 17.15 0.2482 2.03

http://www.eoascientific.com/prototype/newcampus/space/terms.html#astunit

http://www.eoascientific.com/interactive/weight_mass_volume_density_gravity/weight_mass_volume_density_gravity.html

http://www.eoascientific.com/prototype/newcampus/space/10/sun/sun1.html

http://www.eoascientific.com/prototype/newcampus/space/11/mercury/mercury1.html

http://www.eoascientific.com/prototype/newcampus/space/11/venus/venus1.html

http://www.eoascientific.com/prototype/newcampus/space/11/earth/earth1.html

http://www.eoascientific.com/prototype/newcampus/space/11/mars/mars1.html

http://www.eoascientific.com/prototype/newcampus/space/11/jupiter/jupiter1.html

http://www.eoascientific.com/prototype/newcampus/space/11/saturn/saturn1.html

http://www.eoascientific.com/prototype/newcampus/space/11/uranus/uranus1.html

http://www.eoascientific.com/prototype/newcampus/space/11/neptune/neptune1.html

http://www.eoascientific.com/prototype/newcampus/space/11/plutocharon/plutocharon1.html

Johannes Kepler 1571-1630

Galileo Galilei

1564-1642

Isaac Newton 1642-1727


Tokyo Science Museum, 19/09/0939


L'uomo e il cosmo 40

Keplero

41

108

160 180 2000

Galileo

Solo telescopi

Telescopi con fotografia e elettronica

106

104

102

Huy

gens

eyep

iece

Slow

f r

atios

Shor

t’s

21.5

”

Her

sche

ll’s

48”

Ross

e’s

72”

Phot

ogra

phy

Mou

nt W

ilson

100

”

Mou

nt P

alom

ar 2

00”

Soviet

6-m

1010

CCDs HST

JWST

Telescope collecting area(neked eye = 1)



Presenter

Presentation Notes

This slide indicates the rate of increase of observing capability as it evolved since Galileo first used a telescope to observe the heavens. The striking result here is that since Galileo’s initial advance, no other advance in technology has been proportionately as great until HST. One of the reasons HST has been so important to astronomy is that, like Galileo’s telescopes, it advanced the state of the art by nearly two orders of magnitude. Notice that the HST line is sloped upward. Every time we upgrade the telescope with new instruments through servicing, we increase the capability, making HST a continuously improving facility. It is much cheaper to upgrade the instruments than to build a new telescope, and the gains can be great, as shown in the figure. The right hand bar shows the expected gains to come from NGST, essentially equal to the gains from Hubble.


eclissetotaledi Sole


Transito di Venere sul Sole


transito di un pianeta sul discodella sua stella


HD 209458


Il primo pianeta extrasolare venne scoperto nel 1995 da Mayor e Queloz, all'Osservatorio di Ginevra, intorno alla stella 51 Pegasi. Ora sono oltre 400 i sistemi planetari extrasolari scoperti


2

2

1abe −=


http://exoplanets.org/esp/47uma/neworbits_sm.jpg


Upsilon Andromedae


55 Cnc



L'acqua è la sorgente della vita


Botticelli, 1484 -

La nascita di Venere



«…Potrei star rinchiuso in un guscio di noce e credermi re dello spazio infinito …»

William Shakespeare (1564-1616)

p.galeotti arequipa 2008 1 - iapht.unito.it · espulsione di gas da una giovane ... urano....

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