1 / 36

G A LA X I E S

G A LA X I E S. D H M H T R A R H G O P O U L O U Max- Planck- Institut fuer extr. Physik and Astrophysics Dept, University of Oxford. Eisagwgh Merikoi orismoi Morfologikh taxinomhsh galaxiwn Tupoi galaxiwn Galaxiake  sugkrousei  Schmatismo  kai exelixh

vielka-diaz
Download Presentation

G A LA X I E S

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. G A LA X I E S D H M H T R A R H G O P O U L O U Max- Planck- Institut fuer extr. Physik and Astrophysics Dept, University of Oxford

  2. Eisagwgh Merikoi orismoi Morfologikh taxinomhsh galaxiwn Tupoi galaxiwn Galaxiake sugkrousei Schmatismo kai exelixh Galaxie - astrikh dhmiourgia

  3. Gh  = a / r r = a /p (rad) r = 206265 a / p r a p Hlio Eto fwto (light year): h apostash pou dianuei to fw (u = 3 x 10 5km/s) se ena crono 1 light year = 9.46 x 10 12km Parsek (parsec) : isodunamei me thn apostash sthn opoia h aktina peristofhV thV Gh isodunamei me 1 lepto tou toxou (1 arcsec) 1pc = 3.26 eth fwtoV a : astronomikh monada (apostash Hliou -Gh)

  4. Merikoi ariqmoi: a-kentaurou: parallaxh 0.75 deut. tou toxou apostash 1.33 pc. HlioV: 8.5 kpc apo to kentro tou galaxia GalaxiaV - Andromeda: 0.7 Mpc QSOs 3000 Mpc = 9000 000 000 - 10 000 000 000 eth fwtoV

  5. Galaxia Apotelountai apo astere (merike x 1000000000) mesoastriko aerio, mesoastrikh skonh Barutike dunamei Megeqh: 10000 -- 20000 eth fwto Fwteinothta: 10 9 -- 10 14 L  Smhnh galaxiwn (1000000 -- 2000000 eth fwto) 70% einai speiroeidei omoioi me ton diko ma Galaxia

  6. Charles Messier 1700’s Parathrhse gia prwth fora nefelwmata pou den htan planhteV oute astereV PrwtoV katalogoV galaxiwn (103) Herschel (1792-1871) prwto katalogo galaxiwn First General Catalogue Isaac Newton Telescope

  7. Galaxiakh domh koinh gia olouV touV galaxieV

  8. Taxinomhsh kata Hubble

  9. M94-Sa M81-Sb M101-Sc M87-E0 M110-E5 M86-S0 M95-SBa M91-SBb M61-SBc Kanonikoi SpeiroeideiV Elleiptikoi Speiroeidei me rabdo

  10. Elleiptikoi schma peplatusmenou sfairoeidou, lamprothta ellatwnetai apo to kentro pro to ceilo tou diskou. Analoga me th fainomenh platunsh • Z = 10 (a-b) /a Opou a kai b megalo kai mikro axona E0, E1, .. E7 (z=7) E7 E4 E0

  11. Paradeigmata elleiptikwn galaxiwn Fwtografie me to HST ... merike fore mporoume na doume ta asteria eno galaxia (M32)

  12. Speiroeidei galaxie Kanonikoi Rabdwtoi Lamproi bracione, summetrikoi w pro to kentro Kanonikoi: bracione xekinoun ap euqeia apo Ton purhna (Sa, Sb, Sc) Rabdwtoi: bracione xekinoun apo ta akra mia Rabdou (Sba, SBb, SBc) Analoga me to anoigma twn bracionwn kai thn ufh tou.

  13. HST –WFPC2 GALAXY NGC 4639 NGC 1365 M100 Paradeigmata speiroeidwn galaxiwn

  14. Anwmaloi galaxie Cwri kanonikh domh IrrI : den ecoun purhna, omoioi me Sc To astriko periecomeno omoio me auto twn speiroeidwn piqanh exelixh twn anomalwn se speiroeidh ; Irr II: idiomorfie twn IrrI Akanonisto schma amorfh domh cwriV speireV pollapleV peroceV astrikhV dhmiourgiaV

  15. NGC 2363 HST-WFPC2

  16. Taxinomhsh me bash th qesh tou ston ouranio qolo

  17. Smhnh Galaxiwn Abell 0957

  18. Oi geitonikoi galaxie se apostash 1000 kpc apo to diko ma galaxia

  19. Sugkrousei Galaxiwn

  20. Allhlepidrasei metaxu galaxiwn Arp 273 : Oi sugkrouomenoi galaxie anhkoun ston asterismo thV Andromeda. 200 ekat. eth fwtoV. NE galaxia : diataraxh tou diskou alla kanoniko purhna SW galaxia: nuclear Starburst (LINER) Eikona apo to NRAO (yeudo-crwmata)

  21. Sugkroush duo galaxiwn me apotelesma thn enarxh entonh astrikh dhmiourgia sto kentro (HST optical, near-infrared composite image) The Carthweel Galaxy : Entone sugkrousei (daktulioV 150000 e.f. diametro!) (tacuthta 200000 milia thn wra!) 500 ekat. eth fwtoV makria daktulio to kentro tou galaxia

  22. H skhnh tou egklhmato Me bash parathrhsei sta radiokumata h poreia tou galaxia pou prokalese th sugkroush mporei na diereunhqei

  23. Oi galaxieV pou apartizoun to susthma Antenna 63 ekat eth fwtoV, 1 000 smhnh newn asterwn

  24. Barnes & Hernquist : ProswmoiwseiV sugkrousewn se megalouV HU

  25. Barnes & Hernquist

  26. diaspash stroformh stroformh Pw schmatizontai oi galaxie ; Megalh maza pou diaspatai (Monolithic Collapse) Meta apo 1x10 7 cronia

  27. Mikre sugkentrwsei ulikou pou sunenwqhkan me to perasma tou cronou (Hierarchical Model for Formation)

  28. M. Steinmetz

  29. Exelixh twn galaxiwn

  30. Ta crwmata twn galaxiwn

  31. Pw oi galaxie dhmiourgoun astere

  32. RuqmoV astrikhV dhmiourgiaV ElleiptikoV galaxiaV (palaioi astereV ston purhna) cronoV SpeiroeidhV galaxiaV purhnaV kokkinoV = palaioi astereV diskoV mple = neoi astereV RuqmoV astrikhV dhmiourgiaV cronoV

More Related