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Messier 81 (NGC 3031 or Bode's Galaxy refering to Johann Elert
Bode who discovered it) is a spiral galaxy about 12 million
light-years away in the constellation Ursa Major while the
Messier 82 (NGC 3034, Cigar Galaxy), about five times more
luminous than the whole Milky Way, is a starburst galaxy near to
M81. NGC 3077 is a small galaxy, also member of the M81 Group.
Despite looking much like an elliptical galaxy, shows wispy
edges and scattered dust clouds that are probably a result of
gravitational interaction with its larger neighbors.
Messier
81 (NGC 3031 edo Boderen Galaxia bezala ezaguna, Johann Elert
Bodek lehen aldiz aurkitu zuenez bere oroimenez izendatua)
galaxia espirala da gugandik 12 milioi argi-urtera kokatzen
delarik Hartz Handia konstelazioan. Messier 82 (NGC 3034 edo
Zigarro Galaxia) berriz, Esne Bidea baino bost aldiz
distiratsuagoa da, M81 galaxiatik gertu leherketa prozesuan
dagoen galaxia da. NGC 3077 galaxia txikia da, M81
galaxia-multzoko kide bat. Nahiz eta galaxia eliptikoa dirudien
izar-hodei barreiatuak ditu bere baitan, bere bizilagun
handiekiko grabitazio iterezioen ondorioa izan daitekela uste
da.
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Barnard's Loop (Sh 2-276) is an emission nebula in the
constellation of Orion. The loop takes the form of a large arc
centered approximately on the Orion Nebula (M42) and it's part
of the Orion Molecular Cloud Complex. The stars within the Orion
Nebula are believed to be ionizing the Barnard's loop. M78 (at
lower right) is a diffuse reflection nebula and belongs to the
Orion Molecular Cloud Complex, lies about 1600 light years
distant. The dark nebulae LDN1622 can be seen at upper left in
the image.
Barnard begizta
(Sh2-276) Orion konstelazioan dagoen igortze nebulosa da.
Begiztak arku itxura dauka, gutxi gorabehera Orion nebulosan
(M42) du bere erdigunea eta Orion Hodei Molekularraren zati bat
da. Orion nebulosan zehar dauden izarrek Barnard begizta
ionizatzen dutela uste da. M78 (behean eskuin aldean)
islada-nebulosa hedatsua da, Orion Hodei Molekularraren zati bat
osatzen duelarik gugandik 1600 argi urtera dago. LDN1622 hodei
iluna goian eskuin aldean ikus daiteke argazkian.
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Witch Head Nebula (IC 2118) is a faint reflection nebula in the
Eridanus constellation at about 900 light years. Still to be
determined, its believed to be an ancient supernova remnant or
gas cloud illuminated by nearby supergiant star Rigel in Orion.
Blue color is determined by the nature of the dust particles
contained in the nebula by reflecting better blue than red.
Radio observations confirmed substantial carbon monoxide
emission throughout parts of the nebula, an indicator of the
presence of molecular clouds where stars are forming.
Sorgin Buru
nebulosa (IC 2118) Eridano konstelazioan 900 argi-urtera dagoen
distira ahuleko islada-nebulosa da. Oraindik argitzeke
dagoen arren gertu dagoen Orion konstelazioko Rigel izar
erraldoiak argiztatzen duen, aintzinako supernoba baten
hondarrak edo izar hodeia dela uste da. Kolore urdina
nebulosaren partikulen izaerak ematen dio, kolore urdina gorria
baino hobeto islatuz. Irrati uhin bidezko behaketek karbono-monoxidozko
emisio nabarmena baieztatu dute nebulosaren gune zehatzetan, non
izarrak sortzen ari diren hodei molekularren presentziaren
adierazle.
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Remaining in the Taurus Molecular Cloud, this image covers the
west part of this big complex. Many dark nebulae can be seen
there, B22 (center left), the Little Flame IC2087, B18 at lower
right and B128 upper right.
Taurus Hodei Molekularran jarraituz, irudiak konplexuaren
mendebaldeko nebulosa ilunak argazkitzen ditu, B22 (erdian ezker
aldean), IC2087 nebulosa txikia, B18 behean eskuin aldean eta B18 goian
eskuin aldean.
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At
450 light-years distant, B7 (dark nebula center-upper), B10 (dark
nebula), LDN782 (blue nebula at center), LDN1495 (large complex
of dark nebulae in diagonal containing several darks nebulae,
B213, B216, B217),
VdB27 (yellowish nebula at left of B7), are part of the extense
Taurus molecular cloud. E. E. Barnard (1857-1923)
discovered many of the dark nebulae in this region published in
plate 5 on his catalog A Photographic Atlas of Selected Areas of
the Milky Way.
450
argi-urtera, B7 (nebulosa iluna, irudian goi erdialdean), B10
(nebulosa iluna), LDN782 (nebulosa urdina erdialdean), LDN1495
(nebulosa konplexu luzea diagonalki non nebulosa ilun ugari
biltzen dituen, B213, B216, B217), VdB27 (nebulosa horixka B7tik
ezkerretara)
Taurus hodei molekularraren zati bat dira. E. E. Barnard-ek
(1857-1923) eremu honetan zenbait nebulosa ilun aurkitu zituen
bere katalogoan
A
Photographic Atlas of Selected Areas of the Milky Way-ko
5. argazki plakan argitaratuz.
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Many targets can be seen in this widefield image taken on
Cepheus. Brighter objects are, upper left LDN1250 and LDN 1250
molecular nebulae followed by at lower right by LDN 1235
molecular nebulae, VdB149 and VdB150 nebulae and PGC 67671
galaxy.
Objektu ugari ikus
daitezke Zefeon kokaturiko eremu zabaleko irudi honetan.
Distiratsuenak, goian ezker aldean LDN1250 eta LDN1251 hodei
molekularrak, behean eskuin aldean LDN1235 hodei molekularra,
VdB149 eta VdB150 nebulosak eta PCG67671 galaxia.
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A molecular cloud, discovered by IRAS satellite in 1984, is a
type of interstellar cloud with density and size enough to
permit the formation of molecules. This image centered at
NGC7497 galaxy in Pegasus, the MBM54 molecular cloud can be seen
over a 3.5º square field of view. While NGC7497 galaxy lies at
60 milion light years, the MBM54 is located in the
"neighborhood" at only 900ly
at
high galactic latitudes
in the Milky Way.
Hodei molekularra (IRAS sateliteak 1984an aurkitua) izar arteko
hodei mota bat da non bertan molekulak sortzeko nahikoa
dentsitate eta tamaina dituen. Irudiaren erdian NGC7497 galaxia
ikus daiteke Pegaso konstelazioan, MBM54 hodei molekularra 3.5
gradu karratu dituen irudi-eremu osoan zehar ikus daiteke.
NGC7497 galaxia 60 milioi argi-urtera dagoen bitartean MBM54
hodei molekularra 900 argi-urtera besterik ez dago, gure
galaxiako latitude altuetan.
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The North America Nebula (NGC7000) and the Pelican Nebula (IC
5070) are parts of the same interstellar cloud of ionized
hydrogen (H II region). Its shape as we see is determined by a
band of interstellar dust that lies between the nebula and Earth
that absorbs the light of stars and nebula behind it. The
distance of the nebula complex and the star responsible for
ionizing the hydrogen are not exactly known. If would be Deneb,
which is located nearby in this region of the sky, the nebula complex would be at about 1800 light years from the
Earth and its size would be 100 light years. The nebula was
discovered by William Herschel on October 24, 1786.
Ipar Amerika
Nebulosa (NGC7000) eta Pelikano Nebulosa (IC 5070) izar-arteko
ionizatutako (H II eremua) hodei beraren zati dira. Ikusten
dugun nebulosaren itxura, Lurra eta nebulosa konplexuaren artean
dagoen izar-arteko hauts banda ilun batek zehazten du, gugana
iristen diren izar argi eta nebulosaren argia xurgatuz eta
estaliz. Ez da zehazki ezagutzen nebulosa konplexuaren
distantzia Lurrarekiko ezta nebulosa ionizatzen duen izarra.
Eremutik gertu dagoen Deneb izango balitz, nebulosa konplexua
Lurrarekiko 1800 argi urtera kokatuko litzateke eta bere tamaina
100 argi urtekoa litzateke. Nebulosa William Herschel-ek aurkitu
zuen 1786ko urriaren 24an.
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The Sagittarius Star Cloud or Delle Caustiche, is a large Milky
Way star cloud in Sagittarius constellation. It's a part of the
Sagittarius or Sagittarius-Carina arms of the Milky Way galaxy,
is 600 light-years wide and lies at a distance of 10000
light-years from us. The Sagittarius Star Cloud has an apparent
magnitude of 4.6 so can be seeing visually from dark skies.
Sagitario izar
hodeia (Delle Caustiche bezala ezaguna ere) Sagitario
konstelazioan izarrez osatutako multzo handia da, Esne-Bidea
galaxiako Sagittarius edo Sagittarius-Carina besoan kokaturik,
gugandik 10000 argi urtera dago eta 600 argi-urteko zabalera
dauka. Izar hodeiaren magnitudea 4.6koa da beraz begi hutsez
ikus daiteke zeru ilunetatik.
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IC4592 (Zaldiburu nebulosa urdinaz bezala ezaguna ere) hauts
finez osatutako hodei konplexua da. Berez ez litzatekeena
ikusiko, gertu dagoen Nu Scorpii izar distiratsuak argiztatzen
du eta isladapen bidez nebulosa urdin bezala ikusgai bihurtuz.
Gugandik 400 argi-urtera kokatzen da eta 40 argi-urteko
diametroa du. Behean erdi aldean IC4601 nebulosa urdina ikusten
da.
The
IC4592 (also known as the Blue Horsehead Nebula) is a molecular
cloud complex, made up by fine dust that can be visible as blue
reflection because is lit by bright nearby Nu Scorpii star. Has
40 light years diameter at a distance of 400 light years from
us. At lower center, the IC4601 blue reflection nebula is visible.
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All the images in this site
are © copyright by Iñaki Lizaso. Any use of these images without the
prior written consent of the autor is strictly prohibited. Contact
Iñaki Lizaso at
edif300@yahoo.es
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Web gune
honetako irudi guztiek Iñaki Lizasoren © copyright dute. Irudi hauen
edozein motako erabiliera egilearen idatzizko baimenik gabe zorrozki
debekatua dago. Jar zaitez Iñaki Lizasorekin harremanetan
edif300@yahoo.es
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Iñaki Lizaso |
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