Lista över mörka nebulosor
Detta är en lista över mörka nebulosor.
| Namn | Bild | Stjärnbild | Övrigt | Källa |
|---|---|---|---|---|
| Kolsäcken |  | Södra korset | [1] | |
| Hästhuvudnebulosan (Barnard 33) |  (c) Ken Crawford, CC BY-SA 3.0 | |||
| Barnard 68 |  | |||
| Barnard 86 |  | Skölden | Är en Bok-globul | [2] |
| Barnard 72 |  | |||
| LDN 483 |  | Ormen | [3] | |
| LDN 1768 |  | |||
| Lupus 3 | Skorpionen | [4] | ||
| Lupus 4 |  |
- E Nebula (Barnard 142 and 143)
- Le Gentil 3
- Sandqvist 111
- Sandqvist 112
- Sandqvist 150
- Sandqvist 155
- Sandqvist 157
- Sandqvist 166
- Sandqvist 169
- Sandqvist 171
- Sandqvist 178
- Bernes 157
- SL 41
- LDN 43
- LDN 193
- LDN 206
- LDN 208
- LDN 535
- LDN 615
- LDN 621
- LDN 624
- LDN 673
- LDN 688 and LDN 687.
- LDN 695
- LDN 749
- LDN 762
- LDN 763 and LDN 764.
- LDN 750
- LDN 771
- LDN 780
- LDN 790
- LDN 792
- LDN 793
- LDN 794
- LDN 795
- LDN 796
- LDN 798
- LDN 866
- LDN 898
- LDN 921
- LDN 923 and LDN 924.
- LDN 925
- LDN 930
- LDN 935
- LDN 940
- LDN 950
- LDN 954
- LDN 958
- LDN 972
- LDN 1010
- LDN 1020
- LDN 1066
- LDN 1073
- LDN 1083
- LDN 1105
- LDN 1109
- LDN 1139
- LDN 1141
- LDN 1142
- LDN 1150
- LDN 1153, LDN 1143, och LDN 1151 är del av Barnard 169.
- LDN 1206
- LDN 1207
- LDN 1208
- LDN 1209
- LDN 1214
- LDN 1154
- LDN 1210
- LDN 1211
- LDN 1215
- LDN 1216
- LDN 1235
- LDN 1378
- LDN 1379
- LDN 1380
- LDN 1381
- LDN 1382
- LDN 1383
- LDN 1384
- LDN 1385
- LDN 1386
- LDN 1450,A (Barnard 205) ,B,C,och E del av NGC 1333.
- LDN 1468
- LDN 1470
- LDN 1510
- LDN 1530
- LDN 1630
- LDN 1635
- LDN 1641
- DOBASHI 264
- DOBASHI 294
- DOBASHI 298
- DOBASHI 318
- DOBASHI 2251
- DOBASHI 2255
- DOBASHI 2511
- DOBASHI 2666
- DOBASHI 2680
- DOBASHI 2682
- DOBASHI 3210
- DOBASHI 3215
- DOBASHI 3368
- DOBASHI 3381
- DOBASHI 3387
- DOBASHI 3391
- DOBASHI 3413
- DOBASHI 3937
- DOBASHI 4063, DOBASHI 4064, och DOBASHI 4067 del av LDN 1399.
- DOBASHI 4076 och DOBASHI 4073 del av LDN 1405.
- DOBASHI 4069
- DOBASHI 4202
- DOBASHI 6346
- TGU H442 P3
- TGU H442 P5
- TGU H444 P1
- TGU H445
- TGU H469 P18
- TGU H482 P1
- TGU H488 P2
- TGU H632
- TGU H1085 P3
- TGU H1085 P12
- TGU H1198 P4
- TGU H1210
- PGCC G141.48+01.45
- PGCC G160.12-18.31
- PGCC G160.85-35.85
- PGCC G161.29-36.02
- PGCC G161.67-35.92
- PGCC G161.54-38.48
Barnard objekt
- Barnard 1 - Perseus molekylärt moln komplex
- Barnard 5
- Barnard 6
- Barnard 7
- Barnard 8
- Barnard 11
- Barnard 12
- Barnard 13
- Barnard 14
- Barnard 15
- Barnard 18
- Barnard 20
- Barnard 21
- Barnard 24
- Barnard 25
- Barnard 28
- Barnard 30
- Barnard 32
- Barnard 33 - Hästhuvudnebulosan
- Barnard 34
- Barnard 35
- Barnard 35
- Barnard 36
- Barnard 37
- Barnard 40
- Barnard 41
- Barnard 42
- Barnard 43
- Barnard 44
- Barnard 45
- Barnard 51
- Barnard 62
- Barnard 63
- Barnard 64
- Barnard 67 - del av Pipe Nebulosan
- Barnard 68 - möjligtvis den närmsta 400 ljusår
- Barnard 72 - Ormnebulosan
- Barnard 75
- Barnard 80
- Barnard 81
- Barnard 84
- Barnard 84
- Barnard 85 - mörk del av Trifid Nebulosan
- Barnard 86
- Barnard 87 - Papegojhuvudnebulosan
- Barnard 88 - mörk del av Lagunnebulosan
- Barnard 90
- Barnard 92 - Svartahåletnebulosan
- Barnard 93
- Barnard 94
- Barnard 95
- Barnard 95
- Barnard 97
- Barnard 100
- Barnard 103
- Barnard 104
- Barnard 107
- Barnard 108
- Barnard 108
- Barnard 109
- Barnard 112
- Barnard 113
- Barnard 116
- Barnard 119
- Barnard 126
- Barnard 128
- Barnard 130
- Barnard 133
- Barnard 136
- Barnard 138
- Barnard 140
- Barnard 141
- Barnard 142 - E Nebulosa
- Barnard 143 - E Nebulosa
- Barnard 144
- Barnard 145
- Barnard 146
- Barnard 147
- Barnard 150
- Barnard 152
- Barnard 153
- Barnard 155
- Barnard 157
- Barnard 159
- Barnard 163
- Barnard 164
- Barnard 168
- Barnard 168 - del av IC 5146
- Barnard 169
- Barnard 171
- Barnard 175
- Barnard 202
- Barnard 203
- Barnard 210
- Barnard 219
- Barnard 223
- Barnard 225
- Barnard 229
- Barnard 230
- Barnard 234
- Barnard 241
- Barnard 243
- Barnard 244
- Barnard 245
- Barnard 246
- Barnard 250
- Barnard 251
- Barnard 252
- Barnard 254
- Barnard 256
- Barnard 257
- Barnard 259
- Barnard 261
- Barnard 265
- Barnard 266
- Barnard 268
- Barnard 270
- Barnard 272
- Barnard 275
- Barnard 276
- Barnard 277
- Barnard 279
- Barnard 280
- Barnard 281
- Barnard 287
- Barnard 297
- Barnard 303
- Barnard 308
- Barnard 310
- Barnard 312
- Barnard 312
- Barnard 314
- Barnard 320
- Barnard 321
- Barnard 326
- Barnard 327
- Barnard 330
- Barnard 331
- Barnard 333
- Barnard 337
- Barnard 338
- Barnard 339
- Barnard 341
- Barnard 343
- Barnard 344
- Barnard 346
- Barnard 346
- Barnard 347
- Barnard 352
- Barnard 354
- Barnard 356
- Barnard 357
- Barnard 361
- Barnard 363
- Barnard 365
- Barnard 366
Se även
Källor
- Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, List_of_dark_nebulae, tidigare version.
Media som används på denna webbplats
Författare/Upphovsman: ESO, Licens: CC BY 4.0
This image from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile, shows the bright star cluster NGC 6520 and its neighbour, the strangely shaped dark cloud Barnard 86. This cosmic pair is set against millions of glowing stars from the brightest part of the Milky Way — a region so dense with stars that barely any dark sky is seen across the picture.
(c) Ken Crawford, CC BY-SA 3.0
Horsehead Nebula (also known as Barnard 33 in emission nebula IC 434) is a dark nebula in the constellation Orion.
The image is a frame mosaic taken with 5 different filters, standard Red – Green – Blue with details enhanced with narrowband data of Hydrogen-alpha (Hα) and O III. The Hα was color-mapped to red and the O III to teal. So it is a representative color image consisting of over 900 minutes of exposure time.
Författare/Upphovsman: ESO, Licens: CC BY 4.0
This image shows a colour composite of visible and near-infrared images of the dark cloud Barnard 68 . It was obtained with the 8.2-m VLT ANTU telescope and the multimode FORS1 instrument in March 1999. At these wavelengths, the small cloud is completely opaque because of the obscuring effect of dust particles in its interior.
Författare/Upphovsman: ESO, Licens: CC BY 4.0
The Wide Field Imager (WFI) on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile captured this view of dark cloud Lupus 4 blotting out background stars. Lupus 4 is a dense pocket of gas and dust where new stars are expected to form. The cloud is located about 400 light-years away from Earth, on the border between the constellations of Lupus (The Wolf) and Norma (The Carpenter's Square).
Författare/Upphovsman: ESO, Licens: CC BY 4.0
The dark patch snaking across this spectacular image of a field of stars in the constellation of Ophiuchus (The Serpent-bearer) is not quite what it appears to be.
Although it looks as if there are no stars here, they are hidden behind this dense cloud of dust that blocks out their light. This particular dark cloud is known as LDN 1768.
Despite their rather dull appearance, dark nebulae like LDN 1768 are of huge interest to astronomers, as it is here that new stars form. Inside these vast stellar nurseries there are protostars — stars at the earliest stage of their lives, still coalescing out of the gas and dust in the cloud.
Protostars are relatively cold and have not yet begun to produce enough energy to emit visible light. Instead, they emit radiation at submillimetre wavelengths, which human eyes cannot see. Luckily, unlike visible light, light at submillimetre wavelengths is not absorbed by the surrounding dust. By using special telescopes that are sensitive to submillimetre radiation, like the Atacama Large Millimeter/submillimeter Array (ALMA) observatory, we can see through the dust and find out more about the protostars within the cloud.
Eventually, the protostars will become dense and hot enough to start the nuclear reactions that will produce visible light and they will start to shine. When this happens, they will blow away the cocoon of dust surrounding them and cause any remaining gas to emit light as well, creating the spectacular light show known as an HII region.Författare/Upphovsman: ESO/S. Brunier, Licens: CC BY 4.0
The Coalsack is one of the most prominent dark nebulae visible to the unaided eye. A beautiful sight in the southern sky, the Coalsack casts a dark silhouette against the Milky Way’s bright stripe of stars. The Coalsack is located approximately 600 light-years away from Earth in the southern part of the constellation of Crux (the Southern Cross).
This seemingly starless dark patch is actually an opaque interstellar dust cloud that obscures the light of the background Milky Way stars. Dust grains in the cloud redden the starlight that reaches us by absorbing blue light preferentially, so that the red stars shimmering in the northern and darkest part of the Coalsack appear more crimson than they would in the absence of this dust.
The first European to see this remarkable object was probably the Spanish navigator and explorer Vincente Yanez Pinzon when he sailed to the South American coast in 1499. The Coalsack earned the nickname "Black Magellanic Cloud” in the 16th century, apparently rivalling the prominence of the Large and Small Magellanic Clouds, the two dwarf irregular galaxies that shine brightly in the skies of the Southern Hemisphere. The Incas tell that the god Ataguchu, in a fit of temper, kicked the Milky Way and a fragment flew off, forming the Small Magellanic Cloud where it landed on the sky, and leaving the black mark of the Coalsack behind. Beware of Inca gods in a bad mood!
Another famous sight seen from southern latitudes — though it can creep into view in tropical northern latitudes — is the Southern Cross, or Crux. This cross-shaped constellation has assumed great significance in the cultures of the Southern Hemisphere, even as far back as prehistoric times. So distinctive and evocative is the Southern Cross that the national flags of Australia, Brazil, New Zealand, Papua New Guinea, and Samoa all include a representation of it. The European Southern Observatory (ESO) has also acknowledged the significance of Crux as the foremost constellation of the southern skies, and has proudly incorporated the cross-shaped symbol into the ESO logo. Its Mapudungun name (that is, in the language of the native Chilean Mapuche population), Melipal, was given to the third Unit Telescope of the VLT on Paranal.Författare/Upphovsman: ESO, Licens: CC BY 4.0
The Wide Field Imager (WFI) on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile snapped this image of the dark nebula LDN 483. The object is a region of space clogged with gas and dust. These materials are dense enough to effectively eclipse the light of background stars. LDN 483 is located about 700 light-years away in the constellation of Serpens (The Serpent).