NGC 5170
NGC 5170 | |
---|---|
NGC 5170 imaged by the Hubble Space Telescope | |
Observation data (J2000 epoch) | |
Constellation | Virgo |
Right ascension | 13h 29m 48.769s[1] |
Declination | −17° 57′ 59.39″[1] |
Redshift | 0.005006[2] |
Heliocentric radial velocity | 1,502 km/s[3] |
Galactocentric velocity | 1,386 km/s[3] |
Distance | 83.5 Mly (25.59 Mpc)[3] |
Apparent magnitude (V) | 12.4[2] |
Apparent magnitude (B) | 12.07[3] |
Absolute magnitude (V) | −21.6[4] |
Characteristics | |
Type | SA(s)c: sp[2] |
Apparent size (V) | 9′.9 × 1′.2[2] |
Other designations | |
IRAS 13271-1742, NGC 5170, LEDA 47394, MCG -03-34-084, PGC 47394[3][5] |
NGC 5170 is a large, nearby,[6] edge-on spiral galaxy in the equatorial constellation of Virgo. It was discovered on February 7, 1785 by William Herschel. This galaxy is located at a distance of 83.5 million light years and is receding at a heliocentric radial velocity of 1,502 km/s.[3] It is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.[7]
The inclination of the galactic plane of NGC 5170 is tilted at an angle of ~86° to the line of sight from the Earth, which means the disk is significantly obscured. It is estimated to have a morphological class of type Sb to Sc, meaning the spiral arms are moderate to loosely wound. The bulge-to-disk ratio of 0.5 is more consistent with an Sb galaxy.[4] It has an estimated star formation rate of 1.37±0.23 M☉·yr−1, which is more than double the rate in the Milky Way.[4]
The galactic latitude of this star is 43°, making the field relatively free of stars in the Milky Way. Combined with the proximity and edge-on view of NGC 5170, this makes galaxy useful for studies of its globular cluster population. It is estimated to have a total of 600±100 globulars, which is much higher than for the Milky Way. A candidate ultra-compact dwarf galaxy has been identified that is associated with NGC 5170.[4]
Numerical modeling of this galaxy indicates it has a massive dark halo with a thin, low surface brightness disk.[6] The halo mass of NGC 5170 is 3.4×1012 M☉.[4] Examination of the galaxy with the Chandra X-ray Observatory showed there is no diffuse X-ray emission from hot gas in the extended galactic halo.[8]
References
- ^ a b Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d "NASA/IPAC Extragalactic Database". Results for NGC 5170. Retrieved 2007-04-03.
- ^ a b c d e f Tully, R. Brent; et al. (2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 21. arXiv:1605.01765. Bibcode:2016AJ....152...50T. doi:10.3847/0004-6256/152/2/50. S2CID 250737862. 50.
- ^ a b c d e Forbes, Duncan A.; et al. (March 2010). "A blue tilt in the globular cluster system of the Milky Way-like galaxy NGC 5170". Monthly Notices of the Royal Astronomical Society. 403 (1): 429–438. arXiv:0911.4743. Bibcode:2010MNRAS.403..429F. doi:10.1111/j.1365-2966.2009.16130.x. S2CID 59570601.
- ^ "NGC 5170". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-12-26.
- ^ a b Khoperskov, A.; et al. (July 2010). "Numerical modelling of the vertical structure and dark halo parameters in disc galaxies". Astronomische Nachrichten. 331 (7): 731. arXiv:1007.4693. Bibcode:2010AN....331..731K. doi:10.1002/asna.200911402. S2CID 55488734.
- ^ "The Virgo III Groups". Atlas of the Universe. Retrieved 2010-11-27.
- ^ Pedersen, Kristian; et al. (May 2006). "Discovery of a very extended X-ray halo around a quiescent spiral galaxy The "missing link" of galaxy formation". New Astronomy. 11 (7): 465–470. arXiv:astro-ph/0511682. Bibcode:2006NewA...11..465P. doi:10.1016/j.newast.2005.11.004. S2CID 53473787.
External links
- Media related to NGC 5170 at Wikimedia Commons
- NGC 5170 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- v
- t
- e
- 5000
- 5001
- 5002
- 5003
- 5004
- 5005
- 5006
- 5007
- 5008
- 5009
- 5010
- 5011
- 5012
- 5013
- 5014
- 5015
- 5016
- 5017
- 5018
- 5019
- 5020
- 5021
- 5022
- 5023
- 5024
- 5025
- 5026
- 5027
- 5028
- 5029
- 5030
- 5031
- 5032
- 5033
- 5034
- 5035
- 5036
- 5037
- 5038
- 5039
- 5040
- 5041
- 5042
- 5043
- 5044
- 5045
- 5046
- 5047
- 5048
- 5049
- 5050
- 5051
- 5052
- 5053
- 5054
- 5055
- 5056
- 5057
- 5058
- 5059
- 5060
- 5061
- 5062
- 5063
- 5064
- 5065
- 5066
- 5067
- 5068
- 5069
- 5070
- 5071
- 5072
- 5073
- 5074
- 5075
- 5076
- 5077
- 5078
- 5079
- 5080
- 5081
- 5082
- 5083
- 5084
- 5085
- 5086
- 5087
- 5088
- 5089
- 5090
- 5091
- 5092
- 5093
- 5094
- 5095
- 5096
- 5097
- 5098
- 5099
- 5100
- 5101
- 5102
- 5103
- 5104
- 5105
- 5106
- 5107
- 5108
- 5109
- 5110
- 5111
- 5112
- 5113
- 5114
- 5115
- 5116
- 5117
- 5118
- 5119
- 5120
- 5121
- 5122
- 5123
- 5124
- 5125
- 5126
- 5127
- 5128
- 5129
- 5130
- 5131
- 5132
- 5133
- 5134
- 5135
- 5136
- 5137
- 5138
- 5139
- 5140
- 5141
- 5142
- 5143
- 5144
- 5145
- 5146
- 5147
- 5148
- 5149
- 5150
- 5151
- 5152
- 5153
- 5154
- 5155
- 5156
- 5157
- 5158
- 5159
- 5160
- 5161
- 5162
- 5163
- 5164
- 5165
- 5166
- 5167
- 5168
- 5169
- 5170
- 5171
- 5172
- 5173
- 5174
- 5175
- 5176
- 5177
- 5178
- 5179
- 5180
- 5181
- 5182
- 5183
- 5184
- 5185
- 5186
- 5187
- 5188
- 5189
- 5190
- 5191
- 5192
- 5193
- 5194
- 5195
- 5196
- 5197
- 5198
- 5199
- 5200
- 5201
- 5202
- 5203
- 5204
- 5205
- 5206
- 5207
- 5208
- 5209
- 5210
- 5211
- 5212
- 5213
- 5214
- 5215
- 5216
- 5217
- 5218
- 5219
- 5220
- 5221
- 5222
- 5223
- 5224
- 5225
- 5226
- 5227
- 5228
- 5229
- 5230
- 5231
- 5232
- 5233
- 5234
- 5235
- 5236
- 5237
- 5238
- 5239
- 5240
- 5241
- 5242
- 5243
- 5244
- 5245
- 5246
- 5247
- 5248
- 5249
- 5250
- 5251
- 5252
- 5253
- 5254
- 5255
- 5256
- 5257
- 5258
- 5259
- 5260
- 5261
- 5262
- 5263
- 5264
- 5265
- 5266
- 5267
- 5268
- 5269
- 5270
- 5271
- 5272
- 5273
- 5274
- 5275
- 5276
- 5277
- 5278
- 5279
- 5280
- 5281
- 5282
- 5283
- 5284
- 5285
- 5286
- 5287
- 5288
- 5289
- 5290
- 5291
- 5292
- 5293
- 5294
- 5295
- 5296
- 5297
- 5298
- 5299
- 5300
- 5301
- 5302
- 5303
- 5304
- 5305
- 5306
- 5307
- 5308
- 5309
- 5310
- 5311
- 5312
- 5313
- 5314
- 5315
- 5316
- 5317
- 5318
- 5319
- 5320
- 5321
- 5322
- 5323
- 5324
- 5325
- 5326
- 5327
- 5328
- 5329
- 5330
- 5331
- 5332
- 5333
- 5334
- 5335
- 5336
- 5337
- 5338
- 5339
- 5340
- 5341
- 5342
- 5343
- 5344
- 5345
- 5346
- 5347
- 5348
- 5349
- 5350
- 5351
- 5352
- 5353
- 5354
- 5355
- 5356
- 5357
- 5358
- 5359
- 5360
- 5361
- 5362
- 5363
- 5364
- 5365
- 5366
- 5367
- 5368
- 5369
- 5370
- 5371
- 5372
- 5373
- 5374
- 5375
- 5376
- 5377
- 5378
- 5379
- 5380
- 5381
- 5382
- 5383
- 5384
- 5385
- 5386
- 5387
- 5388
- 5389
- 5390
- 5391
- 5392
- 5393
- 5394
- 5395
- 5396
- 5397
- 5398
- 5399
- 5400
- 5401
- 5402
- 5403
- 5404
- 5405
- 5406
- 5407
- 5408
- 5409
- 5410
- 5411
- 5412
- 5413
- 5414
- 5415
- 5416
- 5417
- 5418
- 5419
- 5420
- 5421
- 5422
- 5423
- 5424
- 5425
- 5426
- 5427
- 5428
- 5429
- 5430
- 5431
- 5432
- 5433
- 5434
- 5435
- 5436
- 5437
- 5438
- 5439
- 5440
- 5441
- 5442
- 5443
- 5444
- 5445
- 5446
- 5447
- 5448
- 5449
- 5450
- 5451
- 5452
- 5453
- 5454
- 5455
- 5456
- 5457
- 5458
- 5459
- 5460
- 5461
- 5462
- 5463
- 5464
- 5465
- 5466
- 5467
- 5468
- 5469
- 5470
- 5471
- 5472
- 5473
- 5474
- 5475
- 5476
- 5477
- 5478
- 5479
- 5480
- 5481
- 5482
- 5483
- 5484
- 5485
- 5486
- 5487
- 5488
- 5489
- 5490
- 5491
- 5492
- 5493
- 5494
- 5495
- 5496
- 5497
- 5498
- 5499