Maggie (astronomy)

Molecular cloud in the Milky Way galaxy

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MaggieNebula

Image of Maggie as seen by the Gaia satellite.

Observation data
Distance| 55,000 ly
Physical characteristics
Radius| 3,900 ly
See also: Lists of nebulae

Maggie is a vast cloud of hydrogen gas observed within our own Milky Way galaxy. It is a filament of hydrogen 3,900 light-years long and 130 light-years wide. It is a single coherent structure with all parts showing similar velocity with respect to the local standard of rest. It is one of the biggest structures within the Milky Way. "Maggie" is located about 55,000 light-years away (on the other side of the Milky Way). Maggie contains eight percent molecular hydrogen by mass fraction; the rest being atomic hydrogen.[1][2] It is hoped the cloud will provide clues to one of the earliest stages of star formation.[3]

It was first named by Colombian astronomer Juan D. Soler, an astrophysicist affiliated with the Istituto Nazionale di Astrofisica in Rome, Italy. He named it after the longest river in his native country, the Río Magdalena (Anglicized: Margaret, or "Maggie"). Astronomers discovered the cloud as part of The HI/OH/Recombination line survey of the Milky Way (THOR). It was first described in December 2021 in the journal Astronomy & Astrophysics.[4]

## References

[edit]

1. ^ Nielbock, Markus; MPIA (2021-12-20). "A gigantic lane made of raw material for new stars". mpia.de/en. Retrieved 2022-01-19.
2. ^ Williams, Matt; Today, Universe. "Astronomers find the biggest structure in the Milky Way: A filament of hydrogen 3,900 light-years long". phys.org. Retrieved 2022-01-08.
3. ^ Research Highlight, Nature (2022-01-04). "A cloud named Maggie: space streamer could birth new stars". Nature. 601 (7892): 168. Bibcode:2022Natur.601Q.168.. doi:10.1038/d41586-021-03848-x. S2CID 245703644.
4. ^ Syed, J.; Soler, J. D.; Beuther, H.; Wang, Y.; Suri, S.; Henshaw, J. D.; Riener, M.; Bialy, S.; Kh, S. Rezaei; Stil, J. M.; Goldsmith, P. F. (2022-01-01). "The "Maggie" filament: Physical properties of a giant atomic cloud". Astronomy & Astrophysics. 657: A1. arXiv:2111.01057. Bibcode:2022A&A...657A...1S. doi:10.1051/0004-6361/202141265. ISSN 0004-6361. S2CID 240354000.

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Constellation of Aquila

* Aquila in Chinese astronomy
* List of stars in Aquila

Stars|

| Bayer|

* α (Altair)
* β (Alshain)
* γ (Tarazed)
* δ
* ε
* ζ (Okab)
* η
* θ (Antinous)
* ι
* κ
* λ
* μ
* ν
* ξ (Libertas)
* ο
* π
* σ
* τ (Tianfu)
* υ
* φ
* χ
* ψ
* ω1
* ω2

|

Flamsteed|

* 4
* 5
* 7
* 8
* 10
* 11
* 12 (i)
* 14 (g)
* 15 (h)
* 18
* 19
* 20
* 21
* 22
* 23
* 24
* 26 (f)
* 27 (d)
* 28 (A)
* 31 (b)
* 35 (c)
* 36 (e)
* 37 (k)
* 42
* 45
* 46
* 51
* 56
* 57
* 58
* 62
* 64
* 66
* 68
* 69
* 70
* 71 (l)
* 14 Sge (y Sge)
* 62 Ser
* 64 Sgr

Variable|

* R
* U
* V
* W
* TT
* FF
* QS
* V368
* V450
* V500
* V603
* V604
* V605
* V606
* V923
* V1286
* V1291
* V1298
* V1302
* V1315
* V1333
* V1339
* V1427
* V1428
* V1429
* V1472
* V1487
* V1494
* V1654
* V1672
* V1691
* V1703 (Phoenicia)
* V1828
* V1936

HR|

* 7099
* 7143
* 7288
* 7300
* 7307
* 7396
* 7456
* 7569
* 7598
* 7599
* 7693
* 7717
* 7803

HD|

* 179079
* 183263
* 187734
* 192699 (Chechia)

Other|

* CoRoT-2
* CoRoT-3
* CoRoT-8
* Gaia BH3
* HAT-P-41
* PSR J1856+0245
* PSR J1903+0327
* PSR B1913+16 (Hulse–Taylor)
* PSR J1951+1123
* SGR 1900+14
* SS 433
* W43A
* W49-2
* WASP-80 (Petra)
* WD J1953−1019
* ZTF J1901+1458

| Exoplanets|

* CoRoT-2b
* CoRoT-3b
* CoRoT-8b
* CoRoT-10b
* HD 179079 b
* HD 183263 b
* c
* HD 192263 b
* HD 192699 b
* ξ Aquilae b

|

| Star clusters|

* NGC 6709
* NGC 6738
* NGC 6755
* NGC 6756
* NGC 6760
* NGC 6863

|

Nebulae|

| NGC|

* 6741
* 6751
* 6778
* 6781
* 6790

|

Other|

* Abell 48
* Abell 70
* E Nebula
* Hen 2-428
* HESS J1857+026
* Kesteven 75
* Smith's Cloud
* W43
* W49
* W49B
* W50

Galaxies|

| NGC|

* 6814

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Other|

* IC 1327

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