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Palomar 5

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Coordinates:

15^h 16^m 05.3^s, −00° 06′ 41″

From Wikipedia, the free encyclopedia

Globular cluster in the constellation Serpens

Palomar 5

Observation data (J2000 epoch)
Class	XII
Constellation	Serpens
Right ascension	15^h 16^m 05.3^s^[1]
Declination	–00° 06′ 41″^[1]
Distance	76 kly (23 kpc)^[2]
Apparent magnitude (V)	+11.75
Apparent dimensions (V)	6.9′
Physical characteristics
Mass	3.00×10⁴^[3] `M`_☉
Radius	76 ly^[4]
Estimated age	11.5±1.0 Gyr^[5]
Notable features	Erroneously thought to be a dwarf galaxy
Other designations	UGC 9792, GCl 32^[1]
See also:Globular cluster,List of globular clusters

Palomar 5 is aglobular cluster in the constellationSerpens and a member of thePalomar Globular Clusters group. It was discovered byWalter Baade in 1950, and independently found again byAlbert George Wilson in 1955. After the initial name of Serpens, it was subsequently catalogued as Palomar 5.

There is a process of disruption acting on this cluster because of the gravitation of theMilky Way – in fact there are many stars leaving this cluster in the form of astellar stream. The stream has a mass of 5000 solar masses and is 30,000 light years long.^[6] The cluster is currently 60.6 kly (18.6 kpc) from theGalactic Center. It shows a noticeable amount of flattening, with an aspect ratio of0.62 ± 0.23 between its semimajor axis and semiminor axis.^[7]

References

[edit]

^^a ^b ^c"SIMBAD Astronomical Database".Results for Palomar 5. Retrieved2006-11-17.
^Hessels, J. W. T.; et al. (November 2007), "A 1.4 GHz Arecibo Survey for Pulsars in Globular Clusters",The Astrophysical Journal,670 (1):363–378,arXiv:0707.1602,Bibcode:2007ApJ...670..363H,doi:10.1086/521780,S2CID 16914232.
^Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters",The Astrophysical Journal,742 (1): 51,arXiv:1108.4402,Bibcode:2011ApJ...742...51B,doi:10.1088/0004-637X/742/1/51,S2CID 118649860.
^distance × sin( diameter_angle / 2 ) = 76 ly. radius
^Martell, S. L.; Smith, G. H.; Grillmair, C. J. (2002). "A New Age Measurement for Palomar 5".American Astronomical Society, 201st AAS Meeting, #07.11; Bulletin of the American Astronomical Society.34: 1103.Bibcode:2002AAS...201.0711M.
^Ibata, Rodrigo; Gibson, Brad (April 2007). "The Ghosts of Galaxies Past".Scientific American.296 (4):40–45.Bibcode:2007SciAm.296d..40I.doi:10.1038/scientificamerican0407-40.ISSN 0036-8733.PMID 17479629.
^Chen, C. W.; Chen, W. P. (October 2010), "Morphological Distortion of Galactic Globular Clusters",The Astrophysical Journal,721 (2):1790–1819,Bibcode:2010ApJ...721.1790C,doi:10.1088/0004-637X/721/2/1790

External links

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SEDS Palomar 5
Palomar 5 onWikiSky:DSS2,SDSS,GALEX,IRAS,Hydrogen α,X-Ray,Astrophoto,Sky Map,Articles and images
Gieles, Mark; Erkal, Denis; Antonini, Fabio; Balbinot, Eduardo; Peñarrubia, Jorge (2021),N-body simulation of the Galactic globular cluster Palomar 5 and its stream,arXiv:2102.11348,doi:10.1038/s41550-021-01392-2,S2CID 256703405,archived from the original on 2021-12-18, retrieved2021-07-08

Constellation of Serpens

Stars

Bayer	α (Unukalhai) β (Zhou) γ δ ε ζ η θ (Alya) ι κ (Gudja) λ μ ν ξ ο π ρ σ τ¹ τ² τ³ τ⁴ τ⁵ τ⁶ τ⁷ τ⁸ υ φ χ ψ ω
Flamsteed	3 4 5 6 7 8 10 11 (A¹) 14 16 25 (A²) 29 36 (b) 39 40 43 45 46 47 59 (d) 60 (c) 61 64
Variable	R W AO CT CV FH NN
HR	5692 6681 6993 (e)
HD	136118 142245 143436 168443 168746 (Alasia) 175541 (Kaveh)
Other	CoRoT-9 CoRoT-11 CoRoT-22 CoRoT-23 CoRoT-27 Gliese 710 MWC 922 PSR J1719−1438 Ross 508 W40 IRS 1A South

Exoplanets	CoRoT-9b CoRoT-11b CoRoT-22b CoRoT-23b CoRoT-27b HD 175541 b (Kavian)

Star
clusters

NGC	NGC 6535 NGC 6539 NGC 6604 NGC 6605
Other	IC 4756 Messier 5 Messier 16 Palomar 5 Serpens South

Nebulae

Other	Eagle Nebula L183 Red Square Nebula Sh 2-33 Sh 2-36 Sh 2-46 Sh 2-47 Sh 2-54 Sh 2-68 Westerhout 40

Galaxies

NGC	5910 5920 5921 5928 5936 5940 5953 5957 5962 5964 5970 5980 5988 5996 6008 6027 6027a 6027b 6027c 6027d 6027e 6051 6118
Other	3C 318 3C 321 3C 323.1 3C 324 3C 326 4C 10.45 4C 11.50 Arp 220 CGCG 049-033 Hoag's Object IC 4537 IC 4588 NRAO 530 PDS 456 PGC 54493 PKS 1538+149

Galaxy clusters	Seyfert's Sextet

Category

Milky Way

Location

Milky Way →Milky Way subgroup →Local Group→Local Sheet→Local Volume→Virgo Supercluster→Laniakea Supercluster →Pisces–Cetus Supercluster Complex →Local Hole →Observable universe →Universe
Each arrow (→) may be read as "within" or "part of".

Structure

Galactic Center	Sagittarius A Sagittarius A* Fermi bubbles Supermassive black hole Galactic Center filaments Galactic Center GeV excess Galactic Center Radio Arc
Disk	Carina–Sagittarius Norma–Cygnus Orion–Cygnus Perseus Scutum–Centaurus Near 3 kpc Arm Far 3 kpc Arm
Halo	Aquarius Stream Fimbulthul stream Gaia Sausage Helmi stream Magellanic Stream Monoceros Ring Palomar 5 stream Pisces–Eridanus stream Sagittarius Stream Virgo Stream

Satellite
galaxies

Magellanic Clouds	Large Magellanic Cloud Small Magellanic Cloud Magellanic Bridge
Dwarfs	Antlia II Boötes I Boötes II Boötes III Canes Venatici I Canes Venatici II Canis Major Carina Coma Berenices Crater 2 Draco Eridanus II Fornax Hercules Leo I Leo II Leo IV Leo V Leo T Phoenix Pisces Overdensity Pisces II Reticulum II Sagittarius Spheroidal Segue 1 Segue 2 Sculptor Sextans Triangulum II Ursa Major I Ursa Major II Ursa Major III Ursa Minor Virgo I Willman 1

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