Palomar 1


Palomar 1

Globular cluster
name = Palomar 1


caption = Palomar 1 by Hubble Space Telescope; 3.3′ view
credit = NASA/STScI/WikiSky
epoch = J2000
class = XII
constellation = Cepheus
ra = RA|03|33|19.3cite web
title=SIMBAD Astronomical Database
work=Results for Palomar 1
url=http://simbad.u-strasbg.fr/Simbad
accessdate=2006-11-17
]
dec = DEC|+79|34|55
dist_ly = 37 ± 4 kly
dist_pc = 11.2 ± 1.3 kpccite journal
author = Rosenberg, A.; Saviane, I.; Piotto, G.; Aparicio, A.; Zaggia, S. R.
title=Palomar 1 - Another young Galactic halo globular cluster
journal=Astronomical Journal
year=1998
volume=115
pages=648
url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1998AJ....115..648R
doi=10.1086/300200
]
appmag_v = +13.18
size_v = 2′.8
radius_ly = 15 ly [distance × sin( diameter_angle / 2 ) = 15 ly. radius]
mass_kg = -
mass_msol = -
v_hb = -
age = 6.3 to 8 Gyr
notes = -
names = LEDA 13165

Palomar 1 is a globular cluster in the constellation Cepheus in thehalo of the Milky Way galaxy. First discovered discovered by George Ogden Abell in 1954 on the Palomar Survey Sky plates,cite journal
last=Abell
first = George O.
title=Globular Clusters and Planetary Nebulae Discovered on the National Geographic Society-Palomar Observatory Sky Survey
journal=Publications of the Astronomical Society of the Pacific
year=1955
volume=67
issue=397
pages=258
url=http://adsabs.harvard.edu/cgi-bin/bib_query?1955PASP...67..258A
doi=10.1086/126815
] it was cataloged as a globular cluster. At 6.3 to 8 Gyr, it is a very young cluster compared when with the other globular clusters in the Milky Way.It is a relatively metal-rich globular with [Fe/H] = -0.60.cite journal
author = van den Bergh, Sidney; Mackey, A. D.
title=Globular clusters and the formation of the outer Galactic halo
journal=Monthly Notices of the Royal Astronomical Society
year=2004
volume=354
issue=3
pages=713–719
url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2004MNRAS.354..713V
doi=10.1111/j.1365-2966.2004.08228.x
] It is likely that Palomar 1 has a similar evolutionary history to the Sagittarius dwarf companion globular Terzan 7, that is, it may have once been associatedwith a dwarf spheroidal galaxy that was later destroyed by tidal forces.

References

External links

* [http://www.seds.org/~spider/spider/MWGC/pal01.html SEDS: Palomar 1]
*


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