Palomar 1 is a
globular cluster part of the
Palomar group in the
constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
The origins of the e ...
Cepheus in the
halo possibly in the
Outer Arm of the
Milky Way galaxy. First discovered by
George O. Abell
George Ogden Abell (March 1, 1927 – October 7, 1983) was an American educator. Teaching at University of California, Los Angeles, UCLA, priorly he worked as a research astronomer, administrator, as a popularizer of science and of education, and ...
in 1954 on the Palomar Survey Sky plates,
it was catalogued as a globular cluster. At 6.3 to 8 Gyr, it is a very young cluster when compared to the other globular clusters in the Milky Way.
It is a relatively
metal-rich globular with
e/H= -0.60.
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 associated
with a
dwarf spheroidal galaxy that was later destroyed by tidal forces.
References
External links
*
SEDS: Palomar 1*
Cepheus (constellation)
Globular clusters
Astronomical objects discovered in 1954
•
{{star-cluster-stub