1998A&A...339...61R

Query : 1998A&A...339...61R

1998A&A...339...61R - Astronomy and Astrophysics, volume 33961-69 (1998/11-1)

Young Galactic globular clusters II. The case of Palomar 12.

ROSENBERG A., SAVIANE I., PIOTTO G. and HELD E.V.

Abstract (from CDS):

We present broadband V,I CCD photometry for ∼1700 stars towards the Galactic globular cluster Palomar 12, covering a field of 10.7'x10.7'. From these data, a color-magnitude diagram from the red giant branch tip to ∼2mag below the cluster's turn-off is obtained. From a comparison with the color magnitude diagrams of 47 Tuc and M5, and using different theoretical models, we confirm that Pal 12 is younger, finding an age 68±10% that of both template clusters. Revised structural parameters are also obtained: rc=37.8±0.6 and c=1.08±0.02.

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Journal keyword(s): Hertzsprung-Russell (HR) diagram - stars: Population II - globular clusters: individual: Palomar 12

Nomenclature: Table 1: Cl* Palomar 12 RSP VN (Nos V1-V7), Cl* Palomar 12 RSP IN (Nos I1-I6).

Simbad objects: 21

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Number of rows : 21
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 Cl Pal 1 GlC 03 33 20.04 +79 34 51.8   17.2       ~ 267 1
3 Cl Ruprecht 106 GlC 12 38 40.20 -51 09 01.0           ~ 413 0
4 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
5 NGC 6362 GlC 17 31 54.99 -67 02 54.0           ~ 637 0
6 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 460 0
7 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 384 0
8 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 548 0
9 Cl* Palomar 12 RSP I1 * ~ ~           ~ 1 0
10 Cl* Palomar 12 RSP I2 * ~ ~           ~ 1 0
11 Cl* Palomar 12 RSP I3 * ~ ~           ~ 1 0
12 Cl* Palomar 12 RSP I4 * ~ ~           ~ 1 0
13 Cl* Palomar 12 RSP I5 * ~ ~           ~ 1 0
14 Cl* Palomar 12 RSP I6 * ~ ~           ~ 1 0
15 Cl* Palomar 12 RSP V7 * ~ ~           ~ 1 0
16 Cl* Palomar 12 RSP V6 * ~ ~           ~ 1 0
17 Cl* Palomar 12 RSP V5 * ~ ~           ~ 1 0
18 Cl* Palomar 12 RSP V4 * ~ ~           ~ 1 0
19 Cl* Palomar 12 RSP V3 * ~ ~           ~ 1 0
20 Cl* Palomar 12 RSP V2 * ~ ~           ~ 1 0
21 Cl* Palomar 12 RSP V1 * ~ ~           ~ 1 0

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