scholarly journals Proper-motion Membership Tests for Four Planetary Nebulae in Galactic Globular Clusters

2020 ◽  
Vol 159 (6) ◽  
pp. 276
Author(s):  
Howard E. Bond ◽  
Andrea Bellini ◽  
Kailash C. Sahu
Keyword(s):  
Proper Motion ◽  
Globular Clusters ◽  
Planetary Nebulae ◽  
Galactic Globular Clusters

scholarly journals Kinematics of Galactic Globular Clusters from Schmidt-Plate Astrometry

1995 ◽  
Vol 164 ◽  
pp. 405-405 ◽  
Author(s):  
R.-D. Scholz ◽  
S. Hirte ◽  
M.J. Irwin ◽  
M. Odenkirchen
Keyword(s):  
Radial Velocity ◽  
Proper Motion ◽  
Globular Clusters ◽  
Proper Motions ◽  
Large Numbers ◽  
Solar Motion ◽  
The Galaxy ◽  
Ursa Minor ◽  
Galactic Globular Clusters

From measurements of Tautenburg Schmidt plates with the APM facility in Cambridge we obtained absolute proper motions of the Galactic globular clusters M 3 and M 92 directly with respect to large numbers of background galaxies (Scholz et al. 1993, 1994). We have extended our work to the dSphs in Draco and Ursa Minor (Scholz & Irwin 1994) and to other Galactic globular clusters using Tautenburg, Palomar and UK Schmidt plates. Combining our absolute proper motion of a cluster with its known radial velocity and distance (using common parameters of the solar motion) we derive the cluster orbit in the Galaxy (cf. Odenkirchen & Brosche 1992).

scholarly journals Absolute Proper Motion of Galactic Globular Clusters

1993 ◽  
Vol 156 ◽  
pp. 249-254
Author(s):  
R.-D. Scholz ◽  
M. J. Irwin
Keyword(s):  
Reference Frame ◽  
Proper Motion ◽  
Globular Clusters ◽  
Stepwise Regression ◽  
Regression Method ◽  
Systematic Effects ◽  
The Mean ◽  
Galactic Globular Clusters

Using automated scans of Tautenburg Schmidt plates with the APM facility in Cambridge (UK) the mean tangential motion of two globular clusters, M3 and M92, is determined directly with respect to a well defined extragalactic reference frame. In both fields five pairs of plates centred on the cluster with epoch differences from 20 to 27 years were measured. In the independent proper motion determination with 1200 to 2300 reference galaxies for each pair of plates we used 3rd order polynomials and a stepwise regression method. The mean absolute cluster p.m. corrected for systematic effects dependent on the coordinates was obtained with an accuracy of ±0.03 arcsec/century for M3 and ±0.06 arcsec/century for M92.

scholarly journals New Candidate Planetary Nebulae in Galactic Globular Clusters from the VVV Survey

2019 ◽  
Vol 884 (1) ◽  
pp. L15 ◽  
Author(s):  
Dante Minniti ◽  
Bruno Dias ◽  
Matías Gómez ◽  
Tali Palma ◽  
Joyce B. Pullen
Keyword(s):  
Globular Clusters ◽  
Planetary Nebulae ◽  
Galactic Globular Clusters

scholarly journals Astrometry and Galactic Structure

1994 ◽  
Vol 161 ◽  
pp. 425-434
Author(s):  
S.R. Majewski
Keyword(s):  
Proper Motion ◽  
Globular Clusters ◽  
Milky Way ◽  
Galactic Structure ◽  
Proper Motions ◽  
Future Prospects ◽  
The Status ◽  
Galactic Globular Clusters ◽  
Remarkable Agreement

The application of astrometric surveys to understanding the structure and kinematics of the Milky Way is discussed, with particular emphasis on some of the issues expected to be addressed in the next decade or so. It is shown that the results of complete proper motion surveys of field stars at the Galactic poles are in remarkable agreement concerning the global kinematics of stars as a function of distance, but that significant differences exist in how these data are decomposed to derive the kinematics of individual Galactic components. The status and future prospects regarding the measurement of proper motions and orbits for Galactic globular clusters and satellites are also discussed.

scholarly journals The Planetary Nebulae in NGC 6441 and Pal 6

1997 ◽  
Vol 180 ◽  
pp. 243-243 ◽  
Author(s):  
G. H. Jacoby ◽  
J. Morse ◽  
L. Fullton
Keyword(s):  
Globular Clusters ◽  
Imaging Technique ◽  
Planetary Nebulae ◽  
Central Star ◽  
Galactic Globular Clusters

Jacoby & Fullton (1994, BAAS, 26, 1384) searched 133 of the ∼ 150 Galactic globular clusters for Planetary Nebulae (PNe) using the on-band/off-band imaging technique at [O III] λ5007Å. We present preliminary abundances and central star properties for the 2 new PN identified in that survey (labeled JaFu 1 and JaFu 2 by Acker, Marcout, & Ochsenbein 1996).

Carbon Abundances in Planetary Nebulae in the Galactic Bulge

1984 ◽  
Vol 5 (4) ◽  
pp. 535-537
Author(s):  
B. Louise Webster
Keyword(s):  
Globular Clusters ◽  
Planetary Nebulae ◽  
Open Clusters ◽  
Red Giants ◽  
Galactic Bulge ◽  
Long Period ◽  
Long Period Variables ◽  
Galactic Globular Clusters ◽  
The Masses ◽  
K Giants

The galactic nuclear bulge is a well defined population, but it is one that is relatively difficult to study in detail because its members never stray into the solar vicinity and they are both distant and obscured. Mould (1982) has summarized much of our knowledge of the masses and composition of stars in the bulge. The red giants resemble those in metal-rich old open clusters and the late M giants are either younger than galactic globular clusters or super-metal-rich or both. Whitford and Rich (1983) have demonstrated the existence of K-giants that are super-metal-rich in iron and Wood and Bessell (1983) have interpreted the properties of a sample of long period variables in the bulge as those of a young, super-metal-rich population.

scholarly journals Absolute Proper Motions and Space Velocities of Globular Clusters

1988 ◽  
Vol 126 ◽  
pp. 525-526
Author(s):  
H. -J. Tucholke ◽  
P. Brosche ◽  
M. Geffert
Keyword(s):  
Proper Motion ◽  
Globular Clusters ◽  
Proper Motions ◽  
Angular Momenta ◽  
Galactic Globular Clusters

Proper motions of globular clusters referred to extragalactic background objects provide absolute proper motions leading to space velocities. Some results from the Bonn Observatory proper motion program for galactic globular clusters are shown. Reference stars from the Lick program linked to galaxies are used. Low orbital angular momenta for NGC 4147, NGC 5466 and NGC 6218 were detected. In a further program, proper motions of 47 Tuc and NGC 362 are currently being measured relative to the background of the SMC.

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