scholarly journals Hubble Space Telescope imaging of globular cluster candidates in low surface brightness dwarf galaxies

2005 ◽  
Vol 442 (1) ◽  
pp. 85-95 ◽  
Author(s):  
M. E. Sharina ◽  
T. H. Puzia ◽  
D. I. Makarov
Keyword(s):  
Globular Cluster ◽  
Surface Brightness ◽  
Dwarf Galaxies ◽  
Hubble Space Telescope ◽  
Space Telescope ◽  
Low Surface Brightness

scholarly journals A Search for Globular Clusters in the Surroundings of Dwarf Galaxies in Fornax: Intracluster Globulars?

2002 ◽  
Vol 207 ◽  
pp. 345-347
Author(s):  
Lilia P. Bassino ◽  
Sergio A. Cellone ◽  
Juan C. Forte
Keyword(s):  
Density Distribution ◽  
Globular Cluster ◽  
Surface Density ◽  
Globular Clusters ◽  
Surface Brightness ◽  
Dwarf Galaxies ◽  
Color Distribution ◽  
Low Surface Brightness ◽  
Fornax Cluster

We present the results of a search for globular clusters in the surroundings of 15 low surface brightness dwarf galaxies in the Fornax cluster, on CCD images in the C and T1 bands. Globular cluster candidates show a clear bimodal color distribution. Their surface density distribution shows no concentration towards the respective dwarf galaxies but it does show concentration towards the center of the Fornax cluster. We suggest that the potential globular clusters might not be bound to the dwarf galaxies, but might instead belong to the intra-cluster medium.

scholarly journals HST Observations of the Nuclei of EGB 6 (0950+139) and Abell 58 (V605 Aql)

1993 ◽  
Vol 155 ◽  
pp. 499-499
Author(s):  
Howard E. Bond ◽  
Michael G. Meakes ◽  
James W. Liebert ◽  
Alvio Renzini
Keyword(s):  
Emission Line ◽  
Surface Brightness ◽  
Hubble Space Telescope ◽  
Planetary Nebulae ◽  
Central Star ◽  
Space Telescope ◽  
Faint Object ◽  
Low Surface Brightness ◽  
Central Stars

This paper deals with the central stars of two large, low-surface-brightness planetary nebulae: V605 Aquilae, central star of Abell 58, and 0950+139, central star of EGB 6. Both of these nuclei are associated with compact emission-line nebulosities, which are unresolved from the ground. We obtained images with the Faint Object Camera (FOC) on the Hubble Space Telescope of both objects, in order to determine the nature of the compact nebulae.

scholarly journals Globular cluster photometry with the Hubble Space Telescope. 2: U, V, and I measurements of M15

1994 ◽  
Vol 107 ◽  
pp. 1745 ◽  
Author(s):  
Brian Yanny ◽  
Puragra Guhathakurta ◽  
John N. Bahcall ◽  
Donald P. Schneider
Keyword(s):  
Globular Cluster ◽  
Hubble Space Telescope ◽  
Space Telescope

scholarly journals Measuring proper motions of galactic dwarf galaxies with Hubble Space Telescope

2007 ◽  
Vol 3 (S248) ◽  
pp. 244-247 ◽  
Author(s):  
S. Piatek ◽  
C. Pryor
Keyword(s):  
Research Group ◽  
Dwarf Galaxies ◽  
Hubble Space Telescope ◽  
Proper Motions ◽  
Future Directions ◽  
Space Telescope ◽  
The Past ◽  
Scientific Justification ◽  
Satellite Galaxies ◽  
Using Data

AbstractOver the past several years, our research group has been measuring proper motions for nearby dwarf satellite galaxies using data taken with the Hubble Space Telescope. In order to measure proper motions with an expected size of several tens of milliarcseconds per century using a time baseline of 2-4 years, our work required that positions of stars and QSOs be measured to an accuracy of ~0.25 mas (~0.005 pixel). This contribution reviews the scientific justification of this work and our methodology. It concludes with a few general results and future directions.

scholarly journals Low Surface Brightness Dwarf Galaxies in Nearby Clusters

1999 ◽  
Vol 171 ◽  
pp. 157-159
Author(s):  
Kristin Chiboucas ◽  
Mario Mateo
Keyword(s):  
Galaxy Clusters ◽  
Surface Brightness ◽  
Dwarf Galaxies ◽  
Cluster Galaxy ◽  
V Band ◽  
Luminosity Functions ◽  
Low Surface Brightness ◽  
Initial Results

AbstractWe present initial results of a study of low surface brightness dwarf galaxies within galaxy clusters at z ≤ .03 as part of our program to determine the clustering properties, luminosity functions, and morphologies of dwarf galaxies in a wider range of cluster environments. In addition to deep V-band images covering up to 1 deg2 in each of 13 different clusters, we have obtained velocities from fiber spectroscopy for 235 galaxies in A3526. In A3526, we find a drop in cluster galaxy counts at intermediate magnitudes which is supported by our spectroscopic results.

scholarly journals The HST large programme on NGC 6752 – III. Detection of the peak of the white dwarf luminosity function

2019 ◽  
Vol 488 (3) ◽  
pp. 3857-3865
Author(s):  
L R Bedin ◽  
M Salaris ◽  
J Anderson ◽  
M Libralato ◽  
D Apai ◽  
...  
Keyword(s):  
Globular Cluster ◽  
White Dwarf ◽  
Luminosity Function ◽  
Main Sequence ◽  
Hubble Space Telescope ◽  
Horizontal Branch ◽  
Space Telescope

ABSTRACT We report on the white dwarf (WD) cooling sequence of the old globular cluster NGC 6752, which is chemically complex and hosts a blue horizontal branch. This is one of the last globular cluster WD cooling sequences accessible to imaging by the Hubble Space Telescope. Our photometry and completeness tests show that we have reached the peak of the luminosity function of the WD cooling sequence, at a magnitude mF606W  = 29.4 ± 0.1, which is consistent with a formal age of ∼14 Gyr. This age is also consistent with the age from fits to the main-sequence turn-off (13–14 Gyr), reinforcing our conclusion that we observe the expected accumulation of WDs along the cooling sequence.

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