Proper Motions of Dwarf Spheroidal Galaxies from [ITAL]Hubble Space Telescope[/ITAL] Imaging. I. Method and a Preliminary Measurement for Fornax

2002 ◽  
Vol 124 (6) ◽  
pp. 3198-3221 ◽  
Author(s):  
Slawomir Piatek ◽  
Carlton Pryor ◽  
Edward W. Olszewski ◽  
Hugh C. Harris ◽  
Mario Mateo ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Proper Motions ◽  
Preliminary Measurement ◽  
Space Telescope ◽  
Dwarf Spheroidal Galaxies ◽  
Spheroidal Galaxies

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.

Proper Motions of Dwarf Spheroidal Galaxies fromHubble Space TelescopeImaging. II. Measurement for Carina

2003 ◽  
Vol 126 (5) ◽  
pp. 2346-2361 ◽  
Author(s):  
Slawomir Piatek ◽  
Carlton Pryor ◽  
Edward W. Olszewski ◽  
Hugh C. Harris ◽  
Mario Mateo ◽  
...  
Keyword(s):  
Proper Motions ◽  
Dwarf Spheroidal Galaxies ◽  
Spheroidal Galaxies

Internal kinematics of multiple stellar populations in globular clusters

2019 ◽  
Vol 14 (S351) ◽  
pp. 324-328
Author(s):  
Mattia Libralato
Keyword(s):  
High Precision ◽  
Globular Clusters ◽  
Hubble Space Telescope ◽  
Stellar Populations ◽  
Stellar Systems ◽  
Proper Motions ◽  
Space Telescope ◽  
Formation And Evolution ◽  
Galactic Globular Clusters ◽  
Shed Light

AbstractSpectroscopy and photometry have revealed existence, complexity and properties of the multiple stellar populations (mPOPs) hosted in Galactic globular clusters. However, the conundrum of the formation and evolution of mPOPs is far from being completely exploited: the available pieces of information seem not enough to shed light on these topics. Astrometry, and in particular high-precision proper motions, can provide us the sought-after answers about how mPOPs formed and have evolved in these ancient stellar systems. In the following, I present a brief overview of the observational results on the internal kinematics of the mPOPs in some GCs thanks to Hubble Space Telescope high-precision proper motions.

scholarly journals Proper Motions of Dwarf Spheroidal Galaxies fromHubble Space TelescopeImaging. V. Final Measurement for Fornax

2007 ◽  
Vol 133 (3) ◽  
pp. 818-844 ◽  
Author(s):  
Slawomir Piatek ◽  
Carlton Pryor ◽  
Paul Bristow ◽  
Edward W. Olszewski ◽  
Hugh C. Harris ◽  
...  
Keyword(s):  
Proper Motions ◽  
Dwarf Spheroidal Galaxies ◽  
Final Measurement ◽  
Spheroidal Galaxies

scholarly journals The Y dwarf population with HST: unlocking the secrets of our coolest neighbours – I. Overview and first astrometric results

2020 ◽  
Vol 501 (1) ◽  
pp. 911-915
Author(s):  
C Fontanive ◽  
L R Bedin ◽  
D C Bardalez Gagliuffi
Keyword(s):  
Proper Motion ◽  
Hubble Space Telescope ◽  
Proper Motions ◽  
Brown Dwarf ◽  
Space Telescope ◽  
First Results

ABSTRACT In this paper, we present our project that aims at determining accurate distances and proper motions for the Y brown dwarf population using the Hubble Space Telescope. We validate the program with our first results, using a single new epoch of observations of the Y0pec dwarf WISE J163940.83−684738.6. These new data allowed us to refine its proper motion and improve the accuracy of its parallax by a factor of three compared to previous determinations, now constrained to ϖ = 211.11 ± 0.56 mas. This newly derived absolute parallax corresponds to a distance of 4.737 ± 0.013 pc, an exquisite and unprecedented precision for faint ultracool Y dwarfs.

scholarly journals Proper Motions of Dwarf Spheroidal Galaxies fromHubble Space TelescopeImaging. III. Measurement for Ursa Minor

2005 ◽  
Vol 130 (1) ◽  
pp. 95-115 ◽  
Author(s):  
Slawomir Piatek ◽  
Carlton Pryor ◽  
Paul Bristow ◽  
Edward W. Olszewski ◽  
Hugh C. Harris ◽  
...  
Keyword(s):  
Proper Motions ◽  
Dwarf Spheroidal Galaxies ◽  
Ursa Minor ◽  
Spheroidal Galaxies

scholarly journals Proper Motions of the HH 111 Jet Observed with the [ITAL]Hubble Space Telescope[/ITAL]

2001 ◽  
Vol 559 (2) ◽  
pp. L157-L161 ◽  
Author(s):  
Patrick Hartigan ◽  
Jon A. Morse ◽  
Bo Reipurth ◽  
Steve Heathcote ◽  
John Bally
Keyword(s):  
Hubble Space Telescope ◽  
Proper Motions ◽  
Space Telescope

scholarly journals Hubble Space Telescope Proper Motions and Stellar Dynamics in the Core of the Globular Cluster 47 Tucanae

2006 ◽  
Vol 166 (1) ◽  
pp. 249-297 ◽  
Author(s):  
Dean E. McLaughlin ◽  
Jay Anderson ◽  
Georges Meylan ◽  
Karl Gebhardt ◽  
Carlton Pryor ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Hubble Space Telescope ◽  
Stellar Dynamics ◽  
Proper Motions ◽  
Space Telescope ◽  
The Core

scholarly journals Improved Hubble Space Telescope proper motions for Tycho-G and other stars in the remnant of Tycho's Supernova 1572

2014 ◽  
Vol 439 (1) ◽  
pp. 354-371 ◽  
Author(s):  
L. R. Bedin ◽  
P. Ruiz-Lapuente ◽  
J. I. González Hernández ◽  
R. Canal ◽  
A. V. Filippenko ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Proper Motions ◽  
Space Telescope
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