Stellar Variability in the Central Populations of 47 Tucanae from WF/PC Observations with the Hubble Space Telescope. I. Project Overview, Reduction Techniques, and First Results

1995 ◽  
Vol 447 ◽  
pp. 191 ◽  
Author(s):  
Ronald L. Gilliland ◽  
Peter D. Edmonds ◽  
Larry Petro ◽  
Abhijit Saha ◽  
Michael M. Shara
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope ◽  
Reduction Techniques ◽  
First Results

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 First Results from a Panchromatic HST/WFC3 Imaging Study of the Young, Rapidly Evolving Planetary Nebulae NGC 7027 and NGC 6302

Galaxies ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 49
Author(s):  
Joel H. Kastner ◽  
Jesse Bublitz ◽  
Bruce Balick ◽  
Rodolfo Montez ◽  
Adam Frank ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Imaging Study ◽  
Planetary Nebulae ◽  
Wide Field ◽  
Space Telescope ◽  
Near Ir ◽  
Ngc 7027 ◽  
First Results ◽  
Initial Color ◽  
Line Imaging

We present the first results from comprehensive, near-UV-to-near-IR Hubble Space Telescope Wide Field Camera 3 (WFC3) emission-line imaging studies of two young planetary nebulae (PNe), NGC 7027 and NGC 6302. These two objects represent key sources for purposes of understanding PNe shaping processes. Both nebulae feature axisymmetric and point-symmetric (bipolar) structures and, despite hot central stars and high nebular excitation states, both harbor large masses of molecular gas and dust. The sweeping wavelength coverage of our Cycle 27 Hubble Space Telescope (HST)/WFC3 imaging surveys targeting these two rapidly evolving PNe will provide a battery of essential tests for theories describing the structural and chemical evolution of evolved star ejecta. Here, we present initial color overlays for selected images, and we highlight some of the first results gleaned from the surveys.

scholarly journals The Galaxy Populations of Clusters at High Redshifts: A “Hubble Atlas”

1996 ◽  
Vol 171 ◽  
pp. 455-455
Author(s):  
S.C. Trager ◽  
S.M. Faber ◽  
A. Dressler ◽  
Keyword(s):  
Galaxy Clusters ◽  
Hubble Space Telescope ◽  
Space Telescope ◽  
The Galaxy ◽  
First Results ◽  
Galaxy Populations

We present first results of a Hubble Space Telescope imaging and a Palomar and Keck Observatories spectroscopy program of distant, rich galaxy clusters in the form of a “Hubble Atlas” of morphological types at z ≥ 0.75. Two clusters from the compilation of Gunn, Hoessel & Oke (1985) have been studied to date, Cl1322+3027 at z ≈ 0.76 and Cl1603+4313 at z ≈ 0.90.

An AI scheduling environment for the Hubble Space Telescope

1991 ◽  
Author(s):  
JEFFREY SPONSLER ◽  
MARK JOHNSTON ◽  
GLENN MILLER ◽  
ANTHONY KRUEGER ◽  
MICHAEL LUCKS ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope
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