Assigned ID: 828
----- Attempting Submission 1 (Sat Feb 26 00:12:51 GMT 2011) -----
HST Phase I Proposal 828 (dupuy.apt) successfully submitted.
----- Attempting Submission 2 (Sat Feb 26 03:00:02 GMT 2011) -----
Submission failed communicating with the submission server:
java.rmi.ConnectException: Connection refused to host: 130.167.1.97; nested exception is:
java.net.ConnectException: Operation timed out
Submission failed communicating with the submission server:
java.rmi.ConnectException: Connection refused to host: 130.167.1.97; nested exception is:
java.net.ConnectException: Operation timed out
Submission failed communicating with the submission server:
java.rmi.ConnectException: Connection refused to host: 130.167.1.97; nested exception is:
java.net.ConnectException: Connection refused
Submission failed communicating with the submission server:
java.rmi.ConnectException: Connection refused to host: 130.167.1.97; nested exception is:
java.net.ConnectException: Connection refused
----- Attempting Submission 1 (Fri Jul 08 19:58:58 GMT 2011) -----
Very Low-Mass Pleiades Binaries
We propose to advance the understanding of substellar models by developing a homogeneous sample of binaries intermediate between the ages of young star-forming (~few Myr) and field (~few Gyr) populations. We will establish this sample through high-resolution imaging of substellar objects in the Pleiades. The Pleiades is an ideal venue for such a study given its richness, accurate age (130+/-20~Myr), and well-determined distance (120.2+/-1.9 pc). Our sample will more than triple the sample of brown dwarfs observed by HST at the lowest masses (< 0.04 Msun). Combined with previous observations of Pleiades brown dwarfs, we will develop the first large sample of brown dwarf binaries of an intermediate age, which can be used to constrain the binary frequency and separation distribution. Our sample will also set the stage for future dynamical mass measurements in the Pleiades.
This is a binary survey of 13 brown dwarfs in the Pleiades using WFC3/UVIS. Each target requires one orbit to obtain 2 dithered images in each of F814W and F850LP. Dithering order is set by the need to dump the buffer during the longer F814W exposures. Overheads are dominated by CCD readout time, but we choose to keep the full field of UVIS rather than subarraying because the increased field of view may prove useful for absolute astrometry of the binaries in our sample and the gain by subarraying is marginal.
COOL STARS
12
false
0.0
0.0
false
false
false
false
SUPPORTED
STAR
BROWN DWARF
J2000
J2000
K = 16.03
STAR
BROWN DWARF
J2000
J2000
K = 16.09
STAR
BROWN DWARF
J2000
J2000
K = 16.10
STAR
BROWN DWARF
J2000
J2000
K = 16.39
STAR
BROWN DWARF
J2000
J2000
K = 16.51
STAR
BROWN DWARF
J2000
J2000
K = 16.56
STAR
BROWN DWARF
J2000
J2000
K = 16.70
STAR
BROWN DWARF
J2000
J2000
K = 16.73
STAR
BROWN DWARF
J2000
J2000
K = 16.93
STAR
BROWN DWARF
J2000
J2000
K = 16.97
STAR
BROWN DWARF
J2000
J2000
K = 17.00
STAR
BROWN DWARF
J2000
J2000
K = 14.84
STAR
BROWN DWARF
J2000
J2000
K = 14.45
WFC3/UVIS
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F850LP
WFC3/UVIS
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F850LP
WFC3/UVIS
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No
No
F814W
WFC3/UVIS
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No
F850LP
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No
F814W
WFC3/UVIS
Imaging
No
No
F850LP
WFC3/UVIS
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No
F814W
WFC3/UVIS
Imaging
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No
F850LP
WFC3/UVIS
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No
F814W
WFC3/UVIS
Imaging
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No
F850LP
WFC3/UVIS
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No
No
F814W
WFC3/UVIS
Imaging
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No
F850LP
WFC3/UVIS
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No
F814W
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No
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No
F814W
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No
F850LP
WFC3/UVIS
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No
F814W
WFC3/UVIS
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No
F850LP
WFC3/UVIS
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No
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WFC3/UVIS
Imaging
No
No
F850LP
WFC3/UVIS
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F850LP
WFC3/UVIS
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F850LP
POS-TARG
DITHER
0.145
LINE
false
false
2
46.84
WFC3-UVIS-DITHER-LINE
1
false
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