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WFC3 Infrared Spectroscopic Parallel Survey (WISP)

Atek et al., 2010, ApJ, 723, 104

See also: Dai et al., 2015, in prep | External Team Page

Introduction

Description of Data Products

Data Access

Download README

Introduction

Example of how the pure parallel program works. While a nearby quasar is observed by COS, the WFC3 is turned on to collect data on a nearby, random parallel field.
Locations of the WISP parallel fields. There are a total of 385 fields within the program: 136 have been released as HLSPs at MAST to-date.
WISP is a large HST "pure-parallel" program using the WFC3 G102 and G141 grisms to obtain images, spectra, and catalogs of star forming galaxies between redshifts 0.5 to 2.5. The primary science goals are to measure the star formation history over the last ~10 billion years, probe galaxy clustering on Mpc scales at redshifts 1 < z < 2, constrain the evolution of dust extinction and metallicity as functions of mass and luminosity, and to conduct a serendeipitous search for highly luminous Lyman alpha emitters beyond redshifts z > 6.

Description of Data Products

Each galaxy+instrument is organized into a subdirectory structure, based on the Parallel Field ("par") number.

Example (Parallel Field #152): par152/

Several files are available in each fields' subdirectory. The data products all start with the same prefix ("hlsp_wisp_hst_wfc3"). The file names also include the field number ("par1", "par22", etc.), and the filters associated with the data product, which can be either "all", "f110w", "f140w", "g102", "g141", or a hyphen-separated combination. The file extensions and contents of the files are:

  1. 1dspectra/ = Subdirectory containing the extracted spectra for all objects in the field. It's contents are as follows:
    1. _spectra-header.txt This text file contains header information for each extracted spectrum, such as the central coordinates for the first exposure, the filters used, and exposure times. It also includes descriptions of what each column represents within the "_spec1d.dat" files. The same header applies for each extracted spectrum in the folder.
    2. _spec1d.dat These text tables contain the wavelengths, fluxes, flux errors, flux contaminations, and flux source flag for each target. The "zeroth" column (last column in the file) is a flag that can be one of three integers: 0=no contamination, 1=contamination from the zeroth order, and 2=edge truncation. The source ID is included in the filename, e.g., "hlsp_wisp_hst_wfc3_par1-0025a_g102-g141_v5.0_spec1d.dat" is the spectrum for source #25 in parallel field #1.
  2. _catalog-header.txt = This text file contains header information for the first exposure taken in the direct imager sequence of observations. Information includes the central coordinates and date/time of the (first) observation.
  3. _cat.txt = Source catalog for the given filter, derived from the direct images using SExtractor. Source IDs between 1000 and 2000 are sources detected only in the bluer filter, while sources with IDs greater than 2000 are detected only in the redder filter.
  4. _drz.fits = Drizzled science image for the given filter. The "f110w" and "f140w" are from the imager, the "g101" and "g141" are the 2D spectral images from the grism.

Data Access

Target Atlas

Each field has an entry in the table below. You can browse the entire directory contents using the "browse" link inside the "Field" column. Hover over any of the "IMG" links to see a preview image (both for the direct images and the grism images). Click on the "IMG" links to download the FITS files. Click on the "CAT" links to download the catalog FITS file for that filter/grism. You can also download a tarball of all the extracted spectra for the field using the links in the last column.
Note: The table is sortable after the rows' background colors become alternately colored white and blue. This takes a few seconds for most browsers. All other functionality is ready immediately.

Field
(Click to Sort)
RA (deg)
(Click to Sort)
DEC (deg)
(Click to Sort)
F110W F140W F160W G102 G141 Extracted Spectra
1     Browse 16.645713 15.146204   Download (tar)
2     Browse 21.290377 21.651712       Download (tar)
5     Browse 216.78225 57.859823   Download (tar)
6     Browse 27.570390 13.068069   Download (tar)
7     Browse 216.77906 57.893320   Download (tar)
8     Browse 177.96847 54.679560   Download (tar)
9     Browse 187.43703 7.8070387   Download (tar)
10   Browse 141.28486 48.952821   Download (tar)
11   Browse 165.57480 10.907745   Download (tar)
12   Browse 182.35821 45.723468   Download (tar)
14   Browse 38.735563 -4.1173142   Download (tar)
15   Browse 212.42897 26.367222   Download (tar)
16   Browse 38.726638 -4.1118046   Download (tar)
17   Browse 33.407710 12.914257   Download (tar)
19   Browse 38.724804 -4.1104872   Download (tar)
20   Browse 212.42332 26.372645   Download (tar)
21   Browse 141.97762 60.452168       Download (tar)
22   Browse 133.18592 3.1507454       Download (tar)
23   Browse 145.81550 5.4585128       Download (tar)
24   Browse 184.67244 29.882628       Download (tar)
26   Browse 131.32228 22.915069   Download (tar)
27   Browse 173.27249 3.4675232   Download (tar)
28   Browse 143.94024 14.462767       Download (tar)
29   Browse 180.74470 48.090088       Download (tar)
30   Browse 157.07569 39.286824       Download (tar)
31   Browse 130.86424 26.276506       Download (tar)
32   Browse 196.33441 -25.636778       Download (tar)
33   Browse 150.00930 12.747973   Download (tar)
34   Browse 143.73972 2.0332973       Download (tar)
35   Browse 195.94265 29.883973       Download (tar)
36   Browse 205.12807 41.386073   Download (tar)
37   Browse 205.12807 41.386073   Download (tar)
38   Browse 186.30317 -2.8196212       Download (tar)
39   Browse 152.40681 30.012332       Download (tar)
40   Browse 34.083395 -39.038725       Download (tar)
41   Browse 182.11469 45.645851   Download (tar)
42   Browse 150.26558 50.398988   Download (tar)
43   Browse 316.03267 -7.3812838   Download (tar)
44   Browse 168.06062 35.614210       Download (tar)
45   Browse 189.36115 1.4217246       Download (tar)
46   Browse 339.49477 -18.699296       Download (tar)
47   Browse 199.88237 27.443706       Download (tar)
49   Browse 221.18392 34.462369   Download (tar)
50   Browse 335.58480 9.6126435       Download (tar)
51   Browse 228.30447 36.555337       Download (tar)
52   Browse 202.59179 28.182489       Download (tar)
53   Browse 227.80077 40.426747       Download (tar)
54   Browse 236.23491 48.756031       Download (tar)
55   Browse 185.22554 -2.0803609   Download (tar)
56   Browse 244.20848 6.6112124       Download (tar)
57   Browse 188.31783 47.888905       Download (tar)
58   Browse 188.17963 -0.56093015       Download (tar)
59   Browse 237.59132 39.987509       Download (tar)
61   Browse 347.25305 -9.1196971       Download (tar)
62   Browse 195.31531 -0.0067215264   Download (tar)
65   Browse 244.72007 33.665338   Download (tar)
68   Browse 353.38453 39.355464   Download (tar)
70   Browse 60.507606 -5.6050122       Download (tar)
72   Browse 238.71209 36.397703   Download (tar)
74   Browse 137.70257 10.290439   Download (tar)
75   Browse 138.92930 47.967898       Download (tar)
77   Browse 356.25411 15.165467       Download (tar)
78   Browse 352.14051 5.1725302   Download (tar)
81   Browse 17.537465 -2.3738229   Download (tar)
82   Browse 242.20875 60.236371       Download (tar)
85   Browse 134.66566 29.148501       Download (tar)
87   Browse 146.69604 47.251098   Download (tar)
88   Browse 147.74663 11.764222       Download (tar)
90   Browse 15.234184 2.4316651       Download (tar)
92   Browse 141.53309 12.648313       Download (tar)
93   Browse 184.66481 29.738487       Download (tar)
94   Browse 331.36042 -0.29917056   Download (tar)
97   Browse 17.525232 -2.3979576   Download (tar)
98   Browse 151.92216 50.223162       Download (tar)
99   Browse 144.24305 29.530798       Download (tar)
101 Browse 208.35286 3.4965575       Download (tar)
105 Browse 230.08371 -24.999888       Download (tar)
106 Browse 171.03750 42.038962       Download (tar)
107 Browse 200.47854 46.809950       Download (tar)
108 Browse 182.69353 36.957706       Download (tar)
109 Browse 200.35431 3.5596138       Download (tar)
110 Browse 194.24500 54.521869       Download (tar)
113 Browse 139.84098 55.310302       Download (tar)
114 Browse 160.23996 6.1239609   Download (tar)
115 Browse 169.72762 2.2844130   Download (tar)
116 Browse 161.70382 13.041686       Download (tar)
118 Browse 170.22987 3.3781183       Download (tar)
119 Browse 169.38032 26.532604       Download (tar)
120 Browse 209.21228 17.041716   Download (tar)
121 Browse 180.40237 -13.944577   Download (tar)
122 Browse 230.28822 59.674864       Download (tar)
123 Browse 222.68054 27.161772       Download (tar)
124 Browse 278.11535 53.749422   Download (tar)
125 Browse 259.22296 66.050316       Download (tar)
126 Browse 205.43695 5.0620260       Download (tar)
127 Browse 40.838250 -72.187316       Download (tar)
128 Browse 20.690610 -28.634566       Download (tar)
129 Browse 165.57572 20.867628   Download (tar)
130 Browse 46.923242 -72.740371       Download (tar)
131 Browse 162.09333 13.062948   Download (tar)
132 Browse 171.58022 -1.7236567   Download (tar)
133 Browse 323.46352 -49.085984       Download (tar)
135 Browse 170.59875 57.847041   Download (tar)
136 Browse 186.61783 5.3832496   Download (tar)
137 Browse 255.18014 29.377388       Download (tar)
138 Browse 236.38667 9.5670100       Download (tar)
139 Browse 205.60851 18.699485       Download (tar)
140 Browse 208.85204 0.77799229       Download (tar)
141 Browse 223.56821 16.172510       Download (tar)
143 Browse 210.58950 9.7632891   Download (tar)
144 Browse 196.29972 -10.592445       Download (tar)
145 Browse 30.515698 -11.452537       Download (tar)
146 Browse 33.105107 -7.5368316   Download (tar)
147 Browse 359.58218 -10.248989   Download (tar)
151 Browse 232.11176 28.345703       Download (tar)
152 Browse 223.15155 31.624885       Download (tar)
153 Browse 353.41219 39.420877       Download (tar)
154 Browse 239.23755 63.747870       Download (tar)
155 Browse 255.79593 61.599041       Download (tar)
156 Browse 246.35308 57.363627       Download (tar)
157 Browse 226.28743 56.733351       Download (tar)
158 Browse 234.57526 57.511378       Download (tar)
159 Browse 314.12305 -4.8042350       Download (tar)
160 Browse 225.02702 53.235153       Download (tar)
161 Browse 242.92943 52.362923       Download (tar)
162 Browse 254.87709 37.497546       Download (tar)
163 Browse 155.77533 39.549332       Download (tar)
164 Browse 346.78566 21.171593       Download (tar)
165 Browse 346.79888 21.190597       Download (tar)
166 Browse 346.81693 21.205759       Download (tar)
167 Browse 25.348670 13.624747   Download (tar)
168 Browse 24.203208 41.492269       Download (tar)
170 Browse 3.1071815 -10.467697       Download (tar)
171 Browse 151.73348 -29.889687       Download (tar)
172 Browse 303.74482 -26.983476       Download (tar)
173 Browse 28.858483 -9.0436026       Download (tar)