J/AJ/132/1729 Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006)
The Hubble Ultra Deep Field.
Beckwith S.V.W., Stiavelli M., Koekemoer A.M., Caldwell J.A.R.,
Ferguson H.C., Hook R., Lucas R.A., Bergeron L.E., Corbin M., Jogee S.,
Panagia N., Robberto M., Royle P., Somerville R.S., Sosey M.
<Astron. J., 132, 1729-1755 (2006)>
=2006AJ....132.1729B 2006AJ....132.1729B
ADC_Keywords: Surveys ; Galaxies, photometry ; Photometry, HST
Keywords: astronomical data bases: miscellaneous - early universe -
galaxies: evolution - galaxies: high-redshift
Abstract:
This paper presents the Hubble Ultra Deep Field (HUDF), a 1 million
secs exposure of an 11arcmin2 region in the southern sky with the
Advanced Camera for Surveys on the Hubble Space Telescope using
Director's Discretionary Time. The exposure time was divided among
four filters, F435W (B435), F606W (V606), F775W (i775), and F850LP
(z850), to give approximately uniform limiting magnitudes mAB∼29 for
point sources. The image contains at least 10000 objects, presented
here as a catalog, the vast majority of which are galaxies. Visual
inspection of the images shows few if any galaxies at redshifts
greater than ∼4 that resemble present-day spiral or elliptical
galaxies. The image reinforces the conclusion from the original Hubble
Deep Field that galaxies evolved strongly during the first few billion
years in the infancy of the universe. Using the Lyman break dropout
method to derive samples of galaxies at redshifts between 4 and 7, it
is possible to study the apparent evolution of the galaxy luminosity
function and number density.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 75 504 B435-dropout sources
table7.dat 75 204 V606-dropout sources
table8.dat 75 54 i775-dropout sources
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See also:
II/258 : Hubble Ultra Deep Field Catalog (UDF) (STScI, 2004)
Byte-by-byte Description of file: table6.dat table7.dat table8.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- UDF The STScI identification number,
Cat. II/258 (1)
7- 14 F8.5 deg RAdeg Right Ascension in decimal degrees (J2000)
16- 24 F9.5 deg DEdeg Declination in decimal degrees (J2000)
26- 30 F5.3 arcsec r50 Radius containing 50% of the flux
32- 36 F5.2 mag Bmag ? The B (F435W) band magnitude
38- 42 F5.2 mag e_Bmag ? The 1σ error in Bmag
44- 48 F5.2 mag Vmag ? The V (F606W) band magnitude
50- 53 F4.2 mag e_Vmag ? The 1σ error in Vmag
55- 59 F5.2 mag imag ? The i (F775W) band magnitude
61- 64 F4.2 mag e_imag ? The 1σ error in imag
66- 70 F5.2 mag zmag The z (F850LP) band magnitude
72- 75 F4.2 mag e_zmag The 1σ error in zmag
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Note (1): UDF number of table8.dat corresponds to UDF number of
file udf-z.dat in Cat. II/258, and are identified as
UDF 3NNNN in Simbad,
(i.e, in table8.dat, "UDF = 229" is "UDF 30229 in Simbad)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 26-Sep-2008