J/A+A/575/A75 MUSE 3D view of HDF-S (Bacon+, 2015)
The MUSE 3D view of the Hubble Deep Field South.
Bacon R., Brinchmann J., Richard J., Contini T., Drake A., Franx M.,
Tacchella S., Vernet J., Wisotzki L., Blaizot J., Bouche N., Bouwens R.,
Cantalupo S., Carollo C.M., Carton D., Caruana J., Clement B., Dreizler S.,
Epinat B., Guiderdoni B., Herenz C., Husser T.-O., Kamann S., Kerutt J.,
Kollatschny W., Krajnovic D., Lilly S., Martinsson T., Michel-Dansac L.,
Patricio V., Schaye J., Shirazi M., Soto K., Soucail G., Steinmetz M.,
Urrutia T., Weilbacher P., De Zeeuw T.
<Astron. Astrophys., 575, A75-75 (2015)>
=2015A&A...575A..75B 2015A&A...575A..75B
ADC_Keywords: Galaxies, spectra ; Spectroscopy ; Photometry, HST ; Redshifts
Keywords: cosmology: observations - galaxies: evolution -
galaxies: high-redshift - techniques: imaging spectroscopy -
galaxies: formation
Abstract:
We observed Hubble Deep Field South with the new panoramic
integral-field spectrograph MUSE that we built and have just
commissioned at the VLT. The data cube resulting from 27h of
integration covers one arcmin2 field of view at an unprecedented
depth with a 1σ emission-line surface brightness limit of
1x10-19erg/s/cm2/arcsec2, and contains ∼90000 spectra. We present
the combined and calibrated data cube, and we performed a first-pass
analysis of the sources detected in the Hubble Deep Field South
imaging. We measured the redshifts of 189 sources up to a magnitude
I814=29.5, increasing the number of known spectroscopic redshifts in
this field by more than an order of magnitude. We also discovered 26
Lyα emitting galaxies that are not detected in the HST WFPC2
deep broad-band images. The intermediate spectral resolution of
2.3Å allows us to separate resolved asymmetric Lyα emitters,
[OII]3727 emitters, and [CIII]1908 emitters, and the broad
instantaneous wavelength range of 4500Å helps to identify single
emission lines, such as [OIII]5007, Hβ, and Hα, over a very
wide redshift range. We also show how the three-dimensional
information of MUSE helps to resolve sources that are confused at
ground-based image quality. Overall, secure identifications are
provided for 83% of the 227 emission line sources detected in the MUSE
data cube and for 32% of the 586 sources identified in the HST
catalogue. The overall redshift distribution is fairly flat to z=6.3,
with a reduction between z=1.5 to 2.9, in the well-known redshift
desert. The field of view of MUSE also allowed us to detect 17 groups
within the field. We checked that the number counts of [OII]3727 and
Lyα emitters are roughly consistent with predictions from the
literature. Using two examples, we demonstrate that MUSE is able to
provide exquisite spatially resolved spectroscopic information on the
intermediate-redshift galaxies present in the field. This unique data
set can be used for a wide range of follow-up studies. We release the
data cube, the associated products, and the source catalogue with
redshifts, spectra, and emission-line fluxes.
Description:
The HDFS was observed during six nights in July 25-29, 31 and August
2, 3 2014 of the last commissioning run of MUSE. We used the nominal
wavelength range (4750-9300Å) and performed a series of exposures
of 30min each.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 124 586 Basic data and redshifts on sources with
spectra in the HDF-S
tablea2.dat 95 181 Line fluxes for galaxies with secure redshifts
tablea3.dat 95 18 Redshift comparison
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See also:
J/A+AS/145/111 : HDF-South catalogue of galaxies (Volonteri+, 2000)
J/AJ/119/486 : HDF-S: STIS imaging (Gardner+, 2000)
J/AJ/120/2747 : HDF-South WFPC2 observations (Casertano+, 2000)
J/ApJ/538/493 : HDF-South NICMOS field (Yahata+, 2000)
J/AJ/122/2190 : HDF-South multicolor observations (Vanzella+, 2001)
J/AJ/122/2205 : HDF-South K photometric redshift catalog (Rudnick+, 2001)
J/AJ/125/1107 : Ultra-deep near-IR observation in HDF-S (Labbe+, 2003)
J/AJ/126/1208 : UVBI magnitudes and redshifts in HDF-South (Sawicki+, 2003)
J/A+A/440/61 : FORS spectroscopy of HDFS galaxies (Rigopoulou+, 2005)
J/AJ/131/2383 : Photometry and spectroscopy in the HDF-S (Glazebrook+, 2006)
J/ApJ/723/1110 : MIPS 24um observations of the HDFS (Huynh+, 2010)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [0/585] Sequential number
4 A1 --- n_Seq [b] Source not in Casertano catalog (1)
6- 7 I2 h RAh Right ascension (J2000)
9- 10 I2 min RAm Right ascension (J2000)
12- 16 F5.2 s RAs Right ascension (J2000)
18 A1 --- DE- Declination sign (J2000)
19- 20 I2 deg DEd Declination (J2000)
22- 23 I2 arcmin DEm Declination (J2000)
25- 29 F5.2 arcsec DEs Declination (J2000)
31- 35 F5.2 mag Imag [21/31]?=- HST I (F814W) AB magnitude from
Casertano+, 2000, J/AJ/120/2747
37- 41 F5.3 mag e_Imag ? rms uncertainty on Imag
42 A1 --- f_Imag [a] Saturated Imag (1)
43- 47 F5.2 mag V-I ?=- V(F606W)-I(F814W) colour index
49- 53 F5.3 mag e_V-I ? rms uncertainty on V-I
55- 60 F6.4 --- z [0/6.3]?=- Redshift
62 I1 --- q_z [0/3] Confidence flag, 3=secure (2)
64-115 A52 --- Com Comments
117-118 I2 --- Nexp [0/54] Number of exposure
120-124 I5 --- HDFS [1332/10710]?=-1 HDFS identification number:
Casertano et al. 2000 (J/AJ/120/2747),
<[CDD2000] NNNNN> in Simbad
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Note (1): Notes as follows:
a = Saturated in the HST image.
b = Not in the Casertano et al. (2000AJ....120.2747C 2000AJ....120.2747C, Cat. J/AJ/120/2747)
catalogue but clearly detected in HST, thus photometry was done manually
on the HST images using the same aperture in each band.
Note (2): Confidence flag as follows:
0 = No secure or unique redshift determination possible
1 = Redshift likely to be correct but generally based on only one feature
2 = Redshift secure, but based on one feature
3 = Redshift secure, based on several features
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Seq [1/585] Sequential number
5- 9 F5.2 10-20W/m2/nm FLya ?=- Lyα line flux (1)
11- 14 F4.2 10-20W/m2/nm e_FLya ?=- rms uncertainty on FLya (1)
16- 20 F5.2 10-20W/m2/nm F1907 ?=- CIII]1906,1909Å line flux (1)
22- 27 F6.2 10-20W/m2/nm e_F1907 ?=- rms uncertainty on F1907 (1)
29- 34 F6.2 10-20W/m2/nm F3728 ?=- [OII]3727,3729Å line flux (1)
36- 39 F4.2 10-20W/m2/nm e_F3728 ?=- rms uncertainty on F3728 (1)
41- 45 F5.2 10-20W/m2/nm F3869 ?=- [NeIII]3869Å line flux (1)
47- 50 F4.2 10-20W/m2/nm e_F3869 ?=- rms uncertainty on F3869 (1)
52- 56 F5.2 10-20W/m2/nm FHb ?=- Hβ line flux (1)
58- 61 F4.2 10-20W/m2/nm e_FHb ?=- rms uncertainty on FHb (1)
63- 67 F5.2 10-20W/m2/nm F5007 ?=- [OIII]5007Å line flux (1)
69- 72 F4.2 10-20W/m2/nm e_F5007 ?=- rms uncertainty on F5007 (1)
74- 79 F6.2 10-20W/m2/nm FHa ?=- Hα line flux (1)
81- 84 F4.2 10-20W/m2/nm e_FHa ?=- rms uncertainty on FHa (1)
86- 90 F5.2 10-20W/m2/nm F6584 ?=- [NII]6584Å line flux (1)
92- 95 F4.2 10-20W/m2/nm e_F6584 ?=- rms uncertainty on F6584 (1)
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Note (1): in units of 10-18erg/s/cm2/Å.
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Byte-by-byte Description of file: tablea3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [2/87] Sequential number
5- 8 A4 --- --- [HDFS]
10- 28 A19 --- HDFS HDFS designation (JHHMMSS.ss+DDMMSS.s)
30- 31 I2 h RAh Right ascension (J2000)
33- 34 I2 min RAm Right ascension (J2000)
36- 40 F5.2 s RAs Right ascension (J2000)
42 A1 --- DE- Declination sign (J2000)
43- 44 I2 deg DEd Declination (J2000)
46- 47 I2 arcmin DEm Declination (J2000)
49- 53 F5.2 arcsec DEs Declination (J2000)
55- 61 F7.4 mag Imag [21/26]?=- HST I (F814W) AB magnitude
63- 70 F8.6 --- z [0/3.3]?=- MUSE redshift
72- 77 F6.4 --- zl [0.4/3.3]?=- Literature redshift
79- 85 A7 --- r_zl Reference for literature redshift (1)
87- 95 A9 --- Com Comments
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Note (1): References as follows:
S03 = Sawicki & Mallen-Ornelas (2003AJ....126.1208S 2003AJ....126.1208S, Cat. J/AJ/126/1208)
R05 = Rigopoulou et al. (2005A&A...440...61R 2005A&A...440...61R, Cat. J/A+A/440/61)
I05 = Iwata et al. (2005A&A...440..881I 2005A&A...440..881I)
G06 = Glazebrook et al. (2006AJ....131.2383G 2006AJ....131.2383G, Cat. J/AJ/131/2383)
W09 = Wuyts et al. (2009ApJ...706..885W 2009ApJ...706..885W)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 22-Apr-2015