J/A+A/631/A20 GALACTICNUCLEUS JHKs imaging survey. II. (Nogueras-Lara+, 2019)
GALACTICNUCLEUS: A high angular resolution JHKs imaging survey of the Galactic
Centre.
II. First data release of the catalogue and the most detailed CMDs of the GC.
Nogueras-Lara F., Schoedel R., Gallego-Calvente A.T., Dong H.,
Gallego-Cano E., Shahzamanian B., Girard J.H.V., Nishiyama S., Najarro F.,
Neumayer N.
<Astron. Astrophys. 631, A20 (2019)>
=2019A&A...631A..20N 2019A&A...631A..20N (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Galactic center ; Photometry, infrared ; Extinction
Keywords: Galaxy: centre - Galaxy, bulge - Galaxy: structure -
stars: horizontal-branch - dust, extinction
Abstract:
The high extinction and extreme source crowding of the central regions
of the Milky Way are serious obstacles to the study of the structure
and stellar population of the Galactic centre (GC). Surveys that cover
the GC region (2MASS, UKIDSS, VVV, SIRIUS) do not have the necessary
high angular resolution. Therefore, a high angular resolution survey
in the near infrared is crucial to improve the state of the art. Here,
we present the GALACTICNUCLEUS catalogue, a near infrared JHKs high
angular resolution (0.2") survey of the nuclear bulge of the
Milky Way. We explain in detail the data reduction, data analysis,
calibration, and uncertainty estimation of the GALACTICNUCLEUS survey.
We assess the data quality comparing our results with previous
surveys. We obtained accurate JHKs photometry ∼3.3x106 stars in the
GC detecting around 20% in J, 65% in H and 90% in Ks. The survey
covers a total area of ∼0.3 square degrees, which corresponds to
∼6000pc2. The GALACTICNUCLEUS survey reaches 5 sigma detections for
J∼22mag, H∼21mag and Ks∼21mag. The uncertainties are below 0.05mag at
J∼21mag, H∼19mag and Ks∼18mag. The zero point systematic uncertainty
is ≲0.04mag in all three bands. We present colour-magnitude diagrams
for the different regions covered by the survey.
Description:
Catalogues specified in Table 1 of the manuscript. This is 7
catalogues for the different regions covered by the GALACTICNUCLEUS
catalogue: Central, NSD East, NSD West, Transition East, Transition
West, Inner Bulge North and Inner Bulge South. The catalogues follow
the structure presented in Table 2.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
central.dat 239 2009522 GALACTICNUCLEUS. Pointings 1-30 (Central)
(corrected version, 31-03-2020)
nsdeast.dat 239 488197 GALACTICNUCLEUS. Pointings D12-D18 (NSD East)
(corrected version, 31-03-2020)
nsdwest.dat 239 199481 GALACTICNUCLEUS. Pointings D9-D11, D19, D21
(NSD West) (corrected version, 31-03-2020)
teast.dat 239 162830 GALACTICNUCLEUS. Pointings T3-T4
(Transition East) (corrected version, 31-03-2020)
twest.dat 239 167985 GALACTICNUCLEUS. Pointings T7-T8
(Transition West) (corrected version, 31-03-2020)
ibnorth.dat 239 90300 GALACTICNUCLEUS. Pointings B1, B6
(Inner Bulge North) (corrected version, 31-03-2020)
ibsouth.dat 239 159607 GALACTICNUCLEUS. Pointings B2, B5
(Inner Bulge South) (corrected version, 31-03-2020)
--------------------------------------------------------------------------------
See also:
J/A+A/610/A83 : GALACTICNUCLEUS: JHKs imaging survey (Nogueras-Lara+, 2018)
Byte-by-byte Description of file: *.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 F9.5 deg RAdeg Right ascension combining detections (J2000)
(ra)
11- 21 F11.9 arcsec e_RAdeg Uncertainty on RA (dra)
23- 32 F10.6 deg DEdeg Declination combining detections (J2000)
(dec)
34- 44 F11.9 arcsec e_DEdeg Uncertainty on DE (ddec)
46- 54 F9.5 deg RAJdeg ?=0 Right ascension J-band detection (J2000)
(raJ) (1)
56- 66 F11.9 arcsec e_RAJdeg ?=0 Uncertainty on RAJ (draJ)
68- 77 F10.6 deg DEJdeg ?=0 Declination J-band detection (J2000)
(decJ) (1)
79- 89 F11.9 arcsec e_DEJdeg ?=0 Uncertainty on DEJ (ddecJ)
91- 99 F9.5 deg RAHdeg ?=0 Right ascension H-band detection (J2000)
(raH) (1)
101-111 F11.9 arcsec e_RAHdeg ?=0 Uncertainty on RAH (draH)
113-122 F10.6 deg DEHdeg ?=0 Declination H-band detection (J2000)
(decH) (1)
124-134 F11.9 arcsec e_DEHdeg ?=0 Uncertainty on DEH (ddecH)
136-144 F9.5 deg RAKsdeg ?=0 Right ascension Ks-band detection
(J2000) (raKs) (1)
146-156 F11.9 arcsec e_RAKsdeg ?=0 Uncertainty on RAKs (draKs)
158-167 F10.6 deg DEKsdeg Declination Ks-band detection (J2000)
(decKs) (1)
169-179 F11.9 arcsec e_DEKsdeg ?=0 Uncertainty on DEKs (ddecKs)
181-188 F8.5 mag Jmag ?=99 J-band magnitude (J) (2)
190-197 F8.5 mag e_Jmag ?=99 Uncertainty on J-band magnitude (dJ)
199-206 F8.5 mag Hmag ?=99 H-band magnitude (H) (2)
208-215 F8.5 mag e_Hmag ?=99 Uncertainty on H-band magnitude (dH)
217-224 F8.5 mag Ksmag ?=99 Ks-band magnitude (Ks) (2)
226-233 F8.5 mag e_Ksmag ?=99 Uncertainty on Ks-band magnitude (dKs)
235 I1 --- iJ J-band detection in iJ pointings (iJ) (3)
237 I1 --- iH H-band detection in iH pointings (iH) (3)
239 I1 --- iKs Ks-band detection in iKs pointings (iKs) (3)
--------------------------------------------------------------------------------
Note (1): A coordinate value equals to zero means that a star was not detected
in a given band.
Note (2): A magnitude value equals to 99 indicates that there is no detection
for a given source.
Note (3): iJ, iH and iKs indicate the number of fields where a star were
detected to obtain its final photometry.
--------------------------------------------------------------------------------
History:
From Francisco Nogueras-Lara, fnoguer(ay)iaa.es
Acknowledgements:
The research leading to these results has received funding from the
European Research Council under the European Union's Seventh Framework
Programme (FP7/2007-2013) / ERC grant agreement No [614922]. This
work is based on observations made with ESO Telescopes at the La Silla
Paranal Observatory under programmes IDs 195.B-0283 and 091.B-0418. We
thank the staff of ESO for their great efforts and helpfulness. Author
F N-L acknowledges financial support from the State Agency for
Research of the Spanish MCIU through the "Center of Excellence Severo
Ochoa" award for the Instituto de Astrofisica de Andalucia
(SEV-2017-0709). F N-L acknowledges financial support from a MECD
pre-doctoral contract, code FPU14/01700. F N acknowledges financial
support through Spanish grants ESP2015-65597-C4-1-R and
ESP2017-86582-C4-1-R (MINECO/FEDER). N.N. acknowledges support by
Sonderforschungsbereich SFB 881 'The Milky Way System' (subproject B8)
of the German Research Foundation (DFG).
References:
Nogueras-Lara F., Paper I 2018A&A...610A..83N 2018A&A...610A..83N, Cat. J/A+A/610/A83
History:
15-Oct-2019: on-line version
31-Mar-2020: corrected files, from author
(End) F. Nogueras-Lara [IAA-CSIC, Spain], P. Vannier [CDS] 21-Aug-2019