J/A+A/647/A169 VVV survey near-infrared colour catalogue (Herpich+, 2021)
VVV survey near-infrared colour catalogue of known variable stars.
Herpich F.R., Ferreira Lopes C.E., Saito R.K., Minniti D., Ederoclite A.,
Ferreira T.S., Catelan M.
<Astron. Astrophys. 647, A169 (2021)>
=2021A&A...647A.169H 2021A&A...647A.169H (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Stars, variable ; Photometry, infrared
Keywords: stars: variables: general - Galaxy: bulge - Galaxy: disk
Abstract:
The Vista Variables in the Via Lactea (VVV) near-infrared (IR)
variability survey explores some of the most complicated regions of
the Milky Way bulge and disk in terms of high extinction and high
crowding.
We add a new wavelength dimension to the optical information available
at the American Association of Variable Star Observers International
Variable Star Index (VSX-AAVSO) catalogue to test the VVV survey
near-IR photometry to better characterise these objects.
We cross-match the VVV and the VSX-AAVSO catalogues along with Gaia
Data Release 2 photometry and parallax.
We present a catalogue that includes accurate individual coordinates,
near-IR magnitudes (ZYJHKs), extinctions AKs, and distances based on
Gaia parallaxes. We also show the near-IR CMDs and spatial
distributions for the different VSX types of variable stars, including
important distance indicators, such as RR Lyrae, Cepheids and Miras.
By analysing the photometric flags in our catalogue, we found that
around 20% of the stars with measured and verified variability are
flagged as "non-stellar source", even when they are outside of the
saturation and/or noise regimes. Additionally, we pair-matched our
sample with the VIVA catalogue and found that more than half of our
sources are missing from the VVV variability list, mostly due to low
signal-to-noise observations or photometric problems with a small
percentage due to failures in the selection process. Conclusions. Our
results suggest that the current knowledge about variability in the
Galaxy is biased to the nearby, low extincted stars. The present
catalogue also provides the groundwork to characterise the results of
future large variability surveys like the Vera C. Rubin
Observatory's Legacy Survey of Space and Time in the heavily crowded
and reddened regions of the Galactic plane, as wellas follow-up
campaigns to characterise specific types of variables. The analysis of
the miss-flagged stars can be used to improve the photometric
classification of the VVV data allowing to expand the amount of data
considered useful for science purposes. Besides, we provide an
additional list of stars missed by the VIVA procedures for which the
observations are actually good and they were missed due to some
failure in the VIVA selection process.
Description:
Compilation of data for VVV survey, Gaia-DR2 and VIVA catalogues for
known variables in VSX.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 451 701256 Catalogue of known variables
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See also:
I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 12 F12.8 deg RAdeg VVV right ascension (J2000 (RA_(VVV))
14- 25 F12.8 deg DEdeg VVV declination (J2000) (DEC_(VVV))
27- 36 F10.6 deg GLON [] VVV Galactic longitude (l)
38- 47 F10.6 deg GLAT VVV Galactic latitude (b)
49- 54 F6.3 mag Zmag ?=- Z magnitude (MAG_Z)
56- 60 F5.3 mag e_Zmag ?=- Z magnitude error (ERR_Z)
62- 64 I3 --- f_Zmag ?=- Z magnitude photometric flag (F_Z)
66- 71 F6.3 mag Ymag ?=- Y magnitude (MAG_Y)
73- 77 F5.3 mag e_Ymag ?=- Y magnitude error (ERR_Y)
79- 81 I3 --- f_Ymag ?=- Y magnitude photometric flag (F_Y)
83- 88 F6.3 mag Jmag ?=- J magnitude (MAG_J)
90- 94 F5.3 mag e_Jmag ?=- J magnitude error (ERR_J)
96- 98 I3 --- f_Jmag ?=- J magnitude photometric flag (F_J)
100-105 F6.3 mag Hmag ?=- H magnitude (MAG_H)
107-111 F5.3 mag e_Hmag ?=- H magnitude error (ERR_H)
113-115 I3 --- f_Hmag ?=- H magnitude photometric flag (F_H)
117-122 F6.3 mag Ksmag ?=- Ks magnitude (MAG_Ks)
124-128 F5.3 mag e_Ksmag ?=- Ks magnitude error (ERR_Ks)
130-132 I3 --- f_Ksmag ?=- Ks magnitude photometric flag (F_Ks)
134-162 A29 --- Name VSX name (Name)
164-170 I7 --- OID VSX ID (OID)
172-189 A18 --- Type VSX type (Type)
191-201 F11.6 d Per ?=- Period from VSX (Period)
203-211 F9.5 deg RAGdeg Gaia DR2 right ascension (J2000) (RAJ2000)
213-221 F9.5 deg DEGdeg Gaia DR2 declination (J2000) (DEJ2000)
223-232 F10.4 mas Plx ?=- Gaia DR2 parallax (parallax)
234-239 F6.4 mas e_Plx ?=- Gaia DR2 parallax error (parallax_error)
241-250 F10.4 --- RPlx ?=- Gaia DR2 parallax divided by its error
(parallaxovererror)
252-259 F8.6 mag AKs ?=- Extinction for AKs (AKs)
261-268 F8.6 mag E(J-Ks) ?=- Extinction E(J-Ks) (EJKs)
270-293 F24.15 pc Dist ?=- Distance using parallax (distance)
295-318 F24.15 pc x ?=- x distance for parallax (x)
320-343 F24.15 pc y ?=- y distance for parallax (y)
345-368 F24.15 pc z ?=- z distance for parallax (z)
370-375 F6.3 pc DistBJ ?=- Distance for Bailer-Jones et al.,
2018, Cat. I/347 (dist_BJ)
377-394 F18.15 pc xBJ ?=- x distance for Bailer-Jones et al.,
2018, Cat. I/347 (x_BJ)
396-413 F18.15 pc yBJ ?=- y distance for Bailer-Jones et al.,
2018, Cat. I/347 (y_BJ)
415-432 F18.15 pc zBJ ?=- z distance for Bailer-Jones et al.,
2018, Cat. I/347 (z_BJ)
434-451 A18 --- CType Proposed type (CandidateType)
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Acknowledgements:
We gratefully acknowledge the use of data from the ESOPublic Survey
program ID 179.B-2002 taken with the VISTA telescope, and dataproducts
from the Cambridge Astronomical Survey Unit (CASU).
From Fabio R. Herpich, herpich(at)usp.br
References:
Bailer-Jones et al., 2018AJ....156...58B 2018AJ....156...58B, Cat. I/347
Ferreira Lopes et al., 2020MNRAS.496.1730F 2020MNRAS.496.1730F, VIVA-I
Gaia Collaboration, 2018A&A...616A...1G 2018A&A...616A...1G, Cat. I/345
(End) Fabio R. Herpich [Sao Paulo, Brazil], Patricia Vannier [CDS] 03-Feb-2021