J/A+A/707/A268 Gaia white dwarfs with infrared excess (Murillo-Ojeda+, 2026)
Gaia white dwarfs with infrared excess. I. The 100 pc catalogue.
Murillo-Ojeda R., Jimenez-Esteban F.M., Rebassa-Mansergas A., Torres S.
<Astron. Astrophys. 707, A268 (2026)>
=2026A&A...707A.268M 2026A&A...707A.268M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, white dwarf ; Stars, nearby ; Photometry ; Optical ;
Effective temperatures
Keywords: catalogs - virtual observatory tools - circumstellar matter -
stars: evolution - white dwarfs
Abstract:
The presence of infrared (IR) excess flux observed in white dwarfs is
related to the existence of debris disks or substellar companions.
These systems provide important clues in the study of extrasolar
planetary material and binary evolution. However, fully characterising
their properties requires as statistically significant, complete sample.
This work aims to identify a complete sample of white dwarfs with
infrared excess emission within 100pc of the Sun.
We built the spectral energy distributions (SEDs) of the white dwarfs
using synthetic photometry in 56 optical filters of the Javalambre
Physics of the Accelerating Universe Astronomical Survey system,
generated from Gaia Data Release 3 low-resolution spectra and
complemented with the latest infrared photometry available at the
Virtual Observatory (VO). VOSA was used to fit the SEDs with different
atmospheric white dwarf models depending on the source spectral type.
We visually checked optical and infrared images to identify
contaminated photometry. We built a catalogue of 456 infrared excess
white dwarfs, of which 292 are robust identifications, and 164 are
candidates. 351 (75%) are new identifications. This implies a fraction
of infrared excess white dwarfs between 5.9±0.3% and 9.2±0.4%,
higher than previous works, but in agreement with some more recent
estimates. Furthermore, for the sample of infrared excess white
dwarfs, the fraction of sources with non-hydrogen atmosphere increases
with the Gaia GBP-GRP colour, contrary to the general white dwarf
population.
However, this result should be interpreted with caution. Additionally,
a thorough comparison of our catalogue with those of previous studies
was performed.
The sample of white dwarfs with infrared excess emission within 100pc
presented in this work is the largest, most complete and reliable to
date. Due to their proximity, they are ideal targets for follow-up
studies aimed at characterising circumstellar disks, substellar
companions, and the composition of accreted planetary material.
Description:
Catalogue of white dwarfs with infrared excess within 100pc. SEDs) of
the white dwarfs using the synthetic J-PAS photometry generated with
GaiaXPy from Gaia DR3 low-resolution spectra. We complemented these
with the latest infrared photometry available at the Virtual
Observatory (VO) from surveys as 2MASS, VISTA, UKIDSS, WISE and
Spitzer. We used a search radius of 3 arcsec around the translated
Gaia coordinates at the epoch of each survey.
We used VOSA to fit the SEDs and identified the infrared excesses. We
checked optical and infrared images to identify contaminated
photometry with Aladin. We obtained a final sample of 456 white dwarfs
with infrared excess. Of them, 292 showed reliable infrared excess
(157 DAs and 135 non-DAs) and 164 showed tentative infrared excess
detection (117 DAs and 47 non-DAs). The ratio of white dwarfs with
infrared excess is 9.2±0.4%, or 5.9±0.3% if we only consider the
reliable excess sample. We compared our final sample with the
literature. We found that 77% (351) were new identifications.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
wdw7.dat 526 456 Catalogue of white dwarfs with infrared excess
within 100pc (table A1)
refs.dat 52 39 References
graphic/* . 456 Individual images of SED
phot/* . 456 Individual SED tables
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See also:
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
J/MNRAS/518/5106 : Classification of the 100pc WDs (Jimenez-Esteban+, 2023)
Byte-by-byte Description of file: wdw7.dat
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Bytes Format Units Label Explanations
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1- 11 F11.7 deg RAdeg Gaia DR3 right ascension (ICRS) at Ep=2016.0
13- 25 F13.9 deg DEdeg Gaia DR3 declination (ICRS) at Ep=2016.0
27- 45 I19 --- GaiaDR3 Gaia DR3 source identifier
47- 53 F7.4 mas plx Gaia DR3 parallax
55- 63 F9.6 pc Distance Distance calculated inverting Gaia parallax
65- 74 F10.7 mag GMAG Gaia absolute G-band mean magnitude
76- 84 F9.6 mag Gmag Gaia G-band magnitude
86- 94 F9.6 mag GBPmag Gaia G_BP magnitude
96-104 F9.6 mag GRPmag Gaia G_RP magnitude
106-114 A9 --- ExcessType Type of the excess: reliable or tentative
116-131 A16 --- ExcessBeg Band where excess begins
133-143 F11.9 --- PDAJE23 Probability of being DA (>0.5) or
non-DA(<0.5)
145-154 F10.4 K TeffJE23 ?=- Effective temperature from
Jimenez-Esteban et al., 2023MNRAS.518.5106J 2023MNRAS.518.5106J,
Cat. J/MNRAS/518/5106
156-161 F6.4 [cm/s2] loggJE23 ?=- Surface gravity from
Jimenez-Esteban et al., 2023MNRAS.518.5106J 2023MNRAS.518.5106J,
Cat. J/MNRAS/518/5106
163-168 F6.4 Msun MJE23 ?=- Mass from Jimenez-Esteban et al..
2023MNRAS.518.5106J 2023MNRAS.518.5106J. Cat. J/MNRAS/518/5106
170-185 A16 --- 2MASSId 2MASS source identifier
187-194 A8 --- UKIDSSCat UKIDSS catalogue
196-207 A12 --- UKIDSSId UKIDSS source identifier
209-218 A10 --- VISTACat VISTA catalogue
220-231 A12 --- VISTAId VISTA source identifier
233-251 A19 --- WISEId WISE source identifier
253-259 A7 --- SpitzerCat Spitzer catalogue
261-286 A26 --- SpitzerId Spitzer source identifier
288-526 A239 --- Refs References, in refs.dat file
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 32 A32 --- Ref Reference code
34- 52 A19 --- BibCode BibCode
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Acknowledgements:
Raquel Murillo-Ojeda, rmurillo(at)cab.inta-csic.es
(End) Raquel Murillo-Ojeda [CAB], Patricia Vannier [CDS] 10-Feb-2026