J/A+A/698/A109 Gaia catalogue of Galactic AGBs I. OH/IR (Lopez Marti, 2025)
The Gaia Catalogue of Galactic AGB Stars. I. OH/IR stars.
Lopez Marti B., Jimenez-Esteban F.M., Engels D., Garcia-Lario P.
<Astron. Astrophys. 698, A109 (2025)>
=2025A&A...698A.109L 2025A&A...698A.109L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant ; Stars, variable ; Infrared sources ;
Photometry ; Optical
Keywords: catalogs - virtual observatory tools - stars: AGB and post-AGB -
stars: evolution - stars: variable: general
Abstract:
The Gaia mission discovered several hundred thousand long-period
variables and measured parallaxes for many of them. These stars will
allow to study populations of variable stars in the Milky Way, among
others Asymptotic Giant Branch stars.
This paper describes the identification of Gaia counterparts of a
sample of oxygen-rich AGB stars with OH maser emission, as a first
step towards the compilation of a general Gaia Catalogue of Galactic
AGB Stars. With such a catalogue, tests of evolutionary models for the
AGB star population in the solar neighbourhood become feasible.
We cross-matched AGB star candidates showing OH maser emission with
the Gaia DR3 release, using a cross-match with AllWISE and 2MASS as
intermediate steps to avoid ambiguities. With the help of the Virtual
Observatory, we retrieved photometric data from the near-ultraviolet
to the far-infrared and built spectral energy distributions (SED) of
the sources. The SEDs were fitted with theoretical models. The fit
results, together with information from the literature, allowed us to
clean the sample from non-AGB stars. For the AGB stars, bolometric
fluxes were obtained. Distances based on Gaia parallaxes were used to
derive stellar luminosities.
We identified unique Gaia counterparts for 1487 OH masers. Of them,
1172 had an unambiguous classification as AGB stars, making up the
Gaia OH/IR star sample. Parallaxes with relative errors <20% and
astrometric excess noise <1.5mas were available for 222 OH/IR stars.
The study of the AGB population in the solar neighbourhood is limited
by the obscuration due to circumstellar dust, as Gaia DR3 provides
parallaxes only for a minority of our candidates. The location of the
OH/IR stars matches that of LPV discovered by Gaia in the (BP-RP;
Gabs) diagram, but the OH/IR star sample is biased toward redder
colours (BP-RP>4mag) and larger amplitudes (>1mag in the G-band),
which are typical for periodic large-amplitude Mira variables.
Description:
This is a catalogue of 1172 OH/IR sources detected by Gaia DR3, built
from a compilation of sources with detected OH maser emission, and
published in A&A. We fitted their SEDs with theoretical models. The
fit results, together with information from the literature, allowed us
to clean the sample from non-AGB stars. For the OH/IR stars,
bolometric fluxes were obtained. Distances based on Gaia parallaxes
were used to derive stellar luminosities. Two tables are available:
one listing the 1172 sources unambiguous classified as OH/IR stars,
including the derived physical parameters; and a second table listing
the 315 discarded non-AGB stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 230 1172 OH/IR sample
table3.dat 159 315 Excluded sample
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See also:
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 F15.11 deg RAdeg Gaia-DR3 right ascension (ICRS) at Ep=2016
17- 31 F15.11 deg DEdeg Gaia-DR3 declination (ICRS) at Ep=2016
33- 51 I19 --- GaiaDR3 Gaia-DR3 unique source designation
53- 80 A28 --- SIMBAD SIMBAD source identifier
82-100 A19 --- WISE WISE source identifier
102-117 A16 --- 2MASS 2MASS source identifier
119-128 F10.7 mag Gmag ?=- Gaia-DR3 G-band mean magnitude
130-139 F10.7 mag BPmag ?=- Gaia-DR3 integrated BP mean magnitude
141-150 F10.7 mag RPmag ?=- Gaia-DR3 integrated RP mean magnitude
152-173 E22.21 mas plx ?=- Gaia-DR3 Parallax
175-185 F11.9 mas e_plx ?=- Gaia-DR3 standard error of parallax
187-196 F10.5 pc Dist ?=- Geometric distance estimated by
Bailer-Jones et al. (2021AJ....161..147B 2021AJ....161..147B,
Cat. I/352) for those objects with good
parallax
198-204 F7.5 mag AV ?=- Interstellar extinction estimated by
Lallement et al. (2022A&A...661A.147L 2022A&A...661A.147L,
Cat. J/A+A/661/A147) for those objects with
good parallax
206-218 A13 mW/m2 Fbol Bolometric flux obtained from the SED fitting
220-230 F11.5 Lsun Lum ?=- Stellar luminosity obtained from the
bolometric flux and the distance for those
objects with good parallax
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 F15.11 deg RAdeg Gaia-DR3 right ascension (ICRS) at Ep=2016
17- 31 F15.11 deg DEdeg Gaia-DR3 declination (ICRS) at Ep=2016
33- 51 I19 --- GaiaDR3 Gaia-DR3 unique source designation
53- 80 A28 --- SIMBAD SIMBAD source identifier
82-100 A19 --- WISE WISE source identifier
102-117 A16 --- 2MASS 2MASS source identifier
119-120 A2 --- SEDType SED type (1)
122-123 A2 --- Fit [GB NF] Good ("G"), bad ("B") or not enough
photometric data points for the fitting
("NF") fit, as assessed by eye
125-143 A19 --- SIMBADClass Main SIMBAD classification
145-159 A15 --- Rejection Reason for rejection
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Note (1): SED type as follows:
SP = single-peaked
DP = double-peaked
F = flat
P = peculiar
By default all SEDs are considered single-peaked,
until visual inspection shows otherwise
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Acknowledgements:
Francisco Jimez-Esteban, fran.jimenez-esteban(at)cab.inta-csic.es
(End) Patricia Vannier [CDS] 07-Apr-2025