J/A+A/702/A79 Near-IR photometry of CSPNe with VVVX (Minniti+, 2025)
Near-IR photometry of the central stars of planetary nebulae with the
VVVX survey.
Minniti D., Fragkou V., Alonso-Garcia J., Majaess D., Cortesi A.
<Astron. Astrophys. 702, A79 (2025)>
=2025A&A...702A..79M 2025A&A...702A..79M (SIMBAD/NED BibCode)
ADC_Keywords: Planetary nebulae ; Photometry, infrared
Keywords: surveys - binaries: general - stars: variables: general -
planetary nebulae: general - infrared: general - infrared: stars
Abstract:
Accurate photometric characterization of central stars of planetary
nebulae (CSPNe) toward the Galactic plane is significantly
hindered by the high levels of interstellar extinction in these
regions. However, near-infrared (near-IR) observations offer a more
effective alternative, as extinction is substantially reduced at these
wavelengths.
By mitigating the effects of interstellar extinction through near-IR
observations of the Galactic disk and bulge, we seek to improve the
identification and characterization of CSPNe in these regions,
enabling a deeper understanding of their properties and evolutionary
status.
We use the near-IR photometry of the VISTA Variables in the Via
Lactea (VVV) survey and its extension VVVX to define the near-IR
photometry of a large sample of CSPNe recently identified with Gaia
EDR3 data. We explore the optical and near-IR properties of all CSPNe
in our sample, and search for eclipsing binary candidates among them
by employing relevant catalogs.
We present a homogeneous catalog of 1274 CSPNe, including their Z, Y,
H, J, and K near-IR magnitudes and their errors, and our findings
concerning the photometric properties of our sample. We find 14 CSPNe
with a large IR excess indicating cool companions and/or surrounding
discs and 56 eclipsing binary candidates. Conclusions. Based on the
present VVVX CSPN catalog we conclude that near-IR photometry can be
proved valuable for CSPNe further and in-depth studies. Subsequent
studies should be concentrated in exploring the true nature of both
the CSPNe that present IR excess and the eclipsing binary CSPNe
candidates.
Description:
VVV+VVVX near-IR photometry of the CSPNe identified by
Gonzalez-Santamaria et al. (2021A&A...656A..51G 2021A&A...656A..51G,. Cat. J/A+A/656/A51).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 120 1274 VVV+VVVX near-IR photometry of the CSPNe
identified by Gonzalez-Santamaria et al.
(2021A&A...656A..51G 2021A&A...656A..51G,. Cat. J/A+A/656/A51)
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See also:
J/A+A/656/A51 : Planetary nebulae in Gaia EDR3 (Gonzalez-Santamaria+, 2021)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- PN Planetary Nebula identifier (PN GLLL.l+BB.b)
17- 24 F8.4 deg RAdeg Right Ascension (J2000)
26- 33 F8.4 deg DEdeg Declination (J2000)
35- 39 F5.2 mag Gmag ?=- Gaia G-band magnitude
41- 45 F5.2 mag BP-RP ?=- Gaia BP-RP color
47- 52 F6.3 mag Zmag ?=- Z-band magnitude
54- 58 F5.3 mag e_Zmag ?=- Error in Z_mag
60- 65 F6.3 mag Ymag ?=- Y-band magnitude
67- 71 F5.3 mag e_Ymag ?=- Error in Y_mag
73- 78 F6.3 mag Jmag ?=- J-band magnitude
80- 84 F5.3 mag e_Jmag ?=- Error in J_mag
86- 91 F6.3 mag Hmag ?=- H-band magnitude
93- 97 F5.3 mag e_Hmag ?=- Error in H_mag
99-104 F6.3 mag Ksmag ?=- Ks-band magnitude
106-110 F5.3 mag e_Ksmag ?=- Error in Ks_mag
112 A1 --- Group [ABC] Gonzalez-Santamaria et al.
(2021A&A...656A..51G 2021A&A...656A..51G,. Cat. J/A+A/656/A51)
group classification
114 A1 --- MType [ABEIRS-] Parker et al. (2016JPhCS.728c2008P 2016JPhCS.728c2008P)
morphological classification
116-120 A5 arcsec Dang ?=- PN major diameter
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Acknowledgements:
Valiliki Fragkou, vfragkou(at)ov.ufrj.br
(End) Patricia Vannier [CDS] 07-Aug-2025