KIC 9272276: an extreme low mass ratio red nova progenitor

S. Wadhwa; M. Grozdanović; B. Arbutina; N. F. H. Tothill; M. D. Filipović; A. Y. De Horta

doi:10.2298/SAJ2511059W

KIC 9272276: an extreme low mass ratio red nova progenitor

S. Wadhwa, M. Grozdanović, B. Arbutina, N. F. H. Tothill, M. D. Filipović, A. Y. De Horta

School of Science

University of Belgrade

Research output: Contribution to journal › Article › peer-review

Abstract

Photometric analysis of KIC 9272276 (K9272), a low-mass contact binary system, is presented. We find it to be an example of extreme low mass ratio system that satisfies the current theoretical criteria for a potential red-nova progenitor. V -band photometry of the system was modelled using the Wilson-Devenney code and we find the system to be in marginal contact with a mass ratio of 0.081. The estimated mass of the primary component is one solar mass and the theoretical instability mass ratio range, accounting for both metallicity and age, is well above the modelled mass ratio at 0.09 - 0.101. We find no evidence of a potential third light contamination and discuss other findings confirming our analysis.

Original language	English
Pages (from-to)	59-64
Number of pages	6
Journal	Serbian Astronomical Journal
Issue number	211
DOIs	https://doi.org/10.2298/SAJ2511059W
Publication status	Published - Dec 2025

Keywords

Stars: binaries: eclipsing
Stars: low-mass
Techniques: photometric

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title = "KIC 9272276: an extreme low mass ratio red nova progenitor",

abstract = "Photometric analysis of KIC 9272276 (K9272), a low-mass contact binary system, is presented. We find it to be an example of extreme low mass ratio system that satisfies the current theoretical criteria for a potential red-nova progenitor. V -band photometry of the system was modelled using the Wilson-Devenney code and we find the system to be in marginal contact with a mass ratio of 0.081. The estimated mass of the primary component is one solar mass and the theoretical instability mass ratio range, accounting for both metallicity and age, is well above the modelled mass ratio at 0.09 - 0.101. We find no evidence of a potential third light contamination and discuss other findings confirming our analysis.",

keywords = "Stars: binaries: eclipsing, Stars: low-mass, Techniques: photometric",

author = "S. Wadhwa and M. Grozdanovi{\'c} and B. Arbutina and Tothill, {N. F. H.} and Filipovi{\'c}, {M. D.} and {De Horta}, {A. Y.}",

year = "2025",

month = dec,

doi = "10.2298/SAJ2511059W",

language = "English",

pages = "59--64",

journal = "Serbian Astronomical Journal",

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TY - JOUR

T1 - KIC 9272276

T2 - an extreme low mass ratio red nova progenitor

AU - Wadhwa, S.

AU - Grozdanović, M.

AU - Arbutina, B.

AU - Tothill, N. F. H.

AU - Filipović, M. D.

AU - De Horta, A. Y.

PY - 2025/12

Y1 - 2025/12

N2 - Photometric analysis of KIC 9272276 (K9272), a low-mass contact binary system, is presented. We find it to be an example of extreme low mass ratio system that satisfies the current theoretical criteria for a potential red-nova progenitor. V -band photometry of the system was modelled using the Wilson-Devenney code and we find the system to be in marginal contact with a mass ratio of 0.081. The estimated mass of the primary component is one solar mass and the theoretical instability mass ratio range, accounting for both metallicity and age, is well above the modelled mass ratio at 0.09 - 0.101. We find no evidence of a potential third light contamination and discuss other findings confirming our analysis.

AB - Photometric analysis of KIC 9272276 (K9272), a low-mass contact binary system, is presented. We find it to be an example of extreme low mass ratio system that satisfies the current theoretical criteria for a potential red-nova progenitor. V -band photometry of the system was modelled using the Wilson-Devenney code and we find the system to be in marginal contact with a mass ratio of 0.081. The estimated mass of the primary component is one solar mass and the theoretical instability mass ratio range, accounting for both metallicity and age, is well above the modelled mass ratio at 0.09 - 0.101. We find no evidence of a potential third light contamination and discuss other findings confirming our analysis.

KW - Stars: binaries: eclipsing

KW - Stars: low-mass

KW - Techniques: photometric

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DO - 10.2298/SAJ2511059W

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KIC 9272276: an extreme low mass ratio red nova progenitor

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Keywords

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