The nature of the symbiotic candidate 2MASS J07363415+6538548 in the field of NGC 2403
arXiv:2009.14784 · doi:10.1093/mnras/staa3063
Abstract
New Online Database of Symbiotic Variables includes several poorly characterised objects and candidate symbiotic stars, not only in the Milky Way but also in other galaxies. The goal of the research presented in this paper was to reveal the nature of 2MASS J07363415+6538548, the object discovered as an X-ray source in the field of NGC 2403, and tentatively classified as a symbiotic candidate or a cataclysmic variable. By analysis of available photometric data from ground-based surveys, together with high precision photometry from TESS, remarkable astrometric measurements of the Gaia satellite, and observations of other surveys spanning from X-rays to infrared, we have found that the object is not a symbiotic star nor a cataclysmic variable but rather an active K-type dwarf. The star is located in the distance of 415 pc, has an effective temperature of 4 275 K, luminosity of 0.14 L, a mass of 0.7 M, and radius of 0.7 R. It has a rotational period ~ 3 days and is a strong X-ray source with the X-ray luminosity of ~ erg/s. Gyrochronology and isochrone fitting confirmed that the star is young.
accepted for publication in MNRAS; 8 pages, 8 figures, 2 tables
References in corpus (21)
- The Transiting Exoplanet Survey Satellite
- HI4PI: A full-sky HI survey based on EBHIS and GASS
- The Zwicky Transient Facility: Data Processing, Products, and Archive
- The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
- New Grids of ATLAS9 Model Atmospheres
- Gaia Data Release 1: Catalogue validation
- A census of symbiotic stars in the 2MASS, WISE and Gaia surveys
- Relation of X-ray activity and rotation in M dwarfs and predicted time-evolution of the X-ray luminosity
- A new, clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies
- A machine learning approach for identification and classification of symbiotic stars using 2MASS and WISE
- X-Ray-Emitting Stars Identified from the ROSAT All-Sky Survey and the Sloan Digital Sky Survey
- Common dynamo scaling in slowly rotating young and evolved stars
- First detection and characterization of symbiotic stars in M31
- Bright end of the luminosity function of high-mass X-ray binaries: contributions of hard, soft and supersoft sources
- Distinguishing between symbiotic stars and planetary nebulae
- High-cadence spectroscopy of M-dwarfs - II. Searching for stellar pulsations with HARPS
- A Survey of the Local Group of Galaxies for Symbiotic Binary Stars. I. First detection of symbiotic stars in M33
- Discovery of true, likely and possible symbiotic stars in the dwarf spheroidal NGC 205
- Statistical relations between stellar spectral and luminosity classes and stellar effective temperature and surface gravity
- Discovery in IC10 of the farthest known symbiotic star
- LAMOST J202629.80+423652.0 is not a symbiotic star
Cited by in corpus (7)
- Symbiotic stars in the era of modern ground- and space-based surveys
- Spectroscopic and photometric analysis of symbiotic candidates -- I. Ten candidates on classical symbiotic stars
- Kepler meets Gaia DR3: homogeneous extinction-corrected color-magnitude diagram and binary classification
- DeGaPe 35: Amateur discovery of a new southern symbiotic star
- V618 Sgr: Galactic eclipsing symbiotic nova detected in repeated outbursts
- The Enigma of Gaia18cjb: a Rare Hybrid of FUor and EXor?
- Comprehensive analysis of a symbiotic candidate V503 Her