New Transient ULX Candidate in NGC 4254: Evidence of Circumbinary Disk?
arXiv:2310.09421 · doi:10.1093/mnras/stad3175
Abstract
This paper presents the identification of a new transient ULX candidate (ULX-3) with reaching a peak luminosity of ~ 4e39 erg/s in NGC 4254 by using archival Chandra, Swift X-Ray Telescope (Swift/XRT), Hubble Space Telescope (HST), and James Webb Space Telescope (JWST) observations. From precise astrometric calculations, unique optical, near-infrared (NIR) and mid-infrared (mid-IR) counterparts were found. The spectral energy distribution (SED) and color-magnitude diagrams (CMDs) of counterparts of the new ULX candidate were plotted to constrain the nature of the possible donor star. Evidence of a circumbinary disk was found from its SED with two blackbody temperatures of 1000 and 200 K. Moreover, according to the X-ray hardness ratios, ULX-3 exhibits very hard to very soft transitions as seen in some high-mass X-ray binaries (HMXBs) with Be-star donors Moreover, ULX-3 varies by more than two orders of magnitude in the 0.3-10 keV energy band as seen in typical transient ULXs.
ACCEPTED for publication in MNRAS
References in corpus (31)
- Modelling the behaviour of accretion flows in X-ray binaries
- An Ultraluminous X-ray Source Powered by An Accreting Neutron Star
- A mass of less than 15 solar masses for the black hole in an ultraluminous X-ray source
- Spitzer SAGE Infrared Photometry of Massive Stars in the Large Magellanic Cloud
- The discovery of weak coherent pulsations in the ultraluminous X-ray source NGC 1313 X-2
- Ultraluminous X-ray sources
- Multi-wavelength observations of Galactic hard X-ray sources discovered by INTEGRAL. II. The environment of the companion star
- The Period-Luminosity Relation of Red Supergiant Stars in the Small Magellanic Cloud
- Red Supergiant Stars in the Large Magellanic Cloud: I. The Period-Luminosity Relation
- Near-infrared counterparts of ultraluminous X-ray sources
- Red Supergiants in M31 and M33 I. The Complete Sample
- New mass-loss rates of B supergiants from global wind models
- On the X-ray and optical properties of the Be star HD 110432: a very hard-thermal X-ray emitter
- Two eclipsing ultraluminous X-ray sources in M 51
- New Photometric Calibration of the Wide Field Camera 3 Detectors
- Uncovering Red and Dusty Ultraluminous X-ray Sources with Spitzer
- NIR Counterparts to ULXs (III): Completing the photometric survey and selected spectroscopic results
- A Chandra Virgo cluster survey of spiral galaxies. I. Introduction to the survey and a new ULX sample
- Linking soft excess in ultraluminous X-ray sources with optically thick wind driven by supercritical accretion
- A New Transient Ultraluminous X-ray Source in NGC 7090
- A new sample of transient ultraluminous X-ray sources serendipitously discovered by Swift/XRT
- The Transient Ultra-luminous X-ray Source, ULX-4, in M51
- Spectral state transitions in Circinus ULX5
- Detection of 125.5-day Optical Periodic Modulation of the Neutron Star M51 ULX-8
- Spitzer IRAC observations of IR excess in Holmberg IX X-1: A circumbinary disk or a variable jet?
- Optical Counterparts of ULXs in NGC 1672
- Accretion and jets in a low luminosity AGN: the nucleus of NGC 1052
- X-ray properties of two transient ULX candidates in galaxy NGC 7090
- Bubble in the Whale: Identifying the Optical Counterparts and Extended Nebula for the Ultraluminous X-ray Sources in NGC 4631
- Optical Counterparts of ULXs in Two Dwarf Galaxies: NGC 4861 and NGC 4449
- A Temporal Scale to Track the Spectral Transitions in Low-Mass X-ray Binaries