Wikipedia

IRAS 01003-2238

IRAS 01003-2238 also known as IRAS F01004-2237 or simply F01004-2237, is a galaxy located in the constellation of Cetus. It is located 1.65 billion light years away from Earth and is a Seyfert galaxy and an ultraluminous infrared galaxy.[1] IRAS 01003-2238 is also classified as a Wolf-Rayet galaxy, making the object one of the most distant known.[2][3]

IRAS 01003-2238
IRAS 01003-2238 captured with DESI Legacy Surveys
Observation data (J2000.0 epoch)
ConstellationCetus
Right ascension01h 02m 49.99s
Declination−22° 21′ 57.25″
Redshift0.117968
Heliocentric radial velocity35,366 km/s
Distance1.657 Gly (508.03 Mpc)
Apparent magnitude (B)18.62
Absolute magnitude (V)18.9
Characteristics
TypeHII;Sbrst; Sy 2, ULIRG
Notable featuresLuminous infrared galaxy, Wolf-Rayet galaxy
Other designations
IRAS F01004-2237, LEDA 3095492, NVSS J010249, 222156, F01004-2237

Characteristics

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IRAS 01003-2238 is the brightest galaxy of a small group.[4] It has two companions located 14.5 arcsec east and 18.5 arcsec southeast respectively.[5] It has an infrared luminosity of 1012.2 Lʘ,[6] and a far-infrared luminosity of 1.9 x 1012 Lʘ.[7] The black hole mass in IRAS 01003-2238 is estimated to be 2.5 x 107 Mʘ.[8]

IRAS 01003-2228 has a star formation rate of > 100 Mʘ yr-1.[8] There are also numerous massive young Wolf-Rayet stars in its nucleus.[9][8] In addition, the galaxy displays a broad emission band with a rest wavelength of λ ≈ 4660 Á. This is interpreted as arising from a combined effect of around 105 Wolf-Rayet stars of a WN subtype.[10]

Additionally, IRAS 01003-2238 is also an old galaxy merger showing modest distortions but absence of tidal tails when shown at optical wavelengths.[6] Although no traces of radio excess are seen, it is categorized as a Seyfert 2 galaxy according to optical observations.[6] It shows signs of a hidden active galactic nucleus.[11][12] The radio emission in IRAS 01003-2238 is found similar to radio galaxies with a high intrinsic brightness temperature of T'b ~ 108.1 K.[6]

An optical flare is observed in IRAS 01003-228,[7][8] with a luminous one recorded in June 2010.[8] Since both helium emission lines are detected in the galaxy following the optical flare, the most likely explanation is a candidate tidal disruption event, where a star wandering close to the black hole is ripped apart by tidal forces.[13] Since then, IRAS 01003-2238 has since gone through another recurring flaring period in September 2021. This time, the flare is ultraviolet bright yet weak in X-rays.[14]

References

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  1. ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-10-14.
  2. ^ Singh, M.; Sanwal, B.B.; Stalin, C.S. (2001). "Surface photometry of three Wolf-Rayet galaxies". Bulletin of the Astronomical Society of India. 29: 447–448. Bibcode:2001BASI...29..447S.
  3. ^ Schaerer, D.; Contini, T.; Pindao, M. (April 1999). "New catalogue of Wolf-Rayet galaxies and high-excitation extra-galactic Hii regions" (PDF). Astronomy and Astrophysics Supplement Series. 136 (1): 35–52. arXiv:astro-ph/9812347. Bibcode:1999A&AS..136...35S. doi:10.1051/aas:1999197. ISSN 0365-0138.
  4. ^ Wilman, R. J.; Crawford, C. S.; Abraham, R. G. (1999-10-21). "Mapping the gas kinematics and ionization structure of four ultraluminous IRAS galaxies". Monthly Notices of the Royal Astronomical Society. 309 (2): 299–324. arXiv:astro-ph/9908233. Bibcode:1999MNRAS.309..299W. doi:10.1046/j.1365-8711.1999.02807.x. ISSN 0035-8711.
  5. ^ Clements, D. L.; Sutherland, W. J.; McMahon, R. G.; Saunders, W. (1996-03-11). "Optical imaging of ultraluminous IRAS galaxies: how many are mergers?". Monthly Notices of the Royal Astronomical Society. 279 (2): 477–497. Bibcode:1996MNRAS.279..477C. doi:10.1093/mnras/279.2.477. ISSN 0035-8711.
  6. ^ a b c d Hayashi, Takayuki J.; Hagiwara, Yoshiaki; Imanishi, Masatoshi (2024-07-01). "Very Long Baseline Interferometry Detection of an Active Radio Source Potentially Driving 100 kpc Scale Emission in the Ultraluminous Infrared Galaxy IRAS F01004–2237". The Astrophysical Journal. 970 (1): 5. arXiv:2401.08009. Bibcode:2024ApJ...970....5H. doi:10.3847/1538-4357/ad5012. ISSN 0004-637X.
  7. ^ a b Tadhunter, C; Patel, M; Mullaney, J (2021-04-22). "A light echo from the warm outflow in the ULIRG F01004-2237 following a major flare in its optical continuum emission". Monthly Notices of the Royal Astronomical Society. 504 (3): 4377–4388. arXiv:2104.08317. doi:10.1093/mnras/stab1105. ISSN 0035-8711.
  8. ^ a b c d e Dou, Liming; Wang, Tinggui; Yan, Lin; Jiang, Ning; Yang, Chenwei; Cutri, Roc M.; Mainzer, Amy; Peng, Bo (2017-05-17). "Discovery of a Mid-infrared Echo from the TDE Candidate in the Nucleus of ULIRG F01004−2237". The Astrophysical Journal Letters. 841 (1): L8. arXiv:1703.05773. Bibcode:2017ApJ...841L...8D. doi:10.3847/2041-8213/aa7130. ISSN 2041-8205.
  9. ^ Surace, Jason A.; Sanders, D. B.; Vacca, William D.; Veilleux, Sylvain; Mazzarella, J. M. (January 1998). "HST/WFPC2 Observations of Warm Ultraluminous Infrared Galaxies". The Astrophysical Journal. 492 (1): 116–136. Bibcode:1998ApJ...492..116S. doi:10.1086/305028. ISSN 0004-637X.
  10. ^ Armus, L.; Heckman, T. M.; Miley, G. K. (March 1988). "The direction of Wolf-Rayet stars in a very powerful far-infrared galaxy - Direct evidence for a starburst". The Astrophysical Journal. 326: L45. Bibcode:1988ApJ...326L..45A. doi:10.1086/185120. ISSN 0004-637X.
  11. ^ Hayashi, Takayuki J; Hagiwara, Yoshiaki; Imanishi, Masatoshi (2021-05-01). "Radio properties of 10 nearby ultraluminous infrared galaxies with signatures of luminous buried active galactic nuclei". Monthly Notices of the Royal Astronomical Society. 504 (2): 2675–2686. arXiv:2101.12058. doi:10.1093/mnras/stab1084. ISSN 0035-8711.
  12. ^ Rodríguez Zaurín, J.; Tadhunter, C. N.; González Delgado, R. M. (2009-12-11). "The properties of the stellar populations in ULIRGs – I. Sample, data and spectral synthesis modelling". Monthly Notices of the Royal Astronomical Society. 400 (3): 1139–1180. arXiv:0908.0269. Bibcode:2009MNRAS.400.1139R. doi:10.1111/j.1365-2966.2009.15444.x. ISSN 0035-8711.
  13. ^ Tadhunter, C.; Spence, R.; Rose, M.; Mullaney, J.; Crowther, P. (2017-03-01). "A tidal disruption event in the nearby ultra-luminous infrared galaxy F01004-2237". Nature Astronomy. 1 (3): 0061. arXiv:1702.02573. Bibcode:2017NatAs...1E..61T. doi:10.1038/s41550-017-0061. ISSN 2397-3366.
  14. ^ Jiang, Ning; Cenko, Stephen Bradley; Sun, Luming; Dong, Subo; Dou, Liming; Liu, Zhu (2022-05-01). "Exploring the Nature of the Recurring Flare in ULIRG F01004-2237 with UV spectroscopic Diagnosis". HST Proposal: 16943. Bibcode:2022hst..prop16943J.
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