PSS J0248+1802
PSS J0248+1802 | |
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![]() PSS J0248+1802 captured by DESI Legacy Surveys | |
Observation data (J2000.0 epoch) | |
Constellation | Aries |
Right ascension | 02h 48m 54.30s |
Declination | +18d 02m 50.0s |
Redshift | 4.422000 |
Heliocentric radial velocity | 1,325,682 km/s |
Distance | 11.939 Gly (light travel time distance) |
Apparent magnitude (V) | 0.392 |
Apparent magnitude (B) | 0.518 |
Surface brightness | 18.4 |
Characteristics | |
Type | RQQ (Radio-quiet) |
Notable features | Quasar containing metal absorption systems, luminous infrared galaxy |
Other designations | |
QSO J0248+1802, 2MASS J02485425+1802494, XQ-100 J0248+1802, PS-ELQS J024854.26+180249.3, PSO J042.2261+18.0470, WISE J024854.30+180250.0, 2XMM J024854.2+180249 |
PSS J0248+1802 known as QSO J0248+1802, is a quasar located in the constellation of Aries. With a redshift of 4.42, light from the object has taken at least 11.9 billion light-years to reach Earth.[1] It was first discovered, along with four other new quasars within the redshift ranges of 4.0 <~ z <~ 4.8, by astronomers conducting the Second Palomar Sky Survey in 1995.[2]
Characteristics
[edit]PSS J0248+1802 is one of the extremely luminous infrared galaxies found by Wide-field Infrared Survey Explorer (WISE). With an infrared luminosity of LIR ≡ L(rest 8-1000 μm) > 1014 L⊙, PSS J0248+1802 shows a strong detections at 12 and 22 μm, when conducted by the WISE survey. With its spectral energy distribution dominated by emission with a rest-frame of 4-10 μm, suggesting that hot interstellar dust with Td ~ 450 K is mainly contributed for the high luminosity in the quasar. Such properties indicated PSS J0248+1802 is likely powered by a highly obscured active galactic nucleus (AGN).[3] Furthermore, PSS J0248+1802 is one of the luminous quasars (M 1450 ≤ -26.5 m i ≤ 18.50) at z reg ≥ 2.8 by Pan-STARRS 1 Footprint (PS-ELQS),[4] with a mean X-ray power-law photon index of Γ=1.92+0.09-0.08 and a constrained neutral intrinsic absorbing material contain a mean column density of NH<~2×1021 cm−2.[5] As observed by researchers, it contains a Lyman continuum luminosity (L912) ranging from 1.06 × 1031 to 2.24 × 1032 erg s−1 Hz−1.[6]
References
[edit]- ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-06-24.
- ^ Kennefick, J. D.; de Carvalho, R. R.; Djorgovski, S. G.; Wilber, M. M.; Dickson, E. S.; Weir, N.; Fayyad, U.; Roden, J. (1995-07-01). "The Discovery of Five Quasars at z>4 Using the Second Palomar Sky Survey". The Astronomical Journal. 110: 78. Bibcode:1995AJ....110...78K. doi:10.1086/117498. ISSN 0004-6256.
- ^ Tsai, Chao-Wei; Eisenhardt, Peter R. M.; Wu, Jingwen; Stern, Daniel; Assef, Roberto J.; Blain, Andrew W.; Bridge, Carrie R.; Benford, Dominic J.; Cutri, Roc M.; Griffith, Roger L.; Jarrett, Thomas H.; Lonsdale, Carol J.; Masci, Frank J.; Moustakas, Leonidas A.; Petty, Sara M. (2015-06-01). "The Most Luminous Galaxies Discovered by WISE". The Astrophysical Journal. 805 (2): 90. arXiv:1410.1751. Bibcode:2015ApJ...805...90T. doi:10.1088/0004-637X/805/2/90. ISSN 0004-637X.
- ^ Schindler, Jan-Torge; Fan, Xiaohui; Huang, Yun-Hsin; Yue, Minghao; Yang, Jinyi; Hall, Patrick B.; Wenzl, Lukas; Hughes, Allison; Litke, Katrina C.; Rees, Jon M. (2019-07-01). "The Extremely Luminous Quasar Survey in the Pan-STARRS 1 Footprint (PS-ELQS)". The Astrophysical Journal Supplement Series. 243 (1): 5. arXiv:1905.04069. Bibcode:2019ApJS..243....5S. doi:10.3847/1538-4365/ab20d0. ISSN 0067-0049.
- ^ Just, D. W.; Brandt, W. N.; Shemmer, O.; Steffen, A. T.; Schneider, D. P.; Chartas, G.; Garmire, G. P. (2007-08-01). "The X-Ray Properties of the Most Luminous Quasars from the Sloan Digital Sky Survey". The Astrophysical Journal. 665 (2): 1004–1022. arXiv:0705.3059. Bibcode:2007ApJ...665.1004J. doi:10.1086/519990. ISSN 0004-637X.
- ^ Jalan, Priyanka; Chand, Hum; Srianand, Raghunathan (2021-07-01). "Constraining the ratio of median pixel optical depth profile around z 4 quasars using the longitudinal proximity effect". Monthly Notices of the Royal Astronomical Society. 505 (1): 689–701. arXiv:2105.01930. Bibcode:2021MNRAS.505..689J. doi:10.1093/mnras/stab1303. ISSN 0035-8711.
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