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QSO B0153+744
The quasar QSO B0153+744.
Observation data (J2000.0 epoch)
Constellation	Cassiopeia
Right ascension	01 57 34.964
Declination	+74° 42′ 43.230″
Redshift	2.338000
Heliocentric radial velocity	700,915 km/s
Distance	10.512 Gly
Apparent magnitude (V)	16.0
Apparent magnitude (B)	16.0
Characteristics
Type	LPQ, RLQ
Other designations
S5 0153+74, NVSS J015735+744241, QSO J0157+1442, RORF 0153+744, 1RXS J015735.2+744246, 0153+744

QSO B0153+744 is a quasar located in the constellation of Cassiopeia. It has a redshift of (z) 2.338 and has an optical brightness of m_R = 17.5 magnitude. It was first discovered as an astronomical radio source in 1988. The radio spectrum of the source appears as flat when seen at centimeter wavelengths but optically thin at millimeter wavelengths. This object is also classified as radio-loud and exhibits low polarization, making it a low polarized quasar (LPQ).

Description

The radio source of QSO B0153+744 is found to be both one-sided and complex. However, when shown at both frequencies, it is revealed as double source that is embedded inside a halo. In its radio structure, the 15.4 GHz emission is found to be dominated by two main components with a separation gap of 10 milliarcseconds. These two main components are classified as the northern component and southern component respectively. The northern component contains an inverted spectrum whereas the southern component has a steep spectra.

In 1997, these two components of QSO B0153+744 were studied further. This in turn, were confirmed as a jet-core component and a bright secondary component. The former shows core-jet structure made up of four distinctive components, when resolved at 1.3 centimeter (cm) wavelengths whereas the latter is stationary and exhibits a complicated structure. Further evidence shows the spectral index of the bright component's emission is near to one of the steep-spectrum jet components at ranges between 6 cm and 3.6 cm.

A strong one-sided jet is present in QSO B0153+744 with its projected direction changing by an 180° angle. There are three other sub-components present (the jet's innermost regions). The two sub-components are shown trailing the jet's direction with a switch of 65° ± 3° at distance r = (0.65 ± 0.05) mas to 88° ± 8° at distance r = (1.35 ± 0.05) mas, while the third sub-component is trailing the jet's outermost regions. Based on the jet's speed and its change of direction, this indicates the radio source of QSO B0153+744 is relatively young.

References

1. ^ Hummel, C. A.; Schalinski, C. J.; Krichbaum, T. P.; Witzel, A.; Johnston, K. J. (1988-10-01). "The quasar 0153+74". Astronomy and Astrophysics. 204: 68–72. Bibcode:1988A&A...204...68H. ISSN 0004-6361.
2. ^ Hummel, C. A.; Krichbaum, T. P.; Witzel, A.; Wuellner, K. H.; Steffen, W.; Alef, W.; Fey, A. (1997-08-01). "The radio jet of quasar 0153+744". Astronomy and Astrophysics. 324: 857–869. Bibcode:1997A&A...324..857H. ISSN 0004-6361.
3. Stickel, M.; Kuehr, H. (1996). "Optical identifications of radio sources from the 1Jy, S4 and S5 catalogues". Astronomy & Astrophysics Supplement Series. 115: 11–40. Bibcode:1996A&AS..115...11S.
4. Minev, Milen; Trifonov, Trifon; Ivanov, Valentin D; Ovcharov, Evgeni; Bozhilov, Vladimir; Valcheva, Antoniya; Kostov, Andon; Nedialkov, Petko (2024-06-14). "Results of a long-term optical variability study of 11 quasars and VRI photometry of comparison stars". Monthly Notices of the Royal Astronomical Society. 531 (4): 4746–4761. doi:10.1093/mnras/stae1479. ISSN 0035-8711.
5. ^ Pérez-Torres, M. A.; Marcaide, J. M.; Guirado, J. C.; Ros, E. (December 2004). "Absolute kinematics of radio source components in the complete S5 polar cap sample - II. First and second epoch maps at 15 GHz" (PDF). Astronomy & Astrophysics. 428 (3): 847–866. arXiv:astro-ph/0408581. Bibcode:2004A&A...428..847P. doi:10.1051/0004-6361:20040423. ISSN 0004-6361.
6. Britzen, S.; Vermeulen, R. C.; Taylor, G. B.; Campbell, R. M.; Pearson, T. J.; Readhead, A. C. S.; Xu, W.; Browne, I. W. A.; Henstock, D. R.; Wilkinson, P. (2007-05-10). "A multi-epoch VLBI survey of the kinematics of CJF sources" (PDF). Astronomy & Astrophysics. 472 (3): 763–771. doi:10.1051/0004-6361:20052677. ISSN 0004-6361.
7. ^ Pearson, T. J.; Readhead, A. C. S. (May 1988). "The milliarcsecond structure of a complete sample of radio sources. II - First-epoch maps at 5 GHz". The Astrophysical Journal. 328: 114. Bibcode:1988ApJ...328..114P. doi:10.1086/166274. ISSN 0004-637X.
8. Ros, E.; Marcaide, J. M.; Guirado, J. C.; Pérez-Torres, M. A. (September 2001). "Absolute kinematics of radio source components in the complete S5 polar cap sample" (PDF). Astronomy & Astrophysics. 376 (3): 1090–1105. doi:10.1051/0004-6361:20010987. ISSN 0004-6361.
9. Torniainen, I.; Tornikoski, M.; Teräsranta, H.; Aller, M. F.; Aller, H. D. (2005-05-13). "Long term variability of gigahertz-peaked spectrum sources and candidates" (PDF). Astronomy & Astrophysics. 435 (3): 839–856. Bibcode:2005A&A...435..839T. doi:10.1051/0004-6361:20041886. ISSN 0004-6361.

External links

• QSO B0153+744 on SIMBAD
• QSO B0153+744 on NASA/IPAC Database

v t e Constellation of Cassiopeia
List of stars in Cassiopeia Cassiopeia in Chinese astronomy
Stars	Bayer α (Schedar) β (Caph) γ (Navi/Tsih) δ (Ruchbah) ε (Segin) ζ (Fulu) η (Achird) θ (Marfak) ι κ λ μ ν ξ ο π ρ σ τ υ υ (Castula) φ χ ψ ω Flamsteed 1 2 4 6 9 10 12 42 47 48 (A) 49 50 54 Variable R S TZ WZ YZ (21) AO AR PZ V373 V509 V547 V669 V705 V762 V863 V773 V987 V1022 V1405 HR 5 91 144 196 244 273 297 743 932 8832 8853 8881 HD 861 7924 7977 15558 17156 (Nushagak) 240210 240237 240429 240430 Other BD+60°2522 Gliese 49 IRAS 23304+6147 LS I +61 303 PSR J0205+6449 Tycho G 4U 0142+61 WR 2 WR 3
Exoplanets HD 7924 b HD 17156 b HD 219134 b c d e (h) f g HD 240210 b HD 240237 b
Star clusters Messier 52 Messier 103 NGC 103 NGC 110 NGC 129 NGC 133 NGC 136 NGC 146 NGC 189 NGC 225 NGC 358 NGC 366 NGC 381 NGC 433 NGC 436 NGC 457 NGC 559 NGC 637 NGC 654 NGC 659 NGC 663 NGC 1027 NGC 7789 NGC 7790 Trumpler 3
Nebulae	NGC 281 7635 Other 3C 58 Cassiopeia A Heart Nebula IC 289 IC 1805 KjPn 8 LBN 114.55+00.22 Sh 2-185 Westerhout 5
Galaxies	NGC 147 185 278 Other Andromeda VII 3C 20 3C 35 Dwingeloo 1 Dwingeloo 2 MB 3 IC 10 Maffei 1 Maffei 2 QSO B0153+744
Astronomical events SN 1181 SN 1572 (B)
Category

• Quasars
• Cassiopeia (constellation)
• Astronomical objects discovered in 1988
• Active galaxies