J120011.1+680924.8

J120011.1+680924.8
SDSS image of J120011.1+680924.8
Observation data (J2000.0 epoch)
ConstellationDraco
Right ascension12h 00m 11.10s[1]
Declination+68° 09′ 24.80″[1]
Redshift0.262741[1]
Heliocentric radial velocity78,768 ± 13 km/s[1]
Distance3,795.2 ± 265.7 Mly (1,163.61 ± 81.45 Mpc)[1]
Group or cluster[BVH2007] 136
magnitude (J)14.86[1]
Characteristics
TypeBrClG[1]
Size~681,000 ly (208.7 kpc) (estimated)[1]
Other designations
2MASX J12001112+6809250, [BHF2008] 13, LEDA 2713000, GMBCG J180.04632+68.15690 BCG, OGC 103, SDSS J120011.11+680924.8, WHL J120011.1+680925 BCG[1]

J120011.1+680924.8 also known as OGC 103 and SDSS J120011.11+680924.8, is a massive elliptical galaxy located in the constellation of Draco. The redshift of the galaxy is estimated to be (z) 0.262[1] and it is the brightest cluster galaxy of the galaxy cluster called [BVH2007] 136.[2]

Description

J120011.1+680924.8 is an elliptical galaxy with an R-band luminosity of 12.7 based on the luminosity estimation made by Sloan Digital Sky Survey (SDSS).[3] It is one of the most massive galaxies known, with an R-band absolute magnitude of -24.07 and an R-band size of 1.18 kiloparsecs.[4]

The galaxy is categorized as an intermediate early-type galaxy whose effective radius is approximately 4.69 parsecs based on a best Sersic fit technique. The dynamical mass of the galaxy is 12.22 M☉.[5] The stellar mass is 10.2 × 1011 M☉ with the galaxy itself being surrounded by a dark matter halo, with the dark matter component displaying a contribution of 6%. The total projected half-light radius is estimated to be 16.2 kiloparsecs based on a fit measurement to its de Vaucouleurs profile.[6]

The galaxy has a rounded appearance and is located in the center of the cluster, with its inner profile best described by a shallow core, and has a calculated velocity dispersion of 383 kilometers per seconds.[7] The de Vaucouleurs luminosity of the galaxy is estimated to be -24.47 magnitude, with a high ellipticity of 0.32. The bulge-to-total ratio is 0.72, while the bulge and disk radius is 10.35 and 13.44 kiloparsecs respectively based on an estimation of its de Vaucouleurs bulge plus an exponential disk model. Dust features are not present.[8]

References

  1. 1 2 3 4 5 6 7 8 9 10 "NED Search results for J120011.1+680924.8". NASA/IPAC Extragalactic Database. Retrieved 2026-05-26.
  2. ↑ Burenin, R. A.; Vikhlinin, A.; Hornstrup, A.; Ebeling, H.; Quintana, H.; Mescheryakov, A. (October 2007). "The 400 Square Degree ROSAT PSPC Galaxy Cluster Survey: Catalog and Statistical Calibration". The Astrophysical Journal Supplement Series. 172 (2): 561–582. arXiv:astro-ph/0610739. Bibcode:2007ApJS..172..561B. doi:10.1086/519457. ISSN 0067-0049.
  3. ↑ Ogle, Patrick M.; Lanz, Lauranne; Appleton, Philip N.; Helou, George; Mazzarella, Joseph (2019-07-15). "A Catalog of the Most Optically Luminous Galaxies at z < 0.3: Super Spirals, Super Lenticulars, Super Post-mergers, and Giant Ellipticals". The Astrophysical Journal Supplement Series. 243 (1): 14. arXiv:1904.02806. Bibcode:2019ApJS..243...14O. doi:10.3847/1538-4365/ab21c3. ISSN 1538-4365.
  4. ↑ Bernardi, M.; Sheth, R. K.; Nichol, R. C.; Miller, C. J.; Schlegel, D.; Frieman, J.; Schneider, D. P.; Subbarao, M.; York, D. G.; Brinkmann, J. (April 2006). "A Search for the Most Massive Galaxies: Double Trouble?". The Astronomical Journal. 131 (4): 2018–2034. arXiv:astro-ph/0510696. Bibcode:2006AJ....131.2018B. doi:10.1086/499770. ISSN 0004-6256.
  5. ↑ He, Yan-Qin; Hao, Cai-Na; Xia, Xiao-Yang (2014-01-30). "Revisiting the dichotomy of early-type galaxies". Research in Astronomy and Astrophysics. 14 (2): 144–158. arXiv:1309.5554. Bibcode:2014RAA....14..144H. doi:10.1088/1674-4527/14/2/003. ISSN 1674-4527.
  6. ↑ Tiret, O.; Salucci, P.; Bernardi, M.; Maraston, C.; Pforr, J. (2010-11-09). "The inner structure of very massive elliptical galaxies: implications for the inside-out formation mechanism of z∼ 2 galaxies". Monthly Notices of the Royal Astronomical Society. 411 (3): 1435–1444. arXiv:1009.5185. doi:10.1111/j.1365-2966.2010.17768.x. ISSN 0035-8711.
  7. ↑ Bernardi, M.; Hyde, J. B.; Fritz, A.; Sheth, R. K.; Gebhardt, K.; Nichol, R. C. (2008-12-11). "A search for the most massive galaxies - II. Structure, environment and formation". Monthly Notices of the Royal Astronomical Society. 391 (3): 1191–1209. arXiv:0809.2602. Bibcode:2008MNRAS.391.1191B. doi:10.1111/j.1365-2966.2008.13876.x. ISSN 0035-8711.
  8. ↑ Hyde, J. B.; Bernardi, M.; Sheth, R. K.; Nichol, R. C. (2008-12-21). "A search for the most massive galaxies - III. Global and central structure". Monthly Notices of the Royal Astronomical Society. 391 (4): 1559–1576. arXiv:0809.2609. Bibcode:2008MNRAS.391.1559H. doi:10.1111/j.1365-2966.2008.13966.x. ISSN 0035-8711.
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