The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.
Hubble Space Telescope Images of a Sample of 20 Nearby Luminous Quasars
Open accessAbstract
Observations with the Wide-Field Camera of the Hubble Space T elescope ( HST ) are presented for a representative sample of 20 intrinsically luminous quasars with redshifts smaller than 0.30. These observations show that luminous quasars occur in diverse environments that include ellipticals as bright as the brightest cluster galaxies (two), apparently normal ellipticals (10), apparently normal spirals with H II regions (three), complex systems of gravitationally interacting components (three), and faint surrounding nebulosity (two). The quasar host galaxies are centered on the quasar to the accuracy of our measurements, 400 pc. There are more radio-quiet quasars in galaxies that appear to be ellipticals (seven) than in spiral hosts (three), contrary to expectations. However, three, and possibly five, of the six radio-loud quasars have detectable elliptical hosts, in agreement with expectations. The luminous quasars studied in this paper occur preferentially in luminous galaxies. The average absolute magnitude of the hosts is 2.2 mag brighter than expected for a field galaxy luminosity function. The superb optical characteristics of the repaired HST make possible the detection of close galactic companions; we detect eight companion galaxies within projected distances of 10 kpc from quasar nuclei. The presence of very close companions, the images of current gravitational interactions, and the higher density of galaxies around the quasars suggest that gravitational interactions play an important role in triggering the quasar phenomenon.
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Cites
An analytic expression for the luminosity function for galaxies.
Schechter, P. (1976) · The Astrophysical Journal · doi:10.1086/154079 · Cited by 2,870
Spectral evolution of stellar populations using isochrone synthesis
Bruzual A., G., & Charlot, S. (1993) · The Astrophysical Journal · doi:10.1086/172385 · Cited by 1,808
Galaxy Colors in Various Photometric Band Systems
Fukugita, M., Shimasaku, K., & Ichikawa, T. (1995) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133643 · Cited by 1,144
The Photometric Performance and Calibration of WFPC2
Holtzman, J. A., Burrows, C. J., Casertano, S., Hester, J. J., Trauger, J. T., Watson, A. M., & Worthey, G. (1995) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133664 · Cited by 1,072
A catalogue of quasars and active nuclei: 13th edition
Véron-Cetty, M.-P., & Véron, P. (2010) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201014188 · Cited by 761
Analysis of a complete galaxy redshift survey - II. The field-galaxy luminosity function
Efstathiou, G., Ellis, R. S., & Peterson, B. A. (1988) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/232.2.431 · Cited by 556
etal; (1997) · Journal of Occupational & Environmental Medicine · doi:10.1097/00043764-199707000-00017 · Cited by 483
The performance and calibration of WFPC2 on the Huble Space Telescope
Holtzman, J. A., Hester, J. J., Casertano, S., Trauger, J. T., Watson, A. M., Ballester, G. E., Burrows, C. J., Clarke, J. T., Crisp, D., Evans, R. W., et al. (1995) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133533 · Cited by 444
CCD photometry of the old open cluster M67
Montgomery, K. A., Marschall, L. A., & Janes, K. A. (1993) · The Astronomical Journal · doi:10.1086/116628 · Cited by 291
Brightest cluster galaxies as standard candles
Postman, M., & Lauer, T. R. (1995) · The Astrophysical Journal · doi:10.1086/175245 · Cited by 253
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Formation of z∼6 Quasars from Hierarchical Galaxy Mergers
Li, Y., Hernquist, L., Robertson, B., Cox, T. J., Hopkins, P. F., Springel, V., Gao, L., Di Matteo, T., Zentner, A. R., Jenkins, A., et al. (2007) · The Astrophysical Journal · doi:10.1086/519297 · Cited by 301
Hopkins, P. F., Somerville, R. S., Hernquist, L., Cox, T. J., Robertson, B., & Li, Y. (2006) · The Astrophysical Journal · doi:10.1086/508503 · Cited by 270
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Alexander, D. M., Hickox, R. C., Aird, J., Combes, F., Costa, T., Habouzit, M., Harrison, C. M., Leng, R. I., Morabito, L. K., Uckelman, S. L., et al. (2025) · New Astronomy Reviews · doi:10.1016/j.newar.2025.101733 · Cited by 18
Metadata
- Authors
- Bahcall, J. N., Kirhakos, S., Saxe, D. H., & Schneider, D. P.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1997-04-20
- Volume
- 479
- Issue
- 2
- Pages
- 642-658
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2333656526
- Cited by
- 538
- References
- 13
- FWCI
- 35.53
- Type
- journal article
- Language
- en
- Open access
- bronze
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