Serendipitous Discovery of a Physical Binary Quasar at z=1.76

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Serendipitous Discovery of a Physical Binary Quasar at z=1.76. / Altamura, E.; Brennan, S.; Lesniewska, A.; Pinter, V.; dos Reis, S. N.; Pursimo, T.; Fynbo, J. P. U.; Geier, S.; Heintz, K. E.; Moller, P.

In: Astronomical Journal, Vol. 159, No. 3, 122, 21.02.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Altamura, E, Brennan, S, Lesniewska, A, Pinter, V, dos Reis, SN, Pursimo, T, Fynbo, JPU, Geier, S, Heintz, KE & Moller, P 2020, 'Serendipitous Discovery of a Physical Binary Quasar at z=1.76', Astronomical Journal, vol. 159, no. 3, 122. https://doi.org/10.3847/1538-3881/ab6e67

APA

Altamura, E., Brennan, S., Lesniewska, A., Pinter, V., dos Reis, S. N., Pursimo, T., Fynbo, J. P. U., Geier, S., Heintz, K. E., & Moller, P. (2020). Serendipitous Discovery of a Physical Binary Quasar at z=1.76. Astronomical Journal, 159(3), [122]. https://doi.org/10.3847/1538-3881/ab6e67

Vancouver

Altamura E, Brennan S, Lesniewska A, Pinter V, dos Reis SN, Pursimo T et al. Serendipitous Discovery of a Physical Binary Quasar at z=1.76. Astronomical Journal. 2020 Feb 21;159(3). 122. https://doi.org/10.3847/1538-3881/ab6e67

Author

Altamura, E. ; Brennan, S. ; Lesniewska, A. ; Pinter, V. ; dos Reis, S. N. ; Pursimo, T. ; Fynbo, J. P. U. ; Geier, S. ; Heintz, K. E. ; Moller, P. / Serendipitous Discovery of a Physical Binary Quasar at z=1.76. In: Astronomical Journal. 2020 ; Vol. 159, No. 3.

Bibtex

@article{7b2eba4f460247088e9ae649b4820a20,
title = "Serendipitous Discovery of a Physical Binary Quasar at z=1.76",
abstract = "Binary quasars are extremely rare objects, used to investigate clustering on very small scales at different redshifts. The cases where the two quasar components are gravitationally bound, known as physical binary quasars, can also exhibit enhanced astrophysical activity and therefore are of particular scientific interest. Here we present the serendipitous discovery of a physical pair of quasars with an angular separation of Delta(theta) = (8.76 +/- 0.11)''. The redshifts of the two quasars are consistent within the errors and measured as z = (1.76 +/- 0.01). Under the motivated assumption that the pair does not arise from a single gravitationally lensed quasar, the resulting projected physical separation was estimated as (76 +/- 1) kpc. For both targets we detected Si IV, C IV, C III], and Mg II emission lines. However, the two quasars show significantly different optical colors, one being among the most reddened quasars at z > 1.5 and the other with colors consistent with typical quasar colors at the same redshift. Therefore it is ruled out that the sources are a lensed system. This is our second serendipitous discovery of a pair of two quasars with different colors, having a separation",
keywords = "DIGITAL-SKY-SURVEY, EFFICIENT PHOTOMETRIC SELECTION, GRAVITATIONALLY LENSED QUASAR, SEPARATION, EXCESS, DUST",
author = "E. Altamura and S. Brennan and A. Lesniewska and V. Pinter and {dos Reis}, {S. N.} and T. Pursimo and Fynbo, {J. P. U.} and S. Geier and Heintz, {K. E.} and P. Moller",
year = "2020",
month = feb,
day = "21",
doi = "10.3847/1538-3881/ab6e67",
language = "English",
volume = "159",
journal = "The Astronomical Journal",
issn = "0004-6256",
publisher = "Institute of Physics Publishing, Inc",
number = "3",

}

RIS

TY - JOUR

T1 - Serendipitous Discovery of a Physical Binary Quasar at z=1.76

AU - Altamura, E.

AU - Brennan, S.

AU - Lesniewska, A.

AU - Pinter, V.

AU - dos Reis, S. N.

AU - Pursimo, T.

AU - Fynbo, J. P. U.

AU - Geier, S.

AU - Heintz, K. E.

AU - Moller, P.

PY - 2020/2/21

Y1 - 2020/2/21

N2 - Binary quasars are extremely rare objects, used to investigate clustering on very small scales at different redshifts. The cases where the two quasar components are gravitationally bound, known as physical binary quasars, can also exhibit enhanced astrophysical activity and therefore are of particular scientific interest. Here we present the serendipitous discovery of a physical pair of quasars with an angular separation of Delta(theta) = (8.76 +/- 0.11)''. The redshifts of the two quasars are consistent within the errors and measured as z = (1.76 +/- 0.01). Under the motivated assumption that the pair does not arise from a single gravitationally lensed quasar, the resulting projected physical separation was estimated as (76 +/- 1) kpc. For both targets we detected Si IV, C IV, C III], and Mg II emission lines. However, the two quasars show significantly different optical colors, one being among the most reddened quasars at z > 1.5 and the other with colors consistent with typical quasar colors at the same redshift. Therefore it is ruled out that the sources are a lensed system. This is our second serendipitous discovery of a pair of two quasars with different colors, having a separation

AB - Binary quasars are extremely rare objects, used to investigate clustering on very small scales at different redshifts. The cases where the two quasar components are gravitationally bound, known as physical binary quasars, can also exhibit enhanced astrophysical activity and therefore are of particular scientific interest. Here we present the serendipitous discovery of a physical pair of quasars with an angular separation of Delta(theta) = (8.76 +/- 0.11)''. The redshifts of the two quasars are consistent within the errors and measured as z = (1.76 +/- 0.01). Under the motivated assumption that the pair does not arise from a single gravitationally lensed quasar, the resulting projected physical separation was estimated as (76 +/- 1) kpc. For both targets we detected Si IV, C IV, C III], and Mg II emission lines. However, the two quasars show significantly different optical colors, one being among the most reddened quasars at z > 1.5 and the other with colors consistent with typical quasar colors at the same redshift. Therefore it is ruled out that the sources are a lensed system. This is our second serendipitous discovery of a pair of two quasars with different colors, having a separation

KW - DIGITAL-SKY-SURVEY

KW - EFFICIENT PHOTOMETRIC SELECTION

KW - GRAVITATIONALLY LENSED QUASAR

KW - SEPARATION

KW - EXCESS

KW - DUST

U2 - 10.3847/1538-3881/ab6e67

DO - 10.3847/1538-3881/ab6e67

M3 - Journal article

VL - 159

JO - The Astronomical Journal

JF - The Astronomical Journal

SN - 0004-6256

IS - 3

M1 - 122

ER -

ID: 247441462