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QSO SMSS J215728.21-360215.1

Bryce Historical posted on May 20, 2018
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Description


QSO SMSS J215728.21-360215.1 BLACK HOLE Discovery of the most ultra-luminous QSO using Gaia, SkyMapper and WISE We report the discovery of the ultra-luminous QSO SMSS~J215728.21-360215.1 with magnitude z=16.9 and W4=7.42 at redshift 4.75. Given absolute magnitudes of M145,AB=−29.3, M300,AB=−30.12 and logLbol/Lbol,⊙=14.84, it is the QSO with the highest unlensed UV- optical luminosity currently known in the Universe. It was found by combining proper- motion data from Gaia DR2 with photometry from SkyMapper DR1 and the Wide-field Infrared Survey Explorer (WISE). In the Gaia database it is an isolated single source and thus unlikely to be strongly gravitationally lensed. It is also unlikely to be a beamed source as it is not discovered in the radio domain by either NVSS or SUMSS. It is classed as a weak-emission-line QSO and possesses broad absorption line features. A lightcurve from ATLAS spanning the time from October 2015 to December 2017 shows little sign of variability. _____________________________________ TROU NOIR QSO SMSS J215728.21-260215.1 Découverte du QSO le plus ultra-lumineux avec Gaia, SkyMapper et WISE Nous rapportons la découverte du QSO ultra-lumineux SMSS ~ J215728.21-360215.1 avec une magnitude z = 16.9 et W4 = 7.42 à redshift 4.75. Compte tenu des grandeurs absolues de M145, AB = -29,3, M300, AB = -30,12 et logLbol / Lbol, ⊙ = 14,84, c'est le QSO avec la luminosité UV-optique la plus élevée actuellement connue dans l'Univers. Il a été trouvé en combinant les données du mouvement propre de Gaia DR2 avec la photométrie de SkyMapper DR1 et le Wide-field Infrared Survey Explorer (WISE). Dans la base de données Gaia, il s'agit d'une source unique isolée et il est donc peu probable qu'elle soit fortement gravitationnelle. Il est également peu probable qu'il s'agisse d'une source transmise par faisceau car elle n'est pas découverte dans le domaine radio par NVSS ou SUMSS. Il est classé comme un QSO de ligne d'émission faible et possède de larges caractéristiques de ligne d'absorption. Une courbe de lumière d'ATLAS couvrant la période d'octobre 2015 à décembre 2017 montre peu de signes de variabilité.

Comments (15)


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DukeNukem2005

2:54PM | Sun, 20 May 2018

It is very good!

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jendellas

3:40PM | Sun, 20 May 2018

What an amazing image & info.

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Leije

5:02PM | Sun, 20 May 2018

Intéressant !

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jmb007

5:24PM | Sun, 20 May 2018

bien

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Richardphotos

8:56PM | Sun, 20 May 2018

I have been reading recent events from space. very interesting Bryce spatial art

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BryceHoro

1:50AM | Mon, 21 May 2018

Great depiction of this object.

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Jean_C

2:21AM | Mon, 21 May 2018

De superbes infos!

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Kordouane

2:40AM | Mon, 21 May 2018

Très intéressant, bravo 🌟

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rayag

6:18AM | Mon, 21 May 2018

Very interesting !!!

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goodoleboy

7:47PM | Mon, 21 May 2018

Nice transition of white to black.HoppingCool.jpg

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RodS

7:12PM | Tue, 22 May 2018

Lots of fascinating stuff out there.... Cool render!

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Glendaw

8:55PM | Fri, 25 May 2018

Extraordinary scene and information.

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VEDES

2:44AM | Sat, 26 May 2018

perfect !!!!!!

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Faemike55

12:26PM | Mon, 28 May 2018

Great image and cool information

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Drakkendark

6:28PM | Tue, 12 June 2018

Very cool.


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