2023ApJ...952L..24A

Query : 2023ApJ...952L..24A

2023ApJ...952L..24A - Astrophys. J., 952, L24 (2023/July-3)

The Luminosity-Area Relation of z > 2 Quasars' Lyα Nebulae.

ARRIGONI BATTAIA F., OBREJA A., COSTA T., FARINA E.P. and CAI Z.

Abstract (from CDS):

Cool (T ∼ 10⁴ K) gas is commonly observed around z > 2 quasars as traced by extended Lyα emission. These large-scale nebulae are usually studied using circularly averaged surface-brightness profiles, which suppress information on morphological differences. Here, we revisit the Lyα nebulae around 78 z ∼ 2-3 quasars to obtain a novel estimate of their area and asymmetry using a common redshift-corrected surface-brightness threshold. We find a luminosity-area relation of the form $\mathrm{log}({L}_{\mathrm{Ly}\alpha }^{\mathrm{Neb}})={a}_{1}\mathrm{log}({\mathrm{Area}}^{\mathrm{Neb}})+{a}_{0}$ . Most nebulae are symmetric and bright, the most lopsided ones being the faintest and less extended. The enormous Lyα nebulae, asymmetric due to the presence of active companions, are the exceptions to this trend. By using simulations able to reproduce z ∼ 6 quasars' nebulae, we show that the observed relation should not vary with redshift. Finally, we discuss possible mechanisms that drive the relation and future work needed to constrain them.

Journal keyword(s): Quasars - Circumgalactic medium - High-redshift galaxies - Extended radiation sources

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	QSO J0848-0114	QSO	08 48 56.9597088984	-01 14 58.866204984						~	16	0

Query : 2023ApJ...952L..24A

Basic data :

QSO J0848-0114 -- Quasar

QSO (2014A&A,QSO), G (2022MNRAS,GAMA), * (Gaia), Opt (SDSS)

08 48 56.9597088984 -01 14 58.866204984 (Optical) [ 0.1491 0.0818 90 ] A 2020yCat.1350....0G

08 46 24.2229514081 -01 03 49.315963451 [ 0.1491 0.0818 90 ]

228.5200358241143 +25.2488244178826 [ 0.1491 0.0818 90 ]

0.370 -0.080 [0.228 0.171 90] A 2020yCat.1350....0G

V(km/s) 249165 [48] / z(spectroscopic) 2.29289 [0.00016] / cz 687391.1 [48.0] (Opt) C 2012ApJS..203...21A

G 18.512247 [0.006944] C 2020yCat.1350....0G

u (AB) 19.2133 [0.0228] C 2020ApJS..250....8L

g (AB) 18.5642 [0.0149] C 2020ApJS..250....8L

r (AB) 18.3210 [0.0158] C 2020ApJS..250....8L

i (AB) 18.2674 [0.0182] C 2020ApJS..250....8L

z (AB) 18.0431 [0.0215] C 2020ApJS..250....8L

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`QSO J0848-0114`	`GAMA 3605382`	`Gaia DR3 3073846284873496192`
`GAMA J084856.95-011458.9`	`SDSS J084856.95-011458.8`	`Gaia DR2 3073846284873496192`

References (16 between 1850 and 2026) (Total 16)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : QSO J0848-0114

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SDSS J084856.95-011458.8 Gaia DR3 3073846284873496192 Gaia DR2 3073846284873496192

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