2000MNRAS.317..989T

Query : 2000MNRAS.317..989T

2000MNRAS.317..989T - Mon. Not. R. Astron. Soc., 317, 989-995 (2000/October-1)

A wavelet analysis of the spectra of quasi-stellar objects.

THEUNS T. and ZAROUBI S.

Abstract (from CDS):

The temperature of the intergalactic medium (IGM) is an important factor in determining the linewidths of the absorption lines in the Lyα forest. We present a method to characterize the linewidth distribution using a decomposition of an Lyα spectrum in terms of discrete wavelets. Such wavelets form an orthogonal basis, so the decomposition is unique. We demonstrate using hydrodynamic simulations that the mean and dispersion of the wavelet amplitudes are strongly correlated with both the temperature of the absorbing gas and its dependence on the gas density. Since wavelets are also localized in space, we are able to analyse the temperature distribution as a function of position along the spectrum. We illustrate how this method could be used to identify fluctuations in the IGM temperature that might result from late reionization or local effects.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): hydrodynamics - intergalactic medium - quasars: absorption lines - cosmology: theory - large-scale structure of Universe

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 ICRF J111036.3+481752 Sy2 11 10 36.3247 +48 17 52.444   21.74 20.79     ~ 76 1

Query : 2000MNRAS.317..989T

Basic data :
ICRF J111036.3+481752 -- Seyfert 2 Galaxy
Other object types: otypes_help 		Rad (2014ApJS,ICRF,...), QSO (2016A&A,QSO,...), X (2016A&A,2XMM,...), AGN (2016A&A,[VV2010c]), MIR (WISEA,WISE), Sy2 (2022ApJS), G (2016MNRAS), * (Gaia), Opt (SDSS)
ICRS coord. (ep=J2000) : 		11 10 36.3247 +48 17 52.444 (Radio) [ 0.15 0.15 0 ] A 2007ApJ...658..203H
FK4 coord. (ep=B1950 eq=1950) : 		11 07 46.0078 +48 34 09.893 [ 0.15 0.15 0 ]
Gal coord. (ep=J2000) : 		158.9292963 +61.1790295 [ 0.15 0.15 0 ]
Proper motions mas/yr : 		0.265 0.257 [1.444 1.681 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 151180 [~] / z(spectroscopic) 0.742 [~] / cz 222446 [~]
   D 2023ApJ...958...29C
Fluxes (8) :
B 21.74 [~] D 2010A&A...518A..10V
V 20.79 [~] D 2010A&A...518A..10V
G 20.731916 [0.014355] C 2020yCat.1350....0G
u (AB) 22.7940 [0.3572] D 2020ApJS..250....8L
g (AB) 21.6384 [0.0568] C 2020ApJS..250....8L
r (AB) 20.3775 [0.0350] C 2020ApJS..250....8L
i (AB) 19.9494 [0.0297] C 2020ApJS..250....8L
z (AB) 19.4513 [0.0659] C 2020ApJS..250....8L
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Identifiers (48) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

ICRF J111036.3+481752 IERS B1107+485 S4 1107+48 2XMM J111036.2+481752
BP 127 ILT J111036.37+481752.4 S4 1107+485 3XMM J111036.2+481752
BWE 1107+4834 ILT J111036.32+481752.6 SDSS J111036.31+481752.3 [HMI96] 1107+4834
5C 2.183 IVS B1107+485 SDSS J111036.32+481752.3 [PT2000] J1110+4817
6C 110748+483347 JVAS B1107+485 TGSSADR J111036.3+481752 [VV2000] J111036.3+481753
6C 110745+483423 JVAS J1110+4817 TXS 1107+485 [VV2003] J111036.3+481753
7C 110746.20+483414.00 JVAS J1110+482 VCS1 J1110+4817 [VV2006] J111036.3+481753
CLASS J111036.3246+481752.444 MPWK 1107+485 VIPS J11106+4817 [VV2010c] J111036.3+481753
FIRST J111036.3+481752 NVSS J111036+481753 WB 1107+4834 [VV98] J111036.3+481753
GB1 1107+486 OHIO M 413 WISEA J111036.32+481752.3 Gaia DR3 789636132582513792
GB6 B1107+4834 52P 208 WISE J111036.32+481752.3 Gaia DR1 789636128281512960
87GB 110745.4+483404 QSO B1107+485 WN B1107.7+4834 Gaia DR2 789636132577259904

References (76 between 1850 and 2026) (Total 76)
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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Velocities : 10    PM : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : ICRF J111036.3+481752

Link by name to the catalogue in VizieR :

BWE 1107+4834 FIRST J111036.3+481752 IERS B1107+485 NVSS J111036+481753 SDSS J111036.31+481752.3
SDSS J111036.32+481752.3 WISEA J111036.32+481752.3 WISE J111036.32+481752.3 WN B1107.7+4834 Gaia DR3 789636132582513792
Gaia DR1 789636128281512960 Gaia DR2 789636132577259904

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