2013A&A...549A..83O

Query : 2013A&A...549A..83O

2013A&A...549A..83O - Astronomy and Astrophysics, volume 549A83-83 (2013/1-1)

Estimating hyperparameters and instrument parameters in regularized inversion illustration for Herschel/SPIRE map making.

ORIEUX F., GIOVANNELLI J.-F., RODET T. and ABERGEL A.

Abstract (from CDS):

We describe regularized methods for image reconstruction and focus on the question of hyperparameter and instrument parameter estimation, i.e. unsupervised and myopic problems. We developed a Bayesian framework that is based on the posteriordensity for all unknown quantities, given the observations. This density is explored by a Markov chain Monte-Carlo sampling technique based on a Gibbs loop and including a Metropolis-Hastings step. The numerical evaluation relies on the SPIRE instrument of the Herschel observatory. Using simulated and real observations, we show that the hyperparameters and instrument parameters are correctly estimated, which opens up many perspectives for imaging in astrophysics.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - methods: statistical - methods: numerical - techniques: image processing

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	NGC 7023	OpC	21 01 36.9	+68 09 48						~	739	0

Query : 2013A&A...549A..83O

Basic data :

NGC 7023 -- Open Cluster
Other object types:	`OpC (2022ApJS,OCISM,...)`, `Cl* (C,Cl,...)`, `IR (IRAS,PSCz,...)`, `V* (AAVSO)`, `HII (LBN)`, `RNe ([RK68])`, `ISM (GN)`, `UV ([SPB96])`
ICRS coord. (ep=J2000) :	`21 01 36.9 +68 09 48 (Optical) [ ] ~ ~`
FK4 coord. (ep=B1950 eq=1950) :	`21 00 59.7 +67 57 56 [ ]`
Gal coord. (ep=J2000) :	`104.0616 +14.1926 [ ]`
Proper motions mas/yr :	`7.815 -1.086 [0.562 0.553 90] C` `2022ApJS..262....7H`
Parallaxes (mas):	`2.905 [0.077] C` `2022ApJS..262....7H`

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`NGC 7023`	`IRAS F20599+6755`	`NAME IRIS Nebula`	`RAFGL 2695`
`C 2059+679`	`IRAS F21009+6758`	`OCISM 50`	`[BDB2003] G104.06+14.19`
`Cl VDB 139`	`IRAS 21009+6758`	`OCl 235`	`[RK68] 105`
`GN 21.01.0`	`LBN 104.08+14.21`	`PSCz P20599+6755`	`[SPB96] 2161`
`IRAS 20599+6755`	`LBN 487`	`PSCz P21009+6758`	`AAVSO 2044+67`

References (739 between 1850 and 2026) (Total 739)
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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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC 7023

Link by name to the catalogue in VizieR :

`NGC 7023`	`IRAS 20599+6755`	`IRAS F20599+6755`	`IRAS F21009+6758`	`IRAS 21009+6758`
`RAFGL 2695`

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