Evaluating the efficacy of a data cube treatment procedure for kinematic analyses: application to NGC 3115 and NGC 4699

Abstract

Data cubes have been increasingly used in astronomy. These data sets, however, are usually affected by instrumental effects and high-frequency noise. In this work, we evaluate the efficacy of a data cube treatment methodology, previously proposed by our research group, for analyses focused on the stellar and gas kinematics. To do that, we used data cubes of the central regions of the galaxies NGC 3115 and NGC 4699, obtained with the Integral Field Unit of the Gemini Multi-Object Spectrograph. For each galaxy, we analysed three data cubes: non-treated, filtered (with the Butterworth spatial filtering) and filtered and deconvolved (with the Richardson-Lucy deconvolution). For each data cube, we performed a dynamical modelling, using Jeans Anisotropic Models, to obtain, among other parameters, the masses of the central supermassive black holes. Both for NGC 3115 and NGC 4699, the values of the parameters provided by the dynamical modelling from the non-treated, filtered and filtered and deconvolved data cubes were compatible, at the 1-$\sigma$ level. However, the use of the Butterworth spatial filtering decreased the uncertainty of the parameters. The additional use of the Richardson-Lucy deconvolution decreased even more the uncertainty of the parameters. The complete data treatment procedure resulted in decreases of 41% and 45% in the uncertainties of the supermassive black hole masses in NGC 3115 and NGC 4699, respectively. These results indicate that our treatment procedure not only does not compromise analyses of data cubes focused on the stellar or gas kinematics, but actually improves the quality of the results.

15 pages, 10 figures, 3 tables. Published in MNRAS

References in corpus (40)

• A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• The Demography of Massive Dark Objects in Galaxy Centres
• A Relationship Between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
• Cosmic-Ray Rejection by Laplacian Edge Detection
• MILES: A Medium resolution INT Library of Empirical Spectra
• The M-sigma and M-L Relations in Galactic Bulges and Determinations of their Intrinsic Scatter
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances
• The SAURON project - IV. The mass-to-light ratio, the virial mass estimator and the fundamental plane of elliptical and lenticular galaxies
• HyperLEDA. III. The catalogue of extragalactic distances
• The Atlas3D project - XV. Benchmark for early-type galaxies scaling relations from 260 dynamical models: mass-to-light ratio, dark matter, Fundamental Plane and Mass Plane
• The SAURON project. I. The panoramic integral-field spectrograph
• Measuring the inclination and mass-to-light ratio of axisymmetric galaxies via anisotropic Jeans models of stellar kinematics
• Efficient Multi-Gaussian Expansion of galaxies
• Cosmicflows-3
• The Updated BaSTI Stellar Evolution Models and Isochrones: I. Solar Scaled Calculations
• The SINFONI Black Hole Survey: The Black Hole Fundamental Plane revisited and the paths of (co-) evolution of supermassive black holes and bulges
• Composite Bulges: The Coexistence of Classical Bulges and Disky Pseudobulges in S0 and Spiral Galaxies
• Dynamical models of NGC 3115
• PCA Tomography: how to extract information from datacubes
• Supermassive Black Holes and the Evolution of Galaxies
• Exploring the mass assembly of the early-type disc galaxy NGC3115 with MUSE
• Eccentric-disk models for the nucleus of M31
• GMOS Spectroscopy of the S0 galaxy NGC 3115
• Resolving the Bondi Accretion Flow toward the Supermassive Black Hole of NGC 3115 with Chandra
• A treatment procedure for Gemini North/NIFS data cubes: application to NGC 4151
• A treatment procedure for VLT/SINFONI data cubes: application to NGC 5643
• An off-centered active galactic nucleus in NGC 3115
• A treatment procedure for GMOS/IFU data cubes: application to NGC 2835
• The multiwavelength spectrum of NGC 3115: Hot accretion flow properties
• Discovery of an Halpha emitting disk around the supermassive black hole of M31
• Recovering the origins of the lenticular galaxy NGC 3115 using multi-band imaging
• Modeling Hot Gas Flow in the Low-Luminosity Active Galactic Nucleus of NGC3115
• Discovery of a Flat-Spectrum Radio Nucleus in NGC 3115
• The molecular H2 emission and the stellar kinematics in the nuclear region of the Sombrero galaxy
• The DIVING${}^{3D}$ Survey -- Deep IFS View of Nuclei of Galaxies -- I. Definition and Sample Presentation
• The DIVING${}^{3D}$ Survey -- Deep IFS View of Nuclei of Galaxies -- II. First results: nuclear emission-line properties of the mini-DIVING${}^{3D}$ sample
• The DIVING${}^{3D}$ Survey - Deep IFS View of Nuclei of Galaxies - III. Analysis of the nuclear region of the early-type galaxies of the sample
• Investigating the Candidate Displaced Active Galactic Nucleus in NGC 3115