Extra-planar gas in the spiral galaxy NGC 4559

Abstract

We present 21-cm line observations of the spiral galaxy NGC 4559, made with the Westerbork Synthesis Radio Telescope. We have used them to study the HI distribution and kinematics, the relative amount and distribution of luminous and dark matter in this galaxy and, in particular, the presence of extra-planar gas. Our data do reveal the presence of such a component, in the form of a thick disk, with a mass of 5.9 x 10^8 Mo (one tenth of the total HI mass) and a mean rotation velocity 25-50 km/s lower than that of the thin disk. The extra-planar gas may be the result of galactic fountains but accretion from the IGM cannot be ruled out. With this study we confirm that lagging, thick HI layers are likely to be common in spiral galaxies.

arXiv comment17 pages, 10 figures. Accepted for publication in A&A

References in corpus (6)

• Deep H I Survey of the Spiral Galaxy NGC 2403
• The HI Halo of NGC 891
• The star-forming environment of a ULX in NGC 4559: an optical study
• Probable intermediate mass black holes in NGC4559: XMM-Newton spectral and timing constraints
• High-Latitude HI in the Low Surface Brightness Galaxy UGC7321
• Ionization, Kinematics, and Extent of the Diffuse Ionized Gas Halo of NGC 5775

Cited by in corpus (63)

• SPARC: Mass Models for 175 Disk Galaxies with Spitzer Photometry and Accurate Rotation Curves
• Cold gas accretion in galaxies
• A Search for Extended Ultraviolet Disk (XUV-disk) Galaxies in the Local Universe
• The cold gaseous halo of NGC 891
• NGC 3741: dark halo profile from the most extended rotation curve
• HI kinematics and dynamics of Messier 31
• A Dynamical Model for the Extra-planar Gas in Spiral Galaxies
• HI holes and high-velocity clouds in the spiral galaxy NGC 6946
• The Abundance Properties of Nearby Late-Type Galaxies.I. The Data
• The Plateau de Bure + 30m Arcsecond Whirlpool Survey reveals a thick disk of diffuse molecular gas in the M51 galaxy
• Fuel Efficient Galaxies: Sustaining Star Formation with Stellar Mass Loss
• Supernova-driven gas accretion in the Milky Way
• The Kinematics of Thick Disks in Nine External Galaxies
• The Westerbork SINGS Survey: I. Overview and Image Atlas
• HALOGAS: Extraplanar gas in NGC 3198
• The Kinematics of Thick Disks in External Galaxies
• H-alpha Kinematics of the SINGS Nearby Galaxies Survey. II
• Hydrodynamical simulations of Galactic fountains I: evolution of single fountains
• The dark matter halo shape of edge-on disk galaxies - III. Modelling the HI observations: results
• HALOGAS: the properties of extraplanar HI in disc galaxies
• Drivers of HI Turbulence in Dwarf Galaxies
• A dynamical measurement of the disk mass in Elias 2-27
• HALOGAS: HI Observations and Modeling of the Nearby Edge-on Spiral Galaxy NGC 4565
• Kinematics of the Atomic ISM in M33 on 80 pc scales
• HALOGAS observations of NGC 5023 and UGC 2082: Modeling of non-cylindrically symmetric gas distributions in edge-on galaxies
• An HI survey of six Local Group analogs: I. Survey description and the search for high-velocity clouds
• A Correlation Between Galaxy Morphology and MgII Halo Absorption Strength
• Aperture Synthesis Observations of the Nearby Spiral NGC 6503: Modeling the Thin and Thick HI Disks
• Milky Way Disk-Halo Transition in HI: Properties of the Cloud Population
• The role of gas infall in the evolution of disc galaxies
• High-Velocity Clouds in the Nearby Spiral Galaxy M 83
• Mass models from high-resolution HI data of the dwarf galaxy NGC 1560
• Anomalous HI in NGC 2997
• Cotton gravity and 84 galaxy rotation curves
• Vertically Extended Neutral Gas in the Massive Edge-on Spiral NGC 5746
• On the Kinematics of Cold, Metal-enriched Galactic Fountain Flows in Nearby Star-forming Galaxies
• How can star formation be sustained?
• GHASP: an H$\alpha$ kinematical survey of spiral galaxies -- XIII. Distribution of luminous and dark matter in spiral and irregular nearby galaxies using H$\alpha$ and HI rotation curves and WISE photometry
• The dark matter halo shape of edge-on disk galaxies - II. Modelling the HI observations: methods
• Fountain-driven gas accretion feeding star formation over the disc of NGC 2403
• Warp or lag? The ionized and neutral hydrogen gas in the edge-on dwarf galaxy UGC 1281
• Structure and Kinematics of the Nearby Dwarf Galaxy UGCA 105
• The Evolution of the ISM in the Mildly Disturbed Spiral Galaxy NGC 4647
• A Kinematic Analysis of Ionised Extraplanar Gas in the Spiral Galaxies NGC 3982 and NGC 4152
• The flaring HI disk of the nearby spiral galaxy NGC 2683
• Neutral hydrogen in galactic fountains
• Storm fronts over galaxy discs: Models of how waves generate extraplanar gas and its anomalous kinematics
• Anomalous gas in ESO 149-G003: A MeerKAT-16 View
• Weighing protoplanetary discs with kinematics: physical model, method and benchmark
• The Relationship Between Baryons and Dark Matter in Extended Galaxy Halos
• Astrophysics in 2005
• Local stability of self-gravitating fluid disks made of two components in relative motion
• Vertical gradients of azimuthal velocity in a global thin disk model of spiral galaxies NGC 2403, NGC 4559, NGC 4302 and NGC 5775
• Gas circulation and galaxy evolution
• Perfect fluid dark matter: a viability test with galaxy rotation curves
• New evidence for halo gas accretion onto disk galaxies
• Cumulative Oxygen Abundances of Spiral Galaxies
• Uncovering Extraplanar Gas in UGCA 250 with the Ultra-deep MHONGOOSE Survey
• Star-Formation in Neutral Hydrogen Gas Reservoirs at Cosmic Noon
• Recent Developments on the HI Gas of Low-Redshift Galaxies Seen by the 21cm Emission Lines
• The gaseous haloes of disc galaxies
• Modeling vertical structure in circular velocity of spiral galaxy NGC 4244
• A new technique to isolate kinematically anomalous gas in HI data cubes