Virgo Filaments VI: H$\alpha$ clumps in the filaments around the Virgo galaxy cluster

Abstract

It is still not clear which environmental processes operate in filaments. Given the ubiquity of filaments and their importance in feeding clusters, a proper understanding of these mechanisms is crucial to a more complete picture of galaxy evolution. To investigate them, we need large galaxy samples with spatially resolved information. As part of this effort, we analyse resolved H$\alpha$ maps of 685 galaxies inside and outside the filaments around the Virgo cluster in addition to extensive measurements of integrated physical properties. We create a pipeline to decompose the H$\alpha$ images into individual clumps that trace star forming regions. We find that the number and average size of clumps in a galaxy are well-defined functions of distance and angular resolution. In particular, the power-law relation between the number of clumps and the distance of a galaxy is consistent with a fractal structure of star forming regions. We formulate an algorithm to compare filament and non-filament galaxies after removing observational differences. Although we do not have any conclusive evidence for a difference in clump size distributions between filament and non-filament galaxies, we do find that filament galaxies have slightly more peripheral clumps than their non-filament counterparts.

14 pages, 10 figures, accepted in A&A

References in corpus (35)

• HyperLEDA. III. The catalogue of extragalactic distances
• An H-alpha Imaging Survey of Galaxies in the Local 11 Mpc Volume
• Physical properties of molecular clouds for the entire Milky Way disk
• The PHANGS-MUSE survey -- Probing the chemo-dynamical evolution of disc galaxies
• Clumpy Galaxies in CANDELS. I. The Definition of UV Clumps and the Fraction of Clumpy Galaxies at 0.5<z<3
• Target Selection and Validation of DESI Luminous Red Galaxies
• Galaxy Groups within 3500 km s${}^{-1}$
• Giant Molecular Cloud Catalogues for PHANGS-ALMA: Methods and Initial Results
• Molecular Gas Properties on Cloud Scales Across the Local Star-forming Galaxy Population
• Cosmic Web and Star Formation Activity in Galaxies at z~1
• Hierarchical Star Formation in the Spiral Galaxy NGC 628
• The nature of giant clumps in distant galaxies probed by the anatomy of the Cosmic Snake
• From voids to filaments: environmental transformations of galaxies in the SDSS
• Spatially resolved star formation and fuelling in galaxy interactions
• The GOGREEN Survey: A deep stellar mass function of cluster galaxies at 1.0<z<1.4 and the complex nature of satellite quenching
• Age, size, and position of H ii regions in the Galaxy. Expansion of ionized gas in turbulent molecular clouds
• The Effect of Filaments and Tendrils on the HI Content of Galaxies
• Redshift-Independent Distances in the NASA/IPAC Extragalactic Database: Methodology, Content and Use of NED-D
• Virgo Filaments I: Processing of gas in cosmological filaments around the Virgo cluster
• Large-scale filamentary structures around the Virgo cluster revisited
• GASP. XVI. Does cosmic web enhancement turn on star formation in galaxies?
• Stellar Masses of Giant Clumps in CANDELS and Simulated Galaxies Using Machine Learning
• Galaxy filaments as pearl necklaces
• The role of the cosmic web in the scatter of the galaxy stellar mass - gas metallicity relation
• Virgo Filaments II: Catalog and First Results on the Effect of Filaments on galaxy properties
• The effect of cosmic web filaments on galaxy evolution
• Large Scale Structure in CHILES
• Clustercentric distance or local density? It depends on galaxy morphology
• The PHANGS-HST-Halpha Survey: Warm Ionized Gas Physics at High Angular resolution in Nearby GalaxieS with the Hubble Space Telescope
• Simulating nearby disc galaxies on the main star formation sequence I. Bar formation and the building of the central gas reservoir
• Investigating Clumpy Galaxies in the Sloan Digital Sky Survey Stripe 82 using the Galaxy Zoo
• Fractal dimension and turbulence in Giant HII Regions
• The PHANGS-MUSE/HST-Halpha Nebulae Catalogue
• J-PLUS: Spectroscopic validation of H$\alpha$ emission line maps in spatially resolved galaxies
• Virgo Filaments V: Disrupting the Baryon Cycle in the NGC 5364 Galaxy Group