The FAST Ursa Major supergroup HI survey (FUMaS): catalog and HI mass function

Abstract

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we have performed an Ursa Major supergroup HI Survey (FUMaS) covering the entire UMa region centered at RA=11${}^h$59${}^m$28${}^s$.3, DEC=49${}^{\circ }$05'18" with a radius of 7.5${}^{\circ }$. We have obtained the most complete catalog of HI sources in the UMa supergroup, containing 178 HI sources with velocities in the range 625-1213.4 km s${}^{-1}$ and masses in the range 10${}^{6.0}$-10${}^{10.1}$ M${}_{\odot }$ assuming a distance of 17.4 Mpc. Among them, 55 HI sources were detected for the first time, of which 32 do not have known optical redshifts. For these 32 sources, we have searched the DESI Legacy Surveys and found optical counterparts for 25 of them (with optical images, but no redshifts), with the remaining 7 sources to be pure HI clouds without an optical counterpart. We detected HI distributions in some interacting systems and discussed four small groups in detail. We computed the HIMF of the UMa supergroup using the 1/V${}_{\max }$ method and fitting it with the non-linear least squares (NLLS) and modified maximum likelihood (MML) methods. We obtained the following HIMF parameters: log${}_{10}$(${\varphi }_{\ast }$/Mpc${}^{-3}$) = -0.78 $\pm$ 0.15, $\alpha$ = -1.05 $\pm$ 0.07 and log${}_{10}$($M_{\ast }$/$M_{\odot }$) = 9.87 $\pm$ 0.19 for the NLLS method, and log${}_{10}$(${\varphi }_{\ast }$/Mpc${}^{-3}$) = -0.70 $\pm$ 0.11, $\alpha$ = -1.05 $\pm$ 0.05 and log${}_{10}$($M_{\ast }$/$M_{\odot }$) = 9.77 $\pm$ 0.13 for the MML method. This result is similar to that derived from the VLA blind survey, but the slope is steeper because we detected more low-mass galaxies. The slope is flatter than that of the global HIMF, which agrees with the theoretical prediction that galaxies in high-density regions are stripped of gas due to interactions.

arXiv commentAccepted to the ApJS

References in corpus (60)

• The Optical and Near-Infrared Properties of Galaxies: I. Luminosity and Stellar Mass Functions
• Observational evidence for self-interacting cold dark matter
• Mass function of dark matter halos
• The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
• The Galaxy Luminosity Function and Luminosity Density at Redshift z=0.1
• The Arecibo Legacy Fast ALFA Survey: I. Science Goals, Survey Design and Strategy
• The Luminosity Function of Galaxies in SDSS Commissioning Data
• The tumultuous lives of galactic dwarfs and the missing satellites problem
• The HIPASS Catalogue - I. Data Presentation
• Beyond $\Lambda$CDM: Problems, solutions, and the road ahead
• The 1000 Brightest HIPASS Galaxies: HI Properties
• The Arecibo Legacy Fast ALFA Survey: The ALFALFA Extragalactic HI Source Catalog
• The HIPASS catalogue: Omega_HI and environmental effects on the HI mass function of galaxies
• The Atlas3D project -- XIII. Mass and morphology of HI in early-type galaxies as a function of environment
• The Fundamental Performance of FAST with 19-beam Receiver at L Band
• The Ursa Major Cluster of Galaxies. IV ; HI synthesis observations
• The Arecibo Legacy Fast ALFA Survey: X. The HI Mass Function and Omega_HI From the 40% ALFALFA Survey
• SoFiA: a flexible source finder for 3D spectral line data
• The HI Mass Function of Galaxies from a Deep Survey in the 21cm Line
• The 1000 Brightest HIPASS Galaxies: HI Mass Function and Omega_HI
• The ALFALFA HI mass function: A dichotomy in the low-mass slope and a locally suppressed 'knee' mass
• The Ursa Major Cluster of Galaxies. I. Cluster Definition and Photometric Data
• SoFiA 2 -- An automated, parallel HI source finding pipeline for the WALLABY survey
• The Arecibo Dual-Beam Survey: The HI Mass Function of Galaxies
• The detailed structure and the onset of galaxy formation in low-mass gaseous dark matter haloes
• MIGHTEE-HI: The HI emission project of the MeerKAT MIGHTEE survey
• FAST: Its Scientific Achievements and Prospects
• Cosmicflows-2: I-band Luminosity - HI Linewidth Calibration
• The FAST all sky HI survey (FASHI): The first release of catalog
• The busy function: a new analytic function for describing the integrated 21-cm spectral profile of galaxies
• Morphology, Environment, and the HI Mass Function
• Systematically Measuring Ultra-Diffuse Galaxies (SMUDGes). V. The Complete SMUDGes Catalog and the Nature of Ultra-Diffuse Galaxies
• The abundance of dark galaxies
• The Arecibo Legacy Fast ALFA Survey: IX. The Leo Region HI Catalog, Group Membership and the HI Mass Function for the Leo I Group
• An HI Survey of Six Local Group Analogs. II. HI properties of group galaxies
• Extragalactic HI Surveys
• The Ursa Major Cluster of Galaxies. III. Optical observations of dwarf galaxies and the luminosity function down to M_R=-11
• Environmental dependence of the HI mass function in the ALFALFA 70% catalogue
• The HI Mass Function and Velocity Width Function of Void Galaxies in the Arecibo Legacy Fast ALFA Survey
• NIBLES - an HI census of stellar mass selected SDSS galaxies: I. The Nançay HI survey
• The properties of early-type galaxies in the Ursa Major cluster
• Update on HI data collection from GBT, Parkes and Arecibo telescopes for the Cosmic Flows project
• HI Observations of Five Groups of Galaxies
• A blind HI survey in the Ursa Major region
• Eddington's Demon: Inferring Galaxy Mass Functions and other Distributions from Uncertain Data
• HiFAST: an HI data calibration and imaging pipeline for FAST
• FAST reveals new evidence for M94 as a merger
• The HI mass function of group galaxies in the ALFALFA survey
• MIGHTEE-HI: The first MeerKAT HI mass function from an untargeted interferometric survey
• A deep Parkes HI survey of the Sculptor group and filament: HI mass function and environment
• Dark and luminous matter in the NGC 3992 group of galaxies, I. The large barred spiral NGC 3992
• HI observations of the MATLAS dwarf and ultra-diffuse galaxies
• The HI mass function in the Parkes HI Zone of Avoidance survey
• A rare example of low surface-brightness radio lobes in a gas-rich early-type galaxy: the story of NGC 3998
• The Ursa Major cluster redefined as a `supergroup'
• Dark and luminous matter in the NGC 3992 group of galaxies, II. The dwarf companions UGC 6923, UGC 6940, UGC 6969, and the Tully-Fisher relation
• High sensitivity HI image of diffuse gas and new tidal features in M51 observed by FAST
• The HI Mass Function of the Local Universe: Combining Measurements from HIPASS, ALFALFA and FASHI
• The Ursa Major Association of Galaxies. VI: A relative dearth of gas-rich dwarf galaxies
• Searching in HI for Massive Low Surface Brightness Galaxies: Samples from HyperLeda and the UGC

Cited by in corpus (1)

• The MeerKAT Fornax Survey VI. The collapse of the galaxy HI Mass Function in Fornax