Browse > Article
http://dx.doi.org/10.5303/JKAS.2022.55.5.149

GLOBAL Hɪ PROPERTIES OF GALAXIES VIA SUPER-PROFILE ANALYSIS  

Kim, Minsu (Department of Astronomy and Space Science, Sejong University)
Oh, Se-Heon (Department of Astronomy and Space Science, Sejong University)
Publication Information
Journal of The Korean Astronomical Society / v.55, no.5, 2022 , pp. 149-172 More about this Journal
Abstract
We present a new method which constructs an Hɪ super-profile of a galaxy which is based on profile decomposition analysis. The decomposed velocity profiles of an Hɪ data cube with an optimal number of Gaussian components are co-added after being aligned in velocity with respect to their centroid velocities. This is compared to the previous approach where no prior profile decomposition is made for the velocity profiles being stacked. The S/N improved super-profile is useful for deriving the galaxy's global Hɪ properties like velocity dispersion and mass from observations which do not provide sufficient surface brightness sensitivity for the galaxy. As a practical test, we apply our new method to 64 high-resolution Hɪ data cubes of nearby galaxies in the local Universe which are taken from THINGS and LITTLE THINGS. In addition, we also construct two additional Hɪ super-profiles of the sample galaxies using symmetric and all velocity profiles of the cubes whose centroid velocities are determined from Hermite h3 polynomial fitting, respectively. We find that the Hɪ super-profiles constructed using the new method have narrower cores and broader wings in shape than the other two super-profiles. This is mainly due to the effect of either asymmetric velocity profiles' central velocity bias or the removal of asymmetric velocity profiles in the previous methods on the resulting Hɪ super-profiles. We discuss how the shapes (𝜎n/𝜎b, An/Ab, and An/Atot) of the new Hɪ super-profiles which are measured from a double Gaussian fit are correlated with star formation rates of the sample galaxies and are compared with those of the other two super-profiles.
Keywords
galaxies: dwarf; galaxies: ISM; galaxies: irregular; galaxies: kinematics and dynamics; ISM: kinematics and dynamics;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Oh, S.-H., de Blok, W. J. G., Brinks, E., et al. 2011, Dark and Luminous Matter in THINGS Dwarf Galaxies, AJ, 141, 193   DOI
2 Oh, S.-H., Staveley-Smith, L., & For, B.-Q. 2019, Robust profile decomposition for large extragalactic spectral-line surveys, MNRAS, 485, 5021   DOI
3 Park, H.-J., Oh, S.-H., Wang, J., et al. 2022, Gas dynamics and star formation in NGC 6822, AJ, 164, 82   DOI
4 Popping, G., P'erez, I., & Zurita, A. 2010, Multiwavelength study of the star-formation in the bar of NGC 2903, A&A, 521, A8   DOI
5 Renaud, F., Bournaud, F., Kraljic, K., et al. 2014, Starbursts triggered by intergalactic tides andinterstellar compressive turbulence., MNRAS, 442, L33   DOI
6 Stilp, A. M., Dalcanton, J. J., Warren, S. R., et al. 2013, Global H I Kinematics in Dwarf Galaxies, ApJ, 765, 136   DOI
7 Tamburro, D., Rix, H.-W., Leroy, A. K., et al. 2009, What is Driving the H I Velocity Dispersion?, AJ, 137, 4424   DOI
8 Walter, F., Brinks, E., de Blok, W. J. G., et al. 2008, THINGS: The H I Nearby Galaxy Survey, AJ, 136, 2563   DOI
9 Wang, J., Koribalski, B. S., Serra, P., et al. 2016, New lessons from the H I size-mass relation of galaxies, MNRAS, 460, 2143   DOI
10 Wenger, M., Ochsenbein, F., Egret, D., et al. 2000, The SIMBAD astronomical database. The CDS reference database for astronomical objects, A&AS, 143, 9   DOI
11 Yadav, J., Das, M., Patra, N. N., et al. 2021, Comparing the Inner and Outer Star-forming Complexes in the Nearby Spiral Galaxies NGC 628, NGC 5457, and NGC 6946 Using UVIT Observations, ApJ, 914, 54   DOI
12 Clemens, M. S., Alexander, P., & Green, D. A. 2000, Ram-pressure stripping of the interstellar medium in NGC 4485, MNRAS, 312, 236   DOI
13 Krumholz, M. R. 2012, Star Formation in Atomic Gas, ApJ, 759, 9   DOI
14 Das, M., McGaugh, S. S., Ianjamasimanana, R., et al. 2020, Tracing the Dynamical Mass in Galaxy Disks Using H I Velocity Dispersion and Its Implications for the Dark Matter Distribution in Galaxies, ApJ, 889, 10   DOI
15 Binney, J. 1992, Warps., ARA&A, 30, 51   DOI
16 Bosma, A. 1978, The distribution and kinematics of neutral hydrogen in spiral galaxies of various morphological types, PhD thesis, University of Groningen, Netherlands
17 Bournaud, F., Chapon, D., Teyssier, R., et al. 2011, Hydrodynamics of High-redshift Galaxy Collisions: From Gasrich Disks to Dispersion-dominated Mergers and Compact Spheroids, ApJ, 730, 4   DOI
18 Cignoni, M., Sacchi, E., Aloisi, A., et al. 2018, Star Formation Histories of the LEGUS Dwarf Galaxies. I. Recent History of NGC 1705, NGC 4449, and Holmberg II, ApJ, 856, 62   DOI
19 Agertz, O., Lake, G., Teyssier, R., et al. 2009, Large-scale galactic turbulence: can self-gravity drive the observed HI velocity dispersions?, MNRAS, 392, 294   DOI
20 Bacchini, C., Fraternali, F., Iorio, G., et al. 2020, Evidence for supernova feedback sustaining gas turbulence in nearby star-forming galaxies, A&A, 641, A70   DOI
21 Davies, R., Forster Schreiber, N. M., Cresci, G., et al. 2011, How Well Can We Measure the Intrinsic Velocity Dispersion of Distant Disk Galaxies?, ApJ, 741, 69   DOI
22 de Blok, W. J. G., Walter, F., Brinks, E., et al. 2008, High-Resolution Rotation Curves and Galaxy Mass Models from THINGS, AJ, 136, 2648   DOI
23 Dewdney, P. E., Hall, P. J., Schilizzi, R. T., et al. 2009, The Square Kilometre Array, IEEE Proceedings, 97, 1482   DOI
24 Faridani, S., Floer, L., Kerp, J., et al. 2014, H I observations of three compact high-velocity clouds around the Milky Way, A&A, 563, A99   DOI
25 Heiles, C. 1979, H I shells and supershells, ApJ, 229, 533   DOI
26 Hunter, D. A., van Woerden, H., & Gallagher, J. S. 1999, Neutral Hydrogen and Star Formation in the Irregular Galaxy NGC 4449, AJ, 118, 2184   DOI
27 Hunter, D. A., Ficut-Vicas, D., Ashley, T., et al., 2012, Little Things, AJ, 144, 134   DOI
28 Krumholz, M. R., Burkhart, B., Forbes, J. C., et al. 2018, A unified model for galactic discs: star formation, turbulence driving, and mass transport, MNRAS, 477, 2716   DOI
29 Ianjamasimanana, R., de Blok, W. J. G., Walter, F., et al. 2012, The Shapes of the H I Velocity Profiles of the THINGS Galaxies, AJ, 144, 96   DOI
30 Ianjamasimanana, R., de Blok, W. J. G., Walter, F., et al. 2015, The Radial Variation of H I Velocity Dispersions in Dwarfs and Spirals, AJ, 150, 47   DOI
31 Mogotsi, K. M., de Blok, W. J. G., Cald'u-Primo, A., et al. 2016, H I and CO Velocity Dispersions in Nearby Galaxies, AJ, 151, 15   DOI
32 Ashley, T., Simpson, C. E., Elmegreen, B. G., et al. 2017, The HI Chronicles of LITTLE THINGS BCDs. III. Gas Clouds in and around Mrk 178, VII Zw 403, and NGC 3738, AJ, 153, 132   DOI
33 Krumholz, M. R., Bate, M. R., Arce, H. G., et al. 2014, Star Cluster Formation and Feedback, Protostars and Planets VI, Tucson: University of Arizona Press, 243
34 Boomsma, R., Oosterloo, T. A., Fraternali, F., et al. 2008, HI holes and high-velocity clouds in the spiral galaxy NGC 6946, A&A, 490, 555   DOI
35 Cigan, P., Young, L., Cormier, D., et al. 2016, Herschel Spectroscopic Observations of Little Things Dwarf Galaxies, AJ, 151, 14   DOI
36 Dale, J. E., Kruijssen, J. M. D., & Longmore, S. N. 2019, The dynamical evolution of molecular clouds near the Galactic Centre - III. Tidally induced star formation in protocluster clouds, MNRAS, 486, 3307   DOI
37 de Blok, W. J. G., & Walter, F. 2006, The Stellar Population and Interstellar Medium in NGC 6822, AJ, 131, 343   DOI
38 Dove, J. B., & Shull, J. M. 1994, Photoionization of Disk Galaxies: an Explanation of the Sharp Edges in the H i Distribution, ApJ, 423, 196   DOI
39 Hunter, L. C., van Zee, L., McQuinn, K. B. W., et al. 2022, Determining the Timescale over Which Stellar Feedback Drives Turbulence in the Interstellar Medium: A Study of Four Nearby Dwarf Irregular Galaxies, AJ, 163, 132   DOI
40 Hony, S., Gouliermis, D. A., Galliano, F., et al. 2015, Star formation rates from young-star counts and the structure of the ISM across the NGC 346/N66 complex in the SMC, MNRAS, 448, 1847   DOI
41 Maloney, P. 1993, Sharp Edges to Neutral Hydrogen Disks in Galaxies and the Extragalactic Radiation Field, ApJ, 414, 41   DOI
42 Oh, S.-H., Hunter, D. A., Brinks, E., et al. 2015, High-resolution Mass Models of Dwarf Galaxies from LITTLE THINGS, AJ, 149, 180   DOI
43 Patra, N. N. 2020, H I scale height in dwarf galaxies, MNRAS, 495, 2867   DOI
44 Zwaan, M. A., Meyer, M. J., Staveley-Smith, L., et al. 2005, The HIPASS catalogue: ΩHI and environmental effects on the HI mass function of galaxies, MNRAS, 359, L30   DOI
45 Saponara, J., Koribalski, B. S., Patra, N. N., et al. 2020, New HI observations of KK 69. Is KK 69 a dwarf galaxy in transition?, Ap&SS, 365, 111   DOI
46 Vollmer, B., Balkowski, C., Cayatte, V., et al. 2004, NGC 4569: Recent evidence for a past ram pressure stripping event, A&A, 419, 35   DOI
47 Warren, S. R., Skillman, E. D., Stilp, A. M., et al. 2012, Tracing Cold H I Gas in nearby, Low-mass Galaxies, ApJ, 757, 84   DOI