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Title: SDSS IV MaNGA—Rotation Velocity Lags in the Extraplanar Ionized Gas from MaNGA Observations of Edge-on Galaxies

Abstract

We present a study of the kinematics of the extraplanar ionized gas around several dozen galaxies observed by the Mapping of Nearby Galaxies at the Apache Point Observatory (MaNGA) survey. We considered a sample of 67 edge-on galaxies out of more than 1400 extragalactic targets observed by MaNGA, in which we found 25 galaxies (or 37%) with regular lagging of the rotation curve at large distances from the galactic midplane. We model the observed H α emission velocity fields in the galaxies, taking projection effects and a simple model for the dust extinction into account. We show that the vertical lag of the rotation curve is necessary in the modeling, and estimate the lag amplitude in the galaxies. We find no correlation between the lag and the star formation rate in the galaxies. At the same time, we report a correlation between the lag and the galactic stellar mass, central stellar velocity dispersion, and axial ratio of the light distribution. These correlations suggest a possible higher ratio of infalling-to-local gas in early-type disk galaxies or a connection between lags and the possible presence of hot gaseous halos, which may be more prevalent in more massive galaxies. These results again demonstratemore » that observations of extraplanar gas can serve as a potential probe for accretion of gas.« less

Authors:
; ;  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9]
  1. Apache Point Observatory and New Mexico State University, Sunspot, NM 88349 (United States)
  2. Department of Astronomy, New Mexico State University, Las Cruces, NM 88003 (United States)
  3. Department of Astronomy, University of Washington, Seattle, WA 98195 (United States)
  4. Departamento de Física, CCNE, Universidade Federal de Santa Maria, Av. Roraima, 1000-97105-900, Santa Maria, RS (Brazil)
  5. Institut Utinam, CNRS UMR 6213, Université de Franche-Comté, OSU THETA Franche-Comté-Bourgogne, Observatoire de Besançon, BP 1615, F-25010 Besançon Cedex (France)
  6. Department of Astronomy, University of Wisconsin-Madison, Madison, WI 53706 (United States)
  7. Max-Planck Institute for Astrophysics, Karl-Schwarzschild-Str 1, Garching, D-85748 (Germany)
  8. Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX (United Kingdom)
  9. Department of Physics and Astronomy, Johns Hopkins University, Bloomberg Center, 3400 North Charles Street, Baltimore, MD 21218 (United States)
Publication Date:
OSTI Identifier:
22663691
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 839; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AMPLITUDES; AXIAL RATIO; CORRELATIONS; DISPERSIONS; DISTRIBUTION; DUSTS; EMISSION; GALAXIES; GALAXY CLUSTERS; ISOCHRONOUS CYCLOTRONS; MASS; ROTATION; SIMULATION; STARS

Citation Formats

Bizyaev, D., Pan, K., Brinkmann, J., Walterbos, R. A. M., Yoachim, P., Riffel, R. A., Fernández-Trincado, J. G., Diamond-Stanic, A. M., Jones, A., Thomas, D., and Cleary, J. SDSS IV MaNGA—Rotation Velocity Lags in the Extraplanar Ionized Gas from MaNGA Observations of Edge-on Galaxies. United States: N. p., 2017. Web. doi:10.3847/1538-4357/AA6979.
Bizyaev, D., Pan, K., Brinkmann, J., Walterbos, R. A. M., Yoachim, P., Riffel, R. A., Fernández-Trincado, J. G., Diamond-Stanic, A. M., Jones, A., Thomas, D., & Cleary, J. SDSS IV MaNGA—Rotation Velocity Lags in the Extraplanar Ionized Gas from MaNGA Observations of Edge-on Galaxies. United States. doi:10.3847/1538-4357/AA6979.
Bizyaev, D., Pan, K., Brinkmann, J., Walterbos, R. A. M., Yoachim, P., Riffel, R. A., Fernández-Trincado, J. G., Diamond-Stanic, A. M., Jones, A., Thomas, D., and Cleary, J. Thu . "SDSS IV MaNGA—Rotation Velocity Lags in the Extraplanar Ionized Gas from MaNGA Observations of Edge-on Galaxies". United States. doi:10.3847/1538-4357/AA6979.
@article{osti_22663691,
title = {SDSS IV MaNGA—Rotation Velocity Lags in the Extraplanar Ionized Gas from MaNGA Observations of Edge-on Galaxies},
author = {Bizyaev, D. and Pan, K. and Brinkmann, J. and Walterbos, R. A. M. and Yoachim, P. and Riffel, R. A. and Fernández-Trincado, J. G. and Diamond-Stanic, A. M. and Jones, A. and Thomas, D. and Cleary, J.},
abstractNote = {We present a study of the kinematics of the extraplanar ionized gas around several dozen galaxies observed by the Mapping of Nearby Galaxies at the Apache Point Observatory (MaNGA) survey. We considered a sample of 67 edge-on galaxies out of more than 1400 extragalactic targets observed by MaNGA, in which we found 25 galaxies (or 37%) with regular lagging of the rotation curve at large distances from the galactic midplane. We model the observed H α emission velocity fields in the galaxies, taking projection effects and a simple model for the dust extinction into account. We show that the vertical lag of the rotation curve is necessary in the modeling, and estimate the lag amplitude in the galaxies. We find no correlation between the lag and the star formation rate in the galaxies. At the same time, we report a correlation between the lag and the galactic stellar mass, central stellar velocity dispersion, and axial ratio of the light distribution. These correlations suggest a possible higher ratio of infalling-to-local gas in early-type disk galaxies or a connection between lags and the possible presence of hot gaseous halos, which may be more prevalent in more massive galaxies. These results again demonstrate that observations of extraplanar gas can serve as a potential probe for accretion of gas.},
doi = {10.3847/1538-4357/AA6979},
journal = {Astrophysical Journal},
number = 2,
volume = 839,
place = {United States},
year = {Thu Apr 20 00:00:00 EDT 2017},
month = {Thu Apr 20 00:00:00 EDT 2017}
}