SDSS-IV MaNGA: A SERENDIPITOUS OBSERVATION of A POTENTIAL GAS ACCRETION EVENT

Edmond Cheung, David V. Stark, Song Huang, Kate H.R. Rubin, Lihwai Lin, Christy Tremonti, Kai Zhang, Renbin Yan, Dmitry Bizyaev, Médéric Boquien, Joel R. Brownstein, Niv Drory, Joseph D. Gelfand, Johan H. Knapen, Roberto Maiolino, Olena Malanushenko, Karen L. Masters, Michael R. Merrifield, Zach Pace, Kaike PanRogemar A. Riffel, Alexandre Roman-Lopes, Wiphu Rujopakarn, Donald P. Schneider, John P. Stott, Daniel Thomas, Anne Marie Weijmans

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The nature of warm, ionized gas outside of galaxies may illuminate several key galaxy evolutionary processes. A serendipitous observation by the MaNGA survey has revealed a large, asymmetric Hα complex with no optical counterpart that extends ≈8″ (≈6.3 kpc) beyond the effective radius of a dusty, starbursting galaxy. This Hα extension is approximately three times the effective radius of the host galaxy and displays a tail-like morphology. We analyze its gas-phase metallicities, gaseous kinematics, and emission-line ratios and discuss whether this Hα extension could be diffuse ionized gas, a gas accretion event, or something else. We find that this warm, ionized gas structure is most consistent with gas accretion through recycled wind material, which could be an important process that regulates the low-mass end of the galaxy stellar mass function.

Original languageEnglish (US)
Article number182
JournalAstrophysical Journal
Volume832
Issue number2
DOIs
StatePublished - Dec 1 2016

Fingerprint

accretion
galaxies
ionized gases
gases
gas
radii
stellar mass
metallicity
kinematics
vapor phases

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Cheung, E., Stark, D. V., Huang, S., Rubin, K. H. R., Lin, L., Tremonti, C., ... Weijmans, A. M. (2016). SDSS-IV MaNGA: A SERENDIPITOUS OBSERVATION of A POTENTIAL GAS ACCRETION EVENT. Astrophysical Journal, 832(2), [182]. https://doi.org/10.3847/0004-637X/832/2/182
Cheung, Edmond ; Stark, David V. ; Huang, Song ; Rubin, Kate H.R. ; Lin, Lihwai ; Tremonti, Christy ; Zhang, Kai ; Yan, Renbin ; Bizyaev, Dmitry ; Boquien, Médéric ; Brownstein, Joel R. ; Drory, Niv ; Gelfand, Joseph D. ; Knapen, Johan H. ; Maiolino, Roberto ; Malanushenko, Olena ; Masters, Karen L. ; Merrifield, Michael R. ; Pace, Zach ; Pan, Kaike ; Riffel, Rogemar A. ; Roman-Lopes, Alexandre ; Rujopakarn, Wiphu ; Schneider, Donald P. ; Stott, John P. ; Thomas, Daniel ; Weijmans, Anne Marie. / SDSS-IV MaNGA : A SERENDIPITOUS OBSERVATION of A POTENTIAL GAS ACCRETION EVENT. In: Astrophysical Journal. 2016 ; Vol. 832, No. 2.
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abstract = "The nature of warm, ionized gas outside of galaxies may illuminate several key galaxy evolutionary processes. A serendipitous observation by the MaNGA survey has revealed a large, asymmetric Hα complex with no optical counterpart that extends ≈8″ (≈6.3 kpc) beyond the effective radius of a dusty, starbursting galaxy. This Hα extension is approximately three times the effective radius of the host galaxy and displays a tail-like morphology. We analyze its gas-phase metallicities, gaseous kinematics, and emission-line ratios and discuss whether this Hα extension could be diffuse ionized gas, a gas accretion event, or something else. We find that this warm, ionized gas structure is most consistent with gas accretion through recycled wind material, which could be an important process that regulates the low-mass end of the galaxy stellar mass function.",
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Cheung, E, Stark, DV, Huang, S, Rubin, KHR, Lin, L, Tremonti, C, Zhang, K, Yan, R, Bizyaev, D, Boquien, M, Brownstein, JR, Drory, N, Gelfand, JD, Knapen, JH, Maiolino, R, Malanushenko, O, Masters, KL, Merrifield, MR, Pace, Z, Pan, K, Riffel, RA, Roman-Lopes, A, Rujopakarn, W, Schneider, DP, Stott, JP, Thomas, D & Weijmans, AM 2016, 'SDSS-IV MaNGA: A SERENDIPITOUS OBSERVATION of A POTENTIAL GAS ACCRETION EVENT', Astrophysical Journal, vol. 832, no. 2, 182. https://doi.org/10.3847/0004-637X/832/2/182

SDSS-IV MaNGA : A SERENDIPITOUS OBSERVATION of A POTENTIAL GAS ACCRETION EVENT. / Cheung, Edmond; Stark, David V.; Huang, Song; Rubin, Kate H.R.; Lin, Lihwai; Tremonti, Christy; Zhang, Kai; Yan, Renbin; Bizyaev, Dmitry; Boquien, Médéric; Brownstein, Joel R.; Drory, Niv; Gelfand, Joseph D.; Knapen, Johan H.; Maiolino, Roberto; Malanushenko, Olena; Masters, Karen L.; Merrifield, Michael R.; Pace, Zach; Pan, Kaike; Riffel, Rogemar A.; Roman-Lopes, Alexandre; Rujopakarn, Wiphu; Schneider, Donald P.; Stott, John P.; Thomas, Daniel; Weijmans, Anne Marie.

In: Astrophysical Journal, Vol. 832, No. 2, 182, 01.12.2016.

Research output: Contribution to journalArticle

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AU - Cheung, Edmond

AU - Stark, David V.

AU - Huang, Song

AU - Rubin, Kate H.R.

AU - Lin, Lihwai

AU - Tremonti, Christy

AU - Zhang, Kai

AU - Yan, Renbin

AU - Bizyaev, Dmitry

AU - Boquien, Médéric

AU - Brownstein, Joel R.

AU - Drory, Niv

AU - Gelfand, Joseph D.

AU - Knapen, Johan H.

AU - Maiolino, Roberto

AU - Malanushenko, Olena

AU - Masters, Karen L.

AU - Merrifield, Michael R.

AU - Pace, Zach

AU - Pan, Kaike

AU - Riffel, Rogemar A.

AU - Roman-Lopes, Alexandre

AU - Rujopakarn, Wiphu

AU - Schneider, Donald P.

AU - Stott, John P.

AU - Thomas, Daniel

AU - Weijmans, Anne Marie

PY - 2016/12/1

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