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P-MaNGA: gradients in recent star formation histories as diagnostics for galaxy growth and death

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P-MaNGA : gradients in recent star formation histories as diagnostics for galaxy growth and death. / Li, Cheng; Wang, Enci; Lin, Lin; Bershady, Matthew A.; Bundy, Kevin; Tremonti, Christy A.; Xiao, Ting; Yan, Renbin; Bizyaev, Dmitry; Blanton, Michael; Cales, Sabrina; Cherinka, Brian; Cheung, Edmond; Drory, Niv; Emsellem, Eric; Fu, Hai; Gelfand, Joseph; Law, David R.; Lin, Lihwai; MacDonald, Nick; Maraston, Claudia; Masters, Karen L.; Merrifield, Michael R.; Pan, Kaike; Sanchez, S. F.; Schneider, Donald P.; Thomas, Daniel; Wake, David; Wang, Lixin; Weijmans, Anne-Marie; Wilkinson, David; Yoachim, Peter; Zhang, Kai; Zheng, Tiantian.

In: The Astrophysical Journal, Vol. 804, No. 2, 11.05.2015.

Research output: Contribution to journalArticlepeer-review

Harvard

Li, C, Wang, E, Lin, L, Bershady, MA, Bundy, K, Tremonti, CA, Xiao, T, Yan, R, Bizyaev, D, Blanton, M, Cales, S, Cherinka, B, Cheung, E, Drory, N, Emsellem, E, Fu, H, Gelfand, J, Law, DR, Lin, L, MacDonald, N, Maraston, C, Masters, KL, Merrifield, MR, Pan, K, Sanchez, SF, Schneider, DP, Thomas, D, Wake, D, Wang, L, Weijmans, A-M, Wilkinson, D, Yoachim, P, Zhang, K & Zheng, T 2015, 'P-MaNGA: gradients in recent star formation histories as diagnostics for galaxy growth and death', The Astrophysical Journal, vol. 804, no. 2. https://doi.org/10.1088/0004-637X/804/2/125

APA

Li, C., Wang, E., Lin, L., Bershady, M. A., Bundy, K., Tremonti, C. A., Xiao, T., Yan, R., Bizyaev, D., Blanton, M., Cales, S., Cherinka, B., Cheung, E., Drory, N., Emsellem, E., Fu, H., Gelfand, J., Law, D. R., Lin, L., ... Zheng, T. (2015). P-MaNGA: gradients in recent star formation histories as diagnostics for galaxy growth and death. The Astrophysical Journal, 804(2). https://doi.org/10.1088/0004-637X/804/2/125

Vancouver

Li C, Wang E, Lin L, Bershady MA, Bundy K, Tremonti CA et al. P-MaNGA: gradients in recent star formation histories as diagnostics for galaxy growth and death. The Astrophysical Journal. 2015 May 11;804(2). https://doi.org/10.1088/0004-637X/804/2/125

Author

Li, Cheng ; Wang, Enci ; Lin, Lin ; Bershady, Matthew A. ; Bundy, Kevin ; Tremonti, Christy A. ; Xiao, Ting ; Yan, Renbin ; Bizyaev, Dmitry ; Blanton, Michael ; Cales, Sabrina ; Cherinka, Brian ; Cheung, Edmond ; Drory, Niv ; Emsellem, Eric ; Fu, Hai ; Gelfand, Joseph ; Law, David R. ; Lin, Lihwai ; MacDonald, Nick ; Maraston, Claudia ; Masters, Karen L. ; Merrifield, Michael R. ; Pan, Kaike ; Sanchez, S. F. ; Schneider, Donald P. ; Thomas, Daniel ; Wake, David ; Wang, Lixin ; Weijmans, Anne-Marie ; Wilkinson, David ; Yoachim, Peter ; Zhang, Kai ; Zheng, Tiantian. / P-MaNGA : gradients in recent star formation histories as diagnostics for galaxy growth and death. In: The Astrophysical Journal. 2015 ; Vol. 804, No. 2.

Bibtex

@article{4a22f7d08ef942c79d572c51496e0a4e,
title = "P-MaNGA: gradients in recent star formation histories as diagnostics for galaxy growth and death",
abstract = "We present an analysis of the data produced by the MaNGA prototype run (P-MaNGA), aiming to test how the radial gradients in recent star formation histories, as indicated by the 4000AA-break (D4000), Hdelta absorption (EW(Hd_A)) and Halpha emission (EW(Ha)) indices, can be useful for understanding disk growth and star formation cessation in local galaxies. We classify 12 galaxies observed on two P-MaNGA plates as either centrally quiescent (CQ) or centrally star-forming (CSF), according to whether D4000 measured in the central spaxel of each datacube exceeds 1.6. For each galaxy we generate both 2D maps and radial profiles of D4000, EW(Hd_A) and EW(Ha). We find that CSF galaxies generally show very weak or no radial variation in these diagnostics. In contrast, CQ galaxies present significant radial gradients, in the sense that D4000 decreases, while both EW(Hd_A) and EW(Ha) increase from the galactic center outward. The outer regions of the galaxies show greater scatter on diagrams relating the three parameters than their central parts. In particular, the clear separation between centrally-measured quiescent and star-forming galaxies in these diagnostic planes is largely filled in by the outer parts of galaxies whose global colors place them in the green valley, supporting the idea that the green valley represents a transition between blue-cloud and red-sequence phases, at least in our small sample. These results are consistent with a picture in which the cessation of star formation propagates from the center of a galaxy outwards as it moves to the red sequence.",
keywords = "astro-ph.GA, astro-ph.CO, WNU, RCUK, STFC, ST/M001156/1",
author = "Cheng Li and Enci Wang and Lin Lin and Bershady, {Matthew A.} and Kevin Bundy and Tremonti, {Christy A.} and Ting Xiao and Renbin Yan and Dmitry Bizyaev and Michael Blanton and Sabrina Cales and Brian Cherinka and Edmond Cheung and Niv Drory and Eric Emsellem and Hai Fu and Joseph Gelfand and Law, {David R.} and Lihwai Lin and Nick MacDonald and Claudia Maraston and Masters, {Karen L.} and Merrifield, {Michael R.} and Kaike Pan and Sanchez, {S. F.} and Schneider, {Donald P.} and Daniel Thomas and David Wake and Lixin Wang and Anne-Marie Weijmans and David Wilkinson and Peter Yoachim and Kai Zhang and Tiantian Zheng",
note = "Accepted/In press20 Feb 2015. Published 2015.05.11",
year = "2015",
month = may,
day = "11",
doi = "10.1088/0004-637X/804/2/125",
language = "English",
volume = "804",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing",
number = "2",

}

RIS

TY - JOUR

T1 - P-MaNGA

T2 - gradients in recent star formation histories as diagnostics for galaxy growth and death

AU - Li, Cheng

AU - Wang, Enci

AU - Lin, Lin

AU - Bershady, Matthew A.

AU - Bundy, Kevin

AU - Tremonti, Christy A.

AU - Xiao, Ting

AU - Yan, Renbin

AU - Bizyaev, Dmitry

AU - Blanton, Michael

AU - Cales, Sabrina

AU - Cherinka, Brian

AU - Cheung, Edmond

AU - Drory, Niv

AU - Emsellem, Eric

AU - Fu, Hai

AU - Gelfand, Joseph

AU - Law, David R.

AU - Lin, Lihwai

AU - MacDonald, Nick

AU - Maraston, Claudia

AU - Masters, Karen L.

AU - Merrifield, Michael R.

AU - Pan, Kaike

AU - Sanchez, S. F.

AU - Schneider, Donald P.

AU - Thomas, Daniel

AU - Wake, David

AU - Wang, Lixin

AU - Weijmans, Anne-Marie

AU - Wilkinson, David

AU - Yoachim, Peter

AU - Zhang, Kai

AU - Zheng, Tiantian

N1 - Accepted/In press20 Feb 2015. Published 2015.05.11

PY - 2015/5/11

Y1 - 2015/5/11

N2 - We present an analysis of the data produced by the MaNGA prototype run (P-MaNGA), aiming to test how the radial gradients in recent star formation histories, as indicated by the 4000AA-break (D4000), Hdelta absorption (EW(Hd_A)) and Halpha emission (EW(Ha)) indices, can be useful for understanding disk growth and star formation cessation in local galaxies. We classify 12 galaxies observed on two P-MaNGA plates as either centrally quiescent (CQ) or centrally star-forming (CSF), according to whether D4000 measured in the central spaxel of each datacube exceeds 1.6. For each galaxy we generate both 2D maps and radial profiles of D4000, EW(Hd_A) and EW(Ha). We find that CSF galaxies generally show very weak or no radial variation in these diagnostics. In contrast, CQ galaxies present significant radial gradients, in the sense that D4000 decreases, while both EW(Hd_A) and EW(Ha) increase from the galactic center outward. The outer regions of the galaxies show greater scatter on diagrams relating the three parameters than their central parts. In particular, the clear separation between centrally-measured quiescent and star-forming galaxies in these diagnostic planes is largely filled in by the outer parts of galaxies whose global colors place them in the green valley, supporting the idea that the green valley represents a transition between blue-cloud and red-sequence phases, at least in our small sample. These results are consistent with a picture in which the cessation of star formation propagates from the center of a galaxy outwards as it moves to the red sequence.

AB - We present an analysis of the data produced by the MaNGA prototype run (P-MaNGA), aiming to test how the radial gradients in recent star formation histories, as indicated by the 4000AA-break (D4000), Hdelta absorption (EW(Hd_A)) and Halpha emission (EW(Ha)) indices, can be useful for understanding disk growth and star formation cessation in local galaxies. We classify 12 galaxies observed on two P-MaNGA plates as either centrally quiescent (CQ) or centrally star-forming (CSF), according to whether D4000 measured in the central spaxel of each datacube exceeds 1.6. For each galaxy we generate both 2D maps and radial profiles of D4000, EW(Hd_A) and EW(Ha). We find that CSF galaxies generally show very weak or no radial variation in these diagnostics. In contrast, CQ galaxies present significant radial gradients, in the sense that D4000 decreases, while both EW(Hd_A) and EW(Ha) increase from the galactic center outward. The outer regions of the galaxies show greater scatter on diagrams relating the three parameters than their central parts. In particular, the clear separation between centrally-measured quiescent and star-forming galaxies in these diagnostic planes is largely filled in by the outer parts of galaxies whose global colors place them in the green valley, supporting the idea that the green valley represents a transition between blue-cloud and red-sequence phases, at least in our small sample. These results are consistent with a picture in which the cessation of star formation propagates from the center of a galaxy outwards as it moves to the red sequence.

KW - astro-ph.GA

KW - astro-ph.CO

KW - WNU

KW - RCUK

KW - STFC

KW - ST/M001156/1

U2 - 10.1088/0004-637X/804/2/125

DO - 10.1088/0004-637X/804/2/125

M3 - Article

VL - 804

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 2

ER -

ID: 2320853