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The SAURON project - XVIII: the integrated UV-line-strength relations of early-type galaxies

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The SAURON project - XVIII : the integrated UV-line-strength relations of early-type galaxies. / Bureau, Martin; Jeong, Hyunjin; Yi, Sukyoung K.; Schawinski, Kevin; Houghton, Ryan C. W.; Davies, Roger L.; Bacon, Roland; Cappellari, Michele; De Zeeuw, P. Tim; Emsellem, Eric; Falcon-Barroso, Jesus; Krajnović, Davor; Kuntschner, Harald; Mcdermid, Richard M.; Peletier, Reynier F.; Sarzi, Marc; Sohn, Young-jong; Thomas, Daniel; Van Den Bosch, Remco C. E.; Van De Ven, Glenn.

In: Monthly Notices of the Royal Astronomical Society, Vol. 414, No. 3, 2011, p. 1887-1902.

Research output: Contribution to journalArticle

Harvard

Bureau, M, Jeong, H, Yi, SK, Schawinski, K, Houghton, RCW, Davies, RL, Bacon, R, Cappellari, M, De Zeeuw, PT, Emsellem, E, Falcon-Barroso, J, Krajnović, D, Kuntschner, H, Mcdermid, RM, Peletier, RF, Sarzi, M, Sohn, Y, Thomas, D, Van Den Bosch, RCE & Van De Ven, G 2011, 'The SAURON project - XVIII: the integrated UV-line-strength relations of early-type galaxies', Monthly Notices of the Royal Astronomical Society, vol. 414, no. 3, pp. 1887-1902. https://doi.org/10.1111/j.1365-2966.2011.18489.x

APA

Bureau, M., Jeong, H., Yi, S. K., Schawinski, K., Houghton, R. C. W., Davies, R. L., Bacon, R., Cappellari, M., De Zeeuw, P. T., Emsellem, E., Falcon-Barroso, J., Krajnović, D., Kuntschner, H., Mcdermid, R. M., Peletier, R. F., Sarzi, M., Sohn, Y., Thomas, D., Van Den Bosch, R. C. E., & Van De Ven, G. (2011). The SAURON project - XVIII: the integrated UV-line-strength relations of early-type galaxies. Monthly Notices of the Royal Astronomical Society, 414(3), 1887-1902. https://doi.org/10.1111/j.1365-2966.2011.18489.x

Vancouver

Bureau M, Jeong H, Yi SK, Schawinski K, Houghton RCW, Davies RL et al. The SAURON project - XVIII: the integrated UV-line-strength relations of early-type galaxies. Monthly Notices of the Royal Astronomical Society. 2011;414(3):1887-1902. https://doi.org/10.1111/j.1365-2966.2011.18489.x

Author

Bureau, Martin ; Jeong, Hyunjin ; Yi, Sukyoung K. ; Schawinski, Kevin ; Houghton, Ryan C. W. ; Davies, Roger L. ; Bacon, Roland ; Cappellari, Michele ; De Zeeuw, P. Tim ; Emsellem, Eric ; Falcon-Barroso, Jesus ; Krajnović, Davor ; Kuntschner, Harald ; Mcdermid, Richard M. ; Peletier, Reynier F. ; Sarzi, Marc ; Sohn, Young-jong ; Thomas, Daniel ; Van Den Bosch, Remco C. E. ; Van De Ven, Glenn. / The SAURON project - XVIII : the integrated UV-line-strength relations of early-type galaxies. In: Monthly Notices of the Royal Astronomical Society. 2011 ; Vol. 414, No. 3. pp. 1887-1902.

Bibtex

@article{d3ff2e3bff45422cba3d1710e9b2ca9c,
title = "The SAURON project - XVIII: the integrated UV-line-strength relations of early-type galaxies",
abstract = "Using far-ultraviolet (FUV) and near-ultraviolet (NUV) photometry from guest investigator programmes on the Galaxy Evolution Explorer (GALEX) satellite, optical photometry from the MDM Observatory and optical integral-field spectroscopy from SAURON, we explore the UV–line-strength relations of the 48 nearby early-type galaxies in the SAURON sample. Identical apertures are used for all quantities, avoiding aperture mismatch. We show that galaxies with purely old stellar populations show well-defined correlations of the integrated FUV −V and FUV − NUV colours with the integrated Mg b and Hβ absorption line-strength indices, strongest for FUV − NUV. Correlations with the NUV −V colour, Fe5015 index and stellar velocity dispersion σ are much weaker. These correlations put stringent constraints on the origin of the UV-upturn phenomenon in early-type galaxies and highlight its dependence on age and metallicity. In particular, despite recent debate, we recover the negative correlation between FUV −V colour and Mg line strength originally publicized by Burstein et al., which we refer to as the {\textquoteleft}Burstein relation{\textquoteright}, suggesting a positive dependence of the UV upturn on metallicity. We argue that the scatter in the correlations is real and present mild evidence that a strong UV excess is preferentially present in slow-rotating galaxies. We also demonstrate that most outliers in the correlations are galaxies with current or recent star formation, some at very low levels. We believe that this sensitivity to weak star formation, afforded by the deep and varied data available for the SAURON sample, explains why our results are occasionally at odds with other recent but shallower surveys. This is supported by the analysis of a large, carefully crafted sample of more distant early-type galaxies from the Sloan Digital Sky Survey (SDSS), more easily comparable with current and future large surveys. ",
author = "Martin Bureau and Hyunjin Jeong and Yi, {Sukyoung K.} and Kevin Schawinski and Houghton, {Ryan C. W.} and Davies, {Roger L.} and Roland Bacon and Michele Cappellari and {De Zeeuw}, {P. Tim} and Eric Emsellem and Jesus Falcon-Barroso and Davor Krajnovi{\'c} and Harald Kuntschner and Mcdermid, {Richard M.} and Peletier, {Reynier F.} and Marc Sarzi and Young-jong Sohn and Daniel Thomas and {Van Den Bosch}, {Remco C. E.} and {Van De Ven}, Glenn",
note = "2011 The Authors Monthly Notices of the Royal Astronomical Society {\textcopyright} 2011 RAS",
year = "2011",
doi = "10.1111/j.1365-2966.2011.18489.x",
language = "English",
volume = "414",
pages = "1887--1902",
journal = "MNRAS",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "3",

}

RIS

TY - JOUR

T1 - The SAURON project - XVIII

T2 - the integrated UV-line-strength relations of early-type galaxies

AU - Bureau, Martin

AU - Jeong, Hyunjin

AU - Yi, Sukyoung K.

AU - Schawinski, Kevin

AU - Houghton, Ryan C. W.

AU - Davies, Roger L.

AU - Bacon, Roland

AU - Cappellari, Michele

AU - De Zeeuw, P. Tim

AU - Emsellem, Eric

AU - Falcon-Barroso, Jesus

AU - Krajnović, Davor

AU - Kuntschner, Harald

AU - Mcdermid, Richard M.

AU - Peletier, Reynier F.

AU - Sarzi, Marc

AU - Sohn, Young-jong

AU - Thomas, Daniel

AU - Van Den Bosch, Remco C. E.

AU - Van De Ven, Glenn

N1 - 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS

PY - 2011

Y1 - 2011

N2 - Using far-ultraviolet (FUV) and near-ultraviolet (NUV) photometry from guest investigator programmes on the Galaxy Evolution Explorer (GALEX) satellite, optical photometry from the MDM Observatory and optical integral-field spectroscopy from SAURON, we explore the UV–line-strength relations of the 48 nearby early-type galaxies in the SAURON sample. Identical apertures are used for all quantities, avoiding aperture mismatch. We show that galaxies with purely old stellar populations show well-defined correlations of the integrated FUV −V and FUV − NUV colours with the integrated Mg b and Hβ absorption line-strength indices, strongest for FUV − NUV. Correlations with the NUV −V colour, Fe5015 index and stellar velocity dispersion σ are much weaker. These correlations put stringent constraints on the origin of the UV-upturn phenomenon in early-type galaxies and highlight its dependence on age and metallicity. In particular, despite recent debate, we recover the negative correlation between FUV −V colour and Mg line strength originally publicized by Burstein et al., which we refer to as the ‘Burstein relation’, suggesting a positive dependence of the UV upturn on metallicity. We argue that the scatter in the correlations is real and present mild evidence that a strong UV excess is preferentially present in slow-rotating galaxies. We also demonstrate that most outliers in the correlations are galaxies with current or recent star formation, some at very low levels. We believe that this sensitivity to weak star formation, afforded by the deep and varied data available for the SAURON sample, explains why our results are occasionally at odds with other recent but shallower surveys. This is supported by the analysis of a large, carefully crafted sample of more distant early-type galaxies from the Sloan Digital Sky Survey (SDSS), more easily comparable with current and future large surveys.

AB - Using far-ultraviolet (FUV) and near-ultraviolet (NUV) photometry from guest investigator programmes on the Galaxy Evolution Explorer (GALEX) satellite, optical photometry from the MDM Observatory and optical integral-field spectroscopy from SAURON, we explore the UV–line-strength relations of the 48 nearby early-type galaxies in the SAURON sample. Identical apertures are used for all quantities, avoiding aperture mismatch. We show that galaxies with purely old stellar populations show well-defined correlations of the integrated FUV −V and FUV − NUV colours with the integrated Mg b and Hβ absorption line-strength indices, strongest for FUV − NUV. Correlations with the NUV −V colour, Fe5015 index and stellar velocity dispersion σ are much weaker. These correlations put stringent constraints on the origin of the UV-upturn phenomenon in early-type galaxies and highlight its dependence on age and metallicity. In particular, despite recent debate, we recover the negative correlation between FUV −V colour and Mg line strength originally publicized by Burstein et al., which we refer to as the ‘Burstein relation’, suggesting a positive dependence of the UV upturn on metallicity. We argue that the scatter in the correlations is real and present mild evidence that a strong UV excess is preferentially present in slow-rotating galaxies. We also demonstrate that most outliers in the correlations are galaxies with current or recent star formation, some at very low levels. We believe that this sensitivity to weak star formation, afforded by the deep and varied data available for the SAURON sample, explains why our results are occasionally at odds with other recent but shallower surveys. This is supported by the analysis of a large, carefully crafted sample of more distant early-type galaxies from the Sloan Digital Sky Survey (SDSS), more easily comparable with current and future large surveys.

U2 - 10.1111/j.1365-2966.2011.18489.x

DO - 10.1111/j.1365-2966.2011.18489.x

M3 - Article

VL - 414

SP - 1887

EP - 1902

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 3

ER -

ID: 1518666