Advanced search
1 file | 365.34 KB Add to list

The S⁴G perspective on circumstellar dust extinction of asymptotic giant branch stars in M100

Author
Organization
Abstract
We examine the effect of circumstellar dust extinction on the near-IR (NIR) contribution of asymptotic giant branch (AGB) stars in intermediate-age clusters throughout the disk of M100. For our sample of 17AGB-dominated clusters we extract optical-to-mid-IR spectral energy distributions (SEDs) and find that NIR brightness is coupled to the mid-IR dust emission in such a way that a significant reduction of AGB light, of up to 1 mag in the K band, follows from extinction by the dust shell formed during this stage. Since the dust optical depth varies with AGB chemistry (C-rich or O-rich), our results suggest that the contribution of AGB stars to the flux from their host clusters will be closely linked to the metallicity and the progenitor mass of the AGB star, to which dust chemistry and mass-loss rate are sensitive. Our sample of clusters-each the analogue of a similar to 1 Gyr old post-starburst galaxy-has implications within the context of mass and age estimation via SED modeling at high-z: we find that the average similar to 0.5 mag extinction estimated here may be sufficient to reduce the AGB contribution in the (rest-frame) K band from similar to 70%, as predicted in the latest generation of synthesis models, to similar to 35%. Our technique for selecting AGB-dominated clusters in nearby galaxies promises to be effective for discriminating the uncertainties associated with AGB stars in intermediate-age populations that plague age and mass estimation in high-z galaxies.
Keywords
LARGE-MAGELLANIC-CLOUD, MASS-LOSS RETURN, SPITZER-SPACE-TELESCOPE, AGE, STELLAR POPULATIONS, ACTIVE GALACTIC NUCLEI, HIGH-REDSHIFT GALAXIES, EVOLVED STARS, NEARBY GALAXIES, MU-M, OPTICAL-PROPERTIES, galaxies: individual (M100), galaxies: star clusters: general, galaxies:, stellar content, stars: AGB and post-AGB

Downloads

  • The S4G Perspective on Circumstellar Dust Extinction of Asymptotic Giant Branch Stars in M100.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 365.34 KB

Citation

Please use this url to cite or link to this publication:

MLA
van der Wel, Sharon Meidt, et al. “The S4G Perspective on Circumstellar Dust Extinction of Asymptotic Giant Branch Stars in M100.” ASTROPHYSICAL JOURNAL LETTERS, vol. 748, no. 2, 2012.
APA
van der Wel, S. M., Schinnerer, E., Munoz-Mateos, J.-C., Holwerda, B., Ho, L. C., Madore, B. F., … Comeron, S. (2012). The S4G perspective on circumstellar dust extinction of asymptotic giant branch stars in M100. ASTROPHYSICAL JOURNAL LETTERS, 748(2).
Chicago author-date
Wel, Sharon Meidt van der, Eva Schinnerer, Juan-Carlos Munoz-Mateos, Benne Holwerda, Luis C Ho, Barry F Madore, Johan H Knapen, et al. 2012. “The S4G Perspective on Circumstellar Dust Extinction of Asymptotic Giant Branch Stars in M100.” ASTROPHYSICAL JOURNAL LETTERS 748 (2).
Chicago author-date (all authors)
van der Wel, Sharon Meidt, Eva Schinnerer, Juan-Carlos Munoz-Mateos, Benne Holwerda, Luis C Ho, Barry F Madore, Johan H Knapen, Albert Bosma, E Athanassoula, Joannah L Hinz, Kartik Sheth, Michael Regan, Armando Gil de Paz, Karin Menendez-Delmestre, Mark Seibert, Taehyun Kim, Trisha Mizusawa, Dimitri A Gadotti, Eija Laurikainen, Heikki Salo, Jarkko Laine, and Sebastien Comeron. 2012. “The S4G Perspective on Circumstellar Dust Extinction of Asymptotic Giant Branch Stars in M100.” ASTROPHYSICAL JOURNAL LETTERS 748 (2).
Vancouver
1.
van der Wel SM, Schinnerer E, Munoz-Mateos J-C, Holwerda B, Ho LC, Madore BF, et al. The S4G perspective on circumstellar dust extinction of asymptotic giant branch stars in M100. ASTROPHYSICAL JOURNAL LETTERS. 2012;748(2).
IEEE
[1]
S. M. van der Wel et al., “The S4G perspective on circumstellar dust extinction of asymptotic giant branch stars in M100,” ASTROPHYSICAL JOURNAL LETTERS, vol. 748, no. 2, 2012.
@article{8622856,
  abstract     = {We examine the effect of circumstellar dust extinction on the near-IR (NIR) contribution of asymptotic giant branch (AGB) stars in intermediate-age clusters throughout the disk of M100. For our sample of 17AGB-dominated clusters we extract optical-to-mid-IR spectral energy distributions (SEDs) and find that NIR brightness is coupled to the mid-IR dust emission in such a way that a significant reduction of AGB light, of up to 1 mag in the K band, follows from extinction by the dust shell formed during this stage. Since the dust optical depth varies with AGB chemistry (C-rich or O-rich), our results suggest that the contribution of AGB stars to the flux from their host clusters will be closely linked to the metallicity and the progenitor mass of the AGB star, to which dust chemistry and mass-loss rate are sensitive. Our sample of clusters-each the analogue of a similar to 1 Gyr old post-starburst galaxy-has implications within the context of mass and age estimation via SED modeling at high-z: we find that the average similar to 0.5 mag extinction estimated here may be sufficient to reduce the AGB contribution in the (rest-frame) K band from similar to 70%, as predicted in the latest generation of synthesis models, to similar to 35%. Our technique for selecting AGB-dominated clusters in nearby galaxies promises to be effective for discriminating the uncertainties associated with AGB stars in intermediate-age populations that plague age and mass estimation in high-z galaxies.},
  articleno    = {L30},
  author       = {van der Wel, Sharon Meidt and Schinnerer, Eva and Munoz-Mateos, Juan-Carlos and Holwerda, Benne and Ho, Luis C and Madore, Barry F and Knapen, Johan H and Bosma, Albert and Athanassoula, E and Hinz, Joannah L and Sheth, Kartik and Regan, Michael and Gil de Paz, Armando and Menendez-Delmestre, Karin and Seibert, Mark and Kim, Taehyun and Mizusawa, Trisha and Gadotti, Dimitri A and Laurikainen, Eija and Salo, Heikki and Laine, Jarkko and Comeron, Sebastien},
  issn         = {2041-8205},
  journal      = {ASTROPHYSICAL JOURNAL LETTERS},
  keywords     = {LARGE-MAGELLANIC-CLOUD,MASS-LOSS RETURN,SPITZER-SPACE-TELESCOPE,AGE,STELLAR POPULATIONS,ACTIVE GALACTIC NUCLEI,HIGH-REDSHIFT GALAXIES,EVOLVED STARS,NEARBY GALAXIES,MU-M,OPTICAL-PROPERTIES,galaxies: individual (M100),galaxies: star clusters: general,galaxies:,stellar content,stars: AGB and post-AGB},
  language     = {eng},
  number       = {2},
  pages        = {6},
  title        = {The S⁴G perspective on circumstellar dust extinction of asymptotic giant branch stars in M100},
  url          = {http://dx.doi.org/10.1088/2041-8205/748/2/L30},
  volume       = {748},
  year         = {2012},
}

Altmetric
View in Altmetric
Web of Science
Times cited: