The UV-optical galaxy color-magnitude diagram. III. Constraints on evolution from the blue to the red sequence

D. Christopher Martin, Ted K. Wyder, David Schiminovich, Tom A. Barlow, Karl Forster, Peter G. Friedman, Patrick Morrissey, Susan G. Neff, Mark Seibert, Todd Small, Barry Y. Welsh, Luciana Bianchi, José Donas, Timothy M. Heckman, Young-Wook Lee, Barry F. Madore, Bruno Milliard, R. Michael Rich, Alex S. Szalay, Sukyoung Yi

Research output: Contribution to journalArticle

187 Citations (Scopus)

Abstract

We introduce a new quantity, the mass flux density of galaxies evolving from the blue sequence to the red sequence. We propose a simple technique for constraining this mass flux using the volume-corrected number density in the extinction-corrected UV-optical color-magnitude distribution, the stellar age indexes HδA and Dn (4000), and a simple prescription for spectral evolution using a quenched star formation history. We exploit the excellent separation of red and blue sequences in the NUV - r band Hess function. The final value we measure, pT = 0.033 M yr -1 Mpc-3, is strictly speaking an upper limit due to the possible contributions of bursting, composite, and extincted galaxies. However, it compares favorably with estimates of the average mass flux that we make based on the red luminosity function evolution derived from the DEEP2 and COMBO-17 surveys, pR = +0.034 Myr-1 Mpc-3. We find that the blue sequence mass has remained roughly constant since z = 1 (pB ≃ 0.01 Myr-1 Mpc-3, but the average on-going star formation of pSF ≃ 0.037 Myr-1 Mpc-3 over 0 < z < 1 is balanced by mass flux off the blue sequence. We explore the nature of the galaxies in the transition zone with particular attention to the frequency and impact of active galactic nuclei (AGNs). The AGN fraction peaks in the transition zone. We find circumstantial, albeit weak evidence that the quench rates are higher in higher luminosity AGNs.

Original languageEnglish
Pages (from-to)342-356
Number of pages15
JournalAstrophysical Journal, Supplement Series
Volume173
Issue number2
DOIs
Publication statusPublished - 2007 Dec 1

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color-magnitude diagram
diagram
galaxies
active galactic nuclei
density (number/volume)
transition zone
star formation
luminosity
extinction
flux density
histories
color
composite materials
estimates
history

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science

Cite this

Martin, D. Christopher ; Wyder, Ted K. ; Schiminovich, David ; Barlow, Tom A. ; Forster, Karl ; Friedman, Peter G. ; Morrissey, Patrick ; Neff, Susan G. ; Seibert, Mark ; Small, Todd ; Welsh, Barry Y. ; Bianchi, Luciana ; Donas, José ; Heckman, Timothy M. ; Lee, Young-Wook ; Madore, Barry F. ; Milliard, Bruno ; Rich, R. Michael ; Szalay, Alex S. ; Yi, Sukyoung. / The UV-optical galaxy color-magnitude diagram. III. Constraints on evolution from the blue to the red sequence. In: Astrophysical Journal, Supplement Series. 2007 ; Vol. 173, No. 2. pp. 342-356.
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Martin, DC, Wyder, TK, Schiminovich, D, Barlow, TA, Forster, K, Friedman, PG, Morrissey, P, Neff, SG, Seibert, M, Small, T, Welsh, BY, Bianchi, L, Donas, J, Heckman, TM, Lee, Y-W, Madore, BF, Milliard, B, Rich, RM, Szalay, AS & Yi, S 2007, 'The UV-optical galaxy color-magnitude diagram. III. Constraints on evolution from the blue to the red sequence', Astrophysical Journal, Supplement Series, vol. 173, no. 2, pp. 342-356. https://doi.org/10.1086/516639

The UV-optical galaxy color-magnitude diagram. III. Constraints on evolution from the blue to the red sequence. / Martin, D. Christopher; Wyder, Ted K.; Schiminovich, David; Barlow, Tom A.; Forster, Karl; Friedman, Peter G.; Morrissey, Patrick; Neff, Susan G.; Seibert, Mark; Small, Todd; Welsh, Barry Y.; Bianchi, Luciana; Donas, José; Heckman, Timothy M.; Lee, Young-Wook; Madore, Barry F.; Milliard, Bruno; Rich, R. Michael; Szalay, Alex S.; Yi, Sukyoung.

In: Astrophysical Journal, Supplement Series, Vol. 173, No. 2, 01.12.2007, p. 342-356.

Research output: Contribution to journalArticle

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T1 - The UV-optical galaxy color-magnitude diagram. III. Constraints on evolution from the blue to the red sequence

AU - Martin, D. Christopher

AU - Wyder, Ted K.

AU - Schiminovich, David

AU - Barlow, Tom A.

AU - Forster, Karl

AU - Friedman, Peter G.

AU - Morrissey, Patrick

AU - Neff, Susan G.

AU - Seibert, Mark

AU - Small, Todd

AU - Welsh, Barry Y.

AU - Bianchi, Luciana

AU - Donas, José

AU - Heckman, Timothy M.

AU - Lee, Young-Wook

AU - Madore, Barry F.

AU - Milliard, Bruno

AU - Rich, R. Michael

AU - Szalay, Alex S.

AU - Yi, Sukyoung

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N2 - We introduce a new quantity, the mass flux density of galaxies evolving from the blue sequence to the red sequence. We propose a simple technique for constraining this mass flux using the volume-corrected number density in the extinction-corrected UV-optical color-magnitude distribution, the stellar age indexes HδA and Dn (4000), and a simple prescription for spectral evolution using a quenched star formation history. We exploit the excellent separation of red and blue sequences in the NUV - r band Hess function. The final value we measure, pT = 0.033 M⊙ yr -1 Mpc-3, is strictly speaking an upper limit due to the possible contributions of bursting, composite, and extincted galaxies. However, it compares favorably with estimates of the average mass flux that we make based on the red luminosity function evolution derived from the DEEP2 and COMBO-17 surveys, pR = +0.034 M⊙yr-1 Mpc-3. We find that the blue sequence mass has remained roughly constant since z = 1 (pB ≃ 0.01 M⊙yr-1 Mpc-3, but the average on-going star formation of pSF ≃ 0.037 M⊙yr-1 Mpc-3 over 0 < z < 1 is balanced by mass flux off the blue sequence. We explore the nature of the galaxies in the transition zone with particular attention to the frequency and impact of active galactic nuclei (AGNs). The AGN fraction peaks in the transition zone. We find circumstantial, albeit weak evidence that the quench rates are higher in higher luminosity AGNs.

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