Galaxy evolution explorer ultraviolet color-magnitude relations and evidence of recent star formation in early-type galaxies

S. K. Yi, S. J. Yoon, S. Kaviraj, J. M. Deharveng, R. M. Rich, S. Salim, A. Boselli, Y. W. Lee, C. H. Ree, Y. J. Sohn, S. C. Rey, J. W. Lee, J. Rhee, L. Bianchi, Y. I. Byun, J. Donas, P. G. Friedman, T. M. Heckman, P. Jelinsky, B. F. MadoreR. Malina, D. C. Martin, B. Milliard, P. Morrissey, S. Neff, D. Schiminovich, O. Siegmund, T. Small, A. S. Szalay, M. J. Jee, S. W. Kim, T. Barlow, K. Forster, B. Welsh, T. K. Wyder

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Abstract

We have used the Galaxy Evolution Explorer UV photometric data to construct a first near-UV (NUV) color-magnitude relation (CMR) for the galaxies preclassified as early-type by Sloan Digital Sky Survey studies. The NUV CMR is a powerful tool for tracking the recent star formation history in early-type galaxies, owing to its high sensitivity to the presence of young stellar populations. Our NUV CMR for UV-weak galaxies shows a well-defined slope and thus will be useful for interpreting the rest-frame NUV data of distant galaxies and studying their star formation history. Compared to optical CMRs, the NUV CMR shows a substantially larger scatter, which we interpret as evidence of recent star formation activities. Roughly 15% of the recent epoch (z < 0.13) bright [M(r) < -22] early-type galaxies show a sign of recent ≤1 Gyr) star formation at the 1%-2% level (lower limit) in mass compared to the total stellar mass. This implies that low-level residual star formation was common during the last few billion years even in bright early-type galaxies.

Original languageEnglish
Pages (from-to)L111-L114
JournalAstrophysical Journal
Volume619
Issue number1 II
DOIs
Publication statusPublished - 2005 Jan 20

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star formation
galaxies
color
young population
history
histories
stellar mass
time measurement
slopes
sensitivity

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Yi, S. K. ; Yoon, S. J. ; Kaviraj, S. ; Deharveng, J. M. ; Rich, R. M. ; Salim, S. ; Boselli, A. ; Lee, Y. W. ; Ree, C. H. ; Sohn, Y. J. ; Rey, S. C. ; Lee, J. W. ; Rhee, J. ; Bianchi, L. ; Byun, Y. I. ; Donas, J. ; Friedman, P. G. ; Heckman, T. M. ; Jelinsky, P. ; Madore, B. F. ; Malina, R. ; Martin, D. C. ; Milliard, B. ; Morrissey, P. ; Neff, S. ; Schiminovich, D. ; Siegmund, O. ; Small, T. ; Szalay, A. S. ; Jee, M. J. ; Kim, S. W. ; Barlow, T. ; Forster, K. ; Welsh, B. ; Wyder, T. K. / Galaxy evolution explorer ultraviolet color-magnitude relations and evidence of recent star formation in early-type galaxies. In: Astrophysical Journal. 2005 ; Vol. 619, No. 1 II. pp. L111-L114.
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abstract = "We have used the Galaxy Evolution Explorer UV photometric data to construct a first near-UV (NUV) color-magnitude relation (CMR) for the galaxies preclassified as early-type by Sloan Digital Sky Survey studies. The NUV CMR is a powerful tool for tracking the recent star formation history in early-type galaxies, owing to its high sensitivity to the presence of young stellar populations. Our NUV CMR for UV-weak galaxies shows a well-defined slope and thus will be useful for interpreting the rest-frame NUV data of distant galaxies and studying their star formation history. Compared to optical CMRs, the NUV CMR shows a substantially larger scatter, which we interpret as evidence of recent star formation activities. Roughly 15{\%} of the recent epoch (z < 0.13) bright [M(r) < -22] early-type galaxies show a sign of recent ≤1 Gyr) star formation at the 1{\%}-2{\%} level (lower limit) in mass compared to the total stellar mass. This implies that low-level residual star formation was common during the last few billion years even in bright early-type galaxies.",
author = "Yi, {S. K.} and Yoon, {S. J.} and S. Kaviraj and Deharveng, {J. M.} and Rich, {R. M.} and S. Salim and A. Boselli and Lee, {Y. W.} and Ree, {C. H.} and Sohn, {Y. J.} and Rey, {S. C.} and Lee, {J. W.} and J. Rhee and L. Bianchi and Byun, {Y. I.} and J. Donas and Friedman, {P. G.} and Heckman, {T. M.} and P. Jelinsky and Madore, {B. F.} and R. Malina and Martin, {D. C.} and B. Milliard and P. Morrissey and S. Neff and D. Schiminovich and O. Siegmund and T. Small and Szalay, {A. S.} and Jee, {M. J.} and Kim, {S. W.} and T. Barlow and K. Forster and B. Welsh and Wyder, {T. K.}",
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Yi, SK, Yoon, SJ, Kaviraj, S, Deharveng, JM, Rich, RM, Salim, S, Boselli, A, Lee, YW, Ree, CH, Sohn, YJ, Rey, SC, Lee, JW, Rhee, J, Bianchi, L, Byun, YI, Donas, J, Friedman, PG, Heckman, TM, Jelinsky, P, Madore, BF, Malina, R, Martin, DC, Milliard, B, Morrissey, P, Neff, S, Schiminovich, D, Siegmund, O, Small, T, Szalay, AS, Jee, MJ, Kim, SW, Barlow, T, Forster, K, Welsh, B & Wyder, TK 2005, 'Galaxy evolution explorer ultraviolet color-magnitude relations and evidence of recent star formation in early-type galaxies', Astrophysical Journal, vol. 619, no. 1 II, pp. L111-L114. https://doi.org/10.1086/422811

Galaxy evolution explorer ultraviolet color-magnitude relations and evidence of recent star formation in early-type galaxies. / Yi, S. K.; Yoon, S. J.; Kaviraj, S.; Deharveng, J. M.; Rich, R. M.; Salim, S.; Boselli, A.; Lee, Y. W.; Ree, C. H.; Sohn, Y. J.; Rey, S. C.; Lee, J. W.; Rhee, J.; Bianchi, L.; Byun, Y. I.; Donas, J.; Friedman, P. G.; Heckman, T. M.; Jelinsky, P.; Madore, B. F.; Malina, R.; Martin, D. C.; Milliard, B.; Morrissey, P.; Neff, S.; Schiminovich, D.; Siegmund, O.; Small, T.; Szalay, A. S.; Jee, M. J.; Kim, S. W.; Barlow, T.; Forster, K.; Welsh, B.; Wyder, T. K.

In: Astrophysical Journal, Vol. 619, No. 1 II, 20.01.2005, p. L111-L114.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Galaxy evolution explorer ultraviolet color-magnitude relations and evidence of recent star formation in early-type galaxies

AU - Yi, S. K.

AU - Yoon, S. J.

AU - Kaviraj, S.

AU - Deharveng, J. M.

AU - Rich, R. M.

AU - Salim, S.

AU - Boselli, A.

AU - Lee, Y. W.

AU - Ree, C. H.

AU - Sohn, Y. J.

AU - Rey, S. C.

AU - Lee, J. W.

AU - Rhee, J.

AU - Bianchi, L.

AU - Byun, Y. I.

AU - Donas, J.

AU - Friedman, P. G.

AU - Heckman, T. M.

AU - Jelinsky, P.

AU - Madore, B. F.

AU - Malina, R.

AU - Martin, D. C.

AU - Milliard, B.

AU - Morrissey, P.

AU - Neff, S.

AU - Schiminovich, D.

AU - Siegmund, O.

AU - Small, T.

AU - Szalay, A. S.

AU - Jee, M. J.

AU - Kim, S. W.

AU - Barlow, T.

AU - Forster, K.

AU - Welsh, B.

AU - Wyder, T. K.

PY - 2005/1/20

Y1 - 2005/1/20

N2 - We have used the Galaxy Evolution Explorer UV photometric data to construct a first near-UV (NUV) color-magnitude relation (CMR) for the galaxies preclassified as early-type by Sloan Digital Sky Survey studies. The NUV CMR is a powerful tool for tracking the recent star formation history in early-type galaxies, owing to its high sensitivity to the presence of young stellar populations. Our NUV CMR for UV-weak galaxies shows a well-defined slope and thus will be useful for interpreting the rest-frame NUV data of distant galaxies and studying their star formation history. Compared to optical CMRs, the NUV CMR shows a substantially larger scatter, which we interpret as evidence of recent star formation activities. Roughly 15% of the recent epoch (z < 0.13) bright [M(r) < -22] early-type galaxies show a sign of recent ≤1 Gyr) star formation at the 1%-2% level (lower limit) in mass compared to the total stellar mass. This implies that low-level residual star formation was common during the last few billion years even in bright early-type galaxies.

AB - We have used the Galaxy Evolution Explorer UV photometric data to construct a first near-UV (NUV) color-magnitude relation (CMR) for the galaxies preclassified as early-type by Sloan Digital Sky Survey studies. The NUV CMR is a powerful tool for tracking the recent star formation history in early-type galaxies, owing to its high sensitivity to the presence of young stellar populations. Our NUV CMR for UV-weak galaxies shows a well-defined slope and thus will be useful for interpreting the rest-frame NUV data of distant galaxies and studying their star formation history. Compared to optical CMRs, the NUV CMR shows a substantially larger scatter, which we interpret as evidence of recent star formation activities. Roughly 15% of the recent epoch (z < 0.13) bright [M(r) < -22] early-type galaxies show a sign of recent ≤1 Gyr) star formation at the 1%-2% level (lower limit) in mass compared to the total stellar mass. This implies that low-level residual star formation was common during the last few billion years even in bright early-type galaxies.

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U2 - 10.1086/422811

DO - 10.1086/422811

M3 - Article

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VL - 619

SP - L111-L114

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

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