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

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

doi:10.1086/422811

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

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

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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 language	English
Article number	L111
Journal	Astrophysical Journal Letters
Volume	619
Issue number	1
DOIs	https://doi.org/10.1086/422811
Publication status	Published - 20 Jan 2005

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Yi, S. K., Yoon, S.-J., Lee, Y.-W., Ree, C. H., Sohn, Y.-J., Rey, S.-C., Rhee, J., Byun, Y.-I., Kim, S.-W., Kaviraj, S., Deharveng, J.-M., Boselli, A., Donas, J., Malina, R., Milliard, B., Rich, R. M., Salim, S., Friedman, P. G., Martin, D. C., ... Schiminovich, D. (2005). Galaxy evolution explorer ultraviolet color-magnitude relations and evidence of recent star formation in early-type galaxies. Astrophysical Journal Letters, 619(1), Article L111. https://doi.org/10.1086/422811

@article{cd99aacf75304758bc14775e1b328f14,

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

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

year = "2005",

month = jan,

day = "20",

doi = "10.1086/422811",

language = "English",

volume = "619",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

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Yi, SK, Yoon, S-J, Lee, Y-W, Ree, CH, Sohn, Y-J, Rey, S-C, Rhee, J, Byun, Y-I, Kim, S-W, Kaviraj, S, Deharveng, J-M, Boselli, A, Donas, J, Malina, R, Milliard, B, Rich, RM, Salim, S, Friedman, PG, Martin, DC, Morrissey, P, Small, T, Barlow, T, Forster, K, Wyder, TK, Lee, J-W, Bianchi, L, Heckman, TM, Szalay, AS, Jee, MJ, Jelinsky, P, Siegmund, O, Welsh, B, Madore, BF, Neff, S & Schiminovich, D 2005, 'Galaxy evolution explorer ultraviolet color-magnitude relations and evidence of recent star formation in early-type galaxies', Astrophysical Journal Letters, vol. 619, no. 1, L111. https://doi.org/10.1086/422811

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 - Lee, Y.-W.

AU - Ree, C.H.

AU - Sohn, Y.-J.

AU - Rey, S.-C.

AU - Rhee, J.

AU - Byun, Y.-I.

AU - Kim, S.-W.

AU - Kaviraj, S.

AU - Deharveng, J.-M.

AU - Boselli, A.

AU - Donas, J.

AU - Malina, R.

AU - Milliard, B.

AU - Rich, R.M.

AU - Salim, S.

AU - Friedman, P.G.

AU - Martin, D.C.

AU - Morrissey, P.

AU - Small, T.

AU - Barlow, T.

AU - Forster, K.

AU - Wyder, T.K.

AU - Lee, J.-W.

AU - Bianchi, L.

AU - Heckman, T.M.

AU - Szalay, A.S.

AU - Jee, M.J.

AU - Jelinsky, P.

AU - Siegmund, O.

AU - Welsh, B.

AU - Madore, B.F.

AU - Neff, S.

AU - Schiminovich, D.

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.

UR - http://www.scopus.com/inward/record.url?scp=20044373056&partnerID=8YFLogxK

U2 - 10.1086/422811

DO - 10.1086/422811

M3 - Article

AN - SCOPUS:20044373056

SN - 2041-8205

VL - 619

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L111

ER -

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

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