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. Madore; R. 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

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, 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 language	English
Pages (from-to)	L111-L114
Journal	Astrophysical Journal
Volume	619
Issue number	1 II
DOIs	https://doi.org/10.1086/422811
Publication status	Published - 2005 Jan 20

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/422811

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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., ... Wyder, T. K. (2005). Galaxy evolution explorer ultraviolet color-magnitude relations and evidence of recent star formation in early-type galaxies. Astrophysical Journal, 619(1 II), L111-L114. https://doi.org/10.1086/422811

@article{00a85e6c96d14859914fc9bc50ed5c06,

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.",

keywords = "Galaxies: evolution, Galaxies: formation, Ultraviolet: 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.}",

year = "2005",

month = jan,

day = "20",

doi = "10.1086/422811",

language = "English",

volume = "619",

pages = "L111--L114",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1 II",

}

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

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.

KW - Galaxies: evolution

KW - Galaxies: formation

KW - Ultraviolet: galaxies

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

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

U2 - 10.1086/422811

DO - 10.1086/422811

M3 - Article

AN - SCOPUS:20044373056

SN - 0004-637X

VL - 619

SP - L111-L114

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 II

ER -

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

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