E+A galaxies with blue cores: Active galaxies in transition

Yujin Yang, Christy A. Tremonti, Ann I Zabludoff, Dennis F Zaritsky

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Hubble Space Telescope (HST) ACS images reveal blue cores in four E+A, or post-starburst, galaxies. Follow-up spectroscopy shows that these cores have LINER spectra. The existence of LINERs, consistent with those in many elliptical galaxies, is yet one more piece of evidence that these postmerger, post-starburst, bulge-dominated galaxies will evolve into normal elliptical galaxies. More interestingly, if LINERs are powered by low-luminosity active galactic nuclei (AGNs), their presence in these E+A's suggests that any rapid growth phase of the central black hole ended in rough concert with the cessation of star formation. This result emphasizes the importance of E+A's for exploring how the evolution of black holes and AGNs may be tied to that of galactic bulges.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume646
Issue numberII
DOIs
StatePublished - Jul 20 2006

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active galaxies
elliptical galaxies
active galactic nuclei
spectroscopy
galaxies
galactic bulge
starburst galaxies
Hubble Space Telescope
star formation
luminosity

Keywords

  • Galaxies: active
  • Galaxies: evolution
  • Galaxies: starburst

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

E+A galaxies with blue cores : Active galaxies in transition. / Yang, Yujin; Tremonti, Christy A.; Zabludoff, Ann I; Zaritsky, Dennis F.

In: Astrophysical Journal, Vol. 646, No. II, 20.07.2006.

Research output: Contribution to journalArticle

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