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We present HST/WFPC2 observations of the five bluest E+A galaxies (z~0.1) in the Zabludoff et al. sample to study whether their detailed morphologies are consistent with late-to-early type evolution and to determine what drives that…

天体物理学 · 物理学 2009-11-10 Yujin Yang , Ann I. Zabludoff , Dennis Zaritsky , Tod R. Lauer , J. Christopher Mihos

We have used deep integral field spectroscopy obtained with the GMOS instrument on Gemini-North to determine the spatial distribution of the post-starburst stellar population in four luminous E+A galaxies at z<0.04. We find all four…

宇宙学与河外天体物理 · 物理学 2015-06-15 M. B. Pracy , S. Croom , E. Sadler , W. J. Couch , H. Kuntschner , K Bekki , M. S. Owers , M. Zwaan , J. Turner , M. Bergmann

We use long-slit spectroscopic observations of the sample of E+A galaxies described by Zabludoff et al. to constrain the nature of the progenitors and remnants of the E+A phase of galaxy evolution. We measure spatially-resolved kinematic…

天体物理学 · 物理学 2009-11-06 Stuart A. Norton , Karl Gebhardt , Ann I. Zabludoff , Dennis Zaritsky

Post-starburst, or E+A galaxies, are the best candidates for galaxies in transition from being gas-rich and star-forming to gas-poor and passively-evolving via galaxy-galaxy mergers. To determine what E+A galaxies become after their young…

天体物理学 · 物理学 2009-09-28 Yujin Yang , Ann Zabludoff , Dennis Zaritsky , Christopher Mihos

We investigate the structural, kinematical, and spectrophotometric properties of ``E+A'' galaxies -- those with strong Balmer absorption lines but no significant [OII] emission -- using numerical simulations combined with stellar population…

天体物理学 · 物理学 2014-10-13 K. Bekki , W. J. Couch , Y. Shioya , A. Vazdekis

We use a purely data-driven rectified factor analysis to identify early-type galaxies with recent star formation in DR4 of the SDSS Spectroscopic Catalogue. We compare the spectra and environment of these galaxies with `normal' early-types,…

天体物理学 · 物理学 2009-11-11 Louisa A. Nolan , Somak Raychaudhury , Ata Kaban

We present three dimensional spectroscopy of eleven E+A galaxies, selected for their strong H-delta absorption but weak (or non-existent) [OII]3727 and H-alpha emission. This selection suggests that a recent burst of star-formation was…

宇宙学与河外天体物理 · 物理学 2017-05-10 Mark Swinbank , Michael Balogh , Richard Bower , Ann Zabludoff , John Lucey , Sean McGee , Chris Miller , Robert Nichol

We investigated the radial colour gradient and two-dimensional (2D) colour properties of 22 E+A galaxies with 5.5 < Hdelta equivalent width(EW) < 8.5\AA and 49 normal early-type galaxies as a control sample at a redshift of <0.2 in the…

天体物理学 · 物理学 2009-11-13 Chisato Yamauchi , Tomotsugu Goto

We select a sample of low-redshift (z ~ 0.1) E+A galaxies from the 2dF Galaxy Redshift Survey (2dFGRS). The spectra of these objects are defined by strong hydrogen Balmer absorption lines (H-delta, H-gamma, H-beta) combined with a lack of…

(Abridged) We present near-IR photometry of a selected sample of southern hemisphere E+A galaxies. The sample includes 50 galaxies from nearby and distant clusters as well as E+A galaxies from the field. The photometry includes J, H and Ks…

天体物理学 · 物理学 2009-10-31 Gaspar Galaz

[Abridged] Combining HST/WFPC2 mosaics with extensive ground-based spectroscopy, we study the nature of E+A galaxies in three intermediate redshift clusters (z=0.33, 0.58, & 0.83). From a sample of ~500 confirmed cluster members, we isolate…

天体物理学 · 物理学 2009-05-29 Kim-Vy Tran , Marijn Franx , Garth Illingworth , Daniel Kelson , Pieter van Dokkum

We have selected a sample of local E+A galaxies from the Sloan Digital Sky Survey (SDSS) Data Release 7 for follow up integral field spectroscopy with the Wide Field Spectrograph (WiFeS) on the ANU 2.3-m telescope. The sample was selected…

宇宙学与河外天体物理 · 物理学 2015-06-03 Michael B. Pracy , Matt S. Owers , Warrick J. Couch , Harald Kuntschner , Kenji Bekki , Frank Briggs , Phillip Lah , Martin Zwaan

We present a sample of 212 early-type galaxies (ETGs) at redshifts $0.25 < z < 0.75$. We combine deep integral-field spectroscopy from the MUSE-DEEP survey with high-resolution HST imaging to study the structure, kinematics, and stellar…

星系天体物理 · 物理学 2025-10-29 Pritom Mozumdar , Michele Cappellari , Christopher D. Fassnacht , Tommaso Treu

I present near-IR photometry of a selected sample of E+A galaxies observed in the southern hemisphere. The sample includes 50 galaxies from nearby clusters (z ~ 0.05) and distant clusters (z ~ 0.31) as well as E+A galaxies from the field (z…

天体物理学 · 物理学 2007-05-23 Gaspar Galaz

Narrow band multifilter photometry of the galaxy populations of four galaxy clusters at z=0.4-0.5 has provided us with a sample of 73 E+A galaxies which are secure cluster members. For 34 of them HST images are available (WFPC2). We have…

天体物理学 · 物理学 2007-05-23 Paola Belloni

We select E+A candidates from a spectroscopic dataset of ~800 field galaxies and measure the E+A fraction at 0.3<z<1 to be 2.7+/-1.1%, a value lower than that in galaxy clusters at comparable redshifts (11+/-3%). HST/WFPC2 imaging for five…

We observed twelve nearby HI -detected early-type galaxies (ETGs) of stellar mass $\sim 10^{10}M\odot \leq M_* \leq \sim 10^{11}M\odot$ with the Mitchell Integral-Field Spectrograph, reaching approximately three half-light radii in most…

Observations of galaxy isophotes, longs-slit kinematics and high-resolution photometry suggested a possible dichotomy between two distinct classes of E galaxies. But these methods are expensive for large galaxy samples. Instead,…

星系天体物理 · 物理学 2016-09-23 Michele Cappellari

We pick out the 35 brightest galaxies from Goto's E+A galaxies catalogue which are selected from the Sloan Digital Sky Survey Data Release 5. The spectra of E+As are prominently characterized by the strong Balmer absorption lines but little…

宇宙学与河外天体物理 · 物理学 2015-05-19 Wei Du , A-Li Luo , Philippe Prugniel , Yan-Chun Liang , Yong-Heng Zhao

Elliptical and S0 galaxies dominate the galaxy population in nearby rich clusters such as Coma. Studies of the evolution of the colors, M/L ratios, and line indices of early-type galaxies indicate that they have been a highly homogeneous,…

天体物理学 · 物理学 2007-05-23 Pieter G. van Dokkum
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