E+A galaxies are characterized as a galaxy with strong Balmer absorption lines but without any [OII] nor Hα emission lines. The existence of strong Balmer absorption lines indicates that E+A galaxies have experienced starburst within recent one Gyr. However, the lack of [OII] and Hα emission lines indicates that E+A galaxies do not have any on-going star formation. Therefore, E+A galaxies are i...

Based on our intensive spectroscopic campaign with the GoldCam spectrograph on the Kitt Peak National Observatory (KPNO) 2.1-m telescope, we have constructed the first catalogue of E+A galaxies with spectroscopic companion galaxies, and investigated a probability that an E+A galaxy have close companion galaxies. We selected 660 E+A galaxies with 4.0Å < Hδ EW at a redshift of < 0.167 from the Da...

We have undertaken a survey of Hα emission in a substantially complete sample of CGCG galaxies of types Sa and later within 1.5 Abell radii of the centres of 8 320 galaxies were surveyed, of which 116 were detected in emission (39% of spirals, 75% of peculiars). Here we present previously unpublished data for 243 galaxies in 7 clusters. Detected emission was classified as 'compact' or 'diffuse'...

A velocity dispersion has been measured for the luminous globular cluster M31 037-B327, claimed to be the most massive star cluster in the Local Group and to be a young “super star cluster” that has survived to an old age. M31 037-B327 has a mass comparable to that of M31 G1 but not significantly larger. Although near the upper end for the mass distribution of globular clusters, it is not an un...

We study the mid-infrared properties of galaxies in 30 massive galaxy clusters at 0.02≤z≤0.40, using panoramic Spitzer/MIPS 24μm and near-infrared data, including 27 new observations from the LoCuSS and ACCESS surveys. This is the largest sample of clusters to date with such high-quality and uniform mid-infrared data covering not only the cluster cores, but extending into the infall regions. We...

We present Keck/LRIS optical spectra of 17 Lyα–emitting galaxies and one Lyman break galaxy at z ≈ 4.5 discovered in the Large Area Lyman Alpha (LALA) survey. The survey has identified a sample of ∼ 350 candidate Lyα–emitting galaxies at z ≈ 4.5 in a search volume of 1.5× 10 comoving Mpc. We targeted 25 candidates for spectroscopy; hence, the 18 confirmations presented herein suggest a selectio...

We present optical and near-infrared photometry for a sample of 96 dusty, far-infrared luminous galaxies. We have precise spectroscopic redshifts for all these galaxies yielding a median redshift of < z>= 2.2. The majority, 78, are submillimeter-detected galaxies lying at z = 0.2–3.6, while the remaining 18 are optically-faint μJy radio galaxies at z = 0.9–3.4 which are proposed to be similarly...

In this letter we present ground-based subarcsecond mid-infrared imaging and spectroscopy of young super star clusters in the overlap region of the merging galaxies NGC4038/4039 (the Antennae) obtained with the VLT Imager and Spectrometer for mid-Infrared (VISIR). With its unprecedented spatial resolution VISIR begins to resolve the H ii/PDR complexes around the star-forming regions for the fir...

Abstract. The galaxy population in rich local galaxy clusters shows a ratio of one quarter elliptical galaxies, two quarters S0 galaxies, and one quarter spiral galaxies. Observations of clusters at redshift 0.5 show a perspicuously different ratio, the dominant galaxy type are spiral galaxies with a fraction of two quarters while the number of S0 galaxies decreases to a fraction of one quarter...

A velocity dispersion has been measured for the luminous globular cluster M31 037–B327, claimed to be the most massive star cluster in the Local Group and to be a young “super star cluster” that has survived to an old age. M31 037– B327 has a mass comparable to that of M31 G1, but not significantly larger. Although near the upper end for the mass distribution of globular clusters, it is not an ...