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相关论文: A Catalog of Local E+A(post-starburst) Galaxies se…

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We present the results of a wide-field spectroscopic analysis of the galaxy population of the massive cluster MACSJ0717.5+3745 and the surrounding filamentary structure (z=0.55), as part of our systematic study of the 12 most distant…

天体物理学 · 物理学 2009-11-13 Cheng-Jiun Ma , Harald Ebeling , David Donovan , Elizabeth Barrett

We develop a new method to constrain the star formation histories, dust attenuation and stellar masses of galaxies. It is based on two stellar absorption line indices, the 4000 Angstrom break strength and the Balmer absorption line index…

We have searched for active galactic nuclei (AGNs) in K+A galaxies, using multiwavelength imaging and spectroscopy in the Bootes field of the NOAO Deep Wide-Field Survey. The K+A galaxies, which have had their star formation rapidly…

We present spatially resolved intermediate resolution spectroscopy of a sample of twelve E+A galaxies in the z=0.32 rich galaxy cluster AC 114, obtained with the FLAMES multi-integral field unit system on the European Southern Observatory's…

天体物理学 · 物理学 2011-03-10 M. B. Pracy , W. J. Couch , C. Blake , K. Bekki , C. Harrison , M. Colless , H. Kuntschner , R. de Propris

We report results from a search for massive and evolved galaxies at z>5 in the GOODS southern field. Combining HST ACS, VLT ISAAC and Spitzer IRAC photometric data, we develop a color selection technique to identify candidates for being…

天体物理学 · 物理学 2009-11-13 T. Wiklind , M. Dickinson , H. C. Ferguson , M. Giavalisco , B. Mobasher , N. A. Grogin , N. Panagia

Post-starburst or "E+A" galaxies are rapidly transitioning from star-forming to quiescence. While the current star formation rate of post-starbursts is already at the level of early type galaxies, we recently discovered that many have large…

We present the results of an effort to identify and study a sample of the likely progenitors of elliptical (E) and lenticular (S0) K+A galaxies. To achieve this, we have searched a sample ~11,000 nearby (m(r)<16) early-type galaxies…

天体物理学 · 物理学 2009-11-13 J. F. Helmboldt , R. A. M. Walterbos , T. Goto

We present the first large-scale study of E+A (post-starburst) galaxies that incorporates photometry in the ultraviolet (UV) wavelengths. We find that the starburst that creates the E+A galaxy typically takes place within the last Gyr and…

天体物理学 · 物理学 2009-11-13 S. Kaviraj , L. A. Kirkby , J. Silk , M. Sarzi

By using a one-zone chemical and spectrophotometric evolution model of a disk galaxy undergoing a dusty starburst, we investigate, numerically, the optical spectroscopic properties in order to explore galaxy evolution in distant clusters.…

天体物理学 · 物理学 2009-11-06 Yasuhiro Shioya , Kenji Bekki , Warrick J. Couch

The traditional picture of post-starburst galaxies as dust- and gas-poor merger remnants, rapidly transitioning to quiescence, has been recently challenged. Unexpected detections of a significant ISM in many post-starbursts raise important…

We present a catalog of $\sim$52,000 extragalactic HII regions and their spectroscopic properties obtained using Integral Field Spectroscopy (IFS) from MUSE observations. The sample analyzed in this study contains 678 galaxies within the…

A deep optical galaxy search in the southern Milky Way - aimed at reducing the width of the Zone of Avoidance - revealed 3279 galaxy candidates above the diameter limit of D > 0.2 arcmin, of which only 112 (3.4%) were previously catalogued.…

天体物理学 · 物理学 2009-10-31 Renee C. Kraan-Korteweg

Despite decades of study, we still do not fully understand why some massive galaxies abruptly switch off their star formation in the early Universe, and what causes their rapid transition to the red sequence. Post-starburst galaxies provide…

We have performed a two-dimensional spectroscopy of three nearby E+A (post-starburst) galaxies with the Kyoto3DII integral field spectrograph. In all the cases, Hdelta absorption is stronger at the centre of the galaxies, but significantly…

天体物理学 · 物理学 2009-11-13 Tomotsugu Goto , Atsushi Kawai , Atsushi Shimono , Hajime Sugai , Masafumi Yagi , Takashi Hattori

Recent observational studies on galaxies in distant clusters discovered a significant fraction of possible dusty starburst galaxies with the so-called `e(a)' spectra that are characterized by strong H$\delta$ absorption and relatively…

天体物理学 · 物理学 2009-10-31 Yasuhiro Shioya , Kenji Bekki

We present the sixth list with results of the Hamburg/SAO Survey for Emission-Line Galaxies. The final list resulted from follow-up spectroscopy conducted with the 4.5m MMT telescope in 1996, and with 2.2m CAHA and 6m SAO telescopes in 2000…

Post starburst E+A galaxies are systems that hosted a powerful starburst that was quenched abruptly. Simulations suggest that these systems provide the missing link between major merger ULIRGs and red and dead ellipticals, where AGN…

星系天体物理 · 物理学 2020-04-22 Dalya Baron , Hagai Netzer , Ric I. Davies , J. Xavier Prochaska

Ever since the co-existence of an active galactic nucleus (AGN) and a starburst was observationally discovered, there has been a significant controversy over whether there is a physical connection between starbursts and AGNs. If yes, it is…

天体物理学 · 物理学 2009-11-11 Tomotsugu Goto

We examine the gas and stellar metallicities in a sample of HII galaxies from the Sloan Digital Sky Survey, which possibly contains the largest homogeneous sample of HII galaxy spectra to date. We eliminated all spectra with an insufficient…

宇宙学与河外天体物理 · 物理学 2015-06-03 Pieter Westera , François Cuisinier , Didier Curty , Roland Buser

Spitzer-MIPS 24 micron and ground-based observations of the rich galaxy cluster Abell 851 at z=0.41 are used to derive star formation rates from the mid-IR 24 micron and from [O II] 3727 emission. Many cluster galaxies have SFR(24…

天体物理学 · 物理学 2011-02-11 A. Dressler , J. Rigby , A. Oemler , J. Fritz , B. Poggianti , G. Rieke , L. Bai