Spatial distribution of neutral hydrogen in Virgo cluster galaxies of early type

1976 ◽  
Vol 208 ◽  
pp. L7 ◽  
Author(s):  
N. Krumm ◽  
E. E. Salpeter
Keyword(s):  
Spatial Distribution ◽  
Neutral Hydrogen ◽  
Virgo Cluster ◽  
Early Type ◽  
Cluster Galaxies

scholarly journals The GALEX Ultraviolet Virgo Cluster Survey (GUViCS)

2018 ◽  
Vol 611 ◽  
pp. A42 ◽  
Author(s):  
S. Boissier ◽  
O. Cucciati ◽  
A. Boselli ◽  
S. Mei ◽  
L. Ferrarese
Keyword(s):  
Virgo Cluster ◽  
Small Error ◽  
Early Type ◽  
Redshift Range ◽  
Cluster Galaxies ◽  
The Past ◽  
Brightest Cluster Galaxies ◽  
Binary Channel ◽  
Using Data ◽  
Uv Upturn

Context. At low redshift, early-type galaxies often exhibit a rising flux with decreasing wavelength in the 1000–2500 Å range, called “UV upturn”. The origin of this phenomenon is debated, and its evolution with redshift is poorly constrained. The observed GALEX FUV-NUV color can be used to probe the UV upturn approximately to redshift 0.5.Aim. We provide constraints on the existence of the UV upturn up to redshift ~0.4 in the brightest cluster galaxies (BCG) located behind the Virgo cluster, using data from the GUViCS survey.Methods. We estimate the GALEX far-UV (FUV) and near-UV (NUV) observed magnitudes for BCGs from the maxBCG catalog in the GUViCS fields. We increase the number of nonlocal galaxies identified as BCGs with GALEX photometry from a few tens of galaxies to 166 (64 when restricting this sample to relatively small error bars). We also estimate a central color within a 20 arcsec aperture. By using the r-band luminosity from the maxBCG catalog, we can separate blue FUV-NUV due to recent star formation and candidate upturn cases. We use Lick indices to verify their similarity to redshift 0 upturn cases.Results. We clearly detect a population of blue FUV-NUV BCGs in the redshift range 0.10–0.35, vastly improving the existing constraints at these epochs by increasing the number of galaxies studied, and by exploring a redshift range with no previous data (beyond 0.2), spanning one more Gyr in the past. These galaxies bring new constraints that can help distinguish between assumptions concerning the stellar populations causing the UV upturn phenomenon. The existence of a large number of UV upturns around redshift 0.25 favors the existence of a binary channel among the sources proposed in the literature.

scholarly journals Real & Simulated IFU Observations of Low-Mass Early-Type Galaxies: Environmental Influence Probed for Cluster Galaxies

2016 ◽  
Vol 11 (S321) ◽  
pp. 289-289
Author(s):  
Agnieszka Sybilska ◽  
Ewa Luiza Łokas ◽  
Sylvain Fouquet
Keyword(s):  
Large Scale ◽  
Stellar Population ◽  
Environmental Influence ◽  
A Priori ◽  
Virgo Cluster ◽  
Early Type ◽  
Complex Issue ◽  
Cluster Galaxies ◽  
Theoretical Predictions ◽  
Low Mass

AbstractWe combine high-quality IFU data with a new set of numerical simulations to study low-mass early type galaxies (dEs) in dense environments. Our earlier study of dEs in the Virgo cluster has produced the first large-scale maps of kinematic and stellar population properties of dEs in those environments (Ryś et al. 2013, 2014, 2015). A quantitative discrimination between various (trans)formation processes proposed for these objects is, however, a complex issue, requiring a priori assumptions about the progenitors of galaxies we observe and study today. To bridge this gap between observations and theoretical predictions, we use the expertise gained in the IFU data analysis to look “through the eye of SAURON” at our new suite of high-resolution N-body simulations of dEs in the Virgo cluster. Mimicking the observers perspective as closely as possible, we can also indicate the existing instrumental and viewer limitations regarding what we are/are not able to detect as observers.

scholarly journals A GEMINI/GMOS STUDY OF INTERMEDIATE LUMINOSITY EARLY-TYPE VIRGO CLUSTER GALAXIES. I. GLOBULAR CLUSTER AND STELLAR KINEMATICS

2015 ◽  
Vol 806 (1) ◽  
pp. 133 ◽  
Author(s):  
Biao Li ◽  
Eric W. Peng ◽  
Hong-xin Zhang ◽  
John P. Blakeslee ◽  
Patrick Côté ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Virgo Cluster ◽  
Early Type ◽  
Stellar Kinematics ◽  
Cluster Galaxies

VLA observations of neutral hydrogen in Virgo Cluster galaxies. I - The Atlas

1990 ◽  
Vol 100 ◽  
pp. 604 ◽  
Author(s):  
V. Cayatte ◽  
C. Balkowski ◽  
J. H. van Gorkom ◽  
C. Kotanyi
Keyword(s):  
Neutral Hydrogen ◽  
Virgo Cluster ◽  
Cluster Galaxies

scholarly journals Early-type galaxies with neutral hydrogen in the Virgo cluster from the ALFALFA survey

2008 ◽  
Author(s):  
S. di Serego Alighieri ◽  
M. Grossi ◽  
C. Giovanardi ◽  
S. Pellegrini ◽  
G. Trinchieri ◽  
...  
Keyword(s):  
Neutral Hydrogen ◽  
Virgo Cluster ◽  
Early Type

scholarly journals NGC 4569: X-Ray Observation of a Spiral Galaxy with Nuclear Starburst Activity

1996 ◽  
Vol 171 ◽  
pp. 398-398
Author(s):  
N. Junkes ◽  
G. Hensler
Keyword(s):  
Star Formation ◽  
Local Group ◽  
Spectral Characteristics ◽  
Neutral Hydrogen ◽  
Virgo Cluster ◽  
X Rays ◽  
Early Type ◽  
X Ray ◽  
The Galaxy ◽  
Inner Region

We investigate the distribution of soft X-rays and their spectral characteristics for a sample of nearby nuclear starburst galaxies in order to probe their evolution. NGC 4569 is a bright early-type spiral in the Virgo cluster, one of the few blue-shifted galaxies outside the local group. It is gas-deficient in the outer spiral arms, the neutral hydrogen strongly concentrated in the inner region [1]. The bright nucleus, embedded in a normal stellar bulge, is probably the result of a recent star formation episode [4]. Based upon optical spectroscopy of its nucleus [5], the galaxy has been classified as a LINER. The results on NGC 2903 will be presented separately [2].

scholarly journals Environmental Extremists in the Virgo Cluster

1999 ◽  
Vol 186 ◽  
pp. 387-392 ◽  
Author(s):  
Jeffrey Kenney ◽  
Rebecca Koopmann
Keyword(s):  
Spiral Galaxies ◽  
Rapid Evolution ◽  
Virgo Cluster ◽  
Early Type ◽  
Low Velocity ◽  
Galaxy Interactions ◽  
Cluster Galaxies ◽  
Tidal Interactions ◽  
Environmental Interactions ◽  
Density Relationship

Many types of galaxy interactions have been posited to occur in clusters, although it remains unclear which processes actually occur, and which ones might help explain the tendency for early type galaxies to inhabit high density environments, or cause the rapid evolution of cluster galaxies (e.g., Dressler et al. 1997). With these questions in mind, we have been conducting an environmental inventory of galaxies in the Virgo Cluster. Our approach is to combine surveys of spirals and S0s with detailed studies of the most interesting and peculiar galaxies. In this paper, we describe two main points. 1.) There is a population of spiral galaxies in the Virgo cluster with the small central light concentrations (bulge-to-disk ratios, or B/D's) characteristic of isolated Sb and Sc galaxies, but global star formation rates lower than those of isolated spirals of any Hubble class (Sa-Sc). These Virgo galaxies are generally classified as “early type” (e.g. Sa), and thus contribute to the morphology-density relationship. 2.) There are several types of environmental interactions occurring in Virgo, including low velocity tidal interactions and mergers, high velocity tidal interactions and collisions, HI accretion, and ICM-ISM stripping. We discuss examples of some of these interactions.

scholarly journals Neutral Hydrogen in Virgo Cluster Galaxies

1973 ◽  
Vol 165 (2) ◽  
pp. 231-244 ◽  
Author(s):  
R. D. Davies ◽  
B. M. Lewis
Keyword(s):  
Neutral Hydrogen ◽  
Virgo Cluster ◽  
Cluster Galaxies

scholarly journals The ACS Virgo Cluster Survey. XV. The Formation Efficiencies of Globular Clusters in Early‐Type Galaxies: The Effects of Mass and Environment

2008 ◽  
Vol 681 (1) ◽  
pp. 197-224 ◽  
Author(s):  
Eric W. Peng ◽  
Andrés Jordán ◽  
Patrick Côté ◽  
Marianne Takamiya ◽  
Michael J. West ◽  
...  
Keyword(s):  
Globular Clusters ◽  
Virgo Cluster ◽  
Early Type ◽  
Cluster Survey
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