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The 3-D structure of the Coma–A 1367 supercluster: Optical spectroscopy of 102 galaxies

Optical spectroscopy of 117 CGCG galaxies, 102 of which are projected in the direction of the Coma–A 1367 supercluster, is reported. These new measurements, added to those found in the literature, bring to 1068 the number of CGCG galaxies in this region with available redshift, out of a total of 1085 objects with . We use these data to infer the 3-D structure of the Coma...

Optical spectroscopy of galaxies in the direction of the Virgo cluster

Optical spectroscopy of 76 galaxies, 48 of which are projected in the direction of the Virgo cluster and 28 onto the Coma–A1367 supercluster, is reported. Adding these new measurements to those found in the literature, the redshift completeness in the Virgo region becomes 92% at and 68% at . The one of CGCG galaxies in the direction of the Coma–A1367 supercluster becomes 98%. The...

1.65 μm (H-band) surface photometry of galaxies - IV. observations of 170 galaxies with the Calar Alto 2.2 m telescope

We present near-infrared (H band) surface photometry of 170 galaxies, obtained in 1997 using the Calar Alto 2.2 m telescope equipped with the NICMOS3 camera MAGIC. The majority of our targets are selected among bright members of the Virgo cluster, however galaxies in the A262 and Cancer clusters and in the Coma/A1367 supercluster are also included. This data set is aimed at...

A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) - I. Introduction to the survey

. Combes T. Contini L. Cortese P. Côté S. Côté J. C. Cuillandre L. Drissen B. Epinat M. Fumagalli S. Gallagher G. Gavazzi J. Gomez-Lopez S. Gwyn W. Harris G. Hensler B. Koribalski M. Marcelin A. McConnachie

Infections chez le sujet âgé : nécessaire collaboration entre infectiologues et gériatres

G. Gavazzi - SFGG) sest donc cr autour dobjectifs de recherche, damlioration et de diffusion des bonnes pratiques et donc de formation. Les liens entre deux disciplines transversales, qui ont

Spectacular tails of ionized gas in the Virgo cluster galaxy NGC 4569

Context. Using MegaCam at the CFHT, we obtained a deep narrow band Hα+[NII] wide-field image of NGC 4569 (M90), the brightest late-type galaxy in the Virgo cluster. The image reveals the presence of long tails of diffuse ionized gas, without any associated stellar component extending from the disc of the galaxy up to ≃80 kpc (projected distance) and with a typical surface...

Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA - VI. The role of bars in quenching star formation from z = 3 to the present epoch

A growing body of evidence indicates that the star formation rate per unit stellar mass (sSFR) decreases with increasing mass in normal main-sequence star-forming galaxies. Many processes have been advocated as being responsible for this trend (also known as mass quenching), e.g., feedback from active galactic nuclei (AGNs), and the formation of classical bulges. In order to...

Cold gas properties of the Herschel Reference Survey - III. Molecular gas stripping in cluster galaxies

The Herschel Reference Survey is a complete volume-limited, K-band-selected sample of nearby objects including Virgo cluster and isolated objects. Using a recent compilation of Hi and CO data for this sample we study the effects of the cluster environment on the molecular gas content of spiral galaxies. With the subsample of unperturbed field galaxies, we first identify the...

The ultraviolet luminosity function and star formation rate of the Coma cluster

) and Morrissey et al. (2005, 2007). The data analysed in this paper are part of a Cycle 1 Guest Investigator proposal (P.I. G. Gavazzi, proposal number: GI1-039). 12 pointings have been originally

Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA - I. Catalogue in the Local Supercluster

), Martin et al. (2010) and Haynes et al. (2011). G. Gavazzi et al.: Hα3: Hα imaging survey of HI selected galaxies from ALFALFA. I. Fig. 1. Bottom panel. Sky distribution of 409 HI selected galaxies ... completed in four runs of nine nights each, allocated from 2006 G. Gavazzi et al.: Hα3: Hα imaging survey of HI selected galaxies from ALFALFA. I. Fig. 3. Properties of the Hα3 sample, compared to that of

Ultraviolet dust attenuation in star-forming galaxies – II. Calibrating the A(UV) versus LTIR/LUV relation

We investigate the dependence of the total-IR (TIR) to ultraviolet (UV) luminosity ratio method for calculating the UV dust attenuation A(UV) from the age of the underlying stellar populations by using a library of spectral energy distributions for galaxies with different star formation histories. Our analysis confirms that the TIR/UV versus A(UV) relation varies significantly...

The IRX-β relation on subgalactic scales in star-forming galaxies of the Herschel Reference Survey

3 A. Cooray 7 L. Cortese 6 S. Eales 5 G. Gavazzi 4 H. L. Gomez 5 V. Lebouteiller 9 C. Pappalardo 8 M. Pohlen 5 M. W. L. Smith 5 L. Spinoglio 2 0 UK ALMA Regional Centre Node, Jodrell Bank Centre for

The census of nuclear activity of late-type galaxies in the Virgo cluster

The first spectroscopic census of active galactic nuclei (AGNs) associated with late-type galaxies in the Virgo cluster was carried out by observing 213 out of a complete set of 237 galaxies more massive than Mdyn > 108.5 M⊙. Among them, 77 are classified as AGNs [including 21 transition objects, 47 low-ionization nuclear emission regions (LINERs) and nine Seyferts] and comprise...

Spectrophotometry of galaxies in the Virgo cluster - II. The data

galaxies Send offprint requests to: G. Gavazzi, e-mail: Based on observations collected at the Observatoire de Haute Provence (OHP) (France), operated by the CNRS, at the European Southern Observatory ... 3 × σ upper limits to the strength of [OII] as 3 × rms(3750−4050) × 7, where 7 Å is the mean FWHM of the [OII] lines detected at OHP. G. Gavazzi et al.: Spectro-photometry of galaxies in the Virgo

The Herschel Virgo Cluster Survey – XII. FIR properties of optically selected Virgo cluster galaxies

L. Cortese 12 M. Baes 11 D. J. Bomans 10 M. Boquien 9 A. Boselli 9 L. Ciesla 9 M. Clemens 14 E. Corbelli 6 I. De Looze 11 J. Fritz 11 G. Gavazzi 13 C. Pappalardo 6 M. Grossi 8 L. K. Hunt 6 S. Madden 3

The star formation rate in disc galaxies: thresholds and dependence on gas amount

We reassess the applicability of the Toomre criterion in galactic discs and we study the local star formation law in 16 disc galaxies for which abundance gradients are published. The data we use consist of stellar light profiles, atomic and molecular gas (deduced from CO with a metallicity-dependent conversion factor), star formation rates (from Hα emissivities), metallicities...

Witnessing galaxy preprocessing in the local Universe: the case of a star-bursting group falling into Abell 1367

We present a multiwavelength analysis of a compact group of galaxies infalling at high speed into the dynamically young cluster Abell 1367. Peculiar morphologies and unusually high Hα emission are associated with two giant galaxies and at least ten dwarfs/extragalactic HII regions, making this group the region with the highest density of star formation activity ever observed in...

Introducing GOLDMine: A new galaxy database on the WEB

The new World Wide Web site “GOLDMine” (Galaxy On Line Database Milano Network) (http:// goldmine.mib.infn.it) contains a multiwavelength data-base of an optically selected sample of 3267 galaxies in the Virgo cluster and in the Coma Supercluster. It is designed for professional astronomers who wish to find data and images for these galaxies. Data gathered in 15 years of...

Hα surface photometry of galaxies in nearby clusters - V. The survey completion

We present the Hα imaging observations of 273 late-type galaxies in the nearby rich galaxy clusters Virgo, A 1367, Coma, Cancer, Hercules and in the Great Wall, carried out primarily with the 2.1 m telescope of the San Pedro Martir Observatory (SPM) and with the ESO/3.6 m telescope. We derived the Hα+[NII] fluxes and equivalent widths. The Hα survey reached completion for an...