Erratum: “Far‐Infrared Photometry of a Statistical Sample of Late‐Type Virgo Cluster Galaxies” (ApJS, 139, 37 [2002])

2002 ◽  
Vol 140 (2) ◽  
pp. 609-609 ◽  
Author(s):  
Richard J. Tuffs ◽  
Cristina C. Popescu ◽  
Daniele Pierini ◽  
Heinrich J. Volk ◽  
Hans Hippelein ◽  
...  
2002 ◽  
Vol 139 (1) ◽  
pp. 37-79 ◽  
Author(s):  
Richard J. Tuffs ◽  
Cristina C. Popescu ◽  
Daniele Pierini ◽  
Heinrich J. Volk ◽  
Hans Hippelein ◽  
...  

Author(s):  
Alessandro Boselli ◽  
Giuseppe Gavazzi ◽  
Hans Hippelein ◽  
James Lequeux ◽  
Daniele Pierini ◽  
...  

2002 ◽  
Vol 567 (1) ◽  
pp. 221-236 ◽  
Author(s):  
Cristina C. Popescu ◽  
Richard J. Tuffs ◽  
Heinrich J. Volk ◽  
Daniele Pierini ◽  
Barry F. Madore

1997 ◽  
Vol 121 (3) ◽  
pp. 507-551 ◽  
Author(s):  
A. Boselli ◽  
R. J. Tuffs ◽  
G. Gavazzi ◽  
H. Hippelein ◽  
D. Pierini

2018 ◽  
Vol 620 ◽  
pp. A165 ◽  
Author(s):  
Aku Venhola ◽  
Reynier Peletier ◽  
Eija Laurikainen ◽  
Heikki Salo ◽  
Enrichetta Iodice ◽  
...  

Context. The Fornax Deep Survey (FDS), an imaging survey in the u′, g′, r′, and i′-bands, has a supreme resolution and image depth compared to the previous spatially complete Fornax Cluster Catalog (FCC). Our new data allows us to study the galaxies down to r′-band magnitude mr′ ≈ 21 mag (Mr′ ≈ −10.5 mag), which opens a new parameter regime to investigate the evolution of dwarf galaxies in the cluster environment. After the Virgo cluster, Fornax is the second nearest galaxy cluster to us, and with its different mass and evolutionary state, it provides a valuable comparison that makes it possible to understand the various evolutionary effects on galaxies and galaxy clusters. These data provide an important legacy dataset to study the Fornax cluster. Aims. We aim to present the Fornax Deep Survey (FDS) dwarf galaxy catalog, focusing on explaining the data reduction and calibrations, assessing the quality of the data, and describing the methods used for defining the cluster memberships and first order morphological classifications for the catalog objects. We also describe the main scientific questions that will be addressed based on the catalog. This catalog will also be invaluable for future follow-up studies of the Fornax cluster dwarf galaxies. Methods. As a first step we used the SExtractor fine-tuned for dwarf galaxy detection, to find galaxies from the FDS data, covering a 26 deg2 area of the main cluster up to its virial radius, and the area around the Fornax A substructure. We made 2D-decompositions of the identified galaxies using GALFIT, measure the aperture colors, and the basic morphological parameters like concentration and residual flux fraction. We used color–magnitude, luminosity–radius and luminosity–concentration relations to separate the cluster galaxies from the background galaxies. We then divided the cluster galaxies into early- and late-type galaxies according to their morphology and gave first order morphological classifications using a combination of visual and parametric classifications. Results. Our final catalog includes 14 095 galaxies. We classify 590 galaxies as being likely Fornax cluster galaxies, of which 564 are dwarfs (Mr′ >  −18.5 mag) consisting our Fornax dwarf catalog. Of the cluster dwarfs we classify 470 as early-types, and 94 as late-type galaxies. Our final catalog reaches its 50% completeness limit at magnitude Mr′ = −10.5 mag and surface brightness μ¯e,r′ = 26 mag arcsec−2, which is approximately three magnitudes deeper than the FCC. Based on previous works and comparison with a spectroscopically confirmed subsample, we estimate that our final Fornax dwarf galaxy catalog has ≲10% contamination from the background objects.


2009 ◽  
Vol 694 (2) ◽  
pp. 1435-1451 ◽  
Author(s):  
E. J. Murphy ◽  
J. D. P. Kenney ◽  
G. Helou ◽  
A. Chung ◽  
J. H. Howell

2018 ◽  
Vol 614 ◽  
pp. A33 ◽  
Author(s):  
D. Donevski ◽  
V. Buat ◽  
F. Boone ◽  
C. Pappalardo ◽  
M. Bethermin ◽  
...  

Context. Over the last decade a large number of dusty star-forming galaxies has been discovered up to redshift z = 2 − 3 and recent studies have attempted to push the highly confused Herschel SPIRE surveys beyond that distance. To search for z ≥ 4 galaxies they often consider the sources with fluxes rising from 250 μm to 500 μm (so-called “500 μm-risers”). Herschel surveys offer a unique opportunity to efficiently select a large number of these rare objects, and thus gain insight into the prodigious star-forming activity that takes place in the very distant Universe. Aims. We aim to implement a novel method to obtain a statistical sample of 500 μm-risers and fully evaluate our selection inspecting different models of galaxy evolution. Methods. We consider one of the largest and deepest Herschel surveys, the Herschel Virgo Cluster Survey. We develop a novel selection algorithm which links the source extraction and spectral energy distribution fitting. To fully quantify selection biases we make end-to-end simulations including clustering and lensing. Results. We select 133 500 μm-risers over 55 deg2, imposing the criteria: S500 > S350 > S250, S250 > 13.2 mJy and S500 > 30 mJy. Differential number counts are in fairly good agreement with models, displaying a better match than other existing samples. The estimated fraction of strongly lensed sources is 24+6-5% based on models. Conclusions. We present the faintest sample of 500 μm-risers down to S250 = 13.2 mJy. We show that noise and strong lensing have an important impact on measured counts and redshift distribution of selected sources. We estimate the flux-corrected star formation rate density at 4 < z < 5 with the 500 μm-risers and find it to be close to the total value measured in far-infrared. This indicates that colour selection is not a limiting effect to search for the most massive, dusty z > 4 sources.


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