The<i>Herschel</i>Virgo Cluster Survey

Clemens, M.; Jones, A. P.; Bressan, A.; Baes, M.; Bendo, G. J.; Bianchi, S.; Bomans, D. J.; Boselli, A.; Corbelli, E.; Cortese, Luca; Dariush, Aliakbar; Davies, Jonathan Ivor; Looze, I. De; Alighieri, S. di Serego; Fadda, D.; Fritz, J.; Garcia‐Appadoo, D. A.; Gavazzi, G.; Giovanardi, C.; Grossi, M.; Hughes, T. M.; Hunt, L. K.; Madden, S.; Pierini, D.; Pohlen, M.; Sabatini, S.; Smith, M.; Verstappen, J.; Vlahakis, C.; Xilouris, E. M.; Zibetti, S.

doi:10.1051/0004-6361/201014533

Cited by 50 publications

(52 citation statements)

References 35 publications

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“…A similarly low value of the time-scale of interstellar dust destruction, only 46 Myr, is derived for early type galaxies (ETGs) detected in FIR by Spitzer observations (Clemens et al 2010). For a comparison, we also ran calculations of the SSP evolution with a longer dust destruction time-scale of 1 Gyr which corresponds to a lower gas density of 10 −4 cm −3 .…”

Section: The Origin Of Dust In Red-ementioning

confidence: 75%

H-ATLAS/GAMA: the nature and characteristics of optically red galaxies detected at submillimetre wavelengths

Dariush¹,

Dib²,

Hony³

et al. 2015

Mon. Not. R. Astron. Soc.

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We combine Herschel/SPIRE sub-millimeter (submm) observations with existing multiwavelength data to investigate the characteristics of low redshift, optically red galaxies detected in submm bands. We select a sample of galaxies in the redshift range 0.01 z 0.2, having >5σ detections in the SPIRE 250 µm submm waveband. Sources are then divided into two sub-samples of red and blue galaxies, based on their UV-optical colours. Galaxies in the red sample account for ≈ 4.2 per cent of the total number of sources with stellar masses M * 10 10 M . Following visual classification of the red galaxies, we find that 30 per cent of them are early-type galaxies and 40 per cent are spirals. The colour of the red -spiral galaxies could be the result of their highly inclined orientation and/or a strong contribution of the old stellar population.It is found that irrespective of their morphological types, red and blue sources occupy environments with more or less similar densities (i.e., the Σ 5 parameter). From the analysis of the spectral energy distributions (SEDs) of galaxies in our samples based on MAGPHYS, we find that galaxies in the red sample (of any morphological type) have dust masses similar to those in the blue sample (i.e. normal spiral/star-forming systems). However, in comparison to the red-spirals and in particular blue systems, red-ellipticals have lower mean dustto-stellar mass ratios. Besides galaxies in the red-elliptical sample have much lower mean star-formation/specific-star-formation rates in contrast to their counterparts in the blue sample. Our results support a scenario where dust in early-type systems is likely to be of an external origin.

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Section: The Origin Of Dust In Red-ementioning

confidence: 75%

H-ATLAS/GAMA: the nature and characteristics of optically red galaxies detected at submillimetre wavelengths

Dariush¹,

Dib²,

Hony³

et al. 2015

Mon. Not. R. Astron. Soc.

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“…At the low dust-mass end, at least several early-type galaxies (three elliptical and three S0) with M B ∼ −18 to −20 are undetected in the Herschel Space Observatory survey of the Virgo cluster. Upper limits constrain the associate dust mass of these galaxies to be <10 4 M (Clemens et al 2010). For comparison, the Virgo cluster spiral galaxies in the same B-band luminosity range also observed by Herschel have dust masses of ∼10 7 − 10 8 M (Davies et al 2011).…”

Section: Dust In Early-type Sn Ia Hostsmentioning

confidence: 78%

“…In fact, since the effects of dust and age show different redshift evolution (see Figure 10), the amount of dust required in such a scenario would need to be fine-tuned to the specific cluster redshift. Furthermore, the typical timescale for dust destruction, ∼10 7 -10 8 yr (Jones et al 1996;Temi et al 2007;Clemens et al 2010), is significantly shorter than the typical ages of even the youngest z ∼ 1.2 red-sequence ellipticals (∼10 9 yr; Rettura et al 2010), so we do not expect a difference in dust between blue and red extremes of the red sequence to play a role in the CMR residual scatter. Finally, a dust distribution in which each galaxy is reddened the same amount is a similarly unlikely fine-tuning scenario, and is inconsistent with findings in nearby ellipticals, in which infrared-inferred dust masses vary by several orders of magnitude (Tran et al 2001;Temi et al 2004Temi et al , 2007.…”

Section: Red-sequence Scattermentioning

confidence: 81%

THEHUBBLE SPACE TELESCOPECLUSTER SUPERNOVA SURVEY. III. CORRELATED PROPERTIES OF TYPE Ia SUPERNOVAE AND THEIR HOSTS AT 0.9 <z< 1.46

Meyers

Aldering

Barbary

et al. 2012

ApJ

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Using the sample of Type Ia supernovae (SNe Ia) discovered by the Hubble Space Telescope (HST) Cluster Supernova Survey and augmented with HST-observed SNe Ia in the Great Observatories Origins Deep Survey (GOODS) fields, we search for correlations between the properties of SNe and their host galaxies at high redshift. We use galaxy color and quantitative morphology to determine the red sequence in 25 clusters and develop a model to distinguish passively evolving early-type galaxies from star-forming galaxies in both clusters and the field. With this approach, we identify 6 SN Ia hosts that are early-type cluster members and 11 SN Ia hosts that are early-type field galaxies. We confirm for the first time at z > 0.9 that SNe Ia hosted by early-type galaxies brighten and fade more quickly than SNe Ia hosted by late-type galaxies. We also show that the two samples of hosts produce SNe Ia with similar color distributions. The relatively simple spectral energy distributions expected for passive galaxies enable us to measure stellar masses of early-type SN hosts. In combination with stellar mass estimates of late-type GOODS SN hosts from Thomson & Chary, we investigate the correlation of host mass with Hubble residual observed at lower redshifts. Although the sample is small and the uncertainties are large, a hint of this relation is found at z > 0.9. By simultaneously fitting the average cluster galaxy formation history and dust content to the red-sequence scatters, we show that the reddening of early-type cluster SN hosts is likely E(B − V ) 0.06. The similarity of the field and cluster early-type host samples suggests that field early-type galaxies that lie on the red sequence may also be minimally affected by dust. Hence, the early-type-hosted SNe Ia studied here occupy a more favorable environment to use as well-characterized high-redshift standard candles than other SNe Ia.

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“…We detected only the silicon features at about 10 and 18 μm, arising from the circumstellar envelopes of O-rich AGB stars. This dust, once diffused in the ISM, it is destroyed by the hot gas halo (see Clemens et al 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Bressan et al (2006) showed that the MIR spectra of the majority of the massive ETGs in clusters show neither Polycyclic Aromatic Hydrocarbons (PAHs) features nor emission lines, and exhibit only the broad silicate emission feature around 10 μm arising from circumstellar dust around oxygen-rich AGB stars, superimposed on a stellar photospheric continuum. ETGs with such MIR spectra, with either un-excited, or likely absent (see Clemens et al 2010), ISM, represent the class of passively evolving ETGs and can be considered the fossil record of galaxy evolution.…”

Section: Introductionmentioning

confidence: 99%

Nearby early-type galaxies with ionized gas

Panuzzo

Rampazzo

Bressan

et al. 2011

A&A

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Context. A large fraction of early-type galaxies (ETGs) shows emission lines in their optical spectra, mostly with LINER characteristics. Despite the number of studies, the nature of the ionization mechanisms is still debated. Many ETGs also show several signs of rejuvenation episodes. Aims. We aim to investigate the ionization mechanisms and the physical processes of a sample of ETGs using mid-infrared spectra. Methods. We present here low resolution Spitzer-IRS spectra of 40 ETGs, 18 of which from our proposed Cycle 3 observations, selected from a sample of 65 ETGs showing emission lines in their optical spectra. We homogeneously extract the mid-infrared (MIR) spectra, and after the proper subtraction of a "passive" ETG template, we derive the intensity of the ionic and molecular lines and of the polycyclic aromatic hydrocarbon (PAH) emission features. We use MIR diagnostic diagrams to investigate the powering mechanisms of the ionized gas. Results. The mid-infrared spectra of early-type galaxies show a variety of spectral characteristics. We empirically sub-divide the sample into five classes of spectra with common characteristics. Class-0, accounting for 20% of the sample, are purely passive ETGs with neither emission lines nor PAH features. Class-1 show emission lines but no PAH features, and account for 17.5% of the sample. Class-2, in which 50% of the ETGs are found, as well as having emission lines, show PAH features with unusual ratios, e.g. 7.7 μm/11.3 μm ≤ 2.3. Class-3 objects (7.5% of the sample) have emission lines and PAH features with ratios typical of star-forming galaxies. Class-4, containing only 5% of the ETGs, is dominated by a hot dust continuum. .82 μm, is used to investigate the different mechanisms ionizing the gas. According to the above diagram most of our ETGs contain gas ionized via either AGN-like or shock phenomena, or both. Conclusions. Most of the spectra in the present sample are classified as LINERs in the optical window. The proposed MIR spectral classes show unambiguously the manifold of the physical processes and ionization mechanisms, from star formation, low level AGN activity, to shocks (H 2 ), present in LINER nuclei.

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TheHerschelVirgo Cluster Survey

Cited by 50 publications

References 35 publications

H-ATLAS/GAMA: the nature and characteristics of optically red galaxies detected at submillimetre wavelengths

H-ATLAS/GAMA: the nature and characteristics of optically red galaxies detected at submillimetre wavelengths

THEHUBBLE SPACE TELESCOPECLUSTER SUPERNOVA SURVEY. III. CORRELATED PROPERTIES OF TYPE Ia SUPERNOVAE AND THEIR HOSTS AT 0.9 <z< 1.46

Nearby early-type galaxies with ionized gas

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