A large H I cloud near the centre of the Virgo cluster

Oosterloo, Thomas; Gorkom, Jacqueline van

doi:10.1051/0004-6361:200500127

Cited by 234 publications

(333 citation statements)

References 24 publications

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“…The molecular masses have been estimated using the Galactic X CO . overdensity is higher where the gas plume observed in Oosterloo & van Gorkom (2005) connects with the disk. At 250 μm the disk is also slightly asymmetric, similar in shape to the CO distribution (middle and bottom panels of Fig.…”

Section: Ngc 4388mentioning

confidence: 92%

TheHerschelVirgo Cluster Survey

Pappalardo

Bianchi

Corbelli

et al. 2012

A&A

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Aims. We investigate the dust-to-gas mass ratio and the environmental effects on the various components of the interstellar medium for a spatially resolved sample of Virgo spirals. Methods. We have used the IRAM-30 m telescope to map over their full extent NGC 4189, NGC 4298, NGC 4388, and NGC 4299 in the 12 CO(1-0) and the 12 CO(2-1) lines. We observed the same lines in selected regions of NGC 4351, NGC 4294, and NGC 4424. The CO observations are combined with Herschel maps in 5 bands between 100-500 μm from the HeViCS survey, and with HI data from the VIVA survey, to obtain spatially resolved dust and gas distributions. We studied the environmental dependencies by adding to our sample eight galaxies with 12 CO(1-0) maps from the literature. Results. We estimate the integrated mass of molecular hydrogen for the galaxies observed in the CO lines. We find molecular-to-total gas mass fractions between 0.04 ≤ f mol ≤ 0.65, with the lowest values for the dimmest galaxy in the B-band. The integrated dust-togas ratio ranges between 0.011 and 0.004. For the 12 mapped galaxies we derive the radial distributions of the atomic gas, molecular gas, and dust. We also study the effect of different CO-to-H 2 conversion factors. Both the molecular gas and the dust distributions show steeper radial profiles for HI-deficient galaxies and the average dust-to-gas ratio for these galaxies increases or stays radially constant. On scales of ∼3 kpc, we find a strong correlation between the molecular gas and the 250 μm surface brightness that is tighter than average for non-deficient galaxies. The correlation becomes linear if we consider the total gas surface mass density. However, the inclusion of atomic hydrogen does not improve the statistical significance of the correlation. Conclusions. The environment can modify the distributions of molecules and dust within a galaxy, although these components are more tightly bound than the atomic gas.

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Section: Ngc 4388mentioning

confidence: 92%

TheHerschelVirgo Cluster Survey

Pappalardo

Bianchi

Corbelli

et al. 2012

A&A

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“…The observed H i filaments in, for example, Virgo and Ursa Major (Oosterloo & van Gorkom 2005;Boselli & Gavazzi 2006;Verheijen & Zwaan 2001;Wolfinger et al 2013) hint at the disruptive processes under way, while providing fuel for the formation of new dwarf galaxies from the tidal debris (Duc et al 2004;Lee-Waddell et al 2016). …”

Section: Introductionmentioning

confidence: 99%

H i debris in the IC 1459 galaxy group

Saponara

Koribalski

Benaglia

et al. 2017

Monthly Notices of the Royal Astronomical Society

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We present H i synthesis imaging of the giant elliptical galaxy IC 1459 and its surroundings with the Australia Telescope Compact Array (ATCA). Our search for extended H i emission revealed a large complex of H i clouds near IC 1459, likely the debris from tidal interactions with neighbouring galaxies. The total H i mass (∼ 10 9 M ) in the detected clouds spans 250 kpc from the north-east of the gas-rich spiral NGC 7418A to the south-east of IC 1459. The extent and mass of the H i debris, which shows rather irregular morphology and kinematics, are similar to those in other nearby groups. Together with H i clouds recently detected near two other IC 1459 group members, namely IC 5270 and NGC 7418, using Phased-Array Feeds (PAFs) on the Australian Square Kilometer Array Pathfinder (ASKAP), the detected debris make up a significant fraction of the group's intergalactic medium.

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“…Balogh, Navarro & Morris 2000). Typical examples of galaxies in the Virgo Cluster undergoing RP stripping include NGC 4388 (Oosterloo & van Gorkom 2005), NGC 4522 Vollmer et al 2004), NGC 4402 (Crowl et al 2005) and NGC 4438 (Chemin et al 2005). Although this effect is strongest in the central regions of clusters, cosmological simulations reveal that it remains an important mechanism of gas stripping of galaxies out to the virial radius of clusters (Tonnesen, Bryan & van Gorkom 2007).…”

Section: Introductionmentioning

confidence: 99%