Ram pressure stripping in high-density environments

Boselli, A.; Fossati, M.; Sun, Ming

doi:10.1007/s00159-022-00140-3

Cited by 141 publications

(159 citation statements)

References 642 publications

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“…Based on this information, it is tempting to speculate that the clumps seen in system 2 may be redder and older (∼Gyr) counterparts of those young candidate globular clusters detected at the much higher redshifts. Another possible explanation, red clumps fitting the description of those seen in system 2 may arise as a result of ram pressure stripping of dwarf galaxies in the dense environments near in projection to its disk (e. g., Mayer et al 2006;Boselli et al 2022). Further follow-up, such as detailed source plane reconstruction and photometric SED modeling, is needed to uncover the nature of these sources.…”

Section: Resultsmentioning

confidence: 99%

Unscrambling the lensed galaxies in JWST images behind SMACS0723

Pascale¹,

Frye²,

Diego³

et al. 2022

Preprint

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The first deep field images from the James Webb Space Telescope (JWST) of the galaxy cluster SMACS J0723.3-7327 reveal a wealth of new lensed images at uncharted infrared wavelengths, with unprecedented depth and resolution. Here we securely identify 14 new sets of multiply imaged galaxies totalling 42 images, adding to the five sets of bright and multiply-imaged galaxies already known from Hubble Space Telescope data. We find examples of arcs crossing critical curves, allowing detailed community follow-up, such as JWST spectroscopy for precise redshift determinations, and measurements of the chemical abundances and of the detailed internal gas dynamics of very distant, young galaxies. One such arc contains compact knots of magnification µ ∼750, and features a microlensed transient. We also detect an Einstein cross candidate only visible thanks to JWST's superb resolution. Our parametric lens model is available through the following link a) , and will be regularly updated using additional spectroscopic redshifts. The model reproduces the multiple images to better than an rms of 0.5 , and allows for accurate magnification estimates of high-redshift galaxies. The intracluster light extends beyond the cluster members, exhibiting large-scale features that suggest a significant past dynamical disturbance. This work represents a first taste of the enhanced power JWST will have for lensing-related science.

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Section: Resultsmentioning

confidence: 99%

Unscrambling the lensed galaxies in JWST images behind SMACS0723

Pascale¹,

Frye²,

Diego³

et al. 2022

Preprint

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“…Most of the gas in the WHIM tends to reside in filaments, and the relatively low density and high temperature makes the gas hard to detect in both emission and absorption. Simulations also show that AGN feedback, stellar winds, and ram pressure stripping can not only affect the thermodynamic properties and spatial distribution of the gas in the cosmic web (see, e.g., Sun et al 2009;Lovisari et al 2015;Lim et al 2018b;Amodeo et al 2021;Schaan et al 2021;Truong et al 2021) but also chemically enrich the circumgalactic medium (CGM) and intergalactic medium (IGM; e.g., Cen & Ostriker 2006;Liang et al 2016;Oppenheimer et al 2016;Rahmati et al 2016;Nelson et al 2018;Boselli et al 2022).…”

Section: Introductionmentioning

confidence: 99%

ELUCID. VII. Using Constrained Hydro Simulations to Explore the Gas Component of the Cosmic Web

Wang

et al. 2022

ApJ

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Using reconstructed initial conditions in the Sloan Digital Sky Survey (SDSS) survey volume, we carry out constrained hydrodynamic simulations in three regions representing different types of the cosmic web: the Coma cluster of galaxies; the SDSS Great Wall; and a large low-density region at z ∼ 0.05. These simulations, which include star formation and stellar feedback but no active galactic nucleus formation and feedback, are used to investigate the properties and evolution of intergalactic and intracluster media. About half of the warm-hot intergalactic gas is associated with filaments in the local cosmic web. Gas in the outskirts of massive filaments and halos can be heated significantly by accretion shocks generated by mergers of filaments and halos, respectively, and there is a tight correlation between the gas temperature and the strength of the local tidal field. The simulations also predict some discontinuities associated with shock fronts and contact edges, which can be tested using observations of the thermal Sunyaev–Zel’dovich effect and X-rays. A large fraction of the sky is covered by Lyα and O vi absorption systems, and most of the O vi systems and low-column-density H i systems are associated with filaments in the cosmic web. The constrained simulations, which follow the formation and heating history of the observed cosmic web, provide an important avenue to interpret observational data. With full information about the origin and location of the cosmic gas to be observed, such simulations can also be used to develop observational strategies.

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“…Star formation is also expected to occur in the meantime (Kapferer et al 2009;Calura et al 2020). If cloudlets such as these are indeed able to survive for such long times and form stars, a rich population of them should be among the inhabitants of galaxy clusters, given the complex processes in which the gas is involved in these environments (Poggianti et al 2019;Boselli et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Young, Blue, and Isolated Stellar Systems in the Virgo Cluster. I. 2D Optical Spectroscopy

Bellazzini

Magrini

Jones

et al. 2022

ApJ

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We use panoramic optical spectroscopy obtained with the Very Large Telescope/MUSE to investigate the nature of five candidate extremely isolated low-mass star-forming regions (Blue Candidates; hereafter, BCs) toward the Virgo cluster of galaxies. Four of the five (BC1, BC3, BC4, and BC5) are found to host several H ii regions and to have radial velocities fully compatible with being part of the Virgo cluster. All the confirmed candidates have mean metallicity significantly in excess of that expected from their stellar mass, indicating that they originated from gas stripped from larger galaxies. In summary, these four candidates share the properties of the prototype system SECCO 1, suggesting the possible emergence of a new class of stellar systems, intimately linked to the complex duty cycle of gas within clusters of galaxies. A thorough discussion of the nature and evolution of these objects is presented in a companion paper, where the results obtained here from the MUSE data are complemented with Hubble Space Telescope (optical) and Very Large Array (Hi) observations.

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Ram pressure stripping in high-density environments

Cited by 141 publications

References 642 publications

Unscrambling the lensed galaxies in JWST images behind SMACS0723

Unscrambling the lensed galaxies in JWST images behind SMACS0723

ELUCID. VII. Using Constrained Hydro Simulations to Explore the Gas Component of the Cosmic Web

Young, Blue, and Isolated Stellar Systems in the Virgo Cluster. I. 2D Optical Spectroscopy

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