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Dark matter in ALFALFA galaxies
No full textAims. This paper aims to investigate the galaxy-halo connection using a large sample of individual galaxies with H
The binary ballet: Mapping local expansion around M 81 and M 82
No full textThis study of the M 81 complex and its Hubble flow delivers new and improved tip of the red giant branch (TRGB)-based distances for nine member galaxies, yielding a total of 58 galaxies with high-precision TRGB distances. With those, we perform a systematic analysis of the group’s dynamics in the core and its embedding in the local cosmic environment. Our analysis confirms that the satellite galaxies of the M 81 complex exhibit a flattened, planar distribution almost perpendicular to the supergalactic pole, and thus aligned with a larger-scale filamentary structure in the local Universe. We demonstrate that the properties of the group’s barycentre are robustly constrained by the two brightest members, M 81 and M 82, and that correcting heliocentric velocities for the solar motion in the Local Group decreases the velocity dispersion of the group. Then applying minor and major infall models, we fit the local Hubble flow to constrain the Hubble constant and the total mass of the M 81 complex. The joint best-fit parameters from both models yield H0 = (63±6) km/s/Mpc and a total mass of (2.28 ± 0.49)×1012 M⊙. We thus arrive at an increased mass estimate compared to prior work but reach a higher consistency with virial ((2.74 ± 0.36)×1012 M⊙) and projected ((3.11 ± 0.69)×1012 M⊙) mass estimates. Moreover, our H0 estimate shows an agreement with Planck, consistent with other TRGB-based local-Universe inferences of H0 and still within a 2σ agreement with Cepheid-based local-Universe probes
The SRG/eROSITA All-Sky Survey
No full textWe selected galaxy cluster candidates from the high-redshift (BEST_Z > 0.9) end of the first SRG (Spectrum Roentgen Gamma)/eROSITA All-Sky Survey (eRASS1) galaxy cluster catalogue, for which we obtained moderately deep J-band imaging data with the OMEGA2000 camera at the 3.5 m telescope of the Calar Alto Observatory. We included J-band data of four additional targets obtained with the three-channel camera at the 2 m Fraunhofer telescope at the Wendelstein Observatory. We complemented the new J-band photometric catalogue with forced photometry in the i and z bands of the tenth data release of the Legacy Survey (LS DR10) to derive the radial colour distribution around the eROSITA/eRASS1 clusters. Without assuming a priori to find a cluster red sequence at a specific colour, we tried to find a radially weighted colour over-density to confirm the presence of high-redshift optical counterparts for the X-ray emission. We compared our confirmation with optical properties derived in earlier works based on LS DR10 data to refine the existing high-redshift cluster confirmation of eROSITA-selected clusters. We attempted to calibrate the colour-redshift relation including the new J-band data by comparing our obtained photometric redshift estimate with the spectroscopic redshift of a confirmed, optically selected, high-redshift galaxy cluster. We find a radial over-density of similar coloured galaxies for 12 out of 18 of the selected galaxy cluster candidates for which we also have i-band data. For 9 of these 12, we provide a photometric redshift estimate. We can report an increase in the relative colour measurement precision from 8% to 4% when including J-band data. In conclusion, our findings indicate a not insignificant spurious contaminant fraction at the high-redshift end (BEST_Z > 0.9) of the eROSITA/eRASS1 galaxy cluster catalogue. This underlines the need for wide and deep near-infrared imaging data for the confirmation and characterisation of high-z galaxy clusters
Retraction Notice: Green space: Ensuring a sustainable future through effective urban and environmental management
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Retraction Notice: Cultivation of vegetable (sweet) corn varieties and hybrids as repeated crops in Bukhara
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Retraction Notice: Bio-Inclusive Urban Ecosystems and their Conservation - A Review
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Retraction Notice: Identification of Facial Emotions Using Reinforcement model under Deep Learning
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Retraction Notice: Feature Importance in Machine Learning with Explainable Artificial Intelligence (XAI) for Rainfall Prediction
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Les recommandations de bonne pratique en vue de l’insertion des minivis orthodontiques au niveau de la crête infra-zygomatique
No full textIntroduction : l’objectif de cet article est de présenter un protocole d’étude radiologique en vue de planifier la pose directe des minivis d’ancrage au niveau de la crête infra-zygomatique. Matériels et méthodes : passer en revue les études qui présentent des recommandations et des protocoles d’insertion des minivis au niveau de la crête infra-zygomatique. Faire la synthèse de ces études et présenter une méthode de planification radiologique avec des Cônes Beam. L’intérêt de cette méthode est : 1- localiser le site de forage. 2- mesurer la quantité d’os. 3-définir l’angle d’insertion. 4- sélectionner la minivis adéquate. Conclusion : l’examen Cône Beam est indispensable pour planifier la pose des minivis d’ancrage au niveau de la crête infra-zygomatique. Notre protocole d’étude radiologique permet de rendre compte avec précision du volume osseux disponible pour une implantation sous-sinusale et établir ainsi une stratégie de pose avec plus de stabilité et de sécurité
The ACT bridge census: A search for hot gas between massive galaxy clusters with pair stacking
No full textBaryonic matter only accounts for 5% of the mass-energy density of our universe, where the other 95% is shared between dark energy and dark matter. Measurements of the early universe predict a certain baryon fraction, that is not detected in the later stages of the cosmic evolution, and this discrepancy between predicted and observed baryons is known as the “missing baryon” problem. Cosmological simulations predict that a significant fraction of the missing baryons could be found in the form of the warm–hot intergalactic medium (WHIM) trapped inside large scale structures that constitute the cosmic web. WHIM can be detected using the thermal Sunyaev-Zel’dovich effect, as the amplitude of its spectral distortion scales linearly with the electron pressure integrated along the line of sight. This effect has been extensively used by space and ground based CMB experiments to study clusters and filament candidates. In this work, we present results on the detection of hot gas between pairs of candidate interacting galaxy clusters obtained with the latest high resolution (1.65′), high sensitivity Compton-y maps from ACT. We consider a set of candidate double cluster systems extracted from a preliminary ACT-DR6 catalog of clusters blindly detected with a matched filter approach. We then aligned and stacked these cluster pairs in order to increase the SNR and detect the faint SZ signal due to warm-hot filaments of gas connecting them. This sample focuses on short filaments with a projected length ℓfil < 10 Mpc and typical halo mass M500 ~ 2 × 1014M⊙. Additionally, we study individual pairs of clusters to identify promising candidates for follow-up observations using higher (10 − 20′′) resolution millimeter cameras or X-ray satellites