☆ 4.6 Article

The Herschel Virgo Cluster Survey I. Luminosity function

ASTRONOMY & ASTROPHYSICS (2010)

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ASTRONOMY & ASTROPHYSICS

卷 518, 期 -, 页码 -

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EDP SCIENCES S A

DOI: 10.1051/0004-6361/201014571

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dust, extinction; galaxies: evolution; galaxies: clusters: individual: Virgo

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Astronomy & Astrophysics

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We describe the Herschel Virgo Cluster Survey (HeViCS) and the first data obtained as part of the science demonstration phase (SDP). The data cover a central 4 x 4 sq deg region of the cluster. We use SPIRE and PACS photometry data to produce 100, 160, 250, 350 and 500 mu m luminosity functions (LFs) for optically bright galaxies that are selected at 500 mu m and detected in all bands. We compare these LFs with those previously derived using IRAS, BLAST and Herschel-ATLAS data. The Virgo cluster LFs do not have the large numbers of faint galaxies or examples of very luminous galaxies seen previously in surveys covering less dense environments.

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Summary: We present the first results from the KMOS Ultra-deep Rotation Velocity Survey (KURVS), which examines the outer rotation curves and dark matter content of 22 star-forming galaxies at z similar to 1.5. Using Hα emission, we analyze individual rotation curves to a radius of 4 times the effective radius, finding that most curves are flat or rising between three and six disc scale radii. Our measurements suggest a declining dark matter fraction with increasing stellar mass and stellar mass surface density. The tension with high stellar mass surface density observations indicates a need to reassess baryonic processes in the most massive galaxies.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

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Article Astronomy & Astrophysics

Ageing and quenching through the Ageing Diagram - II. Physical characterization of galaxies

Pablo Corcho-Caballero, Yago Ascasibar, Luca Cortese, Sebastian F. Sanchez, Angel R. Lopez-Sanchez, Amelia Fraser-McKelvie, Tayyaba Zafar

Summary: The relationship between the mechanisms that cause the rapid quenching of star-forming systems and the properties of the overall galaxy population are still difficult to determine. In this study, we investigate the physical properties of galaxies in the MaNGA and SAMI surveys at different stages of their star formation history. By comparing galaxies with recent quenching signatures to the rest of the low star-forming and active population, we find that recently quenched galaxies are compact and low-mass satellite systems with higher metallicities than their long-lived counterparts. This study emphasizes the importance of distinguishing between old and recently quenched galaxies in order to understand the mechanisms driving galaxy evolution.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

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Article Astronomy & Astrophysics

Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C, and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gyr

Francesco D'Eugenio, Arjen van der Wel, Joanna M. Piotrowska, Rachel Bezanson, Edward N. Taylor, Jesse van de Sande, William M. Baker, Eric F. Bell, Sabine Bellstedt, Joss Bland-Hawthorn, Asa F. L. Bluck, Sarah Brough, Julia J. Bryant, Matthew Colless, Luca Cortese, Scott M. Croom, Caro Derkenne, Pieter van Dokkum, Deanne Fisher, Caroline Foster, Anna Gallazzi, Anna de Graaff, Brent Groves, Josha van Houdt, Claudia del P. Lagos, Tobias J. Looser, Roberto Maiolino, Michael Maseda, J. Trevor Mendel, Angelos Nersesian, Camilla Pacifici, Adriano Poci, Rhea-Silvia Remus, Sarah M. Sweet, Sabine Thater, Kim-Vy Tran, Hannah Ubler, Lucas M. Valenzuela, Emily Wisnioski, Stefano Zibetti

Summary: This study presents the first investigation of spatially integrated higher-order stellar kinematics over cosmic time. It reveals that massive galaxies continue to accrete mass and increase their dispersion support after becoming quiescent.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

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Article Astronomy & Astrophysics

Different higher order kinematics between star-forming and quiescent galaxies based on the SAMI, MAGPI, and LEGA-C surveys

Francesco D'Eugenio, Arjen van der Wel, Caro Derkenne, Josha van Houdt, Rachel Bezanson, Edward N. Taylor, Jesse van de Sande, William M. Baker, Eric F. Bell, Joss Bland-Hawthorn, Asa F. L. Bluck, Sarah Brough, Julia J. Bryant, Matthew Colless, Luca Cortese, Scott M. Croom, Pieter van Dokkum, Deanne Fisher, Caroline Foster, Amelia Fraser-McKelvie, Anna Gallazzi, Anna de Graaff, Brent Groves, Claudia del P. Lagos, Tobias J. Looser, Roberto Maiolino, Michael Maseda, J. Trevor Mendel, Angelos Nersesian, Camilla Pacifici, Joanna M. Piotrowska, Adriano Poci, Rhea-Silvia Remus, Gauri Sharma, Sarah M. Sweet, Sabine Thater, Kim-Vy Tran, Hannah Ubler, Lucas M. Valenzuela, Emily Wisnioski, Stefano Zibetti

Summary: This study presents the first statistical analysis of non-Gaussian stellar kinematics spanning 7 billion years in cosmic time. The results show an anticorrelation between the excess kurtosis of the stellar velocity distribution and the rotation-to-dispersion ratio, indicating a physical connection between these two kinematic observables. Additionally, there is a correlation between the excess kurtosis and the stellar mass, potentially linked to the assembly history of galaxies.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

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