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Unraveling the nature of dark matter (DM) stands as a primary objective in modern physics. Here we present evidence suggesting deviations from the collisionless Cold DM (CDM) paradigm. It arises from the radial distribution of stars in six Ultra Fain
Externí odkaz:
http://arxiv.org/abs/2407.16755
Publikováno v:
A&A 690, A151 (2024)
*** Context: The halos of low-mass galaxies may allow us to constrain the nature of dark matter (DM), but the kinematic measurements to diagnose the required properties are technically extremely challenging. However, the photometry of these systems i
Externí odkaz:
http://arxiv.org/abs/2407.16519
Autor:
D'Eugenio, Francesco, Colless, Matthew, van der Wel, Arjen, Vaughan, Sam P., Said, Khaled, van de Sande, Jesse, Bland-Hawthorn, Joss, Bryant, Julia J., Croom, Scott M., Lopez-Sanchez, Angel R., Lorente, Nuria P. F., Maiolino, Roberto, Taylor, Edward N.
We use deep spectroscopy from the SAMI Galaxy Survey to explore the precision of the fundamental plane of early-type galaxies (FP) as a distance indicator for future single-fibre spectroscopy surveys. We study the optimal trade-off between sample siz
Externí odkaz:
http://arxiv.org/abs/2406.17842
Exploratory Data Analysis With MATLAB (3rd ed.) Wendy L. Martinez Angel R. Martinez Jeffery L. Solka
Autor:
Marzjarani, Morteza
Publikováno v:
Technometrics, 2019 Nov 01. 61(4), 565-566.
Externí odkaz:
https://www.jstor.org/stable/45220183
Autor:
Prathap, Jahang, Hopkins, Andrew M., Robotham, Aaron S. G., Bellstedt, Sabine, Afonso, José, Ahmed, Ummee T., Bilicki, Maciej, Bremer, Malcolm N., Brough, Sarah, Brown, Michael J. I., Gordon, Yjan, Holwerda, Benne W., Leahy, Denis, López-Sánchez, Ángel R., Marvil, Joshua R., Mukherjee, Tamal, Prandoni, Isabella, Shabala, Stanislav S., Vernstrom, Tessa, Zafar, Tayyaba
We propose a new method for identifying active galactic nuclei (AGN) in low mass ($\rm M_*\leq10^{10}M_\odot$) galaxies. This method relies on spectral energy distribution (SED) fitting to identify galaxies whose radio flux density has an excess over
Externí odkaz:
http://arxiv.org/abs/2402.11817
Autor:
Zovaro, Henry R. M., Mendel, J. Trevor, Groves, Brent, Kewley, Lisa J., Colless, Matthew, Ristea, Andrei, Cortese, Luca, Oh, Sree, D'Eugenio, Francesco, Croom, Scott M., López-Sánchez, Ángel R., van de Sande, Jesse, Brough, Sarah, Medling, Anne M., Bland-Hawthorn, Joss, Bryant, Julia J.
Galactic fountains driven by star formation result in a variety of kinematic structures such as ionised winds and thick gas disks, both of which manifest as complex emission line profiles that can be parametrised by multiple Gaussian components. We u
Externí odkaz:
http://arxiv.org/abs/2312.03659
According to the current concordance cosmological model, the dark matter (DM) particles are collision-less and produce self-gravitating structures with a central cusp which, generally, is not observed. The observed density tends to a central plateau
Externí odkaz:
http://arxiv.org/abs/2307.01256
Autor:
Desmons, Alice, Brough, Sarah, Martínez-Lombilla, Cristina, De Propris, Roberto, Holwerda, Benne, Sánchez, Ángel R. López
We conduct a comparison of the merging galaxy populations detected by a sample of visual identification of tidal features around galaxies as well as spectroscopically-detected close pairs of galaxies to determine whether our method of selecting mergi
Externí odkaz:
http://arxiv.org/abs/2305.17894