Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Blana, Matias"'
Autor:
Galaz, Gaspar, González-López, Jorge, Guzmán, Viviana, Messias, Hugo, Junais, Boissier, Samuel, Epinat, Benoît, Weilbacher, Peter M., Puzia, Thomas, Johnston, Evelyn J., Amram, Philippe, Frayer, David, Blaña, Matías, Howk, J. Christopher, Berg, Michelle, Bustos-Espinoza, Roy, Muñoz-Mateos, Juan Carlos, Cortés, Paulo, García-Appadoo, Diego, Joachimi, Katerine
After over three decades of unsuccessful attempts, we report the first detection of molecular gas emission in Malin 1, the largest spiral galaxy observed to date, and one of the most iconic giant low surface brightness galaxies. Using ALMA, we detect
Externí odkaz:
http://arxiv.org/abs/2410.22230
Autor:
Johnston, Evelyn J., Galaz, Gaspar, Blaña, Matias, Amram, Philippe, Boissier, Samuel, Eigenthaler, Paul, Epinat, Benoît, Junais, Ordenes-Briceño, Yasna, Puzia, Thomas, Weilbacher, Peter M.
Publikováno v:
A&A 686, A247 (2024)
Aims. The central region of the Giant Low Surface Brightness galaxy Malin 1 has long been known to have a complex morphology with evidence of a bulge, disc, and potentially a bar hosting asymmetric star formation. In this work, we use VLT/MUSE data t
Externí odkaz:
http://arxiv.org/abs/2404.04099
Autor:
Feng, Zi-Xuan, Li, Zhi, Shen, Juntai, Gerhard, Ortwin, Saglia, Roberto, Blana, Matias, Li, Hui, Jing, Yingjie
The large-scale gaseous shocks in the bulge of M31 can be naturally explained by a rotating stellar bar. We use gas dynamical models to provide an independent measurement of the bar pattern speed in M31. The gravitational potentials of our simulation
Externí odkaz:
http://arxiv.org/abs/2311.04796
Autor:
Galaz, Gaspar, Frayer, David T., Blaña, Matias, Howk, J. Christopher, Puzia, Thomas, Johnston, Evelyn J., Ordenes-Briceño, Yasna, Church, Sarah, Gil, Santiago, Joachimi, Katerine, Mora, Marcelo
We report on results from GBT/ARGUS $^{12}$CO(1-0) observations for the giant low surface brightness galaxy Malin 1, which allow us to determine an upper limit for its CO mass, and hence its molecular gas mass and molecular gas mass surface density $
Externí odkaz:
http://arxiv.org/abs/2211.04342
The formation and evolutionary history of M31 are closely related to its dynamical structures, which remain unclear due to its high inclination. Gas kinematics could provide crucial evidence for the existence of a rotating bar in M31. Using the posit
Externí odkaz:
http://arxiv.org/abs/2206.10026
Leo T is a gas-rich dwarf located at 414kpc $(1.4R_{\rm vir})$ distance from the Milky Way (MW) and it is currently assumed to be on its first approach. Here, we present an analysis of orbits calculated backward in time for the dwarf with our new cod
Externí odkaz:
http://arxiv.org/abs/2007.11001
Autor:
Gajda, Grzegorz, Gerhard, Ortwin, Blaña, Matías, Zhu, Ling, Shen, Juntai, Saglia, Roberto P., Bender, Ralf
Publikováno v:
A&A 647, A131 (2021)
To understand the history and formation mechanisms of galaxies it is crucial to determine their current multidimensional structure. Here we focus on stellar population properties, such as metallicity and [$\alpha$/Fe] enhancement. We devise a new tec
Externí odkaz:
http://arxiv.org/abs/2005.04052
Autor:
Bhattacharya, Souradeep, Arnaboldi, Magda, Caldwell, Nelson, Gerhard, Ortwin, Blaña, Matías, McConnachie, Alan, Hartke, Johanna, Guhathakurta, Puragra, Pulsoni, Claudia, Freeman, Kenneth C.
Publikováno v:
A&A 631, A56 (2019)
The age-velocity dispersion relation is an important tool to understand the evolution of the disc of the Andromeda galaxy (M31) in comparison with the Milky Way. We use Planetary Nebulae (PNe) to obtain the age-velocity dispersion relation in differe
Externí odkaz:
http://arxiv.org/abs/1909.09724
Autor:
Blaña, Matias, Gerhard, Ortwin, Wegg, Christopher, Portail, Matthieu, Opitsch, Michael, Saglia, Roberto, Fabricius, Maximilian, Erwin, Peter, Bender, Ralf
The Andromeda galaxy (M31) contains a box/peanut bulge (BPB) entangled with a classical bulge (CB) requiring a triaxial modelling to determine the dynamics, stellar and dark matter mass. We construct made-to-measure models fitting new VIRUS-W IFU bul
Externí odkaz:
http://arxiv.org/abs/1808.07494
Autor:
Opitsch, Michael, Fabricius, Maximilian H., Saglia, Roberto P., Bender, Ralf, Blaña, Matias, Gerhard, Ortwin
Publikováno v:
A&A 611, A38 (2018)
As the nearest large spiral galaxy, M31 provides a unique opportunity to learn about the structure and evolutionary history of this galaxy type in great detail. Among the many observing programs aimed at M31 are microlensing studies, which require go
Externí odkaz:
http://arxiv.org/abs/1707.06652