Stellar Disk Truncations: HI Density and Dynamics

Bibcode
2010AIPC.1240..263T
DOI
10.1063/1.3458507
Trujillo, Ignacio; Bakos, Judit
Bibliographical reference

HUNTING FOR THE DARK: THE HIDDEN SIDE OF GALAXY FORMATION. Edited by Victor P. Debattista and Cristina C. Popescu AIP Conference Proceedings, Volume 1240, pp. 263-266 (2010).

Advertised on:
6
2010
Number of authors
2
IAC number of authors
0
Citations
1
Refereed citations
1
Description
Using HI Nearby Galaxy Survey (THINGS) 21-cm observations of a sample of nearby (nearly face-on) galaxies we explore whether the stellar disk truncation phenomenon produces any signature either in the HI gas density and/or in the gas dynamics. Recent cosmological simulations suggest that the origin of the break on the surface brightness distribution is produced by the appearance of a warp at the truncation position. This warp should produce a flaring on the gas distribution increasing the velocity dispersion of the HI component beyond the break. We do not find, however, any evidence of this increase in the gas velocity dispersion profile.
Type
Non-refereed
Spiral galaxies
Star formation
Cosmology
Spiral galaxies
Star formation
Observational cosmology

It may interest you

  • Non-refereed
    Massive characterisation of subgiants and red giants with TESS (Kepler and Gaia)
    TESS serves as a formidable tool for investigating stellar variability. Nonetheless, the adaptation of methodologies employed in other space missions, such as Kepler, to deduce long stellar rotation periods or solar-like stellar pulsations has been a challenge. The advent of multiple sectors of data for most stars every two years with the extended
    García, Rafael A. et al.

    Advertised on:

    9
    2024
    Bibcode
    2024tkas.confE.123G
    Citations
    0
  • Non-refereed
    Exploring convolutional neural networks for classification and segmentation of evolving granular structures in the solar surface
    Solar granulation is the visible signature of convective cells emerging from the upper convective zone towards the solar surface. High-resolution images have revealed the complexity of the granulation, evidencing special phenomena such as exploding granules or granular lanes, which are known to be directly related to the emergence of small-scale
    Díaz Castillo, Saida Milena et al.

    Advertised on:

    8
    2024
    Bibcode
    2024IAUGA..32P1786D
    Citations
    0
  • Non-refereed
    Outreach and engagement with autonomous telescopes: achievements and future plans
    This contribution highlights the successes of the Liverpool Telescope (LT) outreach programs and present the future of our engagement plans with the LT's partner, the New Robotic Telescope (NRT). Since 2004, the LT has dedicated a considerable amount of observing time to educational and astronomy outreach programs aimed at students, teachers and
    Gutierrez, Carlos

    Advertised on:

    8
    2024
    Bibcode
    2024IAUGA..32P2760G
    Citations
    0