Spatial variations in the star formation history of the Large Magellanic Cloud

Bibcode
2009IAUS..256..281G
DOI
10.1017/S1743921308028585
Gallart, Carme; Meschin, Ingrid; Aparicio, Antonio; Stetson, Peter B.; Hidalgo, Sebastián L.
Bibliographical reference

The Magellanic System: Stars, Gas, and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 256, p. 281-286

Advertised on:
3
2009
Number of authors
5
IAC number of authors
4
Citations
2
Refereed citations
1
Description
Based on the quantitative analysis of a set of wide-field color—magnitude diagrams reaching the old main sequence-turnoffs, we present new LMC star-formation histories, and their variation with galactocentric distance. Some coherent features are found, together with systematic variations of the star-formation history among the three fields analyzed. We find two main episodes of star formation in all three fields, from 1 to 4 and 7 to 13 Gyr ago, with relatively low star formation around ≃ 4-7 Gyr ago. The youngest age in each field gradually increases with galactocentric radius; in the innermost field, LMC 0514-6503, an additional star formation event younger than 1 Gyr is detected, with star formation declining, however, in the last ≃ 200 Myr. The population is found to be older on average toward the outer part of the galaxy, although star formation in all fields seems to have started around 13 Gyr ago.
Type
Non-refereed
Galaxies
Magellanic Clouds

It may interest you

  • Non-refereed
    A machine learning method to infer clusters of galaxies mass radial profiles from mock Sunyaev-Zel'dovich maps with The Three Hundred clusters
    Our study introduces a new machine learning algorithm for estimating 3D cumulative radial profiles of total and gas mass in galaxy clusters from thermal Sunyaev-Zel'dovich (SZ) effect maps. We generate mock images from 2522 simulated clusters, employing an autoencoder and random forest in our approach. Notably, our model makes no prior assumptions
    Ferragamo, A. et al.

    Advertised on:

    6
    2024
    Bibcode
    2024EPJWC.29300019F
    Citations
    0
  • Non-refereed
    The European Low Frequency Survey. Observing the radio sky to understand the beginning of the Universe
    In this paper we present the European Low Frequency Survey (ELFS), a project that will enable the detection of primordial B-mode polarization by measuring the Galactic and extra-Galactic foregrounds in the 5- 120 GHz frequency window. Indeed, the main difficulty in measuring the Bmode polarization comes not just from its sheer faintness, but from
    Mennella, A. et al.

    Advertised on:

    6
    2024
    Bibcode
    2024EPJWC.29300031M
    Citations
    0
  • Non-refereed
    Estimation of the hydrostatic-to-lensing mass bias from resolved cluster masses
    We present a study on the bias of hydrostatic masses with respect to lensing mass estimates for a sample of 53 clusters in a redshift range between z = 0.05 and 1.07. The M 500 mass for each cluster was inferred from X-ray and lensing data, without using a priori observable-mass scaling relations. Cluster masses of our reference analysis were
    Muñoz-Echeverría, M. et al.

    Advertised on:

    6
    2024
    Bibcode
    2024EPJWC.29300033M
    Citations
    0