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The puzzling interpretation of NIR indices: The case of NaI2.21

Autor: Röck, B., Vazdekis, A., La Barbera, F., Peletier, R. F., Knapen, J. H., Allende-Prieto, C., Aguado, D. S.

We present a detailed study of the Na I line strength index centered in the $K$-band at $22100$, {\AA} (NaI2.21 hereafter) relying on different samples of early-type galaxies. Consistent with previous studies, we find that the observed line strength

Externí odkaz: http://arxiv.org/abs/1708.04638

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UV-extended E-MILES stellar population models: young components in massive early-type galaxies

Autor: Vazdekis, A., Koleva, M., Ricciardelli, E., Röck, B., Falcón-Barroso, J.

Publikováno v: 2016MNRAS.463.3409V

We present UV-extended E-MILES stellar population synthesis models covering the spectral range 1680-50000A at moderately high resolution. We employ the NGSL space-based stellar library to compute spectra of single-age, single-metallicity stellar popu

Externí odkaz: http://arxiv.org/abs/1612.01187

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MILES extended: Stellar population synthesis models from the optical to the infrared

Autor: Röck, B., Vazdekis, A., Ricciardelli, E., Peletier, R. F., Knapen, J. H., Falcon-Barroso, J.

Publikováno v: 2016A&A...589A..73R

We present the first single-burst stellar population models which covers the optical and the infrared wavelength range between 3500 and 50000 Angstrom and which are exclusively based on empirical stellar spectra. To obtain these joint models, we comb

Externí odkaz: http://arxiv.org/abs/1609.05478

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Stellar population synthesis models between 2.5 and 5 {\mu}m based on the empirical IRTF stellar library

Autor: Röck, B., Vazdekis, A., Peletier, R. F., Knapen, J. H., Falcón-Barroso, J.

Publikováno v: MNRAS 449 (2015) 2853-2874

We present the first single-burst stellar population models in the infrared wavelength range between 2.5 and 5 {\mu}m which are exclusively based on empirical stellar spectra. Our models take as input 180 spectra from the stellar IRTF (Infrared Teles

Externí odkaz: http://arxiv.org/abs/1505.01837

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SDC13 infrared dark clouds: Longitudinally collapsing filaments?

Autor: Peretto, N., Fuller, G. A., André, Ph., Arzoumanian, D., Rivilla, V. M., Bardeau, S., Puertas, S. Duarte, Fernandez, J. P. Guzman, Lenfestey, C., Li, G. -X., Olguin, F. A., Röck, B. R., de Villiers, H., Williams, J.

Formation of stars is now believed to be tightly linked to the dynamical evolution of interstellar filaments in which they form. In this paper we analyze the density structure and kinematics of a small network of infrared dark filaments, SDC13, obser

Externí odkaz: http://arxiv.org/abs/1311.0203

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