Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-05-16
Mon.Not.Roy.Astron.Soc.370:1181-1184,2006
Astronomy and Astrophysics
Astrophysics
16 pages, 2 figures, to be published in MNRAS
Scientific paper
10.1111/j.1365-2966.2006.10557.x
Using EPS we present 13 refined Lick/IDS absorption-line indices for an extensive set of instantaneous-burst binary stellar populations (BSPs) at high resolution (0.3 \AA) of various age and metallicity (1-15Gyr, 0.004-0.03), and 38 indices at intermediate resolution (3 \AA). These indices are obtained by two methods: (1) obtain them by using the empirical fitting functions (FFs method); (2) measure them directly from the synthetic spectra (DC method). Together with our previous paper a database of Lick/IDS spectral absorption-line indices for BSPs at high and intermediate resolutions is provided. This set of indices includes 21 indices of Worthey et al., four Balmer indices defined by Worthey & Ottaviani and 13 indices with the new passband definitions of Trager et al. The full set of synthetic indices and the integrated pseudo-continuum are listed in the Appendix, which is only available online or from our website (http://www.ast9. com/), or on request from the first author. Moreover, the ISEDs can be obtained from our website. We compare the synthetic Lick/IDS indices obtained by FFs method and those by DC method, and find that the discrepancies are significant: Ca4455 (index 6), Fe4668 (8), Mg_b (13), Fe5709 (17), NaD (19), TiO_1 (20) and TiO_2 (21, except for Z=0.02) in the W94 system, Ca4455^T (6^T), C_2 4668^T (8^T), NaD^T (19^T), TiO_1^T (20^T) and TiO_2^T (21^T, except for Z=0.02) in the T98 system obtained by DC method are less (bluer) than the corresponding ones obtained by FFs method for all metallicities. Ca4227 (index 3), Fe5782 (18),Ca4227^T (3^T) and Fe5782^T (18^T) are greater at Z=0.03 and become to be bluer at Z=0.004, Fe5709^T (17^T) index is less at Z=0.03 and becomes to be redder at Z=0.004 than the corresponding ones obtained by FFs method.
Li Lifang
Zhang Fenghui
No associations
LandOfFree
A Library of Lick/IDS Indices for Binary Stellar Populations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Library of Lick/IDS Indices for Binary Stellar Populations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Library of Lick/IDS Indices for Binary Stellar Populations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-276320