Deep high spectral resolution spectroscopy and chemical composition of ionized nebulae

@article{Esteban2013DeepHS,
  title={Deep high spectral resolution spectroscopy and chemical composition of ionized nebulae},
  author={C{\'e}sar Esteban and Jorge Garc{\'i}a-Rojas and A. Mesa-Delgado and L. Toribio San Cipriano},
  journal={arXiv: Astrophysics of Galaxies},
  year={2013}
}
High spectral resolution spectroscopy has proved to be very useful for the advancement of chemical abundances studies in photoionized nebulae, such as H II regions and planetary nebulae (PNe). Classical analyses make use of the intensity of bright collisionally excited lines (CELs), which have a strong dependence on the electron temperature and density. By using high resolution spectrophotometric data, our group has led the determination of chemical abundances of some heavy element ions, mainly… 

Figures and Tables from this paper

Carbon and oxygen abundances from recombination lines in low-metallicity star-forming galaxies. Implications for chemical evolution

We present deep echelle spectrophotometry of the brightest emission-line knots of the star-forming galaxies He 2 10, Mkn 1271, NGC 3125, NGC 5408, POX 4, SDSS J1253 0312, Tol 1457 262, Tol 1924 416

Carbon and oxygen abundance gradients in NGC 300 and M33 from optical recombination lines

We present deep spectrophotometry of several Hii regions in the nearby low-mass spiral galaxies NGC 300 and M33. The data have been taken with UVES and OSIRIS spectrographs attached to the 8m VLT and

The chemical composition of Galactic ring nebulae around massive stars

We present deep spectra of ring nebulae associated with Wolf-Rayet (WR) and O-type stars: NGC 6888, G2.4+1.4, RCW 58, S 308, NGC 7635 and RCW 52. The data have been taken with the 10m Gran Telescopio

Photoionization modeling of the Galactic planetary nebulae Abell 39NGC7027-1

The main aim of this project is to examine the line ratio of some elements relative to H of planetary nebulae Abell 39 and NGC7027. We used CLO UDY C3.1 codes to obtain the line ratios relative to ,

References

SHOWING 1-10 OF 32 REFERENCES

A reappraisal of the chemical composition of the Orion nebula based on Very Large Telescope echelle spectrophotometry

We present Very Large Telescope (VLT) UVES echelle spectrophotometry of the Orion nebula in the 3100-10 400 A range. We have measured the intensity of 555 emission lines, many of them corresponding

Nebular Abundances from Recombination Lines

Ionic abundances, deduced from intrinsically more reliable optical recombination lines (ORLs) are presented for ten planetary nebulae (PN) and the H II region M 42. For all ionic species studied, the

Properties of the ionized gas in HH 202 – II. Results from echelle spectrophotometry with Ultraviolet Visual Echelle Spectrograph

We present results of deep echelle spectrophotometry of the brightest knot of the Herbig– Haro object HH 202 in the Orion Nebula – HH 202-S – using the Ultraviolet Visual Echelle Spectrograph in the

The Chemical Composition of the Galactic H II Regions M8 and M17. A Revision based on deep VLT Echelle Spectrophotometry

We present new echelle spectrophotometry of the Galactic H II regions M8 and M17. The data have been taken with the VLT UVES echelle spectrograph in the 3100 to 10400 A range. We have measured the

Faint emission lines in the Galactic H II regions M16, M20 and NGC 3603

We present deep echelle spectrophotometry of the Galactic H II regions M16, M20 and NGC 3603. The data have been taken with the Very Large Telescope Ultraviolet-Visual Echelle Spectrograph in the

The Chemical Composition of the 30 Doradus Nebula Derived from Very Large Telescope Echelle Spectrophotometry

Echelle spectrophotometry of the 30 Doradus nebula in the LMC is presented. The data consist of VLT UVES observations in the 3100-10350 Å range. The intensities of 366 emission lines have been

Carbon and Oxygen Galactic Gradients: Observational Values from H II Region Recombination Lines*

We present results of deep echelle spectrophotometry of eight Galactic H II regions located at Galactocentric distances between 6.3 and 10.4 kpc. The data have been taken with the Very Large

Analysis of chemical abundances in planetary nebulae with [WC] central stars - I. Line intensities and physical conditions

Context. Planetary nebulae (PNe) around Wolf-Rayet [WR] central stars ([WR]PNe) constitute a particular photoionized nebula class that represents about 10% of the PNe with classified central stars.

NGC 2579 and the carbon and oxygen abundance gradients beyond the solar circle

We present deep echelle spectrophotometry of the Galactic Hii region NGC 2579. The data have been taken with the Very Large Telescope Ultraviolet-Visual Echelle Spectrograph in the 3550–10400 u

The Localized Chemical Pollution in NGC 5253 Revisited: Results from Deep Echelle Spectrophotometry

We present echelle spectrophotometry of the blue compact dwarf galaxy NGC 5253 obtained with the VLT UVES. We have measured the intensities of a large number of permitted and forbidden emission lines