104 citations · 282 across the 11 of their papers we have counts for
11 papers
Once in a blue stream: Detection of recent star formation in the NGC 7241 stellar stream with MEGARA
David Martinez-Delgado, Santi Roca-Fabrega, Armando Gil de Paz +23
In this work we study the striking case of a narrow blue stream around the NGC 7241 galaxy and its foreground dwarf companion. We want to figure out if the stream was generated by…
Mapping the ionized gas of the metal-poor HII galaxy PHL 293B with MEGARA
C. Kehrig, J. Iglesias-Paramo, J. M. Vilchez +14
Here we report the first spatially resolved spectroscopic study for the galaxy PHL293B using the high-resolution GTC/MEGARA IFU. PHL293B is a local, extremely metal-poor, high ioni…
MEGARA-IFU detection of extended HeII4686 nebular emission in the central region of NGC1569 and its ionization budget
Y. D. Mayya, E. Carrasco, V. M. A. Gomez-Gonzalez +21
We here report the detection of extended HeII4686 nebular emission in the central region of NGC1569 using the integral field spectrograph MEGARA at the 10.4-m Gran Telescopio Canar…
MEGARA-GTC Stellar Spectral Library (I)
M. L. García-Vargas, E. Carrasco, M. Mollá +11
MEGARA (Multi Espectr{ó}grafo en GTC de Alta Resoluci{ó}n para Astronom{\'ı}a) is an optical (3650~--~9750Å), fibre-fed, medium-high spectral resolution (R = 6000, 12000, 20000) in…
High-resolution MEGARA IFU spectroscopy and structural analysis of a fast-rotating, disky bulge in NGC 7025
Bililign T. Dullo, Mario Chamorro-Cazorla, Armando Gil de Paz +12
Disky bulges in spiral galaxies are commonly thought to form out of disk materials (mainly) via bar driven secular processes, they are structurally and dynamically distinct from `c…
The expected photometrical characteristics of high redshift spiral galaxies
Mollá M. García-Vargas, M. Martín-Manjón
The star formation and the subsequent metallic enrichment of spiral galaxies, occurring at the early phases of their evolution, produce emission lines whose contribution may change…
PopStar Evolutionary Synthesis Models II: Optical emission-line spectra from Giant H{\sc ii} regions
M. L. Martín-Manjón, M. L. García-Vargas, M. Mollá +1
This is the second paper of a series reporting the results from the PopStar evolutionary synthesis models. Here we present synthetic emission line spectra of H{\sc ii} regions phot…
A new approach in data reduction: proper handling of random errors and image distortions
N. Cardiel, J. Gorgas, J. Gallego +5
Data reduction procedures are aimed to minimize the impact of data acquisition imperfections on the measurement of data properties with a scientific meaning for the astronomer. To…
Chemical Abundances and Ionizing Clusters of HII Regions in the LINER Galaxy NGC 4258
Angeles I. Diaz, Marcelo Castellanos, Elena Terlevich +1
We present long-slit observations in the optical and near infrared of eight HII regions in the spiral galaxy NGC 4258. Six of the observed regions are located in the SE inner spira…
Multiwavelength study of the starburst galaxy NGC7714. I: Ultraviolet-Optical spectroscopy
Rosa M. Gonzalez Delgado, Maria Luisa Garcia-Vargas, Jeff Goldader +2
We have studied the physical conditions in the central 300 pc of the proto-typical starburst galaxy NGC 7714. Our analysis is based on ultraviolet spectroscopy with the HST+GHRS an…
Calcium Triplet Synthesis
M. L. Garcia-Vargas, M. Molla, A. Bressan
We present theoretical equivalent widths for the sum of the two strongest lines of the Calcium Triplet, CaT index, in the near-IR, using evolutionary techniques and the most recent…