Person:
Zamorano Calvo, Jaime

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First Name
Jaime
Last Name
Zamorano Calvo
URI
https://hdl.handle.net/20.500.14352/74989
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Físicas
Department
Física de la Tierra y Astrofísica
Area
Astronomía y Astrofísica
Identifiers
UCM identifierORCIDScopus Author IDWeb of Science ResearcherIDDialnet IDGoogle Scholar ID

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19992
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End date: 1999 × Start date: 1999 × Subject: 52 ×

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Now showing 1 - 2 of 2
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    Global velocity field and bubbles in the blue compact dwarf galaxy Mrk 86
    (Monthly notices of the Royal Astronomical Society, 1999) Gil de Paz, Armando; Zamorano Calvo, Jaime; Gallego Maestro, Jesús
    We have studied the velocity field of the blue compact dwarf galaxy Mrk 86 (NGC 2537) using data provided by 14 long-slit optical spectra obtained in 10 different orientations and positions. This kinematical information is complemented with narrow-band ([O III]5007 Å and Hα) and broad-band (B, V, Gunn r and K) imaging. The analysis of the galaxy global velocity field suggests that the ionized gas could be distributed in a rotating inclined disc, with projected central angular velocity of Ω=34 km s^−1 kpc^−1. The comparison between the stellar, H I and modelled dark matter density profile indicates that the total mass within its optical radius is dominated by the stellar component. Peculiarities observed in its velocity field can be explained by irregularities in the ionized gas distribution or local motions induced by star formation. Kinematical evidences for two expanding bubbles, Mrk 86-B and Mrk 86-C, are given. They show expanding velocities of 34 and 17 km s^−1, Hα luminosities of 3×10^38 and 1.7×10^39 erg s^−1, and physical radii of 374 and 120 pc, respectively. The change in the [S II]/Hα, [N II]/Hα, [O II]/[O III] and [O III]/Hβ line ratios with the distance to the bubble precursor suggests a diminution in the ionization parameter and, in the case of Mrk 86-B, an enhancement of the shock-excited gas emission. The optical-near-infrared colours of the bubble precursors are characteristic of low-metallicity star-forming regions (∼0.2 Z_⊙) with burst strengths of about 1 per cent in mass.
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    Survey for emission-line galaxies: Universidad Complutense de Madrid list 3
    (Astrophysical journal supplement series, 1999) Alonso, O.; García Dabó, C. E.; Zamorano Calvo, Jaime; Gallego Maestro, Jesús; Rego Fernández, Manuel
    A new low-dispersion objective-prism search for low-redshift (z<0.045) emission-line galaxies (ELGs) has been carried out by the Universidad Complutense de Madrid using the Schmidt Telescope at the Calar-Alto Observatory. This is a continuation of the UCM Survey, which was performed by visual selection of candidates in photographic plates via the presence of the Hα+[N II] λ6584 blend in emission. In making this new list we have applied an automatic procedure, fully developed by us, for selecting and analyzing ELG candidates on the digitized images obtained with the Machine Automatique à Mesurer pour l'Astronomie (MAMA). The analyzed region of the sky covers 189 deg^2 in nine fields near α=14^h and 17^h, δ=25 ºC. The final sample contains 113 candidates. Special effort has been made to obtain a large amount of information directly from our uncalibrated plates by using several external calibrations. The parameters obtained for the ELG candidates allow us to study the statistical properties of the sample.