J. Zamorano's research while affiliated with Complutense University of Madrid and other places
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Publications (214)
Recent works have made strong efforts to produce standardised photometry in RGB bands. For this purpose, we carefully defined the transmissivity curves of RGB bands and defined a set of standard sources using the photometric information present in Gaia EDR3. This work aims not only to significantly increase the number and accuracy of RGB standards...
The main interest of the science team for the exploitation of the MEGARA instrument at the 10.4 m Gran Telescopio Canarias (GTC) is devoted to the study of nearby galaxies. The focus lies on researching the history of star formation, and the chemical and kinematical properties of disc systems. We refer to this project as MEGADES: the MEGARA galaxy...
The main interest of the Science Team for the exploitation of the MEGARA instrument at the 10.4m Gran Telescopio Canarias (GTC hereafter) is devoted to the study of nearby galaxies, with focus on the research of the history of star formation, and chemical and kinematical properties of disc systems. We refer to this project as MEGADES: MEGARA Galaxy...
We analyze the outburst experienced by the September $\varepsilon$-Perseid meteor shower on 9 September 2013. As a result of our monitoring the atmospheric trajectory of 60 multi-station events observed over Spain was obtained and accurate orbital data were derived from them. On the basis of these orbits, we have tried to determine the likely paren...
MEGARA (Multi-Espectrografo en GTC de Alta Resolucion para Astronomia) is an optical Integral-Field Unit (IFU) and Multi-Object Spectrograph (MOS) designed for the GTC 10.4m telescope in La Palma that is being built by a Consortium led by UCM (Spain) that also includes INAOE (Mexico), IAA-CSIC (Spain), and UPM (Spain). The instrument is currently f...
Artificial Light at Night (ALAN) may have various environmental impacts ranging from compromising the visibility of astronomical objects to the perturbation of circadian cycles in animals and humans. In the past much research has been carried out to study the impact of ALAN on the radiance of the night sky during clear sky conditions. This was main...
The NIXNOX project, sponsored by the Spanish Astronomical Society, is a Pro-Am collaboration with the aim of finding sites with dark skies. All sky data of the night sky brightness is being obtained by amateur astronomers with Sky Quality Meter (SQM) photometers. We are not looking for remote locations because the places should be easily accessible...
There are some networks of SQM photometers that provide measures of the night sky brightness every night. The analysis of the data provided by the photometers allows the researchers to monitor the nightly, monthly and yearly evolution of the NSB and the relationship with light sources of pollution in intensity and distance. The photometers that are...
Observations reveal a strong structural coupling between bulge and disc in S0
galaxies, which seems difficult to explain if they have formed from supposedly
catastrophic events such as major mergers. We face this question by quantifying
the bulge-disc coupling in dissipative simulations of major and minor mergers
that result in realistic S0s. We ha...
MEGARA (Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía) is the future intermediate-resolution optical Integral-Field Unit (IFU) and Multi-Object Spectrograph (MOS) of the 10.4m GTC telescope. The instrument can be used to observe either a contiguous (100% filling factor) field-of-view of 12.5×11.3 arcsec^{2} or 92 objects anywhere in...
MEGARA (Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía) is an optical Integral-Field Unit (IFU) and Multi-Object Spectrograph (MOS) designed for the GTC 10.4m telescope in La Palma. MEGARA offers two IFU fiber bundles, one covering 12.5x11.3 arcsec2 with a spaxel size of 0.62 arcsec (Large Compact Bundle; LCB) and another one coverin...
The preliminary results of the analysis of a bright fireball observed
over Spain on April 13, 2013 are discussed here. This extraordinary
event, with an absolute magnitude of -13.0±0.5, was
simultaneously observed from 7 meteor observing stations operated by the
SPanish Meteor Network (SPMN) together with its emission spectrum.
Observatorio UCM is one of the nodes of the Spanish Meteor Network
(SPMN), an interdisciplinary research project on interplanetary matter.
Since 2008 we are operating a high sensitivity camera in double station
with UCLM in Toledo, and since 2010 we are operating the full station
with 12 additional cameras. We present the scientific results of the...
We have studied the main evolutionary paths among the galaxy types
residing on the massive end of the Red Sequence and nearby locations on
the Green Valley during the last ~9 Gyr. The morphological and star
formation properties of a sample of these galaxies at 0.3<z<1.5
with stellar masses M_*>5×10^10 M_⊙ have been analysed. We
present direct obser...
MEGARA (Multi Espectrógrafo en GTC de Alta Resolución para
Astronomía) is the new integral field unit (IFU) and multi-object
spectrograph (MOS) instrument for the Gran Telescopio Canarias (GTC).
The selected cryogenic device to harbor the CCD detector for the MEGARA
spectrograph is a liquid nitrogen open-cycle cryostat. The LN2
open-cycle cryostat...
MEGARA (Multi-Espectrógrafo en GTC de Alta Resolución para
Astronomía) is an optical Integral-Field Unit (IFU) and
Multi-Object Spectrograph (MOS) designed for the GTC 10.4 m telescope in
La Palma. Its relatively complex layout makes necessary a set of tools
to facilitate the observation preparation to the user. The MEGARA
Observing Preparation Sof...
LICA (Laboratorio de Instrumentación Científica Avanzada)
is an initiative of the Campus de Excelencia Internacional of UCM. Among
the facilities within LICA, a new laboratory has been assigned to MEGARA
project for subsystem tests and AIV. This paper presents the current
facilities installed at LICA for detector characterization, which will
be use...
Recent studies have argued that galaxy mergers are not important drivers
for the evolution of S0's, on the basis that mergers cannot preserve the
coupling between the bulge and disk scale-lengths observed in these
galaxies and the lack of correlation of their ratio with the S0 Hubble
type. We investigate whether the remnants resulting from collisio...
We analyze the properties of star forming regions in a sample of star
forming galaxies at z=0.84. Star forming regions are extracted from B
band ACS-HST images. Previously we have substracted a model of the
galaxy, fitting a bulge+disk model to the whole galaxy. Special care has
been taken masking the star forming regions in the model fitting
proce...
The aims of this work are: i) Virial masses of UCM survey galaxies from
kinematic study of ionized gas. ii) Calibrations applicables to diferent
redshif surveys. iii) Dynamical masses of UCM survey galaxies from
rotational curves study. iv) Comparison with stellar photometric masses,
calculated from synthesis models population. We have obtained a
r...
MEGARA (Multi-Espectrógrafo en GTC de Alta Resolución para
Astronomía) is an optical Integral-Field Unit (IFU) and
Multi-Object Spectrograph (MOS) designed for the GTC 10.4 m telescope in
La Palma. MEGARA will be a 3rd generation instrument for GTC. It is led
by the University Complutense of Madrid with the collaboration of INAOE,
IAA, UPM and comp...
In this work we study the physical properties of star-forming galaxies
selected in an Hα near-infrared narrow-band survey tuned for
redshift z=0.84 (Villar et al. 2008, 2011). Also, we present a sample at
z˜1 with mass greater than 10^{10} M_{⊙} with Hα
emission. The observations were carried out with WHT/LIRIS (see
Sánchez de Miguel et al. 2011, i...
Luminous Compact Blue Galaxies (LCBGs) are small, but vigorously star
forming galaxies. Their presence at different redshifts denotes their
cosmological relevance and implies that local starburst galaxies, when
properly selected, are unique laboratories for studying the complex
ecosystem of the star formation process over time. We have selected a
r...
In these proceedings we summarize the characteristics and current status of MEGARA, the future optical IFU and MOS for the 10.4 m GTC. MEGARA is being built by a Consortium led by the UCM (Spain) that also includes the INAOE (Mexico), the IAA-CSIC (Spain) and the UPM (Spain). The MEGARA IFU offers two different bundles, one called LCB with a field-...
Some recent observations seem to disagree with hierarchical theories of
galaxy formation on the role of major mergers in a late buildup of
massive early-type galaxies. We re-address this question by analysing
the morphology, structural distortion level, and star formation
enhancement of a sample of massive galaxies (M_*> 5×
10^{10}M_⊙) lying on the...
Our main objective is to determine what kind of galaxies dominate the
cosmic SFR density at z~2. Our sample consists of 24 galaxies in Chandra
Deep Field South, a unique field for the study of galaxy evolution (12
observed with GNIRS/GEMINI and 12 with ISAAC/VLT). We use Hα
together with the already merged X-ray, ultraviolet, optical, near and
mid-...
Recent observations show that inner disks and rings (IDs and IRs) are
not preferentially found in barred galaxies, pointing to the relevance
of formation mechanisms different to the traditional bar-origin
scenario. Nevertheless, the role of minor mergers in the formation of
these inner components (ICs), while often invoked, is still poorly
understo...
Local Luminous Compact Blue Galaxies (LCBG) are the closest counterpart
of the high z outburst population. These objects are crucial as a local
reference for compact star-forming galaxies observed at cosmological
distances. We have obtained 2-D spectroscopy in the 3700-7000 Å
range with PPAK instrument (at 3.5 m CAHA) for a sample of 22 local
LCBG...
LICA-UCM is the brand new laboratory for scientific advanced instrumentation (Laboratorio de Investigacion Cientıfica Avanzada) at Universidad Complutense de Madrid where MEGARA integration will take place.
The potential of the pictures of the Earth taken at night from the
International Space Station (ISS) with a Nikon D3s digital camera to
fight against light pollution is shown. We show that RAW pictures
should be used to obtain fluxes. We have developed a method
to perform absolute photometric calibration measuring fluxes of the
stars recorded...
Introduction: A superbolide was observed on July 21, 2012 over the center and south of Spain. The event was recorded in the framework of our continuous fire-ball monitoring and spectroscopic campaigns. Besides, because of optimal weather conditions, the bolide was imaged from ten meteor observing stations operated by the SPanish Meteor Network (SPM...
Three of our meteor monitoring stations recorded on Oct. 17, 2012, a
mag. -8 NOA fireball. Its emission spectrum was also obtained.
This event is analyzed here.
We present here the analysis of a DAL bolide imaged in the framework of
the continuous fireball monitoring campaign developed by the Spanish
Meteor Network.
We present here a preliminary analysis of some relevant multistation PER
fireball events recorded during 2011 and 2012.
In this work we present the analysis of a bright Geminid bolide
(absolute magnitude -10) observed over southern and central Spain in
2012.
Video recording from the stratosphere using weather balloons is an
excellent technique for meteor research. We have detected 16 possible
Geminids.
The first results of the analysis of a superbolide observed over the
Iberian Peninsula on July 13, 2012, are presented in this work.
In this work we analyze a sporadic fireball recorded on December 28,
2011.
We present here the preliminary analysis of a multi-station October
δ-Aurigid fireball recorded in 2012.
A CCD test-bench has been built at the Universidad Complutensés LICA laboratory. It is initially intended for commissioning of the MEGARA1 (Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía) instrument but can be considered as a general purpose scientific CCD test-bench. The test-bench uses an incandescent broad-band light source in com...
In these proceedings we give a summary of the characteristics and current status of the MEGARA instrument, the future optical IFU and MOS for the 10.4-m Gran Telescopio Canarias (GTC). MEGARA is being built by a Consortium of public research institutions led by the Universidad Complutense de Madrid (UCM, Spain) that also includes INAOE (Mexico), IA...
We present here the analysis of a very bright α-Capricornid
fireball simultaneously registered from three meteor observing stations
on July 31, 2011, with an absolute magnitude of -9.
Using photometric filters improves the detection of fireballs and
meteors, especially under skies with heavy light pollution like at the
Observatorio UCM. We have developed a simulation and pipeline software,
and tested the feasibility of this technique. An experimental device has
been designed and developed. We propose the use of photometric filte...
Introduction: On October 8 th , 2011 the Earth encountered the dust trails left by comet 21P/Giacobini-Zinner during its XIX and XX century perihelion ap-proaches. The encounter was forecasted in great detail [1, 2, 3]. Geometic circumstances were very favour-able to produce a meteor storm, but unfortunately the trails were older than in previous 1...
Introduction: The development of a network of meteor observing stations allows for a continuous monitoring of meteor phenomena. One of the main goals of the SPanish Meteor Network (SPMN) is the analysis of the physico-chemical properties of meteor-oids from multiple station data. This provides useful data to improve our knowledge about meteoroid st...
We use three-dimensional optical spectroscopy observations of a sample of 22 local luminous compact blue galaxies (LCBGs) to create kinematic maps. By means of these, we classify the kinematics of these galaxies into three different classes: rotating disc (RD), perturbed rotation (PR) and complex kinematics (CK). We find 48 per cent are RDs, 28 per...
We present the analysis of the photometric and spectroscopic properties
of a pilot sample of spectroscopically-confirmed intermediate-redshift
blue compact dwarf galaxies (BCDs) located in the Hubble Ultra Deep
Field. We found that applying the classic BCD definition, we recover a
mix of galaxies with a wide range of star-forming activity, metallic...
The most recent data on electricity consumption for public lighting
inSpain is presented and compared with light pollution measurements
asderived from night satellite imagery. NOAA-MSP images
(low-resolution)and higher resolution images obtained with conventional
DSLR cameras on board the International Space Station (ISS) have been
used.We show tha...
The Universidad Complutense of Madrid (UCM) has recently installed a
high sensitivity video system to detect meteors. It is intended to study
the entry in our atmosphere of interplanetary particles of mass greater
than a gram. The station, not fully equipped yet, is a node of the
national Spanish Fireball Network (SPMN) and includes cameras located...
In this work we analyze the star formation rates and stellar masses of a
sample of 157 star forming galaxies at z ˜ 0.84 (Villar et al.
2008), selected by their Hα flux with a narrow band filter. We
compare star formation rates (SFR) measured with different tracers
(Hα, UV and IR) finding that they are in good agreement after
extinction correction,...
In this work we present the results of the spectroscopic analysis in the
near-infrared J band of a sample of 48 star forming galaxies at z =
0.84. Half of the sample was selected by a narrow-band filter tuned to
Hα at that redshift and the other half was selected by photometric
redshifts at the same redshift. We provide Hα luminosities and
star for...
We have obtained both virial and dynamical masses of a sample oflocal
star forming galaxies from the UCM survey. The rotational curvesmeasured
using the kinematics of the ionized gas where used as tracersof the mass
of the system. The goal is to obtain a relationship with fotometric
stellar masses,calculated from population synthesis models, in ord...
In this work we present the results of the spectroscopic analysis inthe
near-infrared K band of a sample of 12 active star forminggalaxies at z
˜ 2. The sample was selected by using photometricredshifts, blue
colors and large fluxes in the 24 μ m band ofMIPS/Spitzer. To analyze
their physical properties we have computedtheir sizes, colors, stellar...
In this contribution we present a summary of the main activities
organized at theUniversidad Complutense de Madrid (UCM) during the the
International year of Astronomy IYA 2009, with the collaboration of the
Department of Astrophysics and the association of astronomy amateurs
ASAAF-UCM.
Since 2006 the SPanish Meteor Network (SPMN) employs high-sensitivity
CCD video cameras to monitor meteor and fireball activity over the
Iberian Peninsula and neighboring areas. These allow us to obtain the
trajectory and orbit for multi-station events and, when combined with
holographic diffraction gratings, also provide information about the
chem...
We use three dimensional optical spectroscopy observations of a sample of 22
local Luminous Compact Blue Galaxies (LCBGs) to create kinematic maps. By means
of these, we classify the kinematics of these galaxies into three different
classes: rotating disk (RD), perturbed rotation (PR), and complex kinematics
(CK). We find 48% are RDs, 28% are PRs,...
This paper presents the opto-mechanical design of a novel spectroscopic
element - sliced pupil grating - that allows increasing the spectral
resolution while keeping the instrument geometry. The concept is based
on "cutting" the pupil into different slices by placing a number of
prisms at the two sites of a VPH grating. The independent beams are
gu...
In this work we analyze the physical properties of a sample of 153 star
forming galaxies at z~0.84, selected by their H-alpha flux with a NB filter.
B-band luminosities of the objects are higher than those of local star forming
galaxies. Most of the galaxies are located in the blue cloud, though some
objects are detected in the green valley and in...
Recent observations show that inner discs and rings (IDs and IRs, henceforth)
are not preferably found in barred galaxies, a fact that points to the
relevance of formation mechanisms different to the traditional bar-origin
scenario. In contrast, the role of minor mergers in the formation of these
inner components (ICs), while often invoked, is stil...
The present work is based on the multi-wavelength catalog of IRAC 3.6+4.5um selected galaxies in the EGS (RA=14h14m, DEC=+53°30') presented in Paper I (Barro et al. 2011, Cat. J/ApJS/193/13). We cross-correlated our IRAC-selected catalog with the X-ray (Chandra) and radio (VLA/20cm) catalogs of Laird et al. (2009, Cat. J/ApJS/180/102) and Ivison et...
Table 1 summarizes the main characteristics of the multi-wavelength data sets in EGS (RA=14:17,DE=+52:30) compiled for this paper to characterize the IRAC-selected sample. (3 data files).
(Abridged) We analyze the evolution of 42 spiral galaxies in the Spitzer
Infrared Nearby Galaxies Survey, using extinction-corrected UV, optical and
near-infrared radial profiles to probe the emission of stars of different ages
as a function of radius. We fit these profiles with models that describe the
chemical and spectro-photometric evolution of...
We present an IRAC 3.6+4.5 microns selected catalog in the Extended Groth
Strip (EGS) containing photometry from the ultraviolet to the far-infrared and
stellar parameters derived from the analysis of the multi-wavelength data. In
this paper, we describe the method used to build coherent spectral energy
distributions (SEDs) for all the sources. In...
I will discuss how the physical properties of dust in nearby galaxies change as we move away from each galaxy's center. Using multi-wavelength data from the Spitzer Infrared Nearby Galaxies survey, we have derived the radial variation of several properties of dust, such as the internal extinction, the dust mass surface density, the abundance of Pol...
UCM Observatory is the urban teaching observatory of Universidad
Complutense de Madrid. In 2010 a fully-equipped fireball detection
station has been completed as a node in the SPanish Meteor and Fireball
Network (SPMN). The station is quasi-automatic and covers the whole sky
with 6 cameras during night and day with a plate scale of ~7
arcmin/pixel....
CBET 2593 available at Central Bureau for Astronomical Telegrams.
Physical properties of the star-forming regions in the local Luminous Compact
Blue Galaxy NGC 7673 are studied in detail using 3D spectroscopic data taken
with the PPAK IFU at the 3.5-m telescope in CAHA. We derive integrated and
spatially resolved properties such as extinction, star formation rate and
metallicity for this galaxy. Our data show an...
CBET 2507 available at Central Bureau for Astronomical Telegrams.
