Veronica Firpo

Veronica Firpo
NSF’s National Optical-Infrared Astronomy Research Laboratory · Gemini Observatory

PhD in Astronomy

About

41
Publications
2,339
Reads
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256
Citations
Additional affiliations
December 2020 - present
Gemini Observatory
Position
  • Science Operations Specialist
October 2018 - September 2020
Gemini Observatory
Position
  • Fellow
October 2015 - September 2018
University of La Serena
Position
  • Fellow

Publications

Publications (41)
Preprint
Full-text available
We investigate the ionised gas kinematics, physical properties and chemical abundances of $J142947$, a Green Pea galaxy at $z\sim 0.17$ with strong, double-peak Ly$\alpha$ emission and indirect evidence of Lyman continuum (LyC) escape. Using deep high-dispersion long-slit spectroscopy, we perform a multi-component Gaussian analysis of optical emiss...
Article
Full-text available
Integral field spectroscopy is well known for providing detailed insight of extended sources thanks to the possibility of handling space resolved spectroscopic information. Simple and straightforward analysis such as single line fitting yields interesting results, although it might miss a more complete picture in many cases. Violent star-forming re...
Article
Full-text available
We analyze the molecular gas and dust associated with the infrared dark cloud SDC 341.232-0.268 in order to investigate the characteristics and parameters of the gas, determine the evolutionary status of four embedded EGO candidates, and establish possible infall or outflow gas motions. We base our study on 12 CO(2-1), 13 CO(2-1), and C18 O(2-1) da...
Preprint
Full-text available
An improved high-resolution and deep A$_{Ks}$ foreground dust extinction map is presented for the Galactic disk area within $295^{\circ} \lesssim l \lesssim 350^{\circ}$, $-1.0^{\circ} \lesssim b \lesssim +1.0^{\circ}$. At some longitudes the map reaches up to $|b|\sim2.25^{\circ}$, for a total of $\sim$148 deg$^2$. The map was constructed via the...
Article
Nearby merging pairs are unique laboratories in which one can study the gravitational effects on the individual interacting components. In this manuscript, we report the characterization of selected H ii regions along the peculiar galaxy NGC 2936, member of the galaxy pair Arp 142, an E+S interaction, known as ‘The Penguin’. Using Gemini South spec...
Article
As part of a high-resolution observational study of feeding and feedback processes occurring in the vicinity of the active galactic nucleus in 40 galaxies, we observed the inner 3${^{\prime\prime}_{.}}$5 × 5 arcsec of the nearby spiral and Seyfert 2 galaxy UGC 2024 with the integral field unit of the Gemini-South Telescope. The observations enabled...
Preprint
Full-text available
Integral Field Spectroscopy (IFS) is well known for providing detailed insight of extended sources thanks to the possibility of handling space resolved spectroscopic information. Simple and straightforward analysis such as single line fitting yield interesting results, although it might miss a more complete picture in many cases. Violent star formi...
Preprint
Full-text available
We analyze the molecular gas and dust associated with the infrared dark cloud SDC 341.232-0.268 in order to investigate the characteristics and parameters of the gas, determine the evolutionary status of four embedded EGO candidates and establish possible infall or outflow gas motions. We based our study on $^{12}$CO(2-1), $^{13}$CO(2-1), and C$^{1...
Article
Full-text available
An improved high-resolution and deep A K s foreground dust extinction map is presented for the Galactic disc area within 295 • l 350 • , −1.0 • b +1.0 •. At some longitudes the map reaches up to |b| ∼ 2.25 • , for a total of ∼148 deg 2. The map was constructed via the Rayleigh-Jeans colour excess (RJCE) technique based on deep near-infrared (NIR) a...
Preprint
Full-text available
Nearby merging pairs are unique laboratories in which one can study the gravitational effects on the individual interacting components. In this manuscript, we report the characterization of selected HII regions along the peculiar galaxy NGC 2936, member of the galaxy pair Arp 142, an E+S interaction, known as "The Penguin". Using Gemini South spect...
Article
Full-text available
We present two-dimensional stellar and gaseous kinematics of the inner 0.7 × 1.2 kpc ² of the Seyfert 1.5 galaxy ESO 362-G18, derived from optical (4092–7338 Å) spectra obtained with the GMOS integral field spectrograph on the Gemini South telescope at a spatial resolution of ≈170 pc and spectral resolution of 36 km s ⁻¹ . ESO 362-G18 is a strongly...
Article
Full-text available
Based on the molecular emission in the $^{12}$CO(2-1) and $^{13}$CO(2-1) lines, and the continuum emission in the MIR and FIR towards the S21 IR dust bubble, we analyze the physical characteristics of the gas and dust linked to the nebula and the presence of young stellar objects (YSOs) in its environs. The line emission reveals a clumpy molecular...
Article
Full-text available
Aims. We present a multi-wavelength analysis of the infrared dust bubble S 24, and the extended IR sources G341.220-0.213 and G341.217-0.237 located in its environs, with the aim of investigating the characteristics of the molecular gas and the interstellar dust linked to them, and analyzing the evolutionary state of the young stellar objects ident...
Article
Full-text available
We present a multi-wavelength analysis of the infrared dust bubble S24, and its environs, with the aim of investigating the characteristics of the molecular gas and the interstellar dust linked to them, and analyzing the evolutionary status of the young stellar objects (YSOs) identified there. Using APEX data, we mapped the molecular emission in th...
Article
Full-text available
We are presenting here a study of the cold dust in the infrared ring nebula Gum 31. We aim at deriving the physical properties of the molecular gas and dust associated with the nebula, and investigating its correlation with the star formation in the region, that was probably triggered by the expansion of the ionization front. We use 870 micron data...
Article
Full-text available
VISTA variables in the Via Lactea is an ESO Public survey dedicated to scan the bulge and an adjacent portion of the Galactic disk in the fourth quadrant using the VISTA telescope and the near-infrared camera VIRCAM. One of the leading goals of the VVV survey is to contribute to the knowledge of the star cluster population of the Milky Way. To impr...
Conference Paper
Full-text available
We report on the development of an extinction map for the Southern Galactic disk based on the combination of Near-Infrared (NIR) observations of the ESO public survey VISTA Variables in the Milky Way (VVV), complemented with GLIMPSE and 2MASS data. The 520 deg{^2} observed by VVV in 5 near infrared bands (J, H, K_{s}, Y, Z), and multiple epochs, ar...
Article
Full-text available
X-shooter and WHT-ISIS spectra of the star-forming galaxy PHL 293B also known as A2228-00 and SDSS J223036.79-000636.9 are presented in this paper. We find broad (FWHM = 1000 km s−1) and very broad (FWZI = 4000 km s−1) components in the Balmer lines, narrow absorption components in the Balmer series blueshifted by 800 km s−1, previously undetected...
Conference Paper
Full-text available
Based on molecular line and dust continuum data obtained with the APEX telescope, and IR images at different wavelengths, we investigate the gas and dust distributions in the environs of the IR dust bubble S 24 and determine the main physical parameters of the molecular gas. The IR dust bubble S 24 is a full filamentary shell detected in the IRAC e...
Conference Paper
Full-text available
We present results from a study of a sample of small star clusters associated to dusty globules and bright-rimmed clouds that have been observed under ESO/Chile public infrared survey Vista Variables in the Vía Láctea (VVV). In this short communication, we analyse the near-infrared properties of a set of four small clusters candidates associated to...
Article
Full-text available
Aims: With the aim of investigating the presence of molecular and dust clumps linked to two star forming regions identified in the expanding molecular envelope of the stellar wind bubble RCW 78, we analyzed the distribution of the molecular gas and cold dust. Methods: To accomplish this study we performed dust continuum observations at 870 μm and 1...
Article
Full-text available
With the aim of investigating the presence of molecular and dust clumps linked to two star forming regions identified in the expanding molecular envelope of the stellar wind bubble RCW78, we analyzed the distribution of the molecular gas and cold dust. To accomplish this study we performed dust continuum observations at 870 \mu m and 13CO(2-1) line...
Conference Paper
Full-text available
Churchwell et al. (2006) identified many IR dust bubbles in the GLIMPSE images at 8 μm. Among these bubbles, S21, S22, S23, and S24 conform a poorly studied complex plenty of small scale bubbles, with IRDCs and signposts of recent star formation, located at about 4.5 kpc. Based on 12CO(2-1), 13CO(2-1), and 13CO(3-2) line observations obtained with...
Conference Paper
Full-text available
We report the results of the most recent seeing feasibility study performed in the region of Cerro Champaqui (2800m) at the mountain range of Sierras Grandes at the Province of Cordoba. We also describe the high frequency DIMM device built for this and other seeing samplings obtained at the provinces of San Juan; San Luis and Cordoba. This work is...
Article
Full-text available
Deep, high resolution spectroscopic observations have been obtained for six compact, strongly star-forming galaxies at redshift z~0.1-0.3, most of them also known as Green Peas. Remarkably, these galaxies show complex emission-line profiles in the spectral region including H\alpha, [NII]$\lambda\lambda 6548, 6584$ and [SII]$\lambda\lambda 6717, 673...
Article
We present a detailed study of the physical properties of the nebular material in four star-forming knots of the blue compact dwarf galaxy Haro 15. Using long-slit and echelle spectroscopy obtained at Las Campanas Observatory, we study the physical conditions (electron density and temperatures), ionic and total chemical abundances of several atoms,...
Conference Paper
Full-text available
The most intense star-forming regions in the galaxy Haro 15 show a peculiar kinematic behavior in our high resolution spectra which provided information regarding the motion of the individual knots in the galaxy potential. We focus our study in their kinematic structure with the purpose of distinguishing the presence of different components which c...
Article
We analyse high signal-to-noise ratio spectrophotometric observations acquired simultaneously with TWIN, a double-arm spectrograph, from 3400 to 10 400 Å of three star-forming regions in the H ii galaxy SDSS J165712.75+321141.4. We have measured four line temperatures –Te([O iii]), Te([S iii]), Te([O ii]) and Te([S ii]) – with high-precision, rms e...
Article
Using echelle spectroscopy, obtained at Las Campanas Observatory, we present a detailed study of the internal kinematics of the nebular material in multiple knots of the blue compact dwarf galaxy Haro 15. A detailed analysis of the complex emission-line profiles shows the presence of an underlying broad component in almost all knots, and the bright...
Thesis
Full-text available
In this thesis we presented a detailed spectroscopic study in a sample of Giant HII Regions in galaxies visible from Southern Hemisphere. This thesis is mainly composed of three chapters already published: Chapter 2: 2010MNRAS.406.1094F, Chapter 3: 2011MNRAS.414.3288F, Chapter 4: 2012MNRAS.422.3475H
Article
Full-text available
Using echelle spectroscopy, obtained at Las Campanas Observatory, we present a detailed study of the internal kinematics of the nebular material in multiple knots of the blue compact dwarf galaxy Haro 15. A detailed analysis of the complex emission line profiles show the presence of an underlying broad component in almost all knots, and the brighte...
Conference Paper
Full-text available
We present a detailed study of the kinematic and physical properties of the ionized gas in multiple knots of the blue compact dwarf galaxy Haro 15. Using echelle and long slit spectroscopy data, obtained with different instruments at Las Campanas Observatory, we study the internal kinematic and physical conditions (electron density and temperature)...
Article
We present new results from our search for giant H ii regions in galaxies visible from the Southern hemisphere. In this work we study two galaxies: NGC 7479 and NGC 6070. Using high-resolution spectra, obtained with different instruments at Las Campanas Observatory, we are able to resolve the emission-line profile widths and determine the intrinsic...
Conference Paper
Full-text available
We present a detailed study of the physical properties of the nebular material in multiple knots of the blue compact dwarf galaxy Haro 15. Using long slit and echelle spectroscopy, obtained at Las Campanas Observatory, we study the physical conditions (electron density and temperature), ionic and total chemical abundances of several atoms, reddenin...
Conference Paper
Full-text available
Giant H II Regions (GH IIR) provide the link between the formation of massive stars at smaller scales and the violent processes of star formation that happen in starburst galaxies. This work aims to discover the presence of GH IIR in spiral and blue compact dwarf (BCD) galaxies and to analyze the properties of the ionized gas in order to determine...
Conference Paper
Full-text available
The present work aims to discover the presence of Giant H II Regions (GH IIR) in spiral galaxies of the southern hemisphere sky. We have obtained data of eight luminous H II regions in the galaxies NGC 7552, NGC 6070 and NGC 2997 using the Magellan Inamori Kyocera Echelle spectrograph (MIKE) at the Clay Magellan Telescope (LCO), covering the spectr...
Article
We present results of a search for giant H ii regions in southern galaxies. Using high-resolution spectra, obtained with the Magellan Inamori Kyocera Echelle (MIKE) at the Las Campanas Magellan II telescope, we were able to resolve the emission-line profiles and determine the intrinsic velocity dispersion of the ionized gas. Out of four observed re...
Conference Paper
Full-text available
The present work aims to confirm the presence of Giant H II Regions (GH IIR) in spiral galaxies of the southern hemisphere sky. We have obtained data of four luminous H II regions in the galaxies NGC 7552 and NGC 2997, using the Magellan Inamori Kyocera Echelle spectrograph (MIKE) at the Clay Magellan Telescope (LCO), covering the spectral range 35...

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