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Viviana Gabriela Guzman Veloso

Assistant Professor

Pontificia Universidad Católica de Chile

Santiago, Chile

Astrochemistry as a tool to study star and planet formation. Chemistry of the gas in photodissociation regions and protoplanetary disks. Single-dish and interferometric (sub-)millimeter observations of astronomical sources.

Astronomy and astrophysics, UNIVERSITE PIERRE ET MARIE CURIE-PARIS VI. Francia, 2013
Ciencias, Mención astronomía, UNIVERSIDAD DE CHILE. Chile, 2010
Ciencias, Mención astronomía, UNIVERSIDAD DE CHILE. Chile, 2007

Postdoctoral fellow Full Time

HARVARD UNIVERSITY

Cambridge, Estados Unidos

2014 - 2016
Research Associate Full Time

ATACAMA LARGE MILLIMETER ARRAY (ALMA)

Santiago, Chile

2016 - 2018
Assistant Professor Full Time

PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE

Física

Santiago, Chile

2018 - At present

Undergraduate students:
Javiera Díaz (2019B)
Claudio Hernández (2020A)
Alvaro Toro (2020A)
Lucas Soazo (2020B)
Yanina Morales (expected to graduate 2021A)

Master students:
Michel Maluenda (expected to graduate 2021B)
Daniela Soto (expected to graduate 2021A)
Javiera Díaz (expected to graduate 2021B)
Jaime Castillo (expected to graduate 2021B)

PhD students:
Catalina Labayru (2020 - 2023)
Sergio Best (2020 - 2023)
Claudio Hernández (2021 - 2024)

Postdocs:
Elizabeth Artur de la Villarmois (Fondecyt fellow, 2020 - 2022)


Understanding spatially unresolved measurements of molecular line emission Zakardjian, A; Hughes A.; Pety J.; Gerin M.; Beslic, I; Einig, L; Orkisz J.H.; Palud, P; Santa-Maria, MG; Segal, L; et al. Article ISI SCOPUS Astronomy and Astrophysics (2025)
A Dust-trapping Ring in the Planet-hosting Disk of Elias 2-24 Carvalho A.S.; Perez L.M.; Sierra A.; Mellado, MJ; Hillenbrand L.A.; Andrews S.; Benisty M.; Birnstiel T.; Carpenter J.M.; Guzman V.V.; et al. Article ISI SCOPUS Astrophysical Journal (2024)
Bias versus variance when fitting multi-species molecular lines with a non-LTE radiative transfer model Application to the estimation of the gas temperature and volume density Roueff A.; Pety J.; Gerin M.; Ségal, LE; Goicoechea J.R.; Liszt H.S.; Gratier P.; Beslic, I; Einig, L; Gaudel M.; et al. Article ISI SCOPUS Astronomy and Astrophysics (2024)
Chemistry in Externally FUV-irradiated Disks in the Outskirts of the Orion Nebula Cluster Díaz-Berríos, JK; Guzman V.V.; Walsh C.; Öberg, KI; Cleeves L.I.; de la Villarmois, EA; Carpenter J. Article ISI SCOPUS Astrophysical Journal (2024)
Detection of Dimethyl Ether in the Central Region of the MWC 480 Protoplanetary Disk Yamato Y.; Aikawa Y.; Guzman V.V.; Furuya K.; Notsu, S; Cataldi G.; Oeberg, KI; Qi, CH; Law C.J.; Huang, JE; et al. Article ISI SCOPUS Astrophysical Journal (2024)
Exploring the Complex Ionization Environment of the Turbulent DM Tau Disk Long, DE; Cleeves L.I.; Adams F.C.; Andrews S.; Bergin E.A.; Guzman V.V.; Huang J.; Hughes A.M.; Qi, CH; Schwarz K.; et al. Article ISI SCOPUS Astrophysical Journal (2024)
First Detection of Molecular Gas in the Giant Low Surface Brightness Galaxy Malin 1 Galaz, Gaspar; Gonzalez-Lopez, Jorge; Guzman, Viviana; Messias, Hugo; Junais, Samuel; Boissier, Samuel; Epinat, Benoit; Weilbacher, Peter M.; Puzia, Thomas; Johnston, Evelyn J.; et al. Article ISI SCOPUS Astrophysical Journal Letters (2024)
JWST-MIRI Spectroscopy of Warm Molecular Emission and Variability in the AS 209 Disk Muñoz-Romero, CE; Öberg, KI; Banzatti A.; Pontoppidan, KM; Andrews S.M.; Wilner D.J.; Bergin E.A.; Czekala I.; Law C.J.; Salyk, C.; et al. Article ISI SCOPUS Astrophysical Journal (2024)
Quantifying the informativity of emission lines to infer physical conditions in giant molecular clouds: I. Application to model predictions Einig, L; Palud, P; Roueff A.; Pety J.; Bron E.; Le Petit F.; Gerin M.; Chanussot J.; Chainais P.; Thouvenin, PA; et al. Article ISI SCOPUS Astronomy and Astrophysics (2024)
Radial and Vertical Constraints on the Icy Origin of H2CO in the HD 163296 Protoplanetary Disk Hernández-Vera, C; Guzman V.V.; de la Villarmois, EA; Öberg, KI; Cleeves L.I.; Hogerheijde M.R.; Qi, CH; Carpenter J.; Fayolle, EC Article ISI SCOPUS Astrophysical Journal (2024)
Toward a robust physical and chemical characterization of heterogeneous lines of sight: The case of the Horsehead nebula Segal, L; Roueff A.; Pety J.; Gerin M.; Roueff E.; Goicoechea J.R.; Beslic, I; Coudé, S; Einig, L; Mazurek, H; et al. Article ISI SCOPUS Astronomy and Astrophysics (2024)
VLT/MUSE Detection of Accretion/Ejection Associated with the Close Stellar Companion in the HT Lup System Jorquera S.; Bonnefoy M.; Perez L.M.; Chauvin G.; Aguinaga, A; Dougados C.; Julo, R; Demars, D; Andrews S.M.; Ricci L.; et al. Article ISI SCOPUS Astrophysical Journal (2024)
The extremely sharp transition between molecular and ionized gas in the Horsehead nebula Hernández-Vera, C; Guzmán, V. V; Goicoechea, J. R.; Maillard, V.; Pety J.; Le Petit F.; Gerin M.; Bron E.; Roueff E.; Abergel A.; et al. Article ISI SCOPUS Astronomy and Astrophysics (2023)
The Perseus ALMA Chemical Survey (PEACHES) III. Sulfur-bearing species tracing accretion and ejection processes in young protostars de la Villarmois, E. Artur; Guzmán, V. V; Yang, Y. -l.; Zhang Y.; Sakai N. Article ISI SCOPUS Astronomy and Astrophysics (2023)
Physical properties of accretion shocks toward the Class I protostellar system Oph-IRS 44 de la Villarmois, E. Artur; Guzmán, V. V; Jorgensen, J. K.; Kristensen, L. E.; Bergin, E. A.; Harsono D.; Sakai N.; van Dishoeck, E. F.; Yamamoto S. Article ISI Astronomy and Astrophysics (2022)
C18O, 13CO, and 12CO abundances and excitation temperatures in the Orion B molecular cloud: Analysis of the achievable precision in modeling spectral lines within the approximation of the local thermodynamic equilibrium Roueff A.; Gerin M.; Gratier P.; Levrier F.; Pety J.; Gaudel M.; Goicoechea J.R.; Orkisz J.H.; De Souza Magalhaes V.; Vono M.; et al. Article ISI Astronomy and Astrophysics (2021)
Dynamical Masses and Stellar Evolutionary Model Predictions of M Stars Pegues, Jamila; Czekala, Ian; Andrews, Sean M.; Wilner, David J. Article ISI Astrophysical Journal (2021)
Molecules with ALMA at Planet-forming Scales (MAPS). I. Program Overview and Highlights Andrews, Sean M.; Qi, Chunhua; Wilner, David J. Article ISI Astrophysical Journal, Supplement Series (2021)
Molecules with ALMA at Planet-forming Scales (MAPS). VI. Distribution of the Small Organics HCN, C2H, and H2CO Andrews, Sean M.; Wilner, David J. Article ISI Astrophysical Journal, Supplement Series (2021)
Molecules with ALMA at Planet-forming Scales (MAPS). XI. CN and HCN as Tracers of Photochemistry in Disks Bergner, Jennifer B.; Oberg, Karin I.; Guzmán, Viviana V.; Law, Charles J.; Loomis, Ryan A.; Cataldi, Gianni; Bosman, Arthur D.; Aikawa, Yuri; Andrews, Sean M.; Bergin, Edwin A.; et al. Article ISI Astrophysical Journal, Supplement Series (2021)
Quantitative inference of the H2column densities from 3 mm molecular emission: Case study towards Orion B Gratier P.; Pety J.; Bron E.; Roueff A.; Orkisz J.H.; Gerin M.; De Souza Magalhaes V.; Gaudel M.; Vono M.; Bardeau S.; et al. Article ISI Astronomy and Astrophysics (2021)
The TW Hya Rosetta Stone Project. II. Spatially Resolved Emission of Formaldehyde Hints at Low-temperature Gas-phase Formation Blake, Geoffrey A.; Calahan, Jenny K.; van Dishoeck, Ewine F.; Qi, Chunhua; Wilner, David J. Article ISI Astrophysical Journal (2021)
The TW Hya Rosetta Stone Project. III. Resolving the Gaseous Thermal Profile of the Disk Bergin, Edwin; Zhang Ke; Cleeves, Ilsedore; Bergner, Jennifer; Blake, Geoffrey A.; R. Hogerheijde, Michiel; Loomis, Ryan; Qi, Charlie; van Dishoeck, Ewine F.; van Scheltinga, Jeroen Terwisscha; et al. Article ISI Astrophysical Journal (2021)
Tracers of the ionization fraction in dense and translucent gas: I. Automated exploitation of massive astrochemical model grids Bron E.; Roueff E.; Gerin M.; Pety J.; Gratier P.; Le Petit F.; Guzman V.; Orkisz J.H.; De Souza Magalhaes V.; Gaudel M.; et al. Article ISI Astronomy and Astrophysics (2021)
An ALMA Survey of H2CO in Protoplanetary Disks Gal R.L.; Andrews, S. M.; Blake, G. A.; Williams, J. P. Article ISI SCOPUS ASTROPHYSICAL JOURNAL (2020)
An Evolutionary Study of Volatile Chemistry in Protoplanetary Disks Bergner, Jennifer B.; Bergin, Edwin A.; Andrews, Sean M.; Blake, Geoffrey A.; Qi, Chunhua; Schwarz, Kamber R.; Wilner, David J. Article ISI Astrophysical Journal (2020)
Effect of Feedback of Massive Stars in the Fragmentation, Distribution, and Kinematics of the Gas in Two Star-forming Regions in the Carina Nebula GuzmÃ¡n A.E.; Medina S.N.X.; Green A.J.; Burton M.G. Article ISI Astrophysical Journal (2020)
The Disk Substructures at High Angular Resolution Project (DSHARP). II. Characteristics of Annular Substructures (vol 869, L42, 2018) Andrews, Sean M.; Birnstiel, Tilman; Hughes, A. Meredith; Weaver, Erik; Wilner, David J. Article ISI Astrophysical Journal Letters (2020)
The TW Hya Rosetta Stone Project. I. Radial and Vertical Distributions of DCN and DCO+ ÃƒÂ–berg K.I.; Cleeves L.I.; Bergner J.B.; Cavanaro J.; Teague R.; Huang J.; Loomis R.A.; Bergin E.A.; Blake G.A.; Calahan J.; et al. Article ISI Astronomical Journal (2020)
A dynamically young, gravitationally stable network of filaments in Orion B Languignon, David Article ISI SCOPUS ASTRONOMY & ASTROPHYSICS (2019)
Abundances of sulphur molecules in the Horsehead nebula First NS+ detection in a photodissociation region RiviÃ¨re-Marichalar P.; Fuente A.; Pety J.; Wakelam V. Article ISI SCOPUS ASTRONOMY & ASTROPHYSICS (2019)
Detection of Phosphorus-bearing Molecules toward a Solar-type Protostar berg K.I.; Rice T.S. Article ISI SCOPUS ASTROPHYSICAL JOURNAL LETTERS (2019)
Oxygen fractionation in dense molecular clouds Loison, Jean-Christophe; Wakelam, Valentine; Hickson, Kevin M; Bacmann, Aurore; Agùndez, Marcelino; Marcelino, Nuria; Cernicharo, Jose; Guzman, Viviana; Petit, Franck Le; Fuente, Asunción; et al. Article ISI SCOPUS MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)
Upper limits on CH3OH in the HD 163296 protoplanetary disk Evidence for a low gas-phase CH3OH-to-H2CO ratio Carney, MT; Hogerheijde M.R.; Walsh C.; Öberg, KI; Fayolle, EC; Carpenter J.M. Article ISI ASTRONOMY & ASTROPHYSICS (2019)
A gap in the planetesimal disc around HD 107146 and asymmetric warm dust emission revealed by ALMA Wyatt M.C.; Booth M.; Faramaz V.; Hughes A.M.; Kennedy G.M.; Matrà, L; Corder S. Article ISI SCOPUS MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)
A Survey of CH3CN and HC3N in Protoplanetary Disks Bergner J.B.; Öberg, KI; Pegues J. Article ISI SCOPUS ASTROPHYSICAL JOURNAL (2018)
Chemistry of the High-mass Protostellar Molecular Clump IRAS 16562-3959 Article ISI SCOPUS Astrophysical Journal, Supplement Series (2018)
Clustering the Orion B giant molecular cloud based on its molecular emission Daudon, C; Pety J.; Levrier F.; Gerin M.; Gratier P.; Orkisz J.H.; Guzman V.; Bardeau S.; Goicoechea J.R.; Liszt H.; et al. Article ISI SCOPUS ASTRONOMY & ASTROPHYSICS (2018)
Constraining Gas-phase Carbon, Oxygen, and Nitrogen in the IM Lup Protoplanetary Disk Öberg, KI; Wilner D.J.; Andrews S.M. Article ISI SCOPUS ASTROPHYSICAL JOURNAL (2018)
H2CO Ortho-to-para Ratio in the Protoplanetary Disk HD 163296 Öberg, KI; Qi C.; Pagues, J Article ISI SCOPUS ASTROPHYSICAL JOURNAL (2018)
Kinematics of the Horsehead Nebula and IC 434 Ionization Front in CO and C Chambers, E Article ISI SCOPUS ASTRONOMICAL JOURNAL (2018)
Pillars of Creation among Destruction: Star Formation in Molecular Clouds near R136 in 30 Doradus Article ISI SCOPUS ASTROPHYSICAL JOURNAL (2018)
Study of the formation of interstellar CF+ from the HF + C+ -> CF+ + H reaction Inostroza N. Article ISI SCOPUS MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)
The Disk Substructures at High Angular Resolution Program (DSHARP). VIII. the Rich Ringed Substructures in the AS 209 Disk Andrews, S. M.; Carpenter, J. M.; Dullemond, C. P.; Zhu Z.; Bai X.N. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Disk Substructures at High Angular Resolution Project (DSHARP). I. Motivation, Sample, Calibration, and Overview Andrews, S. M.; Dullemond, C. P.; Carpenter, J. M.; Zhu Z.; Bai X.N. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Disk Substructures at High Angular Resolution Project (DSHARP). II. Characteristics of Annular Substructures Andrews, S. M.; Dullemond, C. P.; Zhu Z.; Bai X.N.; Carpenter, J. M. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Disk Substructures at High Angular Resolution Project (DSHARP). III. Spiral Structures in the Millimeter Continuum of the Elias 27, im Lup, and WaOph 6 Disks Andrews, S. M.; Zhu Z.; Dullemond, C. P.; Bai X.N.; Carpenter, J. M.; Ã?berg K.I. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Disk Substructures at High Angular Resolution Project (DSHARP). IV. Characterizing Substructures and Interactions in Disks around Multiple Star Systems Kurtovic, Nicolas T.; Perez, Laura M.; Zhang, Shangjia; Andrews, Sean M.; Dullemond, Cornelis P.; Isella, Andrea; Bai, Xue-Ning; Carpenter, John M.; Ricci, Luca; Wilner, David J. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Disk Substructures at High Angular Resolution Project (DSHARP). IX. A High-definition Study of the HD 163296 Planet-forming Disk Andrews, S. M.; Dullemond, C. P.; Zhu Z.; Bai X.N.; Carpenter, J. M. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Disk Substructures at High Angular Resolution Project (DSHARP). VI. Dust Trapping in Thin-ringed Protoplanetary Disks Dullemond, C. P.; Andrews, S. M.; Zhu Z.; Bai X.N.; Carpenter, J. M. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Disk Substructures at High Angular Resolution Project (DSHARP). VII. the Planet-Disk Interactions Interpretation Zhu Z.; Andrews, S. M.; Dullemond, C. P.; Carpenter, J. M.; Baruteau C.; Bai X.N. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Disk Substructures at High Angular Resolution Project (DSHARP). X. Multiple Rings, a Misaligned Inner Disk, and a Bright Arc in the Disk around the T Tauri star HD 143006 Andrews, S. M.; Dullemond, C. P.; Kurtovic N.T.; Zhu Z.; Carpenter, J. M.; Bai X.N. Article ISI SCOPUS Astrophysical Journal Letters (2018)
The Distribution and Excitation of CH3CN in a Solar Nebula Analog Öberg, KI; Bergner J.; Furuya K.; Walsh C. Article ISI SCOPUS ASTROPHYSICAL JOURNAL (2018)
An ALMA Survey of DCN/H 13 CN and DCO + /H 13 CO + in Protoplanetary Disks Huang, Jane; Aikawa, Yuri; Furuya, Kenji; Guzmán, Viviana V.; Loomis, Ryan A. Article ASTROPHYSICAL JOURNAL (2017)
Dissecting the molecular structure of the Orion B cloud: insight from principal component analysis Gratier, Pierre; Bron, Emeric; Gerin, Maryvonne; Orkisz, Jan; Bardeau, Sébastien; Goicoechea, Javier R.; Le Petit, Franck; Liszt, Harvey; Öberg, Karin; Peretto, Nicolas; et al. Article ASTRONOMY & ASTROPHYSICS (2017)
First Detection of Interstellar S2H Le Gal R.; Martín-Doménech, R; Loison, J-C; Caro, GMM Article ISI SCOPUS Astrophysical Journal Letters (2017)
H2CO Distribution and Formation in the TW HYA Disk Guzmán, Viviana V.; Merchantz, Christopher J.; Cleeves, L. Ilsedore; Huang, Jane; Loomis, Ryan A.; Brinch, Christian Article ISI ASTROPHYSICAL JOURNAL (2017)
Nitrogen Fractionation in Protoplanetary Disks from the (HCN)-C-13/(HCN)-N-15 Ratio Guzmán, V. V; Loomis R. Article ISI SCOPUS ASTROPHYSICAL JOURNAL (2017)
The anatomy of the OrionB giant molecular cloud: A local template for studies of nearby galaxies Guzmán, Viviana V.; Orkisz, Jan H.; Liszt, Harvey S.; Gerin, Maryvonne; Bron, Emeric; Bardeau, Sébastien; Goicoechea, Javier R.; Gratier, Pierre; Le Petit, Franck; Levrier, François; et al. Article ISI SCOPUS ASTRONOMY & ASTROPHYSICS (2017)
Turbulence and star formation efficiency in molecular clouds: solenoidal versus compressive motions in Orion B Orkisz, Jan H.; Gerin, Maryvonne; Bron, Emeric; Guzmán, Viviana V.; Bardeau, Sébastien; Goicoechea, Javier R.; Gratier, Pierre; Le Petit, Franck; Levrier, François; Liszt, Harvey; et al. Article ISI SCOPUS ASTRONOMY & ASTROPHYSICS (2017)
CYANIDE PHOTOCHEMISTRY AND NITROGEN FRACTIONATION IN THE MWC 480 DISK Guzmán, V. V; Loomis R. Article ASTROPHYSICAL JOURNAL (2015)
THE DISTRIBUTION AND CHEMISTRY OF H2CO IN THE DM TAU PROTOPLANETARY DISK Oeberg, Karin I.; Andrews, Sean M. Article ISI ASTROPHYSICAL JOURNAL LETTERS (2015)
An observational investigation of the identity of B11244 (l-C 3H +/C3H -) McGuire B.A.; Carroll P.B.; Gratier P.; Guzman V.; Pety J.; Roueff E.; Gerin M.; Blake, G. A. Article SCOPUS ASTROPHYSICAL JOURNAL (2014)
Chemical complexity in the Horsehead photodissociation region Guzman V.V.; Pety J.; Gratier P.; Gerin M.; Roueff E.; Le Petit F.; Le Bourlot J. Article SCOPUS FARADAY DISCUSSIONS (2014)
The IRAM-30 m line survey of the Horsehead PDR: III. High abundance of complex (iso-)nitrile molecules in UV-illuminated gas Gratier P.; Pety J.; Guzman V.; Gerin M.; Roueff E.; Faure A. Article SCOPUS ASTRONOMY & ASTROPHYSICS (2013)
The hyperfine structure in the rotational spectrum of CF+ (Research Note) Guzman V.; Roueff E.; Gauss J.; Pety J.; Gratier P.; Gerin M.; Teyssier D. Article SCOPUS ASTRONOMY & ASTROPHYSICS (2012)
The IRAM-30m line survey of the Horsehead PDR: I. CF + as a tracer of C + and as a measure of the fluorine abundance Guzman V.; Pety J.; Gratier P.; Gerin M.; Roueff E.; Teyssier D. Article SCOPUS ASTRONOMY & ASTROPHYSICS (2012)
H2CO in the Horsehead PDR: Photo-desorption of dust grain ice mantles Guzman V.; Pety J.; Gerin M.; Roueff E. Article SCOPUS ASTRONOMY & ASTROPHYSICS (2011)