1.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidad Nacional Autónoma de MéxicoMX165 papers
- Fermi National Accelerator LaboratoryUS154 papers
- Centre National de la Recherche ScientifiqueFR114 papers
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMX106 papers
- University of PittsburghUS102 papers
- Centro Brasileiro de Pesquisas FísicasBR97 papers
- University of RochesterUS89 papers
- University of MichiganUS84 papers
- University College LondonGB75 papers
- Instituto Politécnico NacionalMX72 papers
- University of FloridaUS69 papers
- University of MilanIT69 papers
84 papers · 1 filter
Dynamical masses of young stellar objects with the VLBA: DYNAMO-VLBA: Radio binary stars in Orion
Sergio A. Dzib, Jazmín Ordóñez-Toro, Laurent Loinard +9
We present results from a multi-epoch Very Long Baseline Array (VLBA) survey conducted as part of the DYNAMO-VLBA project, aimed at measuring the dynamical masses of young stellar…
Dynamical masses of YSOs with the VLBA: DYNAMO VLBA: Trigonometric parallaxes and proper motions of YSOs in Orion
Sergio A. Dzib, Jazmín Ordóñez-Toro, Laurent Loinard +9
We present results from a multi-epoch Very Long Baseline Array (VLBA) survey of compact radio sources in the Orion complex, conducted within both the DYNAMO-VLBA and the GOBELINS p…
Dynamical mass of the Serpens intermediate-mass young stellar system EC\,95 with DYNAMO--VLBA
Jazmín Ordóñez-Toro, Sergio A. Dzib, Laurent Loinard +8
We present dynamical mass measurements, obtained from multi-epoch Very Long Baseline Interferometry (VLBI) observations, for the young multiple stellar system EC\,95, located in th…
VLBA Detections in the Oph-S1 Binary System near Periastron Confirmation of its Orbital Elements and Mass
Jazmín Ordóñez-Toro, Sergio A. Dzib, Laurent Loinard +7
Oph-S1 is the most luminous and massive stellar member of the nearby Ophiuchus star-forming region. Previous Very Long Baseline Array (VLBA) observations have shown it to be an int…
Using a new spectral disentangling approach to ascertain whether the massive binary HDE 228766 contains a Wolf-Rayet star
Edwin A Quintero, Philippe Eenens
The massive binary HDE 228766 is composed of an O type primary and an evolved secondary. However, previous qualitative analyses of the composite spectrum have led to a wide discuss…
Revisiting the cycle-rotation connection for late-type stars
M. Mittag, J. H. M. M. Schmitt, K. -P. Schröder
We analyse the relation between the activity cycle length and the Rossby number and collected a sample of 44 main sequence stars with well-known activity cycle periods and rotation…
A Keplerian disk with a four-arm spiral birthing an episodically accreting high-mass protostar
R. A. Burns, Y. Uno, N. Sakai +34
High-mass protostars (M 8 M) are thought to gain the majority of their mass via short, intense bursts of growth. This episodic accretion is thought to be faci…
New insight into the massive eccentric binary HD 165052: self-consistent orbital solution, apsidal motion, and fundamental parameters
Sophie Rosu, Edwin A. Quintero, Gregor Rauw +1
HD165052 is a short-period massive eccentric binary system that undergoes apsidal motion. As the rate of apsidal motion is directly related to the internal structure constants of t…
Evolution of the outflow in the water fountain source IRAS 180432116
L. Uscanga, H. Imai, J. F. Gómez +5
We present the spectral and spatial evolution of HO masers associated with the water fountain source IRAS 180432116 found in the observations with the Nobeyama 45 m telescop…
Chromospheric activity and photospheric variation of Ori during the great dimming event in 2020
M. Mittag, K. -P. Schröder, V. Perdelwitz +2
The so-called great dimming event of alpha Ori in late 2019 and early 2020 sparked our interest in the behaviour of chromospheric activity during this period. To study the timeline…
Informed systematic method to identify variable mid and late-T dwarfs
Natalia Oliveros-Gómez, Elena Manjavacas, Afra Ashraf +5
The majority of brown dwarfs show some level of photometric or spectro-photometric variability in different wavelength ranges. This variability allow us to trace the 3D atmospheric…
Searching for nascent planetary nebulae: OHPNe candidates in the SPLASH survey
Roldán A. Cala, José F. Gómez, Luis F. Miranda +7
The evolution of asymptotic giant branch stars from the spherical symmetry into the diverse shapes of planetary nebulae (PNe) is a topic of intensive research. Young PNe provide a…
V1294 Aql = HD 184279: A bad boy among Be stars or an important clue to the Be phenomenon?
P. Harmanec, H. Božić, P. Koubský +21
A reliable determination of the basic physical properties and variability patterns of hot emission-line stars is important for understanding the Be phenomenon and ultimately, the e…
Tracing the Top-of-the-atmosphere and Vertical Cloud Structure of a fast-rotating late T-dwarf
Elena Manjavacas, Theodora Karalidi, Xianyu Tan +4
Only a handful of late-T brown dwarfs have been monitored for spectro-photometric variability, leaving incomplete the study of the atmospheric cloud structures of the coldest brown…
On the physical nature of the Wilson-Bappu effect: revising the gravity and temperature dependence
F. Rosas-Portilla, K. -P. Schröder, D. Jack
We present a sample of 32 stars of spectral types G and K, and luminosity classes I to V, with moderate activity levels, covering four orders of magnitude of surface gravity and a…
Yet another star in the Albireo system -- The discovery of Albireo Ad
D. Jack, K. -P. Schröder, M. Mittag +1
Context. Albireo is a well-known bright visual double star. It is still unclear if the components A and B form a gravitationally bound system. The component Albireo A is itself a b…
Proper Motions of Water Masers in the Star-forming Region IRAS 23139+5939
Miguel A. Trinidad, Hiroshi Imai, Eduardo de la Fuente +3
We observed HO (6 5) maser emission associated with the high-mass star-forming region IRAS 23139+5959 using the KaVA a combination of VLBI arrays be…
Bright Spectroscopic Binaries: II. A study of five systems with orbital periods of P < 500 days
Dennis Jack, Missael Alejandro Hernández Huerta, Faiber Danilo Rosas-Portilla +1
We present a detailed analysis of five bright spectroscopic binary systems (HD 18665, HD 27131, HD 171852, HD 215550, HD 217427) that have orbital periods of P < 500 days. We deter…
A new photometric study of M14 (NGC 6402): An interpretation of the Horizontal Branch and beyond
M. A. Yepez, A. Arellano Ferro, D. Deras +3
We present a CCD photometric study of the globular cluster M14. Particular attention is given to the variable stars. This allowed new classifications and cluster membership co…
Interpretation of optical and IR light curves for transitional disk candidates in NGC 2264 using the extincted stellar radiation and the emission of optically thin dust inside the hole
Erick Nagel, Fernando Gutiérrez-Canales, Sebastián Morales-Gutiérrez +1
In the stellar forming region NGC 2264 there are objects catalogued as hosting a transitional disk according to spectrum modeling. Four members of this set have optical and infrare…
Chromospheric Activity in 55 Cancri: II. Theoretical Wave Studies versus Observations
M. Cuntz, K. -P. Schröder, D. E. Fawzy +1
In this study, we consider chromospheric heating models for 55 Cancri in conjunction with observations. The theoretical models, previously discussed in Paper I, are self-consistent…
A time-series VI study of the variable stars of the globular cluster NGC 6397
J. A. Ahumada, A. Arellano Ferro, I. Bustos Fierro +4
We present a new time-series VI CCD photometry of the globular cluster NGC 6397, from which we obtained and analysed the light curves of 35 variables carefully identified in the cl…
Connecting the formation of stars and planets. II: coupling the angular momentum of stars with the angular momentum of planets
L. M. Flor-Torres, R. Coziol, K. -P. Schröder +2
A sample of 46 stars, host of exoplanets, is used to search for a connection between their formation process and the formation of the planets rotating around them. Separating our s…
Connecting the formation of stars and planets. I -- Spectroscopic characterization of host stars with TIGRE
L. M. Flor-Torres, R. Coziol, K. -P. Schröder +3
In search for a connection between the formation of stars and the formation of planets, a new semi-automatic spectral analysis method using \textsf{iSpec} was developed for the TIG…