activity
20242026
most citedGravity or turbulence? VII. The Schmidt-Kennicutt law, the star formation efficiency, and the mass density of clusters from gravitational collapse rather than turbulent support

4 citations · 7 across the 18 of their papers we have counts for

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astro-ph.SR2026

The efficiency per free-fall time as a ratio of the Star Formation Rate to the gas-infall rate in collapsing cores: dependence on the core definition, accretion, and radial structure

Fabián Quesada-Zúñiga, Manuel Zamora-Avilés, Enrique Vázquez-Semadeni +3

A parameter used to characterise star formation activity in MCs is the efficiency per free-fall time, , although commonly referred to as an efficiency, it is formally t…

astro-ph.SR2026

Estimating the Luminosities of Protostars with Limited Infrared Photometry

Michael M. Dunham, Aina Palau, Nuria Huélamo +3

The luminosities of protostars provide one of the only indirect methods of measuring their masses and mass accretion rates in their earliest stages of evolution. Accurate measureme…

astro-ph.SR2026

Unveiling the First O-Type Bloated Star Candidate through ALMA and EVLA Observations

Rakesh Pandey, Aina Palau, Alvaro Sánchez-Monge +5

We investigate the circumstellar environment of the O-type bloated star candidate IRAS 19520+2759 (I19520) using high-resolution observations from the Atacama Large Millimeter/subm…

astro-ph.SR2025★ 1 cited

A VLA search for compact radio sources in the explosive molecular outflows DR 21 and G5.89

Vanessa Yanza, Sergio A. Dzib, Aina Palau +3

We present high-angular-resolution () VLA Ku-band (12--18 GHz) observations of two explosive molecular outflows (EMOs), DR 21 and G5.89, in a search for runaway s…

astro-ph.SR2025

Hints of Disk Substructure in the First Brown Dwarf with a Dynamical Mass Constraint

Alejandro Santamaría Miranda, Pietro Curone, Laura Pérez +14

We present high-resolution ALMA observations at 0.89 mm of the Class II brown dwarf 2MASS J04442713+2512164 (2M0444), achieving a spatial resolution of 0046 (…

astro-ph.SR2025

Testing the bloated star hypothesis in the massive young stellar object IRAS 19520+2759 through optical and infrared variability

Rakesh Pandey, Aina Palau, Javier Serna +8

Using optical time series with Telescopi Joan Oró (TJO), Gaia, TESS, and NEOWISE archival data, we performed a variability study on the candidate bloated massive young stellar obje…

astro-ph.SR2025

The arc-shaped radio source at the center of NGC 6334A: Is it a colliding wind region of two young massive stars or the bow shock of a runaway star?

Vanessa Yanza, Sergio A. Dzib, Aina Palau +4

New multi-wavelength Karl G. Jansky VLA observations of CKR02A, the compact radio source in the center of the compact HII region NGC 6334A, are presented. The observations were car…