Publications (25)
IRAS 16475-4609: A Young Compact HII Region Sculpting Its Molecular Environment
Felipe Navarete, Sean D. Points, Augusto Damineli
We present a near-infrared spectroscopic and imaging analysis of the star-forming region IRAS 16475-4609, based on TripleSpec/SOAR spectroscopy and NEWFIRM/CTIO imaging, complement…
On the Origin of Fast Rotating Stars. I. Photometric calibration and results of AO-assisted BVRI+Halpha imaging of NGC330 with SAMI/SOAR
Felipe Navarete, Pedro Ticiani dos Santos, Alex Cavaliéri Carciofi +1
H emission is a clear indicator of circumstellar activity in Be stars, historically employed to assess the classical Be star (CBe) population in young open clusters (YOCs). The…
Distance and age of the massive stellar cluster Westerlund 1. I. Parallax method using Gaia-EDR3
Felipe Navarete, Augusto Damineli, Aura E. Ramirez +2
Westerlund 1 (Wd 1) is one of the most massive young star clusters in the Milky Way. Although relevant for star formation and evolution, its fundamental parameters are not yet very…
Long-term evolution in ionization of ejecta illuminated by Eta Carinae
Augusto Damineli, Noel D. Richardson, Felipe Navarete +6
Changes in the flux and spectrum of Eta Carinae since 1900 have been attributed to the evolution of the central binary by some. Others suggest evolution in the occulting ejecta. Th…
A lanthanide-rich kilonova in the aftermath of a long gamma-ray burst
Yu-Han Yang, Eleonora Troja, Brendan O'Connor +24
Kilonovae are a rare class of astrophysical transients powered by the radioactive decay of nuclei heavier than iron, synthesized in the merger of two compact objects. Over the firs…
Sulphur-Bearing and Complex Organic Molecules in an Infrared Cold Core
Pedro P. B. Beaklini, Edgar Mendoza, Carla M. Canelo +9
Since the start of ALMA observatory operation, new and important chemistry of infrared cold core was revealed. Molecular transitions at millimeter range are being used to identify…
NICER X-ray Observations of Eta Carinae During its Most Recent Periastron Passage
David Espinoza-Galeas, Michael Francis Corcoran, Kenji Hamaguchi +12
We report high-precision X-ray monitoring observations in the 0.4-10 keV band of the luminous, long-period colliding-wind binary Eta Carinae up to and through its most recent X-ray…
A Survey of Extended H Emission from Massive YSOs
Felipe Navarete, Augusto Damineli, Cassio L. Barbosa +1
We present the results from a survey, designed to investigate the accretion process of massive young stellar objects (MYSOs) through near infrared narrow band imaging using the H$_…
X-Raying a Be star disk: fundamental parameters of the eclipsing binary Be star V658 Car
Tajan H. de Amorim, Alex C. Carciofi, Jonathan Labadie-Bartz +8
With its two stellar eclipses and two disk attenuations per binary orbit, V658 Carinae stands out as the first clear eclipsing Be + sdOB system. This rare alignment offers a unique…
ATLASGAL-selected high-mass clumps in the inner Galaxy. VII. Characterisation of mid-J CO emission
Felipe Navarete, Silvia Leurini, Andrea Giannetti +7
High-mass stars are formed within massive molecular clumps, where a large number of stars form close together. The evolution of the clumps with different masses and luminosities is…
Gaia-DR2 distance to the W3 Complex in the Perseus Arm
Felipe Navarete, Phillip A. B. Galli, Augusto Damineli
The Perseus Arm is the closest Galactic spiral arm from the Sun, offering an excellent opportunity to study in detail its stellar population. However, its distance has been controv…
Extinction law in the range 0.4-4.8 m and the 8620 DIB towards the stellar cluster Westerlund 1
Augusto Damineli, Leonardo A. Almeida, Robert D. Blum +4
The young stellar cluster Westerlund 1 (Wd 1: =339.6, b=0.4) is one of the most massive in the local Universe, but accurate parameters are pending on better d…
VVV-WIT-12 and its fashionable nebula: a four year long period Young Stellar Object with a light echo?
Roberto K. Saito, Bringfried Stecklum, Dante Minniti +7
We report the serendipitous discovery of VVV-WIT-12, an unusual variable source that seems to induce variability in its surrounding nebula. The source belongs to the rare objects t…
Distance and age of the massive stellar cluster Westerlund 1. II. The eclipsing binary W36
Danilo F. Rocha, Leonardo A. Almeida, Augusto Damineli +3
Westerlund 1 (Wd 1) is one of the most relevant star clusters in the Milky Way to study massive star formation, although it is still poorly known. Here, we used photometric and spe…
Eta Carinae: an evolving view of the central binary, its interacting winds and its foreground ejecta
Theodore R. Gull, D. John Hillier, Henrik Hartman +13
FUV spectra of Eta Car, recorded across two decades with HST/STIS, document multiple changes in resonant lines caused by dissipating extinction in our line of sight. The FUV flux h…
The Triple System V1371 Tau: An Eclipsing Binary with an Outer Be Star
Danilo F. Rocha, Marcelo Emilio, Jonathan Labadie-Bartz +10
Although triple systems are common, their orbital dynamics and stellar evolution remain poorly understood. We investigated the V1371 Tau system using TESS photometry, multi-epoch s…
Near-Infrared Spectroscopy of Ultracompact \ion{H}{2} regions in W51A with NIFS/ALTAIR
Cassio L. Barbosa, Felipe Navarete, Robert D. Blum +1
W51A is the most active star formation region of the Giant \ion{H}{2} region W51. It harbors the two massive proto-clusters W51e and W51\,IRS2, which are very rare in the Galaxy. W…
Changes in the Na D Absorption Components of Carinae Provide Clues on the Location of the Dissipating Central Occulter
Connor S. Pickett, Noel D. Richardson, Theodore Gull +9
The Na D absorption doublet in the spectrum of Carinae is complex, with multiple absorption features associated with the Great Eruption (1840s), the Lesser Eruption (1890s), a…
NANCY: Next-generation All-sky Near-infrared Community surveY
Jiwon Jesse Han, Arjun Dey, Adrian M. Price-Whelan +206
The Nancy Grace Roman Space Telescope is capable of delivering an unprecedented all-sky, high-spatial resolution, multi-epoch infrared map to the astronomical community. This oppor…
ATLASGAL-selected high-mass clumps in the inner Galaxy: XI. Morphology and kinematics of warm inner envelopes
Thanh Dat Hoang, Min-Young Lee, Friedrich Wyrowski +3
(Abridged) Massive stellar embryos are embedded in warm envelopes that provide mass reservoirs for the accretion process onto final stars. Feedback from star formation activities i…
Visual Orbits of Wolf-Rayet Stars II: The Orbit of the Nitrogen-Rich WR Binary WR 138 measured with the CHARA Array
Amanda Holdsworth, Noel Richardson, Gail H. Schaefer +19
Classical Wolf-Rayet stars are descendants of massive OB-type stars that have lost their hydrogen-rich envelopes, and are in the final stages of stellar evolution, possibly explodi…
Early-Time Observations of SN 2023wrk: A Luminous Type Ia Supernova with Significant Unburned Carbon in the Outer Ejecta
Jialian Liu, Xiaofeng Wang, Cristina Andrade +44
We present extensive photometric and spectroscopic observations of the nearby Type Ia supernova (SN) 2023wrk at a distance of about 40 Mpc. The earliest detection of this SN can be…
The Fourth S-PLUS Data Release: 12-filter photometry covering square degrees in the southern hemisphere
Fabio R. Herpich, Felipe Almeida-Fernandes, Gustavo B. Oliveira Schwarz +68
The Southern Photometric Local Universe Survey (S-PLUS) is a project to map sq deg of the sky using twelve bands (seven narrow and five broadbands). Observations are per…
Principal component analysis tomography in near-infrared integral field spectroscopy of young stellar objects. I. Revisiting the high-mass protostar W33A
Felipe Navarete, Augusto Damineli, João E. Steiner +1
W33A is a well-known example of a high-mass young stellar object showing evidence of a circumstellar disc. We revisited the -band NIFS/Gemini North observations of the W33A prot…
Distinguishing Circumstellar from Stellar Photometric Variability in Eta Carinae
Augusto Damineli, Eduardo Fernández-Lajús, Leonardo A. Almeida +14
The interacting binary Eta Carinae remains one of the most enigmatic massive stars in our Galaxy despite over four centuries of observations. In this work, its light curve from the…