184 citations · 1.8k across the 60 of their papers we have counts for
37 papers · 1 filter
HD 152384: A 5 Myr old debris disk system showing a gaseous ring of refractory elements at the dust sublimation radius
Mario van den Ancker, Daniela Iglesias, Olja Panić +2
Context: Circumstellar gas around young stars provides key insights into planet formation and disk evolution. HD 152384, a young (5 Myr) A0 V star in Sco-Cen, shows hybrid-disk tra…
Coordinated Space- and Ground-based Monitoring of Accretion Bursts in a Protoplanetary Disk: The Orbital and Accretion Properties of DQ Tau
Hala Alqubelat, Carlo F. Manara, Justyn Campbell-White +9
Multiplicity in pre-main-sequence (PMS) systems shapes circumstellar and circumbinary disks, often producing features such as inner cavities, spiral arms, and gas streamers that fa…
A tell-tale tracer for externally irradiated protoplanetary disks: comparing the [CI] 8727 A line and ALMA observations in proplyds
Mari-Liis Aru, Karina Mauco, Carlo F. Manara +15
The evolution of protoplanetary disks in regions with massive OB stars is influenced by externally driven winds that deplete the outer parts of disks. These winds have previously b…
Empirical Determination of the Lithium 6707.856 Å Wavelength in Young Stars
Justyn Campbell-White, Carlo F. Manara, Aurora Sicilia-Aguilar +20
Absorption features in stellar atmospheres are often used to calibrate photocentric velocities for kinematic analysis of further spectral lines. The Li feature at 6708 Å is…
X-Shooter Survey of Young Intermediate Mass Stars -- I. Stellar Characterization and Disc Evolution
Daniela P. Iglesias, Olja Panić, Mario van den Ancker +6
Intermediate mass stars (IMSs) represent the link between low-mass and high-mass stars and cover a key mass range for giant planet formation. In this paper, we present a spectrosco…
PENELLOPE III. The peculiar accretion variability of XX Cha and its impact on the observed spread of accretion rates
R. A. B. Claes, C. F. Manara, R. Garcia-Lopez +17
The processes regulating protoplanetary disk evolution are constrained by studying how mass accretion rates scale with stellar and disk properties. The spread in these relations ca…
First detection of a disk free of volatile elements around a young A-type star: A sign of collisions between rocky planets?
M. E. van den Ancker, N. P. Gentile Fusillo, T. J. Haworth +7
Aims. We present the first detailed analysis of the astrophysical parameters of the poorly studied Sco-Cen member HD 152384 and its circumstellar environment. Methods. We analyze n…
Planet formation in intermediate-separation binary systems
O. Panić, T. J. Haworth, M. G. Petr-Gotzens +13
We report the first characterisation of the individual discs in the intermediate separation binary systems KK Oph and HD 144668 at millimetre wavelengths. In both systems the circu…
Statistics of wide pre-main sequence binaries in the Orion OB1 association
Andrei Tokovinin, Monika Petr-Gotzens, Cesar Briceno
Statistics of low-mass pre-main sequence binaries in the Orion OB1 association with separations ranging from 0.6" to 20" (220 to 7400 au at 370 pc) are studied using images from th…
The VMC Survey -- XXXVII. Pulsation periods of dust enshrouded AGB stars in the Magellanic Clouds
M. A. T. Groenewegen, A. Nanni, M. -R. L. Cioni +9
(abridged)Variability is a key property of stars on the asymptotic giant branch (AGB). Their pulsation period is related to the luminosity and mass-loss rate of the star. The long-…
The VMC survey -- XXXVI. Young stellar variability in the Large Magellanic Cloud
Viktor Zivkov, Joana M. Oliveira, Monika G. Petr-Gotzens +11
Studies of young stellar objects (YSOs) in the Galaxy have found that a significant fraction exhibit photometric variability. However, no systematic investigation has been conducte…
When the tale comes true: multiple populations and wide binaries in the Orion Nebula Cluster
Tereza Jerabkova, Giacomo Beccari, Henri M. J. Boffin +5
The high-quality OmegaCAM photometry of the 3x3 deg around the Orion Nebula Cluster (ONC) in r, and i filters by Beccari et al.(2017) revealed three well-separated pre-main sequenc…
System IMF of the 25 Ori Group from Planetary-Mass Objects to Intermediate/High-Mass Stars
Genaro Suárez, Juan José Downes, Carlos Román-Zúñiga +4
The stellar initial mass function (IMF) is an essential input for many astrophysical studies but only in a few cases it has been determined over the whole cluster mass range, limit…
Weak Magnetic Fields in Two Herbig Ae Systems: The SB2 AK Sco and the Presumed Binary HD 95881
S. P. Järvinen, T. A. Carroll, S. Hubrig +9
We report the detection of weak mean longitudinal magnetic fields in the Herbig Ae double-lined spectroscopic binary AK Sco and in the presumed spectroscopic Herbig Ae binary HD958…
A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster
G. Beccari, M. G. Petr-Gotzens, H. M. J. Boffin +15
As part of the Accretion Discs in H with OmegaCAM (ADHOC) survey, we imaged in r, i and H-alpha a region of 12x8 square degrees around the Orion Nebula Cluster. Thanks to the hi…
New Low-Mass Stars in the 25 Orionis Stellar Group and Orion OB1a Sub-association from SDSS-III/BOSS Spectroscopy
Genaro Suárez, Juan José Downes, Carlos Román-Zúñiga +6
The Orion OB1a sub-association is a rich low mass star (LMS) region. Previous spectroscopic studies have confirmed 160 LMSs in the 25 Orionis stellar group (25 Ori), which is the m…
Spectroscopic signatures of magnetospheric accretion in Herbig Ae/Be stars. I. The case of HD101412
M. Schöller, M. A. Pogodin, J. A. Cahuasqui +10
Models of magnetically-driven accretion and outflows reproduce many observational properties of T Tauri stars. This concept is not well established for the more massive Herbig Ae/B…
The frequency of accretion disks around single stars: Chamaeleon I
Sebastian Daemgen, R. Elliot Meyer, Ray Jayawardhana +1
It is well known that stellar companions can influence the evolution of a protoplanetary disk. Nevertheless, previous disk surveys did not - and could not - consistently exclude bi…
The VISTA Carina Nebula Survey II. Spatial distribution of the infrared-excess-selected young stellar population
Peter Zeidler, Thomas Preibisch, Thorsten Ratzka +2
We performed a deep wide-field (6.76 deg^2) near-infrared survey with the VISTA telescope that covers the entire extent of the Carina nebula complex (CNC). The point-source catalog…
Protoplanetary Disk Evolution: Singles vs. Binaries
Sebastian Daemgen, Ray Jayawardhana, Monika G. Petr-Gotzens +1
Based on a large number of observations carried out in the last decade it appears that the fraction of stars with protoplanetary disks declines steadily between ~1 Myr and ~10 Myr.…
The VISTA Orion mini-survey: star formation in the Lynds 1630 North cloud
L. Spezzi, M. G. Petr-Gotzens, J. M. Alcalá +4
The Orion cloud complex presents a variety of star formation mechanisms and properties and it is still one of the most intriguing targets for star formation studies. We present VIS…
The number fraction of discs around brown dwarfs in Orion OB1a and the 25 Orionis group
Juan José Downes, Carlos Román-Zúñiga, Javier Ballesteros-Paredes +7
We present a study of 15 new brown dwarfs belonging to the Myr old 25 Orionis group and Orion OB1a sub-association with spectral types between M6 and M9 and estimated masse…
Probing the Structure of the Accretion Region in a Sample of Magnetic Herbig Ae/Be Stars
M. A. Pogodin, J. A. Cahuasqui, N. A. Drake +10
We present the results of a study of the temporal behaviour of several diagnostic lines formed in the region of the accretion-disk/star interaction in the three magnetic Herbig Ae…
The low mass star and sub-stellar populations of the 25 Orionis group
Juan José Downes, César Briceño, Cecilia Mateu +6
We present the results of a survey of the low mass star and brown dwarf population of the 25 Orionis group. Using optical photometry from the CIDA Deep Survey of Orion, near IR pho…