Search Publications
Understanding the Physical Nature of Coronal "EIT Waves"
Long, D. M.; Veronig, A. M.; Vršnak, B. +9 more
For almost 20 years the physical nature of globally propagating waves in the solar corona (commonly called "EIT waves") has been controversial and subject to debate. Additional theories have been proposed over the years to explain observations that did not agree with the originally proposed fast-mode wave interpretation. However, the incompatibili…
LACEwING: A New Moving Group Analysis Code
Blunt, Sarah C.; Faherty, Jacqueline K.; Cruz, Kelle L. +3 more
We present a new nearby young moving group (NYMG) kinematic membership analysis code, LocAting Constituent mEmbers In Nearby Groups (LACEwING), a new Catalog of Suspected Nearby Young Stars, a new list of bona fide members of moving groups, and a kinematic traceback code. LACEwING is a convergence-style algorithm with carefully vetted membership s…
The Herschel Orion Protostar Survey: Luminosity and Envelope Evolution
Manoj, P.; Myers, Philip C.; Fischer, William J. +12 more
The Herschel Orion Protostar Survey obtained well-sampled 1.2-870 µm spectral energy distributions (SEDs) of over 300 protostars in the Orion molecular clouds, home to most of the young stellar objects (YSOs) in the nearest 500 pc. We plot the bolometric luminosities and temperatures for 330 Orion YSOs, 315 of which have bolometric temperatu…
Measurements of Physical Parameters of White Dwarfs: A Test of the Mass-Radius Relation
Fontaine, G.; Bergeron, P.; Bédard, A.
We present a detailed spectroscopic and photometric analysis of 219 DA and DB white dwarfs for which trigonometric parallax measurements are available. Our aim is to compare the physical parameters derived from the spectroscopic and photometric techniques, and then to test the theoretical mass-radius relation for white dwarfs using these results. …
Magnifying the Early Episodes of Star Formation: Super Star Clusters at Cosmological Distances
Castellano, M.; Pentericci, L.; Vignali, C. +27 more
We study the spectrophotometric properties of a highly magnified (µ ≃ 40{--}70) pair of stellar systems identified at z = 3.2222 behind the Hubble Frontier Field galaxy cluster MACS J0416. Five multiple images (out of six) have been spectroscopically confirmed by means of VLT/MUSE and VLT/X-Shooter observations. Each image includes two faint…
The Rosetta mission orbiter science overview: the comet phase
Buratti, B. J.; Altobelli, N.; Taylor, M. G. G. T. +1 more
The international Rosetta mission was launched in 2004 and consists of the orbiter spacecraft Rosetta and the lander Philae. The aim of the mission is to map the comet 67P/Churyumov-Gerasimenko by remote sensing, and to examine its environment in situ and its evolution in the inner Solar System. Rosetta was the first spacecraft to rendezvous with …
Chromosphere to 1 AU Simulation of the 2011 March 7th Event: A Comprehensive Study of Coronal Mass Ejection Propagation
de Koning, C. A.; Gombosi, T. I.; Tóth, G. +5 more
We perform and analyze the results of a global magnetohydrodynamic simulation of the fast coronal mass ejection (CME) that occurred on 2011 March 7. The simulation is made using the newly developed Alfvén Wave Solar Model (AWSoM), which describes the background solar wind starting from the upper chromosphere and extends to 24 R⊙. Coupli…
The Greater Taurus-Auriga Ecosystem. I. There is a Distributed Older Population
Herczeg, Gregory J.; Rizzuto, Aaron C.; Kraus, Adam L. +5 more
The census of Taurus-Auriga has been assembled over seven decades and inherited the biases and incompleteness of the input studies. The unusual shape of its inferred initial mass function (IMF) and the existence of isolated disk-bearing stars suggest that additional (likely disk-free) members remain to be discovered. We therefore have begun a glob…
Space Telescope and Optical Reverberation Mapping Project.VI. Reverberating Disk Models for NGC 5548
Im, M.; Geier, S.; Zheng, W. +90 more
We conduct a multiwavelength continuum variability study of the Seyfert 1 galaxy NGC 5548 to investigate the temperature structure of its accretion disk. The 19 overlapping continuum light curves (1158 \mathringA to 9157 \mathringA ) combine simultaneous Hubble Space Telescope, Swift, and ground-based observations over a 180 day period from 2014 J…
In-orbit Performance of UVIT and First Results
Stalin, C. S.; Rao, N. Kameswara; Sutaria, F. +23 more
The performance of the ultraviolet telescope (UVIT) on-board AstroSat is reported. The performance in orbit is also compared with estimates made from the calibrations done on the ground. The sensitivity is found to be within