Search Publications
An Unusual Reservoir of Water Emission in the VV CrA A Protoplanetary Disk
Pascucci, Ilaria; Banzatti, Andrea; Carmona, Andrés +7 more
We present an analysis of an unusual pattern of water vapor emission from the ~2 Myr old low-mass binary system VV CrA, as observed in IR spectra obtained with VLT-CRIRES, VLT-VISIR, and Spitzer-IRS. Each component of the binary shows emission from water vapor in both the L (~3 µm) and N (~12 µm) bands. The N-band and Spitzer spectra a…
Environmental Effects in Herschel Observations of the Ionized Carbon Content of Star-forming Dwarf Galaxies in the Virgo Cluster
Fadda, Dario; Davies, Jonathan; Minchin, Robert +2 more
We use archival Herschel data to examine the singly ionized carbon ([C II]) content of 14 star-forming dwarf galaxies in the Virgo cluster. We use spectral energy distribution fits to far-infrared, mid-infrared, near-infrared, optical, and ultraviolet data to derive the total infrared continuum (TIR) for these galaxies. We compare the [C II]/TIR r…
NICMOS Kernel-phase Interferometry. I. Catalogue of Brown Dwarfs Observed in F110W and F170M
Kraus, Adam L.; Factor, Samuel M.
Filling out the dearth of detections between direct imaging and radial velocity surveys will test theories of planet formation and (sub)stellar binarity across the full range of semimajor axes, connecting formation of close- to wide-separation gas giants and substellar companions. Direct detection of close-in companions is notoriously difficult: c…
Multiwavelength Modeling the SED of Luminous Supersoft X-Ray Sources in Large Magellanic Cloud and Small Magellanic Cloud
Skopal, Augustin
Classical supersoft X-ray sources (SSSs) are understood as close binary systems in which a massive white dwarf accretes from its companion at rates sustaining steady hydrogen burning on its surface generating bolometric luminosities of 1036-2 × 1038 erg s-1. Here, we perform for the first time the global supersoft …
VLA Observations of the AE Aqr-type Cataclysmic Variable LAMOST J024048.51+195226.9
Barrett, Paul E.
AE Aqr was until recently the only known magnetic cataclysmic variable (MCV) containing a rapidly spinning (33.08 s) white dwarf (WD). Its radio emission is believed to be a superposition of synchrotron-emitting plasmoids, because it has a positive spectral index spanning three orders of magnitude (≈2-2000 GHz) and is unpolarized. Both characteris…
A CHEOPS Search for Massive, Long-period Companions to the Warm Jupiter K2-139 b
Smith, Alexis M. S.; Csizmadia, Szilárd
K2-139 b is a warm Jupiter with an orbital period of 28.4 days, but only three transits of this system have previously been observed-in the long-cadence mode of K2-limiting the precision with which the orbital period can be determined and future transits predicted. We report photometric observations of four transits of K2-139 b with ESA's CHaracte…
Optical Linear Polarization Study toward Czernik 3 Open Cluster at Different Spatial Scales
Bisht, D.; Ganesh, Shashikiran; Uppal, Namita
We present the optical linear polarization observation of stars toward the core of the Czernik 3 cluster in the Sloan i band. The data were obtained using the EMPOL instrument on the 1.2 m telescope at Mount Abu Observatory. We study the dust distribution toward this cluster by combining the results from our polarization observations with the data…
The TESS-Keck Survey. XIII. An Eccentric Hot Neptune with a Similar-mass Outer Companion around TOI-1272
Batalha, Natalie M.; Bieryla, Allyson; Latham, David W. +58 more
We report the discovery of an eccentric hot Neptune and a non-transiting outer planet around TOI-1272. We identified the eccentricity of the inner planet, with an orbital period of 3.3 days and R p,b = 4.1 ± 0.2 R ⊕, based on a mismatch between the observed transit duration and the expected duration for a circular orbit. Usin…
The Dust Mass of Supernova Remnants in M31
Ren, Yi; Jiang, Biwei; Zhao, He +2 more
The dust temperature and mass of the supernova remnants (SNRs) in M31 are estimated by fitting the infrared spectral energy distribution calculated from the images in the Spitzer/IRAC4 and MIPS24, Herschel/PACS70, 100, and 160, and Herschel/SPIRE 250 and 350 µm bands. Twenty SNRs with relatively reliable photometry exhibit an average dust te…
A New Detached Binary USNO-B1.0 1421-0485411 with the Secondary Component having Large Albedo
Wang, Xiaobin; Xiang, Yue; Gu, Shenghong +11 more
USNO-B1.0 1421-0485411 is an eclipsing binary system newly discovered in the Yunnan-Hong Kong wide-field photometric survey. Its orbital period is 1.295 days. Based on the V- and R-band photometric data collected at Kunming 1.0 m telescope and spectroscopic data observed at Lijiang 2.4 m telescope, we used the Wilson-Devinney program to determine …