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- ID:
- ivo://org.gavo.dc/theossa/q/tmaw
- Title:
- TMAW -- Tübingen Model Atmosphere Package WWW Interface
- Short Name:
- TMAW
- Date:
- 27 Dec 2024 08:31:03
- Publisher:
- The GAVO DC team
- Description:
- The Tübingen NLTE Model-Atmosphere Package (`TMAP <http://astro.uni-tuebingen.de/%7ETMAP/TMAP.html>`_) is a tool to calculate stellar atmospheres in spherical or plane-parallel geometry in hydrostatic and radiative equilibrium allowing departures from local thermodynamic equilibrium (LTE) for the population of atomic levels./TMAP/ is based on the so-called Accelerated Lambda Iteration (ALI) method and is able to account for line blanketing by metals. All elements from hydrogen to nickel may be included in the calculation with model atoms which are tailored for the aims of the user.
22293. TMC-1N mapping in JHK bands
- ID:
- ivo://CDS.VizieR/J/A+A/558/A44
- Title:
- TMC-1N mapping in JHK bands
- Short Name:
- J/A+A/558/A44
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Mapping of the near-infrared (NIR) scattered light is a recent method for the study of interstellar clouds, complementing other, more commonly used methods, like dust emission and extinction. Our goal is to study the usability of this method on larger scale, and compare the properties of a filamentary structure using infrared scattering and other methods. We also study the radiation field and differences in grain emissivity between diffuse and dense areas. We have used scattered NIR J, H, and K band surface brightness observations with WFCAM instrument to map a filament TMC-1N in Taurus Molecular Cloud, covering an area of 1{deg}x1{deg} corresponding to ~(2.44pc). We have converted the data into an optical depth map and compared the results with NIR extinction and Herschel observations of sub-mm dust emission. We have also modelled the filament with 3D radiative transfer calculations of scattered light.
22294. TMGS star positions
- ID:
- ivo://CDS.VizieR/J/ApJ/491/L31
- Title:
- TMGS star positions
- Short Name:
- J/ApJ/491/L31
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present an analysis of the optical spectroscopy of 58 stars in the Galactic plane at l=27deg, where a prominent excess in the flux distribution and star counts have been observed in several spectral regions, in particular in the Two-Micron Galactic Survey (TMGS) catalog. The sources were selected from the TMGS to have a K magnitude brighter than +5mag and to be within 2deg of the Galactic plane. More than 60% of the spectra correspond to stars of luminosity class I, and a significant proportion of the remainder are very late and fast-evolving giants. This very high concentration of young sources points to the existence of a major star formation region in the Galactic plane, located just inside the assumed origin of the Scutum spiral arm. Such regions can form because of the concentrations of shocked gas where a galactic bar meets a spiral arm, as is observed at the ends of the bars of face-on external galaxies. Thus, the presence of a massive star formation region is very strong supporting evidence for the presence of a bar in our Galaxy.
- ID:
- ivo://ia2.inaf.it/tng/lrs/siap
- Title:
- TNG - LRS @ IA2 image archive
- Date:
- 13 Mar 2019 11:38:26
- Publisher:
- IA2
- Description:
- DOLORES (Device Optimized for the LOw RESolution) is a focal reducer instrument installed at the Nasmyth B focus of the TNG. The detector is a 2048 x 2048 E2V 4240 Thinned back-illuminated, deep-depleted, Astro-BB coated CCD with a pixel size of 13.5 µ. The scale is 0.252 arcsec/px which yields a field of view of about 8.6 x 8.6 arcmin. The instrument allows imaging through broad and narrow band filters as well as spectroscopic observations with resolving powers between RS=~500 and RS=~6000. A multi-slit mode, based on custom masks manufactured by a dedicate cutting machine, is also available. Please note that MOS programs are bound to strict constraints on the number of masks and on the time necessary to design and manufacture them. In particular, each program can request up to a maximum of 5 masks per night and 10 masks per observing run.
- ID:
- ivo://ia2.inaf.it/tng/nics/siap
- Title:
- TNG - NICS @ IA2 image archive
- Date:
- 13 Mar 2019 11:38:50
- Publisher:
- IA2
- Description:
- NICS (Near Infrared Camera Spectrometer) is the TNG infrared (0.9-2.5 µm) multimode instrument which is based on a HgCdTe Hawaii 1024x1024 array. Its observing capabilities include imaging (4.2' x 4.2' f.o.v.), high-throughput low resolution spectroscopy (RS=50-500), medium resolution spectoscopy (max-R=2500), imaging polarimetry, spectropolarimetry and, when coupled to the adaptive optics module, nearly diffraction limited imaging.
22297. TNG - OIG @ IA2
- ID:
- ivo://ia2.inaf.it/tng/oig/siap
- Title:
- TNG - OIG @ IA2
- Date:
- 13 Mar 2019 11:39:14
- Publisher:
- IA2
- Description:
- OIG is a CCD camera for direct imaging at optical wavelengths (between 0.32 nd 1.1 microns) for the TNG. It is mounted on the Nasmyth A Adapter interface. OIG is designed to host a variety of CCD chips or mosaics for a field of view up to 10 arcmin. At the moment it is equipped with a mosaic of two thinned and back-illuminated EEV 42-80 CCDs with 2048 x 4096 pixels each (pixel size of 13.5 microns). The resulting pixel scale is 0.072 arcsec/pix for a total field of view of about 4.9 x 4.9 arcmin.
- ID:
- ivo://CDS.VizieR/J/AJ/157/120
- Title:
- TNOs and Centaurs observed within the DES
- Short Name:
- J/AJ/157/120
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Trans-Neptunian objects (TNOs) are a source of invaluable information to access the history and evolution of the outer solar system. However, observing these faint objects is a difficult task. As a consequence, important properties such as size and albedo are known for only a small fraction of them. Now, with the results from deep sky surveys and the Gaia space mission, a new exciting era is within reach as accurate predictions of stellar occultations by numerous distant small solar system bodies become available. From them, diameters with kilometer accuracies can be determined. Albedos, in turn, can be obtained from diameters and absolute magnitudes. We use observations from the Dark Energy Survey (DES) from 2012 November until 2016 February, amounting to 4292847 charge-coupled device (CCD) frames. We searched them for all known small solar system bodies and recovered a total of 202 TNOs and Centaurs, 63 of which have been discovered by the DES collaboration as of the date of submission. Their positions were determined using the Gaia Data Release 2 (Cat. I/345) as reference and their orbits were refined. Stellar occultations were then predicted using these refined orbits plus stellar positions from Gaia. These predictions are maintained, and updated, in a dedicated web service. The techniques developed here are also part of an ambitious preparation to use the data from the Large Synoptic Survey Telescope (LSST), that expects to obtain accurate positions and multifilter photometry for tens of thousands of TNOs.
- ID:
- ivo://padc.obspm.planeto/tnosarecool/q/epn_core
- Title:
- TNOs fluxes measured from space
- Short Name:
- TNOsarecool
- Date:
- 16 Jul 2024 13:55:03
- Publisher:
- Paris Astronomical Data Centre - LESIA
- Description:
- This service lists TNO thermal properties as derived mostly from Spitzer and Herschel observations.
- ID:
- ivo://CDS.VizieR/J/A+A/507/1649
- Title:
- Tohoku-Hiroshima-Nagoya planetary spectra library
- Short Name:
- J/A+A/507/1649
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A comprehensive framework for comparing spectral data from different planets has yet to be established. This framework is needed for the study of extrasolar planets and objects within the solar system. We completed observations to compile a library of planet spectra for all planets, some moons, and some dwarf planets in the solar system to study their general spectroscopic and photometric natures. During May and November of 2008, we acquired spectra for the planets using TRISPEC, which is capable of simultaneous three-band spectroscopy across a wide wavelength range of 0.45-2.5um with low resolving power ({lambda}{Delta}{lambda}~140-360).
