High Level Science Products are observations, catalogs, or models that complement, or are derived from, MAST-supported missions. These include Hubble (HST), James Webb (JWST), TESS, PanSTARRS, Kepler/K2, GALEX, Swift, XMM, and others. HLSPs can include images, spectra, light curves, maps, source catalogs, or simulations. They can include observations from other telescopes, or data that have been processed in a way that differs from what's available in the originating archive. Use the filters below to discover HLSP, or search on HLSP metadata on a MAST Classic form here.

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Listing Results

Results: 147

Ultraviolet Images of Nearby Galaxies

This High Level Science Product consists of a pictorial atlas of UV (2300 Angstrom) images, obtained with the Hubble Space Telescope Faint Object Camera, of the central 22+รน22 arcseconds of 110 galaxies ( Maoz et al. 1996). The observed galaxies are an unbiased selection constituting about one half of a complete sample of all large (D>6 arcmin) and nearby (V< 2000 km/s ) galaxies. The team measured the integrated ~2300 Angstrom flux in each image, and classified the UV morphology. The UV and optical parameters are given in the tables provided.

K2 Extracted Lightcurves

The lightcurves from K2 contain larger systematics than the original Kepler mission, due to the reduction in pointing precision as a result of having to rely on only two reaction wheels. Vanderburg & Johnson have created a technique to correct for the pointing-dependent nature of the pixel-level fluxes. This correction improves the photometric precision by typical factors of 2-5, and results in median photometric performance of K2 targets to within a factor of two of the original, 4-wheeled mission. The team have released their extracted lightcurves (using a variety of photometric apertures), as well as diagnostic plots, for each target. The FITS lightcurves include all data points (with flags to indicate thruster firing), as well as multiple versions (each FITS extension is an extracted lightcurve for a different aperture). There are a total of twenty apertures provided: ten circular and ten based on the pixel response function. The final extension contains the summed image from all the postage stamp frames.

Pre-Main Sequence Stars: IUE Spectral Atlas

This spectral catalog contains coadded IUE low-resolution spectra (from standard NEWSIPS MXLO files) of every T Tauri star (TTS) and candidate Herbig Ae/Be (HAEBE) star with useful IUE data. Processing and analysis procedures are described in Valenti, Johns-Krull, & Linsky (2000) for short wavelength (SW) data (1150-1980 Angstroms) and in Valenti, Fallon, and Johns-Krull (2003) for long wavelength (LW) data (1900-3200 Angstroms). The dereddened main-sequence templates used in the analysis of HAEBE stars are also presented. Coadded SW and LW spectra have been spliced together, when both are available, using the full extent of the lower noise SW segment.

White Dwarf Spectral Atlas: High dispersion IUE

An atlas of IUE Echelle spectra for a total of 55 white dwarfs has been created by Jay Holberg and collaborators. The project seeks to increase the signal-to-noise of white dwarf spectra by combining all observations of a given target into a single, epoch-combined spectrum.

Comet C/2012 S1

A comprehensive set of Hubble Space Telescope (HST) observations of Comet ISON. Hubble Heritage program 13229 imaged the comet on 8 May 2013, using a Wide Field Camera 3 (WFC3) subarray which is half of one of the two CCDs (2K x 2K subarray). Eight identical 171-second exposures were obtained, with one dither step to mitigate bad pixels. The long-pass F350LP filter was used to maximize the signal-to-noise in one orbit. A small offset from the nominal aperture was applied to optimally position the comet and tail within the field of view. Another orbit on 30 April 2013 obtained deep fixed-pointing images of a field with Comet ISON in it, released July 16, 2013. Further details about the Heritage Comet ISON observing program are contained in the Phase II observing program.

A Galaxy Redshift Survey near HST/COS AGN Sight Lines

Keeney et al. (2018) present a galaxy redshift survey around 47 sight lines to UV-bright AGN observed by the Cosmic Origins Spectrograph (COS) in order to establish the connection between galaxies and UV-detected absorption systems in the local Universe. The collection of UV-detected absorption systems was released previously as a MAST HLSP ("IGM"; Danforth et al. 2015). IGM-GAL releases the galaxy spectra obtained as a part of this survey for ~9,000 individual galaxies whose redshift we measured. For most sight lines this survey is >90% complete to ~0.1 L* galaxies within ~1 Mpc of the sight line. Repeat observations imply that this survey has a redshift accuracy of 60 km/s for emission-line galaxies, 100 km/s for absorption-line galaxies, and 80 km/s for composite galaxies that show both emission and absorption.

Calibrated First-Order HUT Spectra of White Dwarfs G191-B2B and HZ 43

During the Astro-1 mission, an aluminum filter was used to block first-order light, and two white dwarfs (G191-B2B and HZ 43) were observed in second order. The flux from these second-order observations were then subtracted from the first-order spectra of these two objects. This was the only time that such second-order corrections were applied to HUT spectra, because no second-order observations were obtained during Astro-2. Because these spectra are in a different format compared to the rest of the HUT data products on MAST, they are provided here as an HLSP.

GALEX Atlas of Nearby Galaxies

The GALEX Atlas of Nearby Galaxies was prepared by A. Gil de Paz, S. Boissier, B.F. Madore, M. Seibert and associated members of the GALEX Team. The team presents images, integrated photometry, surface-brightness, and color profiles for a total of 1034 nearby galaxies observed by the GALEX satellite in its far-ultraviolet (FUV; 1516 Angstroms) and near-ultraviolet (NUV; 2267 Angstroms) bands.

OB Stars (Magellanic): FUSE Spectral Atlas

This catalog serves data for 47 OB stars in the Large and Small Magellanic Clouds (see Walborn et al. 2002). This spectral atlas covers essentially the same spectral type and luminosity ranges in the FUSE_GALOB HLSP. The same observing configuration was used as for the other atlas. However, for this atlas the data have been rebinned to steps of 0.25 Angstroms. The primary difference is that the spectra are less attenuated below 1000 Angstroms by Galactic ISM and H2 extinction. The continuum is fully rectified (flat) and normalized to unity, bringing the conditioning of FUSE data to its fullest potential for immediate analysis purposes.

Catalogs of B-, V-, and i-band dropout sources

Beckwith et al. (2006) have prepared catalogs of dropout sources for the GOODS North, GOODS South, and the Hubble Ultra Deep fields based on the original projects source catalogs.

Carina Nebula

In early February 2010, mosaic images of the Herbig-Haro 901 and 902 (hereafter just HH 901) star formation sites were obtained using both the visible (UVIS) and infrared (IR) channels of the new Wide Field camera 3 (WFC3). The new WFC3 observations include four pointings in a 2x2 mosaic pattern, with small dithers within each pointing to fill the gaps between the two CCD chips, and allow for the rejection of cosmic rays and detector artifacts. A mosaic image was also obtained for a parallel field, using the Advanced Camera for Surveys. In 2005, a 43-orbit investment of Hubble observing time was awarded (HST proposals 10241 and 10475), to study the Carina Nebula in the light of Hydrogen-alpha. Although these observations cover only a small central part of the entire nebula, it resulted in one of the largest contiguous ACS images ever collected. Most of the observations are part of a large mosaic, centered on the star clusters Trumpler 14 and Trumpler 16. Many smaller nearby fields were also imaged, including the spectacular Herbig-Haro object HH666 and the nearby NGC 3324. In 2008, the Hubble Heritage Team also obtained WFPC2 mosaic data for NGC 3324 (HST proposal 11800) with the [O III] and [S II] filters (F502N and F673N).

The Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey

The Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey, CANDELS (Grogin et al. 2011; Koekemoer et al. 2011), PI: S. Faber, Co-PI, H. Ferguson, is designed to document the first third of galactic evolution from z = 8 to 1.5 via deep imaging of more than 250,000 galaxies with WFC3/IR and ACS. It will also discover and characterize Type Ia SNe beyond z > 1.5 and establish their accuracy as standard candles for cosmology.

Auroral Planetary Imaging and Spectroscopy

Among the space-based UV observatories, the ESA/NASA Hubble Space Telescope (HST) intensively observed the outer planets (Jupiter, Saturn, Uranus) in the Far-UV (FUV) from 1993 up to now, providing thousands of images and spectra, often in the frame of combined observations with spacecraft dedicated to planetary exploration (Galileo orbiting Jupiter over 1995-2003, Cassini flyby of Jupiter in 2000, Cassini orbiting Saturn since 2004, New Horizons flyby of Jupiter in 2007, Juno in orbit around Jupiter since 2017) or Earth-based observatories (radio, IR, X-rays). Another Earth-based UV observatory is the JAXA Hisaki satellite which monitors solar system bodies on the long-term with spectro-imaging data in the Extreme UV (EUV) and FUV ranges since 2013. UV observations have also been carried in situ from spectro-imagers onboard the above-mentioned satellites. These observations now form rich databases, of interest for a a wide community, but whose use remains limited by the difficulty to access and use them. The Auroral Planetary Imaging and Spectroscopy (APIS) service aims at providing a free and simple access to processed, high-level, auroral data. Two databases can be queried by the APIS search interface so far: the primary one is built from the STSci archive of public HST planetary observations using the STIS and ACS spectro-imagers. More recently, the team have developed the possibility to query external databases such as Hisaki/EXCEED observations.

Archival Legacy Investigations of Circumstellar Environments

The HST NICMOS instrument has been used from 1997 to 2008 to perform coronagraphic observations of about 400 targets. Most of them were part of surveys looking for substellar companions or resolved circumstellar disks to young nearby stars, making the NICMOS coronagraphic archive a valuable database for exoplanets and disks studies. The ALICE program is an HST Legacy program aiming at revaluing the NICMOS coronagraphic archive with improved detection limits, achieved with modern post-processing methods. Several advanced post-processing algorithms have been developed since 2007, making use of a library of on-sky science images to optimize starlight subtraction from a given dataset. The input data of the ALICE program are the non-polarimetric NICMOS data re-calibrated with observed dark frames and contemporary flat-field frames by the LAPLACE program, which represent 73% of the whole NICMOS non-polarimetric archive. The team delivered products for most of these LAPLACE data (15% were either bad acquisitions with the star not centered on the occulter, or data that couldn't align properly with a library, in grey in this database). To facilitate combination of these products with other surveys, the team has developed a standard FITS file format which provides all the necessary information for high-level analysis of high-contrast imaging datasets, and which aims at being compatible with any type of data (ground-based and space-based instrument, imaging, polarimetric, IFU data).

Hubble Tarantula Treasury Project

HTTP is a panchromatic imaging survey of stellar populations in the Tarantula Nebula (30 Dor) in the Large Magellanic Cloud that reaches into the sub-solar mass regime (<0.5 M_solar). HTTP utilizes the capability of the Hubble Space Telescope to operate the Advanced Camera for Surveys and the Wide Field Camera 3 in parallel to study this remarkable region in the near-ultraviolet, optical, and near-infrared spectral regions, including narrow-band H alpha images. The high sensitivity, spatial resolution and broadband coverage of HTTP allow users to dissect the stellar populations and infer an accurate description of the anatomy of the Tarantula Nebula, and therefore to reconstruct for the first time the temporal and spatial evolution of a prototypical starburst on a sub-parsec scale.