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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.

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Results: 157

Ultraviolet Images of Nearby Galaxies (MAOZ)

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 (K2SFF)

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 (IUEPMS)

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 (IUE-WDATLAS)

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 (ISON)

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.

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

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.

Hubble Deep Field (HDF)

The Hubble Deep Field (HDF) is a Director's Discretionary program on HST in Cycle 5 to image a typical field at high galactic latitude in four wavelength passbands as deeply as reasonably possible. In order to optimize observing in the time available, a field in the northern continuous viewing zone (CVZ) was selected and images were taken for 10 consecutive days, or approximately 150 orbits. Shorter 1-orbit images were also obtained of the fields immediately adjacent to the primary HDF in order to facilitate spectroscopic follow-up by ground-based telescopes. The observations were carried out from 18-30 December 1995, and the data are available to the community for study.

GALEX Atlas of Nearby Galaxies (GALEX_ATLAS)

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 (FUSE_MAGOB)

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 (DROPOUTS)

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.

Deep HST ACS Imaging of 47 Tuc and the SMC (DEEP47TUC)

Kalirai et al. have observed the globular cluster 47 Tucanae for 121 orbits using the Advanced Camera for Surveys. These extremely deep images were taken in two filters: F606W (broad V-band) and F814W (I-band). Using these observations, Kalirai et al. were able to construct one of the deepest and most complete color-magnitude diagrams of a stellar population, probing down to 30th magnitude and extending from the faintest end of the main sequence to the coolest white dwarf members. As an added bonus, members of the Small Magellanic Cloud represent background sources, and these observations are able to resolve SMC targets down to 0.2 solar masses. The team have released their stacked ACS mosaics (FITS files), source catalog (ASCII text table), and artificial source lists (ASCII text table) used for testing photometry, astrometry, and completeness, as High Level Science Products.

Carina Nebula (CARINA)

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 (CANDELS)

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.

Archival Legacy Investigations of Circumstellar Environments (ALICE)

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 (30DOR)

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.