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MAST Staff - 2025 Nov 10New HLSPs
M87-HST-UV contains the deepest ultraviolet image of M87, combining WFC3/UVIS F275W observations of M87 with complementary WFC3 F606W/F660N and ACS F814W mosaics. The release includes calibrated drizzled images, RMS maps, and a multi-band catalog of point sources detected in the F275W band, with photometry measured in fixed 0.05″ apertures across all filters using SExtractor in dual-image mode. The data weak star formation in the past, likely following past outbursts from the central supermassive black hole! The depth and quality of the UV imaging make this dataset broadly valuable for a range of studies, including the properties of globular cluster populations, searches for faint background UV galaxies, and investigations of stellar populations in dense cluster environments.
TESS-YSO provides custom light curves for young stellar objects in TESS Full Frame Images, preserving their variability patterns. The team paid special attention to maximizing photometric precision and minimizing systematic effects, while avoiding blends with stellar neighbors. The resulting light curves are provided as a function of stellar type, circumstellar disk status, and host cluster (if known). In the first release, the HLSP team provides light curves for young intermediate mass stars, focusing on Herbig Ae/Be classes.
Updated HLSPs
OPAL adds HST observations of Saturn taken in August 2025 — now available at MAST.
REFERENCE-ATLASES, catalogs and spectral atlases used with the pysynphot package. For this update, new synphot files for ACS in anticipation of release ETC 34.1, new COS synphot files, background files for use in stsynphot, and a new supernova template.
TESS-SPOC calibrated light curves and target pixel files from
- TESS full frame images for Sector 78 are now available at MAST. This Sector adds 159,998 targets derived from 200 second cadence FFIs.
- TESS full frame images for Sector 79 are now available at MAST. This Sector adds 159,999 targets derived from 200 second cadence FFIs.
- Sector 97 complete. Orbits 3A/3B, orbit 4A, orbit 4B
- Sector 98 Orbits 1A/1B
Left: Composite color image of M87 from HST (blue: F275W, green: F606W, red: F814W).
Right: Same image after subtracting the diffuse galaxy light and smoothing, with Hα emission (green) overlaid. This processing reveals compact sources and filamentary structures otherwise hidden by the galaxy’s brightness. Many yellow point sources are M87 globular clusters, while blue objects include background galaxies and young stellar sources within M87. North is up and East is left.
The TESS Sector 32 light curve of variable Herbig Be star TIC 213103713 (also known as HD 98922). Points flagged with a "0" in the light curve file appear in black, while those flagged with a value greater than zero (data problems or spacecraft anomalies) appear in cyan.