Semper simplicissimam, fundamentalem solutionem quaere. Si simpliciter explicare non potes, non intellexisti. (R. Feynman)
Astrophotography by GrandpaJunkrat - ----- TIC 322312572
Cosmology from my armchair..............................
I do it metric .............................................................. Location:
bastion@protonmail.com The Netherlands
Bortle 7 - 9
Overview and Scientific Classification
TIC 322312572, identified in SIMBAD as 2MASS J21424707+6610512, is classified as a Young Stellar Object located in an active star‑forming environment. Its infrared brightness and its appearance in multiple IR catalogs indicate the presence of circumstellar material, while its Gaia astrometry confirms it as a compact stellar source. The star is relatively bright in the near‑infrared compared to the optical, suggesting moderate extinction and the presence of warm dust typical of early stellar evolutionary stages.
Scientific classification
The object is listed as a Young Stellar Object (Y*O), a near‑infrared source, and an infrared source in the SVS76 catalog. These classifications point to a pre‑main‑sequence star still interacting with its circumstellar environment. Interestingly, the star also carries a B8V spectral type from the literature, indicating that it is an intermediate‑mass young star, likely belonging to the Herbig Ae/Be family rather than the low‑mass T Tauri population. Its infrared properties and youth indicators are consistent with a star that has recently formed and is still evolving toward the main sequence.
Stellar Mass Estimate
A B8V spectral type corresponds to an intermediate‑mass star, typically in the range of 3 to 4 solar masses. The Gaia parallax of approximately 1.09 mas places the star at a distance of around 900 parsecs, consistent with the luminosity expected for a young B‑type object. Its infrared excess suggests the presence of a circumstellar disk, but the underlying stellar mass is dominated by the B‑type photosphere, making it significantly more massive than the low‑mass YSOs in the same region.
Age Estimate
As a young stellar object with a B8V spectral type, TIC 322312572 is expected to be extremely young, likely less than a few million years old. Intermediate‑mass stars evolve rapidly, and the presence of infrared excess and youth classifications indicates that the star is still in the pre‑main‑sequence phase. An age of roughly 1 to 3 million years is consistent with both its spectral type and its infrared properties.
Spectral Energy Distribution (SED) Reconstruction
The available photometry shows a bright optical Gaia magnitude (G ≈ 13.06) and a smooth rise into the near‑infrared (J ≈ 11.43, H ≈ 11.12, K ≈ 10.96). This pattern reflects a hot B‑type stellar photosphere combined with mild reddening and a modest infrared excess. The SED would therefore show a strong blue‑optical component characteristic of a B8V star, transitioning into a slightly elevated infrared tail produced by warm circumstellar dust. This morphology is typical of young intermediate‑mass stars with evolving disks, consistent with a Herbig Ae/Be‑like object.
