Astronomy:RSGC1-F01
RSGC1-F01 is a red supergiant star in the young open cluster RSGC1 located in the constellation of Scutum. The radius was calculated to be around 1,450[1]-1,530[2] times that of the Sun (the radius is calculated by applying the Stefan-Boltzmann law), making it one of the largest stars discovered so far.[3][4] This corresponds to a volume 3.58 billion times bigger than the Sun. If placed at the center of the Solar System, the photosphere would engulf the orbit of Jupiter.
The star is heavily obscured by interstellar dust and is invisible in optical wavelengths, it has only been studied through infrared and submillimeter observations.[5] RSGC1 itself was discovered in 2006 using data from infrared surveys.[6]
Observation
ALMA observations in 2024 detected CO rotational line emission from RSGC1-F01 and several other cluster members, allowing direct measurement of gas mass-loss rates and wind velocities.[1] The wind speed for RSGC1-F01 (along with F02, F03, and F04) is 11±3 km/s.[1] These data have contributed to a new mass-loss rate prescription for M-type red supergiants with effective temperatures between roughly 3,200 and 3,800 K, showing that CO-derived rates are systematically lower than dust-based estimates.[1]
RSGC1-F01 is a member of a cluster estimated to be 10–14 million years old with a total mass of about 30,000 solar masses (M☉). All red supergiants in RSGC1 share similar initial masses (around 25 M☉), making the cluster a valuable for studying the evolution and mass loss of massive stars.[1]
Gallery
-
Spitzer wide-field image of surroundings region around RSGC1 cluster in which RSGC1-F01 is a member -
-
Artistic representation of RSGC1 cluster
.jpg)
.jpg)
.jpg)
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Cite error: Invalid
<ref>tag; no text was provided for refs namedalmarsg - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedmassloss2020 - ↑ "Top 10 largest stars in the Universe". 2024-01-31. https://www.sciencefocus.com/space/largest-stars-in-the-universe.
- ↑ "RSGC1-F01 – a Red Supergiant Star in the Scutum Constellation". https://assignmentpoint.com/rsgc1-f01-a-red-supergiant-star-in-the-scutum-constellation/.
- ↑ admin (2025-08-29). "RSGC1-F01 | Star Facts". https://www.star-facts.com/rsgc1-f01/.
- ↑ Figer, Donald F.; MacKenty, John W.; Robberto, Massimo; Smith, Kester; Najarro, Francisco; Kudritzki, Rolf P.; Herrero, Artemio (June 2006). "Discovery of an Extraordinarily Massive Cluster of Red Supergiants". The Astrophysical Journal 643 (2): 1166–1179. doi:10.1086/503275. ISSN 0004-637X. Bibcode: 2006ApJ...643.1166F. https://iopscience.iop.org/article/10.1086/503275.
 |  |
