| NGC 2935 | |
| Epoch: | J2000 |
| Constellation Name: | Hydra |
| Sbrightness: | 23.9 mag/arcsec^2 |
| Ra: | 09h 36m 45s |
| Dec: | -21° 07 41 |
| Type: | SAb |
| Names: | PGC 27351, ESO 565-23, UGCA 169, MCG -3-25-11, IRAS 09344-2054 |
NGC 2935 is a large intermediate spiral galaxy located in the constellation Hydra. Its speed relative to the cosmic microwave background is 2,601 ± 23 km/s, which corresponds to a Hubble distance of 38.4 ± 2.7 Mpc (~125 million ly). NGC 2935 was discovered by German-British astronomer William Herschel in 1786.[1]
NGC 2935 was used by Gérard de Vaucouleurs as a galaxy of morphological type (R2')SAB(s)b in his galaxy atlas. The luminosity class of NGC 2935 is II and it has a broad HI line. In addition, it is a star-forming burst galaxy.[2]
To date, 29 studies and measurements based on redshift give a distance of 27.890 ± 3.962 Mpc (~91 million ly),[3] which is outside the Hubble distance values. Note that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database calculates the diameter of a galaxy and that consequently the diameter of NGC 2935 could be approximately 78, 1 kpc (~255,000 ly) if we used the Hubble distance to calculate it.[4]
Observations from the Hubble Space Telescope have concluded that a star-forming disk is present around the core of NGC 2935. The size of its semi-major axis is estimated at 530 pc (~1730 light years) at the estimated distance of this galaxy.[5]
Four supernovae have been discovered in NGC 2935: SN 1975F, SN 1996Z, SN 2021mwj, and SN 2021aczp.[6]
This supernova was discovered on June 11, 1975, by Mr. J. R. Dunlap of the Corralitos Observatory at Northwestern University. The type of this supernova has not been determined.
This supernova was discovered on May 16, 1996, by Wayne Johnson.[7] This supernova was type Ia.[8]
This supernova was discovered on 21 May 2021 by ATLAS. At apparent magnitude 17.7, it was determined to be type II.[9]
This supernova was discovered on 1 November 2021 by ATLAS. At apparent magnitude 18.9, it was determined to be type II.[10]
NGC 2935 is part of a small group of three galaxies named after it. The other two galaxies in the NGC 2935 group are NGC 2983 and NGC 2986.[11]