NGC 2935
| NGC 2935 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Hydra |
| Right ascension | 09h 36m 45s |
| Declination | -21° 07’ 41” |
| Surface brightness | 23.9 mag/arcsec^2 |
| Characteristics | |
| Type | SAb |
| Other designations | |
| 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]
Nuclei disk[edit]
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.[citation needed]
Supernovae[edit]
Two supernovas have been discovered in NGC 2935: SN 1975F and SN 1996Z.[5]
SN1975F[edit]
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.[5]
SN1996Z[edit]
This supernova was discovered on May 16, 1996 by Wayne Johnson[6]. This supernova was type Ia.[7]
NGC 2935 Group[edit]
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.
See also[edit]
External links[edit]
References[edit]
- ^ "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-06-05.
- ^ astrovalleyfield.ca http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N2900_exc_web.htm. Retrieved 2024-06-05.
{{cite web}}: Missing or empty|title=(help) - ^ "New General Catalog Objects: NGC 2900 - 2949". cseligman.com. Retrieved 2024-06-05.
- ^ "Gérard de Vaucouleurs' Atlas of Galaxies". cseligman.com. Retrieved 2024-06-05.
- ^ a b "IAUC 2782: SNe; AL Com; Occn OF epsilon Gem BY MARS ON 1976 Apr. 8; 1973m; 1975d". www.cbat.eps.harvard.edu. Retrieved 2024-06-05.
- ^ "Facebook". www.facebook.com. Retrieved 2024-06-05.
- ^ "NGC 2935", Wikipédia (in French), 2024-01-15, retrieved 2024-06-05