PGC 2387685
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| PGC 2387685 | |
|---|---|
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| Observation data (J2000 epoch) | |
| Constellation | Hercules |
| Right ascension | 16h 13m 32.3s |
| Declination | +51° 03′ 42.9″ |
| Redshift | 0.033468 |
| Distance | 440 Mly (134.9 Mpc) |
| Characteristics | |
| Size | 0.42' x 0.27' |
| Other designations | |
| LEDA 2387685, NSA 146829, 2MASX J16133219+5103426 | |
PGC 2387685 is a peculiar galaxy located 440 million light-years in the Hercules constellation.[1][2] It forms the galaxy pair, ZW I 136, with its companion, SDSS J161330.18+510335.5 (PGC 3087279).[3][4] Both galaxies seem to interact with each other causing their distorted appearances.[5][6]
PGC 2387685 is classfied as a post starburst galaxy (E+A).[6] Using long-slit spectroscopy of PGC 2387685, it is determined, the galaxy's poststarburst signatures stretches from the core region to its tidal plume.[6] Its metallicity is estimated, which the E+A galaxy's age is found to be 100-500 Myr. However, it contains young stars in the central region.[7]
The companion galaxy, SDSS J161330.18+510335.5 is a passive S0 galaxy with an old stellar population.[7] It shows no recent signs star formation activity.[6] The galaxy lies 14 kpc behind PGC 2387685 with a 61.8 km-1 velocity difference.[7]
References
[edit]- ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-17.
- ^ "SIMBAD query result". simbad.u-strasbg.fr. Retrieved 2024-04-17.
- ^ "Hubble Stirs Up Galactic Soup - NASA Science". science.nasa.gov. Retrieved 2024-09-09.
- ^ Yamauchi, Chisato; Yagi, Masafumi; Goto, Tomotsugu (2008-10-11). "E+A and companion galaxies - I. A catalogue and statistics". Monthly Notices of the Royal Astronomical Society. 390 (1): 383–398. arXiv:0809.0890. Bibcode:2008MNRAS.390..383Y. doi:10.1111/j.1365-2966.2008.13756.x. ISSN 0035-8711.
- ^ information@eso.org. "Galactic soup". www.spacetelescope.org. Retrieved 2024-04-17.
- ^ a b c d Yagi, Masafumi; Goto, Tomotsugu; Hattori, Takashi (2006-05-01). "Interacting E+A System SDSS J161330.18+510335.5. I. Spatially Extended Poststarburst Signatures and Age Gradient". The Astrophysical Journal. 642 (1): 152–157. Bibcode:2006ApJ...642..152Y. doi:10.1086/500795. ISSN 0004-637X.
- ^ a b c Goto, Tomotsugu; Yagi, Masafumi; Yamauchi, Chisato (2008-12-01). "Spatially resolved medium resolution spectroscopy of an interacting E+A (post-starburst) system with the Subaru Telescope★". Monthly Notices of the Royal Astronomical Society. 391 (2): 700–710. arXiv:0809.0891. Bibcode:2008MNRAS.391..700G. doi:10.1111/j.1365-2966.2008.13891.x. ISSN 0035-8711.
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