Messier 88

Messier 88
Spiral Galaxy Messier 88
Data pengamatan
Epos J2000
Rasi bintang Coma Berenices
Asensio rekta  12j 31m 59.2d[1]
Deklinasi  +14° 25′ 14″[1]
Diameter sudut (V) 6.9 × 3.7 moa[1]
Magnitudo semu (V)10.4[1]
Ciri-ciri
JenisSA(rs)b, HII Sy2[1]
Astrometri
Kecepatan radial heliosentrik 2281 ± 3[1]km/s
Pergeseran merah 0.007609 ± 0.000010[1]
Kecepatan galaktosentrik 2235 ± 4 km/s
Jarak 47 ± 8 Mly (14,41 ± 2,45 Mpc)
Sebutan lainnya
NGC 4501, UGC 7675, PGC 41517, VCC 1401[1]
Rujukan pangkalan data
SIMBAD Search M88 data
Lihat juga: Galaksi, Daftar galaksi

Messier 88 (juga dikenal sebagai M88 atau NGC 4501) adalah sebuah Galaksi Spiral yang berjarak 50 sampai 60 juta tahun cahaya jauhnya[2][3][4] yang terletak di Konstelasi Coma Berenices. Galaksi ini di temukan oleh Charles Messier pada 1781.

Karakteristik

Messier 88, 24 inch telescope on Mt. Lemmon, AZ.

M88 adalah salah satu dari lima belas objek Messier yang termasuk dekat dengan Klaster Virgo Galaksi. Galaksi ini adalah galaksi nomor 1401 di Virgo Cluster katalog ( VCC ) dari 2.096 galaksi yang dicalonkan menjadi anggota Klaster.[5] M88 mungkin pada orbit yang sangat elips yang membawanya menuju pusat klaster, yang ditempati oleh raksasa Galaksi Elips M87. Saat ini berjarak 0.3–0.48 juta parsecs dari pusatnya dan akan semakin mendekat ke pusatnya yang berjarak 200–300 juta tahun. Pergerakan dari M88 melalui Intergalaktik sederhana dari Klaster Virgo membuat tekanan ram yang mengupas sepanjang regio luar dari hidrogen netral. Pengupasan ini sudah terdeteksi sepanjang arah barat, bagian depan batas dari galaksi.[6]

M88 by Hubble space telescope

Galaksi ini cenderung terlihat pada garis 64°.[7] Hal ini diklasifikasikan sebagai spiral Sbc, yang terletak di antara Sb dan Sc kategori menengah dan lengan spiral longgar masing-masing. Struktur lengan spiral sangat teratur dan dapat diikuti sampai ke inti galaksi.[8] Kecepatan perputaran Maksimum gasnya adalah 241.6 ± 4.5 km/d.[9]

M88 juga di klasifikasikan menjadi 2 tipe Galaksi seyfert, yang berarti menghasilkan penyempitan garis spectral emisi dari ionisasi gas secara tinggi di pusat galaksi.[10] Di wilayah inti ada kondensasi pusat dengan 230 diameter parsek, yang memiliki dua puncak konsentrasi. Kondensasi ini mendapat aliran energi dari lengan spiral.[11] Lubang hitam Raksasa pada pusat galaksi ini memiliki 107.9 massa matahari, atau sekitar 80 juta kali massa matahari.[12]

Pada 1999, supernova 1999cl telah ditemukan di galaksi ini.[13]

Lihat Juga

Referensi

  1. ^ a b c d e f g h "Results for NGC 4501". NASA/IPAC Extragalactic Database. California Institute of Technology. Diakses tanggal 2006-11-14. 
  2. ^ "Object Information". 20 September 2009. Diakses tanggal 26 December 2012. 
  3. ^ "Explanation". 30 January 2010. Diakses tanggal 26 December 2012. 
  4. ^ "M88". 29 June 2011. Diakses tanggal 26 December 2012. 
  5. ^ Binggeli, B.; Sandage, A.; Tammann, G. A. (1985). "Studies of the Virgo Cluster. II – A catalog of 2096 galaxies in the Virgo Cluster area". Astronomical Journal. 90: 1681–1759. Bibcode:1985AJ.....90.1681B. doi:10.1086/113874. 
  6. ^ Vollmer, B.; et al. (2008). "Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501". Astronomy and Astrophysics. 483 (1): 89–106. arXiv:0801.4874alt=Dapat diakses gratis. Bibcode:2008A&A...483...89V. doi:10.1051/0004-6361:20078139. 
  7. ^ Tully, R. B.; Fisher, J. R. (1977). "A new method of determining distances to galaxies". Astronomy and Astrophysics. 54 (3): 661–673. Bibcode:1977A&A....54..661T. 
  8. ^ Möllenhoff, C.; Heidt, J. (2001). "Surface photometry of spiral galaxies in NIR: Structural parameters of disks and bulges". Astronomy and Astrophysics. 368 (1): 16–37. Bibcode:2001A&A...368...16M. doi:10.1051/0004-6361:20000335. 
  9. ^ "Database for physics of galaxies". HyperLeda. Université de Lyon. Diakses tanggal 2009-09-16. 
  10. ^ L. S. Sparke; J. S. Gallagher III (2007). Galaxies in the Universe: An Introduction. Cambridge University Press. ISBN 978-0-521-67186-6. 
  11. ^ Onodera, S.; Sofue, Y.; Koda, J.; Nakanishi, H.; Kohno, K. (2002). "CO (J=1-0) Observations of the Non-Barred Seyfert 2 Galaxy NGC 4501". Dalam Ikeuchi, S.; Hearnshaw, J.; Hanawa, T. Proceedings of the IAU 8th Asian-Pacific Regional Meeting. Bibcode:2002aprm.conf..199O. 
  12. ^ Merloni, Andrea; Heinz, Sebastian; di Matteo, Tiziana (2003). "A Fundamental Plane of black hole activity". Monthly Notices of the Royal Astronomical Society. 345 (4): 1057–1076. arXiv:astro-ph/0305261alt=Dapat diakses gratis. Bibcode:2003MNRAS.345.1057M. doi:10.1046/j.1365-2966.2003.07017.x. 
  13. ^ James, N. D. (1999). "Supernova 1999cl in NGC 4501 (M88)". Journal of the British Astronomical Association. 109 (4): 178. Bibcode:1999JBAA..109..178J. 

Pranala luar

Koordinat: Peta langit 12h 31m 59.2s, +14° 25′ 14″

Templat:List of Seyfert galaxies


Katagori:Galaksi Spiral Katagori:Galaksi tak berpalang Katagori:Klaster Virgo Katagori:Coma Berenices (Konstelasi) 088 Katagori:Objek NGC 07675 41517 Katagori:Objek Astronomi yang di temukan pada tahun 1781

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