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NGC 3861

NGC 3861
Ο NGC 3861. Κάτω αριστερά διακρίνεται επίσης ο γαλαξίας MCG +03-30-094. Φωτογραφία από το SDSS.
Παρατηρησιακά Δεδομένα (εποχή J2000)
ΑστερισμόςΛέων
Ορθή Αναφορά11h 45m 03.9s[1]
Απόκλιση19° 58′ 25″[1]
Μετατόπιση στο ερυθρό0.016982[1]
Απόσταση310 Mly (95,1 Mpc)[1]
Ομάδα ή σμήνος γαλαξιώνΣμήνος του Λέοντα
Τύπος Γαλαξία(R')SAB(r)b[1]
Φαινόμενη διάμετρος (V)2.53 x 0.99[1]
Φαινόμενο μέγεθος (V)13.7[1]
Άλλες ονομασίες
CGCG 97-129, IRAS 11424+2015, KCPG 299A, MCG 3-30-93, PGC 36604, UGC 6724[1]
Δείτε επίσης: Γαλαξίες, Κατάλογος γαλαξιών

Ο NGC 3861 είναι μεγάλος[2] ραβδωτός σπειροειδής γαλαξίας[3][4] με δακτυλιοειδή δομή[3] ο οποίος απέχει περίπου 310 εκατομμύρια έτη φωτός από το Ηλιακό Σύστημα[5] και βρίσκεται στον αστερισμό Λέοντα.[6] Ανακαλύφθηκε από τον αστονόμο Τζον Χέρσελ (John Herschel) στις 23 Μαρτίου 1827.[7] Ανήκει στο σμήνος γαλαξιών Λέοντα και περιέχει κανονικές ποσότητες H I καθώς και ιονισμένου υδρογόνου (H II).[2] Επίσης είναι χαμηλής φωτεινότητας γαλαξίας Σίφερτ τύπου ΙΙ[8] ο οποίος όμως ταξινομείται και ως γαλαξίας LINER.[9][10]

Υπερκαινοφανής

Στις 7 Μαρτίου 2014 παρατηρήθηκε στον NGC 3861 o υπερκαινοφανής τύπου Ia SN2014aa.[11][12][13]

Παραπομπές

  1. 1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 «NASA/IPAC Extragalactic Database». Results for NGC 3861. Ανακτήθηκε στις 27 Ιουλίου 2018. 
  2. 2,0 2,1 Scott, T. C.; Usero, A.; Brinks, E.; Boselli, A.; Cortese, L.; Bravo-Alfaro, H. (2012-12-03). «CO in late-type galaxies within the central region of Abell 1367» (στα αγγλικά). Monthly Notices of the Royal Astronomical Society 429 (1): 221–241. doi:10.1093/mnras/sts328. ISSN 1365-2966. 
  3. 3,0 3,1 «HyperLeda -object description». leda.univ-lyon1.fr. Ανακτήθηκε στις 28 Ιουλίου 2018. 
  4. «Your NED Search Results». ned.ipac.caltech.edu. Ανακτήθηκε στις 28 Ιουλίου 2018. 
  5. «NED Query Results for NGC 3861». ned.ipac.caltech.edu (στα Αγγλικά). Ανακτήθηκε στις 28 Ιουλίου 2018. 
  6. «Revised NGC Data for NGC 3861». spider.seds.org. Ανακτήθηκε στις 28 Ιουλίου 2018. 
  7. «New General Catalog Objects: NGC 3850 - 3899». cseligman.com (στα Αγγλικά). Ανακτήθηκε στις 17 Ιουλίου 2018. 
  8. Sun, M.; Murray, S. S. (2002). «Chandra View of the Dynamically Young Cluster of Galaxies A1367. II. Point Sources» (στα αγγλικά). The Astrophysical Journal 577 (1): 139–149. doi:10.1086/342156. ISSN 0004-637X. Bibcode2002ApJ...577..139S. http://stacks.iop.org/0004-637X/577/i=1/a=139. 
  9. Terashima, Yuichi; Hirata, Yoshitaka; Awaki, Hisamitsu; Oyabu, Shinki; Gandhi, Poshak; Toba, Yoshiki; Hideo Matsuhara (2015). «A New Sample of Obscured AGNs Selected from the XMM-Newton and AKARI Surveys» (στα αγγλικά). The Astrophysical Journal 814 (1): 11. doi:10.1088/0004-637X/814/1/11. ISSN 0004-637X. Bibcode2015ApJ...814...11T. http://stacks.iop.org/0004-637X/814/i=1/a=11. 
  10. «NGC 3861». http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+3861&QueryType=ned. Ανακτήθηκε στις 2018-07-28. 
  11. «Bright Supernovae - 2014». rochesterastronomy.org. Ανακτήθηκε στις 28 Ιουλίου 2018. 
  12. «SN 2014aa | Transient Name Server». wis-tns.weizmann.ac.il (στα Αγγλικά). Ανακτήθηκε στις 28 Ιουλίου 2018. 
  13. «2014aa - The Open Supernova Catalog». sne.space (στα Αγγλικά). Αρχειοθετήθηκε από το πρωτότυπο στις 28 Ιουλίου 2018. Ανακτήθηκε στις 28 Ιουλίου 2018. 

Αναφορές

Εξωτερικοί σύνδεσμοι

  • Πολυμέσα σχετικά με το θέμα NGC 3861 στο Wikimedia Commons


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