“NGC 4041”的意思、由来-开放百科全书

The galaxy is inclined by around 20° to the line of sight from the Earth.^[13] It is forming new stars at the estimated rate of {{nowrap|4.10 {{Solar mass|link=y}} yr⁻¹}}, which is fairly typical for a galaxy of this morphology. The star formation rate is much higher in the central region, which may be the result of recent merger with a dwarf galaxy within the last 100 million years.^[7]

This galaxy has no detected activity in the nuclear region. There is a rotating nuclear disk of high brightness at the core that is consistent with the presence of a compact mass of {{val|1e7|0.6|0.7}} {{Solar mass|link=y}}. Most likely this is a supermassive black hole (SMBH).^[13]^[16]

On July 29, 1994, the type IIp supernova designated SN 1994W was discovered in this galaxy by Giancarlo Cortini and Mirko Villi. The event reached peak visual magnitude on August 13, and declined thereafter.^[17] It was located about 19 arc seconds to the northwest of the nucleus.^[18] This supernova was unusual for the exceptionally low quantity of nickel-56 released—indeed, it was the lowest inferred amount measured for any type II supernova as of that date.^[17] Based upon a possible detection of X-ray emission from the remnant, this may be a high-luminosity type IIn supernova.^[18]

NGC 4041 is a member of the LGG 266 galaxy group, along with NGC 4036, IC 758, UGC 7009, and UGC 7019. It is located just 17 arc minutes from NGC 4036, and the two form a pair with a projected separation of around {{convert|143|kpc|kly|abbr=on|order=flip}}.^[6]

References

1. ^¹²³{{Citation | last1 = Crook | first1 = Aidan C. | last2 = Huchra | first2 = John P. | last3 = Martimbeau | first3 = Nathalie | last4 = Masters | first4 = Karen L. | last5 = Jarrett | first5 = Tom | last6 = Macri | first6 = Lucas M. | display-authors = 1 | title = Groups of Galaxies in the Two Micron All Sky Redshift Survey | journal = The Astrophysical Journal | volume = 655 | issue = 2 | pages = 790–813 |date=February 2007 | doi = 10.1086/510201 | bibcode = 2007ApJ...655..790C | arxiv = astro-ph/0610732 | postscript = .}}
2. ^¹{{citation | display-authors=1 | last1=Kochanek | first1=C. S. | last2=Pahre | first2=M. A. | last3=Falco | first3=E. E. | last4=Huchra | first4=J. P. | last5=Mader | first5=J. | last6=Jarrett | first6=T. H. | last7=Chester | first7=T. | last8=Cutri | first8=R. | last9=Schneider | first9=S. E. | title=The K-Band Galaxy Luminosity Function | journal=The Astrophysical Journal | volume=560 | issue=2 | pages=566–579 | date=October 2001 | doi=10.1086/322488 | bibcode=2001ApJ...560..566K | postscript = .|arxiv = astro-ph/0011456 }}
3. ^¹²³{{citation | display-authors=1 | last1=Konstantopoulos | first1=I. S. | last2=Smith | first2=L. J. | last3=Adamo | first3=A. | last4=Silva-Villa | first4=E. | last5=Gallagher | first5=J. S. | last6=Bastian | first6=N. | last7=Ryon | first7=J. E. | last8=Westmoquette | first8=M. S. | last9=Zackrisson | first9=E. | last10=Larsen | first10=S. S. | last11=Weisz | first11=D. R. | last12=Charlton | first12=J. C. | title=The Snapshot Hubble U-band Cluster Survey (SHUCS). I. Survey Description and First Application to the Mixed Star Cluster Population of NGC 4041 | journal=The Astronomical Journal | volume=145 | issue=5 | id=137 | pages=20 | date=May 2013 | doi=10.1088/0004-6256/145/5/137 | bibcode=2013AJ....145..137K | postscript=.|arxiv = 1302.6598 }}
4. ^¹²{{citation | display-authors=1 | last1=Cinzano | first1=P. | last2=Rix | first2=H.-W. | last3=Sarzi | first3=M. | last4=Corsini | first4=E. M. | last5=Zeilinger | first5=W. W. | last6=Bertola | first6=F. | title=The kinematics and the origin of the ionized gas in NGC 4036 | journal=Monthly Notices of the Royal Astronomical Society | volume=307 | issue=2 | pages=433–448 | date=August 1999 | doi=10.1046/j.1365-8711.1999.02617.x | bibcode=1999MNRAS.307..433C | arxiv=astro-ph/9903216 | postscript=.}}
5. ^¹{{citation | display-authors=1 | last1=Marconi | first1=A. | last2=Axon | first2=D. J. | last3=Capetti | first3=A. | last4=Maciejewski | first4=W. | last5=Atkinson | first5=J. | last6=Batcheldor | first6=D. | last7=Binney | first7=J. | last8=Carollo | first8=C. M. | last9=Dressel | first9=L. | last10=Ford | first10=H. | last11=Gerssen | first11=J. | last12=Hughes | first12=M. A. | last13=Macchetto | first13=D. | last14=Merrifield | first14=M. R. | last15=Scarlata | first15=C. | last16=Sparks | first16=W. | last17=Stiavelli | first17=M. | last18=Tsvetanov | first18=Z. | last19=van der Marel | first19=R. P. | title=Is There Really a Black Hole at the Center of NGC 4041? Constraints from Gas Kinematics | journal=The Astrophysical Journal | volume=586 | issue=2 | pages=868–890 | date=April 2003 | doi=10.1086/367764 | bibcode=2003ApJ...586..868M | postscript=.|arxiv = astro-ph/0211650 }}
6. ^¹²{{citation | display-authors=1 | last1=Sollerman | first1=Jesper | last2=Cumming | first2=Robert J. | last3=Lundqvist | first3=Peter | title=A Very Low Mass of 56Ni in the Ejecta of SN 1994W | journal=The Astrophysical Journal | volume=493 | issue=2 | pages=933–939 | date=January 1998 | doi=10.1086/305163 | bibcode=1998ApJ...493..933S | postscript=.|arxiv = astro-ph/9709061 }}
7. ^¹²{{citation | last1=Schlegel | first1=Eric M. | title=X-Ray Detection of SN 1994W in NGC 4041? | journal=The Astrophysical Journal | volume=527 | issue=2 | pages=L85–L88 | date=December 1999 | doi=10.1086/312408 | bibcode=1999ApJ...527L..85S | postscript=.|arxiv = astro-ph/9910425 }}
8. ^¹²{{citation | last1=Barth | first1=Aaron J. | title=Black Hole Masses in Active Galaxies | work=The Interplay Among Black Holes, Stars and ISM in Galactic Nuclei, Proceedings of IAU Symposium, No. 222 | editor1-first=T. | editor1-last=Storchi-Bergmann | editor2-first=L.C. | editor2-last=Ho | editor3-first=Henrique R. | editor3-last=Schmitt | pages=11–13 | date=November 2004 | location=Cambridge, UK | publisher=Cambridge University Press | url=https://books.google.com/books?id=4AfLsqU9re4C&pg=PA11 | doi=10.1017/S1743921304001334 | bibcode=2004IAUS..222....3B | postscript=. | volume=2004| isbn=9780521848039 }}
9. ^¹{{citation | last=De Vaucouleurs | first=G. | authorlink=Gérard de Vaucouleurs | title=Classification and Morphology of External Galaxies | journal=Handbuch der Physik | volume=53 |pages=275 | date=1959 | bibcode = 1959HDP....53..275D | postscript=.}}
10. ^¹{{cite simbad | title=NGC 4041 | accessdate=2015-11-17 | postscript=.}}

词条	NGC 4041
释义	References {{Infobox galaxy \| name = NGC 4041 \| image = NGC 4041 hst 09042 R814G606B450.png \| caption = NGC 4041 by the Hubble Space Telescope \| epoch = J2000 \| pronounce = \| constellation_name = Ursa Major \| ra = {{RA\|12\|02\|12.173}} \| dec = {{DEC\|+62\|08\|14.23}} \| z = 0.004113^[3] \| h_radial_v = 1,214^[4] \| gal_v = \| dist_ly = {{convert\|21.57\|Mpc\|Mly\|abbr=on\|lk=on\|order=flip}}^[4] \| group_cluster = LGG 266^[6] \| type = SA(rs)bc?^[7] \| mass = \| mass_light_ratio = \| size = \| stars = \| appmag_v = \| appmag_b = \| absmag_v = \| size_v = {{nowrap\|1.697′ × 1.391′}} \| notes = \| names = 2MASX J12021217+6208142, IRAS 11596+6224 , LEDA 37999, UGC 7014, UZC J120212.2+620814, Z 292-61.^[9] \| references = }}NGC 4041 is the New General Catalogue identifier for a spiral galaxy in the northern circumpolar constellation of Ursa Major. It is located an estimated 70 million light years from the Sun.^[4] The morphological classification of SA(rs)bc^[7] indicates this is a spiral galaxy the lacks a bar; the 'rs' means it has a weakly-formed ring structure, and the 'bc' indicates the spiral arms are moderately to loosely wound.^[12] The galaxy is inclined by around 20° to the line of sight from the Earth.^[13] It is forming new stars at the estimated rate of {{nowrap\|4.10 {{Solar mass\|link=y}} yr⁻¹}}, which is fairly typical for a galaxy of this morphology. The star formation rate is much higher in the central region, which may be the result of recent merger with a dwarf galaxy within the last 100 million years.^[7] This galaxy has no detected activity in the nuclear region. There is a rotating nuclear disk of high brightness at the core that is consistent with the presence of a compact mass of {{val\|1e7\|0.6\|0.7}} {{Solar mass\|link=y}}. Most likely this is a supermassive black hole (SMBH).^[13]^[16] On July 29, 1994, the type IIp supernova designated SN 1994W was discovered in this galaxy by Giancarlo Cortini and Mirko Villi. The event reached peak visual magnitude on August 13, and declined thereafter.^[17] It was located about 19 arc seconds to the northwest of the nucleus.^[18] This supernova was unusual for the exceptionally low quantity of nickel-56 released—indeed, it was the lowest inferred amount measured for any type II supernova as of that date.^[17] Based upon a possible detection of X-ray emission from the remnant, this may be a high-luminosity type IIn supernova.^[18] NGC 4041 is a member of the LGG 266 galaxy group, along with NGC 4036, IC 758, UGC 7009, and UGC 7019. It is located just 17 arc minutes from NGC 4036, and the two form a pair with a projected separation of around {{convert\|143\|kpc\|kly\|abbr=on\|order=flip}}.^[6] References 1. ^¹²³{{Citation \| last1 = Crook \| first1 = Aidan C. \| last2 = Huchra \| first2 = John P. \| last3 = Martimbeau \| first3 = Nathalie \| last4 = Masters \| first4 = Karen L. \| last5 = Jarrett \| first5 = Tom \| last6 = Macri \| first6 = Lucas M. \| display-authors = 1 \| title = Groups of Galaxies in the Two Micron All Sky Redshift Survey \| journal = The Astrophysical Journal \| volume = 655 \| issue = 2 \| pages = 790–813 \|date=February 2007 \| doi = 10.1086/510201 \| bibcode = 2007ApJ...655..790C \| arxiv = astro-ph/0610732 \| postscript = .}} 2. ^¹{{citation \| display-authors=1 \| last1=Kochanek \| first1=C. S. \| last2=Pahre \| first2=M. A. \| last3=Falco \| first3=E. E. \| last4=Huchra \| first4=J. P. \| last5=Mader \| first5=J. \| last6=Jarrett \| first6=T. H. \| last7=Chester \| first7=T. \| last8=Cutri \| first8=R. \| last9=Schneider \| first9=S. E. \| title=The K-Band Galaxy Luminosity Function \| journal=The Astrophysical Journal \| volume=560 \| issue=2 \| pages=566–579 \| date=October 2001 \| doi=10.1086/322488 \| bibcode=2001ApJ...560..566K \| postscript = .\|arxiv = astro-ph/0011456 }} 3. ^¹²³{{citation \| display-authors=1 \| last1=Konstantopoulos \| first1=I. S. \| last2=Smith \| first2=L. J. \| last3=Adamo \| first3=A. \| last4=Silva-Villa \| first4=E. \| last5=Gallagher \| first5=J. S. \| last6=Bastian \| first6=N. \| last7=Ryon \| first7=J. E. \| last8=Westmoquette \| first8=M. S. \| last9=Zackrisson \| first9=E. \| last10=Larsen \| first10=S. S. \| last11=Weisz \| first11=D. R. \| last12=Charlton \| first12=J. C. \| title=The Snapshot Hubble U-band Cluster Survey (SHUCS). I. Survey Description and First Application to the Mixed Star Cluster Population of NGC 4041 \| journal=The Astronomical Journal \| volume=145 \| issue=5 \| id=137 \| pages=20 \| date=May 2013 \| doi=10.1088/0004-6256/145/5/137 \| bibcode=2013AJ....145..137K \| postscript=.\|arxiv = 1302.6598 }} 4. ^¹²{{citation \| display-authors=1 \| last1=Cinzano \| first1=P. \| last2=Rix \| first2=H.-W. \| last3=Sarzi \| first3=M. \| last4=Corsini \| first4=E. M. \| last5=Zeilinger \| first5=W. W. \| last6=Bertola \| first6=F. \| title=The kinematics and the origin of the ionized gas in NGC 4036 \| journal=Monthly Notices of the Royal Astronomical Society \| volume=307 \| issue=2 \| pages=433–448 \| date=August 1999 \| doi=10.1046/j.1365-8711.1999.02617.x \| bibcode=1999MNRAS.307..433C \| arxiv=astro-ph/9903216 \| postscript=.}} 5. ^¹{{citation \| display-authors=1 \| last1=Marconi \| first1=A. \| last2=Axon \| first2=D. J. \| last3=Capetti \| first3=A. \| last4=Maciejewski \| first4=W. \| last5=Atkinson \| first5=J. \| last6=Batcheldor \| first6=D. \| last7=Binney \| first7=J. \| last8=Carollo \| first8=C. M. \| last9=Dressel \| first9=L. \| last10=Ford \| first10=H. \| last11=Gerssen \| first11=J. \| last12=Hughes \| first12=M. A. \| last13=Macchetto \| first13=D. \| last14=Merrifield \| first14=M. R. \| last15=Scarlata \| first15=C. \| last16=Sparks \| first16=W. \| last17=Stiavelli \| first17=M. \| last18=Tsvetanov \| first18=Z. \| last19=van der Marel \| first19=R. P. \| title=Is There Really a Black Hole at the Center of NGC 4041? Constraints from Gas Kinematics \| journal=The Astrophysical Journal \| volume=586 \| issue=2 \| pages=868–890 \| date=April 2003 \| doi=10.1086/367764 \| bibcode=2003ApJ...586..868M \| postscript=.\|arxiv = astro-ph/0211650 }} 6. ^¹²{{citation \| display-authors=1 \| last1=Sollerman \| first1=Jesper \| last2=Cumming \| first2=Robert J. \| last3=Lundqvist \| first3=Peter \| title=A Very Low Mass of 56Ni in the Ejecta of SN 1994W \| journal=The Astrophysical Journal \| volume=493 \| issue=2 \| pages=933–939 \| date=January 1998 \| doi=10.1086/305163 \| bibcode=1998ApJ...493..933S \| postscript=.\|arxiv = astro-ph/9709061 }} 7. ^¹²{{citation \| last1=Schlegel \| first1=Eric M. \| title=X-Ray Detection of SN 1994W in NGC 4041? \| journal=The Astrophysical Journal \| volume=527 \| issue=2 \| pages=L85–L88 \| date=December 1999 \| doi=10.1086/312408 \| bibcode=1999ApJ...527L..85S \| postscript=.\|arxiv = astro-ph/9910425 }} 8. ^¹²{{citation \| last1=Barth \| first1=Aaron J. \| title=Black Hole Masses in Active Galaxies \| work=The Interplay Among Black Holes, Stars and ISM in Galactic Nuclei, Proceedings of IAU Symposium, No. 222 \| editor1-first=T. \| editor1-last=Storchi-Bergmann \| editor2-first=L.C. \| editor2-last=Ho \| editor3-first=Henrique R. \| editor3-last=Schmitt \| pages=11–13 \| date=November 2004 \| location=Cambridge, UK \| publisher=Cambridge University Press \| url=https://books.google.com/books?id=4AfLsqU9re4C&pg=PA11 \| doi=10.1017/S1743921304001334 \| bibcode=2004IAUS..222....3B \| postscript=. \| volume=2004\| isbn=9780521848039 }} 9. ^¹{{citation \| last=De Vaucouleurs \| first=G. \| authorlink=Gérard de Vaucouleurs \| title=Classification and Morphology of External Galaxies \| journal=Handbuch der Physik \| volume=53 \|pages=275 \| date=1959 \| bibcode = 1959HDP....53..275D \| postscript=.}} 10. ^¹{{cite simbad \| title=NGC 4041 \| accessdate=2015-11-17 \| postscript=.}} ^[1]^[2]^[3]^[4]^[5]^[6]^[7]^[8]^[9]^[10] }}{{Ngc45\|state=collapsed}} 5 : Unbarred spiral galaxies\|Ursa Major (constellation)\|NGC objects\|UGC objects\|Principal Galaxies Catalogue objects
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