Variation of MisV1436 = QSO B0133+47 (Image: Nobuo Ohkura and Youichirou Nakashima)
Field of view: about 12 arcmin.
The variation of this quasar was discovered by Seiichi Yoshida (MISAO
Project) in the MISAO Project nova survey. It was picked up as one of
the nova candidates from Youichirou Nakashima (Okayama, Japan)'s
unfiltered CCD images on 2007 Nov. 11 by the PIXY System 2. Yoshida
checked Nakashima and Nobuo Ohkura (Okayama, Japan)'s CCD images
between 2000 and 2007, and confirmed that the object is a real
variable.
Here are the data of this quasar:
QSO B0133+47 QSO 01 36 58.5948 +47 51 29.100 18.0V
DA 55 01h36m58s.6 +47o51'29" 19.5 mag(O) -24.4 mag(abs) z=0.859
USNO-A2.0 1350.01532368 01h36m58s.635 +47o51'29".19 Mag(R):18.3 Mag(B):18.5
It is recorded as a very faint object at 18-19 mag in these catalogs.
However, it was so bright as 14 mag in 2007 November by the MISAO
Project observations.
Quasar is a very distant active galactic nucleus. It is usually
recorded by radio observations, but also optically visible. The radio
flux is variable, and it also changes its brightness optically.
However, Taichi Kato (Kyoto University) commented that a quasar with
such a large amplitude is rare.
(Supplement on February 10, 2008)
Kazuya Ayani (Bisei Observatory) commented that some quasars show strong
radio flux, but many part of quasars show weak radio flux.
This quasar will be classified as a blazar called "optically violently
variable QSO". Kazuya Ayani (Bisei Observatory) commented that it is a
rare type among quasars. This quasar is about 7 billion light years
from our planet, and the apparent brightness of 14 mag is
extraordinary at this distance.
This quasar has been well researched in the radio observations and
known to be radio variable, however, little observed optically. Nobody
has noticed that this quasar becomes so bright.
Therefore, we the MISAO Project registered it as the 1436th new
variable star, and assigned the designation "MisV1436".
MisV1436
| R.A. | 01h36m58s.63 |
|
| Decl. | +47o51'29".0 | (2000.0) |
| Mag. | 14.1-16.6C |
|
| Type | OVV-QSO |
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http://www.aerith.net/misao/data/misv.cgi?1436
Here are the observation data by the MISAO Project:
| 2000 Dec. 1.47 | 16.2 mag | (*1) |
| 2001 Dec. 11.46 | 15.5 mag | (*1) |
| 2002 Jan. 2.40 | 16.6 mag | (*1) |
| 2007 Sept.12.81 | 15.4 mag | (*2) |
| Oct. 6.75 | 15.3 mag | (*3) |
| Nov. 11.63 | 14.1 mag | (*2) |
| Dec. 3.52 | 14.9 mag | (*2) |
- (*1) Nobuo Ohkura 500-mm camera lens + SBIG ST-8
- (*2) Youichirou Nakashima 7.6-cm f/6.6 refractor + SBIG ST-8
- (*3) Nobuo Ohkura and Youichirou Nakashima 7.6-cm f/6.6 refractor + SBIG ST-8
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I also investigated the past brightness of this quasar in the
Digitized Sky Survey POSS-I / POSS-II plates using:
USNO Flagstaff Station Integrated Image and Catalogue Archive Service
http://www.nofs.navy.mil/data/FchPix/cfra.html
I selected one star with similar brightness around the quasar in each
plate. Here is the list with the magnitude in the USNO-A2.0 catalog.
Date Band Star with similar brightness to the quasar, and its brightness
---------------------------------------------------------------------------------
1953.7810 R 18.7 mag USNO-A2.0 1350-01532664 18.6R 18.9B
1953.7810 B 18.7 mag USNO-A2.0 1350-01532664 18.6R 18.9B
1989.7426 R 17.8 mag USNO-A2.0 1350-01531592 17.7R 17.9B
1989.7509 R 17.8 mag USNO-A2.0 1350-01531592 17.7R 17.9B
1990.8268 I 18.7 mag USNO-A2.0 1350-01532664 18.6R 18.9B
1991.7577 R 19.0 mag USNO-A2.0 1350-01532064 18.7R 19.5B
1992.8008 B 18.7 mag USNO-A2.0 1350-01532664 18.6R 18.9B
1992.9760 B 17.2 mag USNO-A2.0 1350-01533365 16.9R 17.8B
1993.6222 B 15.8 mag USNO-A2.0 1350-01532017 15.6R 16.1B
1993.7235 I 17.0 mag USNO-A2.0 1350-01530812 16.9R 17.1B
1995.8207 I 15.8 mag USNO-A2.0 1350-01532017 15.6R 16.1B
---------------------------------------------------------------------------------
2007.8620 CCD 14.2 mag USNO-A2.0 1350-01538026 13.9R 14.8B (*4)
Palomar plate in 1992 (MisV1436 is 18.7 mag)
Palomar plate in 1993 (MisV1436 is 15.8 mag)
This research has made use of the USNOFS Image and Catalogue Archive
operated by the United States Naval Observatory, Flagstaff Station
(http://www.nofs.navy.mil/data/fchpix/).
It has been so faint as around 18 mag until 1992. But small outbursts
have occurred twice in 1993 and 1995.
However, the quasar was much brighter than any past DSS plates in the
MISAO Project CCD images on 2007 November 11 (*4). The MISAO Project
succeeded to catch its brightest record in the history.
John Greaves investigated the UCAC2 and CMC14 catalogs. The UCAC2
catalog lists this quasar as 14.3 mag, which suggests this quasar was
very bright around mid July in 2002. The CMC14 catalog lists it as
15.0 mag, which also suggests it was bright around late 2002. The
standard deviation of the CMC14's magnitude is over 0.7 mag, which
suggests this quasar's variation.
Reinder J. Bouma searched the Skymorph archive and found that this
quasar was bright as 15.0 mag on 2002 September 24.
No records brighter than 18 mag have been found before 1992, and no
records fainter than 17 mag have been found after 1995. This quasar
may became very active in recent years.
Ayani commented that this quasar is highly polarized, typical for a
large optical variation. The spectrum in the following literature
shows broad emission lines, which supports that this quasar is
classified as an "optically violently variable QSO", not a BL Lac
object.
http://ads.nao.ac.jp//full/1996ApJS..107..541L/0000564.000.html
Greaves introduced the radiograms of this quasar at the NASA/IPAC
Extragalactic Database. Greaves commented that this object has a
relativistic radio jet, and the radio variability looks to stem from
the interaction of this jet.
Images and maps in NED archive for object [HB89] 0133+476
http://nedwww.ipac.caltech.edu/cgi-bin/nph-imgdata?objid=60740&objname=[HB89]%200133%2B476
(Supplement on February 10, 2008)
Our discovery was announced in CBET 1249.
(Supplement on February 14, 2008)
SIMBAD query result:
http://cdsweb.u-strasbg.fr/cgi-bin/bibobj?2005A%26A...434..449R&0133%2B476
(Supplement on February 26, 2008)
Kazuhiro Nakajima's image and observations:
http://www.ztv.ne.jp/web/K.Nakajima/Light_curve3/QSO_B133+47.htm
(Supplement on December 14, 2008)
John Greaves reported that an infrared flaring was observed in 2008 November by I.N.A.O.E. (Instituto Nacional de Astrofi'sica, Optica y Electro'nica) in Mexico.
Infrared flaring of the potential gamma-ray source QSO B0133+47
ATel #1874
http://www.astronomerstelegram.org/?read=1874
(Supplement on May 31, 2009)
During the season between 2008 and 2009, two outbursts occured in December and March, and it reached up to 14.5 mag on Dec. 18 and 14.8 mag on Mar. 18.
It had been around 16 mag from late December to early March.
A sudden temporary fading was observed by Miguel Rodriguez Marco on Jan. 7.
(Updated on May 31, 2009)
(Updated on May 31, 2009)
2009 Mar. 22.820 15.09 CV Miguel Rodriguez Marco
2009 Mar. 21.823 15.18 CV Miguel Rodriguez Marco
2009 Mar. 19.829 15.15 CV Miguel Rodriguez Marco
2009 Mar. 18.830 14.83 CV Miguel Rodriguez Marco
2009 Mar. 16.835 15.03 CV Miguel Rodriguez Marco
2009 Mar. 15.835 15.09 CV Miguel Rodriguez Marco
2009 Mar. 13.827 15.26 CV Miguel Rodriguez Marco
2009 Mar. 10.836 15.52 CV Miguel Rodriguez Marco
2009 Mar. 9.841 15.70 CV Miguel Rodriguez Marco
2009 Mar. 7.838 15.74 CV Miguel Rodriguez Marco
2009 Feb. 26.860 15.95 CV Miguel Rodriguez Marco
2009 Feb. 25.856 15.88 CV Miguel Rodriguez Marco
2009 Feb. 24.869 16.20 CV Miguel Rodriguez Marco
2009 Feb. 23.870 16.09 CV Miguel Rodriguez Marco
2009 Feb. 22.865 16.05 CV Miguel Rodriguez Marco
2009 Feb. 21.843 15.99 CV Miguel Rodriguez Marco
2009 Feb. 19.858 16.02 CV Miguel Rodriguez Marco
2009 Feb. 18.885 16.11 CV Miguel Rodriguez Marco
2009 Feb. 17.858 15.97 CV Miguel Rodriguez Marco
2009 Jan. 28.164 16.16 V Miguel Rodriguez Marco
2009 Jan. 17.911 15.79 CV Miguel Rodriguez Marco
2009 Jan. 16.970 15.84 CV Miguel Rodriguez Marco
2009 Jan. 11.961 15.91 CV Miguel Rodriguez Marco
2009 Jan. 7.915 16.66 CV Miguel Rodriguez Marco
2009 Jan. 6.942 16.15 CV Miguel Rodriguez Marco
2009 Jan. 4.946 16.10 CV Miguel Rodriguez Marco
2009 Jan. 4.903 16.12 CV Diego Rodriguez
2009 Jan. 4.899 15.57 CR Diego Rodriguez
2008 Dec. 21.968 15.52 CV Miguel Rodriguez Marco
2008 Dec. 20.988 15.53 CV Miguel Rodriguez Marco
2008 Dec. 19.979 15.35 CV Miguel Rodriguez Marco
2008 Dec. 19.962 15.39 CV Esteban Reina Lorenz
2008 Dec. 19.855 15.21 CV Adolfo San Segundo
2008 Dec. 19.855 14.84 CR Adolfo San Segundo
2008 Dec. 19.809 14.92 R Cesar Piret
2008 Dec. 18.985 15.22 CV Miguel Rodriguez Marco
2008 Dec. 18.954 15.30 V Diego Rodriguez
2008 Dec. 18.947 14.45 I Diego Rodriguez
2008 Dec. 18.945 14.90 R Diego Rodriguez
2008 Dec. 18.777 14.47 I Albert Sanchez Caso
2008 Dec. 18.774 14.72 R Albert Sanchez Caso
2008 Dec. 18.771 15.16 V Albert Sanchez Caso
2008 Dec. 16.981 15.27 CV Miguel Rodriguez Marco
2008 Dec. 15.760 15.1 visual Klaus Wenzel
2008 Dec. 15.986 15.23 CV Miguel Rodriguez Marco
2008 Dec. 15.48625 15.0 CCD Youichirou Nakashima
2008 Dec. 15.48422 15.1 CCD Youichirou Nakashima
2008 Dec. 15.48220 15.2 CCD Youichirou Nakashima
2008 Dec. 15.48017 15.2 CCD Youichirou Nakashima
2008 Dec. 12.831 14.70 V Diego Rodriguez
2008 Dec. 12.828 14.50 R Diego Rodriguez
2008 Nov. 24.142166 12.769 H I.N.A.O.E.
2008 Nov. 24.053 15.93 CV Miguel Rodriguez Marco
2008 Nov. 23.087 15.82 CV Miguel Rodriguez Marco
2008 Nov. 21.056 15.70 CV Miguel Rodriguez Marco
2008 Nov. 20.316569 12.440 H I.N.A.O.E.
2008 Nov. 20.078 15.52 CV Miguel Rodriguez Marco
2008 Nov. 18.261732 12.356 H I.N.A.O.E.
2008 Nov. 18.083 15.59 CV Miguel Rodriguez Marco
2008 Nov. 13.63532 [15.5 CCD Youichirou Nakashima
2008 Nov. 13.63329 [15.5 CCD Youichirou Nakashima
2008 Nov. 13.63125 [15.5 CCD Youichirou Nakashima
2008 Feb. 25.909 15.68 CV Miguel Rodriguez Marco
2008 Feb. 25.40628 15.85 Rc Kazuhiro Nakajima
2008 Feb. 25.40398 16.25 V Kazuhiro Nakajima
2008 Feb. 25.40244 16.22 C Kazuhiro Nakajima
2008 Feb. 22.881 15.61 CV J. Ruiz , J. Curto, J. Temprano
2008 Feb. 21.000 15.85 V Miguel Rodriguez Marco
2008 Feb. 17.50133 15.86 C Ken-ichi Kadota
2008 Feb. 16.784 15.9 CV Esteban Reina Lorenz
2008 Feb. 16.51942 15.92 C Ken-ichi Kadota
2008 Feb. 11.877 16.13 V Miguel Rodriguez Marco
2008 Feb. 11.146 16.2 visual Bob King
2008 Feb. 10.862 16.30 V Miguel Rodriguez Marco
2008 Feb. 10.8174 15.9: visual Chris Jones
2008 Feb. 10.7840 15.6: visual Chris Jones
2008 Feb. 9.8201 15.7: visual Chris Jones
2008 Feb. 9.785 15.32 CR Diego Rodriguez
2008 Feb. 9.7785 15.9: visual Chris Jones
2008 Feb. 9.119 14.9 I Masayuki Suzuki
2008 Feb. 9.118 16.2 V Masayuki Suzuki
2008 Feb. 9.116 16.8 B Masayuki Suzuki
2008 Jan. 26.52542 15.5: CCD Koichi Itagaki
2007 Dec. 3.52154 15.0 CCD Youichirou Nakashima
2007 Dec. 3.51950 14.8 CCD Youichirou Nakashima
2007 Dec. 3.51745 14.9 CCD Youichirou Nakashima
2007 Nov. 11.63256 14.2 CCD Youichirou Nakashima
2007 Nov. 11.63049 14.2 CCD Youichirou Nakashima
2007 Nov. 11.62843 14.0 CCD Youichirou Nakashima
2007 Oct. 6.75456 15.3 CCD Nobuo Ohkura and Youichirou Nakashima
2007 Sept.12.81499 15.4 CCD Youichirou Nakashima
2002 Sept.24.48889 15.0 R Reinder J. Bouma (Skymorph archive)
2002 Sept.24.47848 15.0 R Reinder J. Bouma (Skymorph archive)
2002 late 15.0 r' CMC14 catalogue
2002 July middle 14.3 red UCAC2 catalogue
2002 Jan. 2.40493 16.6 CCD Nobuo Ohkura
2002 Jan. 2.40296 16.5 CCD Nobuo Ohkura
2001 Dec. 11.46672 15.7 CCD Nobuo Ohkura
2001 Dec. 11.46476 15.4 CCD Nobuo Ohkura
2001 Dec. 11.46279 15.5 CCD Nobuo Ohkura
2000 Dec. 1.47036 16.3 CCD Nobuo Ohkura
2000 Dec. 1.46851 16.2 CCD Nobuo Ohkura
2000 Dec. 1.46664 16.1 CCD Nobuo Ohkura
1999 15.830 J 2MASS All-Sky Point Source Catalog
1999 14.828 H 2MASS All-Sky Point Source Catalog
1999 13.967 Ks 2MASS All-Sky Point Source Catalog
1995 Oct. 26 15.8 approx.V Digitized Sky Survey (infrared plate)
1993 Sept.21 17.0 approx.V Digitized Sky Survey (infrared plate)
1993 Aug. 15 15.8 approx.V Digitized Sky Survey (blue plate)
1992 Dec. 24 17.2 approx.V Digitized Sky Survey (blue plate)
1992 Oct. 21 18.7 approx.V Digitized Sky Survey (blue plate)
1991 Oct. 3 19.0 approx.V Digitized Sky Survey (red plate)
1990 Oct. 28 18.7 approx.V Digitized Sky Survey (infrared plate)
1989 Sept.28 17.8 approx.V Digitized Sky Survey (red plate)
1953 Oct. 12 18.7 approx.V Digitized Sky Survey (red and blue plates)
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