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Re: (ATMoB:Discuss) (ATMOB Discuss)Something new in M78?
Jay McNeil's discovery image of the new nebulosity is at :
http://wkaa dawt net/gallery/mcneil/mcneilnebulalum90labeled
From what I've heard so far, earlier images of the M78 area taken back to 2001 show a hint of the new nebula, but it's not apparent on images from 2000 and earlier. And apparently it's really undergone it's major increase in brightness only since November of 2003. So if any of you have images of M78 taken in the last year or so, they may help to demonstrate the evolution of this nebula.
John Boudreau
http://home dot comcast dawt net/~jeboud/astro.htm
----- Original Message -----
From: "david" <davidwallace2000*at*comcast dawt net>
To: <atmob-discuss*at*atmob daht org>
Sent: Tuesday, February 10, 2004 8:14 PM
Subject: (ATMoB:Discuss) (ATMOB Discuss)Something new in M78?
> I just came across a posting in alt.binaries.pictures.astro that said a
> new nebula was discovered in the M78 area. Apparently it's visible to
> (and was discovered by) an amateur. Just thought I'd pass it along.
> Text was:
>
>
> > "Harri Haukka" <harri*at*taurushill dawt net> wrote in message
> > news:Bs_Vb.499$qI1.92362*at*news.uswest dawt net...
> > Hey.
> >
> > I received yesterday some emails that said that there is a
> > new "nebula" (or something) forming in M78 region. Have any
> > of you received similar mail or have anyone noticed this
> > new phenomenon? If you have an old and recent photos from
> > M78, I recommend that you compare old and new pictures to
> > see if there is really something going on.
> > .
>
>
> > From: "Bill Ferris" <billferris*at*a...>
> > Newsgroups: sci.astro.amateur
> > Sent: Monday, February 09, 2004 11:01 PM
> > Subject: Amateur Discovers New Nebula
>
>
> > Congratulations to Jay McNeil on his discovery of a new nebula near
> M78. The
> > following is from Brian Skiff of Lowell Observatory:
> > ===========
> > Jay McNeil (Paducah KY) recently noticed that a new nebula has appeared
> > in the region of M78 in Orion. This was observed with a small CCD camera
> > set-up. Passing this information along to Herbig-Haro expert Bo
> Reipurth (Univ
> > Hawaii), it has been found that the nebula has resulted from the
> outburst of an
> > embedded star behind the thick dark clouds in the region. The event
> is possibly
> > similar to eruptions of EX Lupi (prototype of the EXor variables).
> Material
> > has been submitted for an IAUC announcement, but there is no reason
> follow-up
> > observations should be delayed now that the Moon is getting out of
> the way in
> > the evening.
> >
> > McNeil's Nebula (as it is being called for now) is about an arcminute
> > across, and is essentially a new deep-sky object---and is probably a
> visual
> > object. It is centered at roughly: 5 46 14 -00 05.8 (J2000). Those
> with CCD
> > cameras will immediately see what's going by comparing new images
> with your
> > favorite archive DSS images.
> >
> > The erupting variable, which is too faint (at present) to appear in
> > McNeil's images, is located at the tapered southern tip of the new
> nebula, and
> > has been observed previously only from the near-IR and longward:
> >
> > IRAS 05436-0007 = 2MASS J05461313-0006048: 5 46 13.14 -00 06 04.8 (J2000)
> >
> > As no one just now knows when the nebula started to shine it's a good
> > idea to look on your old images of M78 and compare them with the
> latest images
> > you
> > take of the nebula.
> > ===========
> >
> > Regards,
> >
> > Bill Ferris
> > "Cosmic Voyage: The Online Resource for Amateur Astronomers"
> > URL: http://www.cosmic-voyage dawt net
> > =============
> > Email: Remove "ic" from dot comic above to respond
> >
>
> and:
>
> > Follow these links links:
> > IAUC: http://cfa-www.harvard.edu/iauc/08200/08284.html
> > HH12:
> > http://www.submm.caltech.edu/~dcl/Refereed/1999ApJ...527..856.pdf
>
> > Jorma Koski
>
> --
> ==========================================================
> To err is human. To *really* err requires a C++ compiler.
> ==========================================================
>
>
>
>
References: