Our nearest neighbours - CN LEO (Wolf 359)

Our nearest neighbours - CN LEO (Wolf 359)


CN LEO is the 3rd closest system to Sol. The system consists of a red
dwarf of spectral class M6.0 with an estimated mass of only 9% that of
the Sun. Note how much brighter the M6.0 dwarf is in the IR rather
than V band and how well this is shown in this 120 second animated
exposure of IR and V band images.


http://www.martin-nicholson.info/close/cnleo.htm

Martin Nicholson, Daventry, England.
http://www.martin-nicholson.info/1/1a.htm
Visit the Astronomical Hall of Shame at http://www.geocities.com/queen5658/

On Nov 13, 5:57 am, ukastronomy
wrote:
Our nearest neighbours - CN LEO (Wolf 359)

CN LEO is the 3rd closest system to Sol. The system consists of a red
dwarf of spectral class M6.0 with an estimated mass of only 9% that of
the Sun. Note how much brighter the M6.0 dwarf is in the IR rather
than V band and how well this is shown in this 120 second animated
exposure of IR and V band images.

http://www.martin-nicholson.info/close/cnleo.htm

Martin Nicholson, Daventry, England.http://www.martin-nicholson.info/1/1a.htm
Visit the Astronomical Hall of Shame athttp://www.geocities.com/queen5658/

Why would it be that much brighter?
Jon, fan of http://www.walterledda.com

A cool stsr of this type radiates far more of its energy in the IR
than is the visible band. Hence it appears brighter in the CCD images
that records IR light only.


On 13 Nov, 14:57, wrote:
On Nov 13, 5:57 am, ukastronomy
wrote:

Our nearest neighbours - CN LEO (Wolf 359)

CN LEO is the 3rd closest system to Sol. The system consists of a red
dwarf of spectral class M6.0 with an estimated mass of only 9% that of
the Sun. Note how much brighter the M6.0 dwarf is in the IR rather
than V band and how well this is shown in this 120 second animated
exposure of IR and V band images.

http://www.martin-nicholson.info/close/cnleo.htm

Martin Nicholson, Daventry, England.http://www.martin-nicholson.info/1/1a.htm
Visit the Astronomical Hall of Shame athttp://www.geocities.com/queen5658/

Why would it be that much brighter?
Jon, fan ofhttp://www.walterledda.com

On Tue, 13 Nov 2007 14:57:33 -0000, wrote:

Why would it be that much brighter?

Stars behave pretty much like classical blackbody emitters. At lower
temperatures, the peak output is in the IR; it takes high temperatures
to produce a peak in the visible band.

It isn't that the cool star is bright in IR in absolute terms, but
rather that it is bright in IR compared to its brightness at shorter
wavelengths.

_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

wrote:

On Nov 13, 5:57 am, ukastronomy
wrote:
Our nearest neighbours - CN LEO (Wolf 359)

CN LEO is the 3rd closest system to Sol. The system consists of a red
dwarf of spectral class M6.0 with an estimated mass of only 9% that of
the Sun. Note how much brighter the M6.0 dwarf is in the IR rather
than V band and how well this is shown in this 120 second animated
exposure of IR and V band images.

http://www.martin-nicholson.info/close/cnleo.htm

Martin Nicholson, Daventry, England.http://www.martin-nicholson.info/1/1a.htm
Visit the Astronomical Hall of Shame athttp://www.geocities.com/queen5658/

Why would it be that much brighter?
Jon, fan of http://www.walterledda.com

IR means Infra red
V means visual.
UV means Ultra violet
Brighten than means .... "in some wavelength ranger".

"Life or University Surplus" wrote in message
...
:
:
: wrote:
:
: On Nov 13, 5:57 am, ukastronomy
: wrote:
: Our nearest neighbours - CN LEO (Wolf 359)
:
: CN LEO is the 3rd closest system to Sol. The system consists of a red
: dwarf of spectral class M6.0 with an estimated mass of only 9% that of
: the Sun. Note how much brighter the M6.0 dwarf is in the IR rather
: than V band and how well this is shown in this 120 second animated
: exposure of IR and V band images.
:
: http://www.martin-nicholson.info/close/cnleo.htm
:
: Martin Nicholson, Daventry,
England.http://www.martin-nicholson.info/1/1a.htm
: Visit the Astronomical Hall of Shame
athttp://www.geocities.com/queen5658/
:
: Why would it be that much brighter?
: Jon, fan of http://www.walterledda.com
:
: IR means Infra red
: V means visual.
: UV means Ultra violet
: Brighten than means .... "in some wavelength ranger".
:
"Double star" means approximately on the same line of sight,
no matter how far away from each other. Whoopee.

ukastronomy wrote:
Our nearest neighbours - CN LEO (Wolf 359)

Is that one of your 70 thousand discoveries? LOL