Canes Venatici - Constellation

 An interest constellation in northern sky. It has distinct 2 stars. The several other stars has more than 4.5 magnitude.

Image credit-By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) - [1], CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15406242

The interesting objects in this constellation are

Alpha Star(Cor Caroli) is binary Start system with with visible magnitude of 2.8 and 5.6.  Could be seen through Binoculars or telescope.

M3 is Globular Cluster(6.2 magnitude) It contains 274 known variable Stars.

Image Credits-By ESA/Hubble, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=77858805

M51 is Whirlpool Galaxy (interacting grand-design spiral galaxy) with a Seyfert 2( active galactic nucleus).It has 8.4 magnitude. Below is Whirlpool Galaxy invarious lights – Observed in Various Light a) 0.4; 0.7 μm – b) vis-blue/green; ir-red – c) 3.6; 4.5; 8 μm – d) 24 μm

Image Credit-By NASA/JPL-Caltech - https://photojournal.jpl.nasa.gov/figures/PIA23128_fig1.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=79998319


Below is translation of above text in Portuguese by Elaine (Teacher from Brazil,In São Paulo)

Constelação de Canes Venatici

Uma interessante constelação no Norte do céu. Possui duas estrelas distintas, e várias outras estrelas com magnitude superior a 4,5.
Os objetos interessantes nesta constelação são;
Estrela Alfa (Cor Caroli) é um sistema binário estrelar, com visível magnitude de 2.8 e 5.6. Pode ser visto por binóculos ou telescópio.

M3 é um aglomerado globular ( magnitude 6.2). Contém 274 estrelas variáveis conhecidas.

M51 é a Galáxia  do Redemoinho de grande desenho interagindo com um  Seyfert 2 ( núcleo galáctico ativo). Tem magnitude de 8.4.
Abaixo estão as luzes invariáveis da Galáxia Rede Moinho.
Observadas em várias luzes.
a)0,4;0,7 um.
b) azul, verde ou vermelho.
c)3,6,4,5;8 um- de.
d) 24 um.

Crédito de imagem da NASA




Refer links-

https://en.wikipedia.org/wiki/Canes_Venatici

https://en.wikipedia.org/wiki/Cor_Caroli

https://en.wikipedia.org/wiki/Messier_3

https://en.wikipedia.org/wiki/Whirlpool_Galaxy

https://www.nasa.gov/feature/goddard/2017/messier-51-the-whirlpool-galaxy/

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