A needle in a Haystack:

Finding Exotic Binaries in

Star Clusters

Manuel Pichardo Marcano

Star Clusters

Globular Cluster

Open Cluster

100 000 to 1 000 000 stars
Old stars (age of our Galaxy)

100 to 1 000 stars
Young Stars

Pleiades. Distance: 400 light years

3 A.M/ 03:00

August 1, 2024

A Open Cluster

From: https://stellarium-web.org/

A Globular Cluster

From: https://stellarium-web.org/

M4: Closest Globular Cluster:

7 thousand light-years

9 P.M/ 21:00

July 21, 2024

Globular Clusters

Globular Cluster

NGC 6397

Omega Cen

Imágenes: NASA/ ESA/ STScI

M4

47 tuc

NGC 6752

M22

M92

Normal Stars and Dead Stars

White Dwarfs

"Normal" Stars

White Dwarf

Sirius

White Dwarf

Sirius: The brightest star in the night sky

1 A.M/ 01:00

October 22, 2024

Sirius A y Sirius B

NASA, ESA, H. Bond (STScI), and M. Barstow (University of Leicester).

Sirius A

"Normal"

Star

Sirius B

White Dwarf

A 8.6 light years
Closest White Dwarf

Sirius A y Sirius B

A 8.6 light years
Closest White Dwarf
Orbital Period of 50 years

White Dwarf

White Dwarfs

Mass of the Sun

Radius of the Earth

Types of Stars

Sun

20 to 100 times the Mass of the Sun

All low mass stars: M to A will become a White Dwarf

Types of Stars

Life Cicle of Stars

White Dwarfs

Compact Objects

Neutron Star

White Dwarf

Mass of the Sun

Size of a City!

Mass of the Sun

Size of the Earth

Binaries Everywhere!

Credit: Aaron Geller

Compact Binaries

R. Hynes

Compact Object and "Normal" star

Factories of X-ray Binaries

Credits: NASA/Rivera Sandoval

Text

Neutron Star

Neutron Star

White Dwarf

White Dwarf

Space Telescopes

Hubble Space Telescope

Chandra

Finding Compact Binaries in GCs

Hubble in the Optical

Chandra in the X-ray

Look in the X-ray

Finding Black Holes

Finding Black Holes

Finding Black Holes

The Finger Print of the Stars

Finding Black Holes

Finding Black Holes

Globular Cluster

NGC 6397

Omega Cen

Imágenes: NASA/ ESA/ STScI

M70

47 tuc

NGC 6752

M22

M92

Exotic Binaries Factories

Globular Cluster

NGC 6397

Omega Cen

Imágenes: NASA/ ESA/ STScI

M70

47 tuc

NGC 6752

M22

M92

Exotic Binaries Factories

Compact Binaries

R. Hynes

X-ray

Compact Object

Finding Compact Binaries in GCs

H-R Diagram

Cohn et. al (2011)

Hα Excess

White Dwarf + "Normal" Star

Hα deficiency

Brighter

Bluer <---> Redder

Mark A. Garlick

White Dwarf Sequence

Main Sequence

White Dwarf

Solar-like Star

X-ray (Chandra)

Hubble Data

Globular Cluster

NGC 6397

Omega Cen

Imágenes: NASA/ ESA/ STScI

M70

47 tuc

NGC 6752

M22

M92

Exotic Binaries Factories

¡Gracias!

Thank you!

!

Black Hole Candidate

47 Tuc

Optical (Hubble)

Radio ATCA

Redback Pulsar

Hubble Space Telescope

Space Telescopes

Hubble Space Telescope

Life Cycles of Stars

Life Cycles of Stars

Title Text

Subtitle

Neutron Star Binaries

Credit: Roen Kelly/Discover

Main et al 2018 (Nature)

Redback 'spider' Pulsar

A new candidate Redback Pulsar

HUGS catalogue. (Piotto et al. 2015, Nardiello et al. 2018)

Pichardo Marcano et. al (2021a)

X-ray

HST F336W

Radio

Zhao et al.(2020)

X-ray Binaries

Credits: NASA/Rivera Sandoval

Text

Neutron Star

Neutron Star

White Dwarf

White Dwarf

Extra

Globular Cluster

Globular Cluster

A new candidate Redback Pulsar

Variable

Periodic

Lomb-Scargle periodogram

Pichardo Marcano et. al (2021a)