Phosphorus-bearing molecules in the Galactic Center

abstract

Phosphorus-bearing molecules in the Galactic Center

Phosphorus (P) is one of the essential elements for life due to its central role in biochemical processes. Recent searches have shown that P-bearing molecules (in particular PN and PO) are present in star-forming regions, although their formation routes remain poorly understood. In this Letter, we report observations of PN and PO towards seven molecular clouds located in the Galactic Center, which are characterized by different types of chemistry. PN is detected in five out of seven sources, whose chemistry is thought to be shock-dominated. The two sources with PN non-detections correspond to clouds exposed to intense UV/X-rays/cosmic-ray radiation. PO is detected only towards the cloud G+0.693−0.03, with a PO/PN abundance ratio of ∼1.5. We conclude that P-bearing molecules likely form in shocked gas as a result of dust grain sputtering, while are destroyed by intense UV/X-ray/cosmic ray radiation.

Ver publicación

Calendario de Eventos

May 2018
S M T W T F S
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31

Fases de la Luna

VIDEO STREAMING

oaq download

CANAL MULTIMEDIA

VER MÁS

Acceso, Ubicación y Parqueaderos

Acceso, Ubicación y Parqueaderos

 

OBSERVATORIO ASTRONÓMICO DE QUITO

Facebook Twitter Twitter


Av. Gran Colombia S/N y Av. Diez de Agosto
Interior del parque La Alameda
Quito-Ecuador
(02) 257 0765 - 258 3451 ext 100
observatorio.astronomico@epn.edu.ec