#!/usr/bin/perl

# https://perlmonks.org/?node_id=1226300

use strict;
use warnings;

my @lines = <<END =~ /.*\n/g;
other stuff
AUID \cIRA \cIDec \cILabel \cIV \cIB-V \cIComments 
more stuff
END

my @headings = (grep /^\s*AUID/, @lines)[0] =~ /\t(\S+)/g;

use Data::Dump 'dd'; dd \@headings;