[Tex/LaTex] Why the .bib file is not recognized by Overleaf compiler in ApJ template

aastexbibliographiescitingmultiple-citations

I am writing a paper on overleaf supposedly in ApJ (Astrophysical Journal) format. I have my .bib file independently made utilizing JabRef on ADS website and uploaded to the project in Overleaf. But it seems that in-text citations do not appear in the final version after compiling. In particular, here is my short version of the code:

\documentclass[twocolumn,trackchanges]{aastex61}

\usepackage{natbib}

\usepackage{graphicx}
\usepackage{latexsym}
\usepackage{amssymb}
\usepackage{longtable}
\usepackage{epsf}

\begin{document}
.
.
.
\section{Methodology and Analyses}  \label{Section 2}
....This includes absorbers selected for the presence of \ion{C}{4}
$\lambda \lambda1548.1,1550.7$, \ion{Mg}{2} $\lambda\lambda2796.3,2803.5$
resonance-line doublets and Lyman limit absorption, which do not also 
qualify as DLA systems. For a complete review on the subject refer to 
\citet{2005ARA&A..43..861W}. 

\bibliographystyle{ApJ}
\bibliography{my_References}
.
.
.
\end{document}

Here is the Error Message:

(no line number): This is BibTeX, Version 0.99d (TeX Live 2016/Debian)
Capacity: max_strings=100000, hash_size=100000, hash_prime=85009 The
top-level auxiliary file: sim_DLA_Paper.aux I couldn't open style file
ApJ.bst
—line 126 of file sim_DLA_Paper.aux : \bibstyle{ApJ : } I'm skipping whatever remains of this command I found no style
file—while reading file sim_DLA_Paper.aux You've used 46 entries,
0 wiz_defined-function locations,
178 strings with 2287 characters, and the built_in function-call counts, 0 in all, are:
= — 0

— 0 < — 0
+ — 0
– — 0
* — 0 := — 0 add.period$ — 0 call.type$ — 0 change.case$ — 0 chr.to.int$ — 0 cite$ — 0 duplicate$ — 0 empty$ — 0 format.name$
— 0 if$ — 0 int.to.chr$ — 0 int.to.str$ — 0 missing$ — 0 newline$ — 0 num.names$ — 0 pop$ — 0 preamble$ — 0 purify$ — 0 quote$ — 0 skip$ — 0 stack$ — 0 substring$ — 0 swap$ — 0 text.length$ — 0
text.prefix$ — 0 top$ — 0 type$ — 0 warning$ — 0 while$ — 0
width$ — 0 write$ — 0 (There were 2 error messages)
./sim_DLA_Paper.tex:75: Package natbib Warning: Citation
2005ARA&A..43..861W' on page 2 undefined on i nput line 75.
./sim_DLA_Paper.tex:80: Package natbib Warning: Citation
2003MNRAS.342..962S' on page 2 undefined on i nput line 80.

Package natbib Warning: Citation `2003JApA…24…51G' on page 2
undefined on i nput line 80.

Package natbib Warning: Citation `2005MNRAS.356..778S' on page 2
undefined on i nput line 80.

Package natbib Warning: Citation 1974A&A....32..391P' on page 2
undefined on i nput line 80. ./sim_DLA_Paper.tex:81: Package natbib
Warning: Citation2005CSci…88.1088B' on page 2 undefined on i nput
line 81. ./sim_DLA_Paper.tex:83: Package natbib Warning: Citation
`2011MNRAS.416.1215R' on page 2 undefined on i nput line 83.

Package natbib Warning: Citation `2016A&A…596A..97D' on page 2
undefined on i nput line 83.

Package natbib Warning: Citation 2016MNRAS.460.2675R' on page 2
undefined on i nput line 83. ./sim_DLA_Paper.tex:85: Package natbib
Warning: Citation2014MNRAS.445..581H' on page 3 undefined on i nput
line 85.

Here is the the first two entries of .bib file:

% Encoding: UTF-8

@Article{2005ARA&A..43..861W,
  author  = {{Wolfe}, A.~M. and {Gawiser}, E. and {Prochaska}, J.~X.},
  title   = {{Damped Ly {$\alpha$} Systems}},
  journal = {\araa},
  year    = {2005},
  volume  = {43},
  pages   = {861-918},
  month   = sep,
  adsnote = {Provided by the SAO/NASA Astrophysics Data System},
  adsurl  = {http://adsabs.harvard.edu/abs/2005ARA%26A..43..861W},
  doi     = {10.1146/annurev.astro.42.053102.133950},
  eprint  = {astro-ph/0509481},
  file    = {:2005ARA&A..43..861W - Damped Ly $_alpha$ Systems.pdf:PDF},
}

@Article{2005MNRAS.364.1467Z,
  author   = {{Zwaan}, M.~A. and {van der Hulst}, J.~M. and {Briggs}, F.~H. and {Verheijen}, M.~A.~W. and {Ryan-Weber}, E.~V.},
  title    = {{Reconciling the local galaxy population with damped Lyman {$\alpha$} cross-sections and metal abundances}},
  journal  = {\mnras},
  year     = {2005},
  volume   = {364},
  pages    = {1467-1487},
  month    = dec,
  adsnote  = {Provided by the SAO/NASA Astrophysics Data System},
  adsurl   = {http://adsabs.harvard.edu/abs/2005MNRAS.364.1467Z},
  doi      = {10.1111/j.1365-2966.2005.09698.x},
  eprint   = {astro-ph/0510127},
  file     = {:2005MNRAS.364.1467Z - Reconciling the local galaxy population with damped Lyman $_alpha$ cross-sections and metal abundances.pdf:PDF},
  keywords = {surveys, galaxies: ISM, quasars: absorption lines, galaxies: statistics, radio lines: galaxies},
}

I can see that .bib file is contained citations in the form of MNRAS. I think they should instead be all ApJ. But, it is really a long file and I don't know if I need to manipulate all sources one by one. When I change the option ApJ to mnras in the following command \bibliographystyle{}, in-text citations appear but why is that? Why style ApJ is not recognized?

Best Answer

The error message

\bibstyle{ApJ : } I'm skipping whatever remains of this command

tells you that the bibliography style is unknown to overleaf. You need to add a file apj.bst to your project, that means add it into the same directory you have your TeX file.

You can for example find a link to apj.bst on the website of aastex in section 2.13.2 Specifying Bibliographic and Citation Information.

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